Sep 3, 2022 — Assembly and operating instructions. SK 3178800. SK 3178801. SK 3179800 ... Safety instructions for installation . ... A35. Alarm: Active cool- ing function.
3 nov 2022 — Safety instructions. 2.1 General safety instructions. Please observe the following general safety instructions ... Setting range set value [°C/°F]. Internal temp.
Enclosure cooling unit
SK 3178800 SK 3178801 SK 3179800 SK 3179801 SK 3180800 SK 3184800 SK 3184840
Assembly and operating instructions
DE
Preface
Preface EN Dear Customer!
Thank you for choosing a "Blue e+" enclosure cooling unit (referred to hereafter as "cooling unit") from Rittal. Yours Rittal GmbH & Co. KG
Rittal GmbH & Co. KG Auf dem Stützelberg
35745 Herborn Germany
Phone: +49(0)2772 505-0 Fax: +49(0)2772 505-2319
E-mail: info@rittal.de www.rittal.com www.rittal.de
We are always happy to answer any technical questions regarding our entire range of products.
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Rittal enclosure cooling unit
Contents
1 Notes on documentation .................. 4
1.1 CE labelling................................................... 4 1.2 Storing the documents.................................. 4 1.3 Symbols used in these operating
instructions ................................................... 4 1.4 Other applicable documents ......................... 4
2 Safety instructions ............................ 5
2.1 General safety instructions ............................ 5 2.2 Safety instructions for transportation ............. 5 2.3 Safety instructions for assembly.................... 5 2.4 Safety instructions for installation .................. 5 2.5 Safety instructions for operation.................... 5 2.6 Safety instructions for maintenance............... 5 2.7 Operating and technical staff......................... 5 2.8 Other dangers when using the cooling unit ... 5 2.9 IT safety instructions ..................................... 5
2.9.1 Measures for products and systems ..................... 6
3
3.1 3.1.1 3.1.2 3.1.3 3.1.4 3.1.5 3.1.6 3.1.7 3.2 3.3
Product description .......................... 7
Functional description and components........ 7 Function ............................................................... 7 Components ........................................................ 8 Control ................................................................. 8 Safety devices ...................................................... 8 Condensation ....................................................... 8 Filter mats ............................................................ 9 Door limit switch ................................................... 9 Intended use, foreseeable misuse ................. 9 Supply includes........................................... 10
4 Transport and handling .................. 11
4.1 Delivery ....................................................... 11 4.2 Unpacking .................................................. 11 4.3 Transport .................................................... 11
5
5.1 5.2 5.3 5.3.1 5.3.2 5.3.3 5.3.4 5.3.5 5.3.6 5.4 5.4.1 5.4.2 5.4.3 5.4.4
Installation ...................................... 13
Safety instructions....................................... 13 Siting location requirements ........................ 13 Assembly procedure ................................... 13 Assembly instructions ......................................... 13 Mounting options ............................................... 14 Make a mounting cut-out in the enclosure .......... 14 External mounting of the cooling unit .................. 15 Internal mounting of the cooling unit ................... 16 Connect the condensate water discharge .......... 20 Electrical connection ................................... 21 Notes on electrical installation ............................. 21 Install the power supply ...................................... 23 Connect the alarm relay ...................................... 24 Interfaces ........................................................... 24
6 Commissioning .............................. 25
7 Operation ....................................... 26
7.1 Control via the display................................. 26 7.2 General information about programming ..... 26 7.3 Updater program ........................................ 26
Contents
7.4 Setting options via the display .................... 27
7.4.1 Selecting a control mode .................................... 27
EN
7.4.2 Setting the target temperature ............................ 27
7.4.3 Setting the unit ................................................... 28
7.4.4 Launching test mode .......................................... 28
7.4.5 Manually acknowledge a system message ......... 28
7.4.6 Programming overview ....................................... 29
7.4.7 Parallel device control ......................................... 29
7.4.8 Evaluate system messages ................................ 29
7.5 Rittal Scan & Service app ........................... 29
7.5.1 General .............................................................. 29
7.5.2 Configuration ...................................................... 30
7.5.3 Technical Guide ................................................. 31
7.5.4 Product informationen ........................................ 31
7.5.5 Services and spare parts .................................... 31
7.5.6 Fast Copy .......................................................... 31
7.6 List of system messages ............................ 32
8 Inspection and maintenance ........... 35
8.1 Safety instructions for maintenance work ... 35 8.2 Notes on the refrigerant circuit ................... 35 8.3 Maintenance work on the cooling unit ........ 35 8.4 Compressed air cleaning............................ 35 8.4.1 Removing an internally mounted unit .................. 35 8.4.2 Removing an externally mounted unit ................. 36 8.4.3 Removing the cover ........................................... 36 8.4.4 Cleaning the components with compressed air .. 37 8.4.5 Re-assembling the cooling unit ........................... 38
9 Storage and disposal ...................... 39
10 Technical specifications .................. 40
11 List of spare parts ........................... 45
12 Drawings ........................................ 47
12.1 Representation of mounting cut-outs ......... 47 12.2 External and internal mounting dimensions
(SK 317880x width 300 mm) ................... 48 12.3 External and internal mounting dimensions
(SK 317980x width 300 mm) ................... 49 12.4 External and internal mounting dimensions
(SK 3180800 width 300 mm) ................... 50 12.5 External and internal mounting dimensions
(SK 31848x0 width 400 mm) ................... 51
13 Accessories .................................... 52
14 Customer service addresses .......... 53
15 Compact service information .......... 57
Rittal enclosure cooling unit
3
1 Notes on documentation
1 Notes on documentation EN
1.1 CE labelling
Rittal GmbH & Co. KG confirms the conformity of the cooling unit with the European Union's Machinery Directive 2006/42/EC and EMC Directive 2014/30/EU. A simplified declaration of conformity can be found in the assembly and installation instructions enclosed with the device (see also the Rittal website). These are the original operating instructions.
1.2 Storing the documents
The assembly and operating instructions as well as all other applicable documents are an integral part of the product. They must be issued to everyone who works with the unit and must always be available and on hand for operating and maintenance personnel.
1.3 Symbols used in these operating instructions
The following symbols are used in this documentation:
Warning! A dangerous situation which may cause death or serious injury if the instructions are not followed.
Caution! A dangerous situation which may lead to (minor) injuries if the instructions are not followed.
Note: Important notices and indication of situations which may result in material damage.
This symbol indicates an "action point" and shows that you should perform an operation or procedure.
1.4 Other applicable documents
Paper copies of the assembly and operating instructions are available for the unit types described here and are enclosed with the equipment. We cannot accept any liability for damage associated with failure to observe these instructions. Please also observe the instructions for any accesso-
ries used.
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Rittal enclosure cooling unit
2 Safety instructions
2 Safety instructions
2.1 General safety instructions
Please observe the following general safety instructions for the installation and operation of the system: Always wear the required personal safety equipment
when working on this device.
The cooling unit must be connected to the mains via
an all-pole disconnect to overvoltage category III (IEC EN
61058-1).
Pin 4 on the signal connector should not be used. Otherwise, the admissible clearance/creepage distance between the alarm relay and door contact connections will not be met.
Before removing the hood, allow the unit to cool for at least 10 minutes to eliminate the risk of burns from hot surfaces.
Please do not make any changes to the cooling unit that are not described in these operating instructions or other applicable assembly and operating instructions.
The products should only be combined and operated with the prescribed Rittal system accessories.
Other than these general safety instructions, it is also vital to observe the specific safety instructions when
2.5 Safety instructions for operation
The operational safety of the cooling unit is only warranted if used as intended. The technical specifications and limit values stated must not be exceeded under any circumstances. In particular, this applies to the specified ambient temperature range and IP protection category.
Operating the cooling unit in direct contact with water, aggressive materials or inflammable gases and vapours is prohibited.
carrying out the tasks described in the following chap- 2.6 Safety instructions for maintenance
ters.
The device must only be cleaned by trained special-
2.2 Safety instructions for transportation
Please observe the maximum permissible weight to be
ists. De-energise the device prior to cleaning. Never use flammable liquids for cleaning.
lifted by one person. Use suitable lifting devices, if needed. Cooling units must be transported in an upright position and secured to prevent them from tipping over. Shipping braces (such as a structure made from square timbers or boards) must be used when transporting cooling units already mounted on the enclosure. These braces support the cooling unit and prevent it from slipping in case of impact. Use a sufficiently large pallet to prevent it tipping over.
2.7 Operating and technical staff
The assembly, installation, commissioning, maintenance and repair of this cooling unit may only be performed by qualified, trained personnel.
Only properly instructed personnel may operate a cooling unit with the system operational.
Children and persons with limited cognitive/coordinative abilities must not operate, maintain or clean the unit or be allowed to use it as a toy.
If the cooling unit has been mounted on a door, close the door and keep it closed during transportation.
2.8 Other dangers when using the cooling unit
2.3 Safety instructions for assembly
During assembly, the cooling unit is at risk of dropping through the mounting cut-out.
Do not assemble and re-activate the device until it is completely dry.
When installing the cooling unit (see section 5 "Installation"), there is a risk that the enclosure could become unbalanced and tip over. In such cases, the enclosure should be bolted to the
floor as a precaution.
If the air inlet or outlet of the cooling unit is obstructed,
2.4 Safety instructions for installation
Please be sure to observe the applicable regulations governing electrical installations of the country in which the device is installed and operated as well as national regulations for accident prevention. Please also observe any internal company regulations, such as work, operating and safety regulations.
The connection regulations of the appropriate power supply company are to be followed. Otherwise, there is risk of injury from electric shock if the connection to
there is a risk of air short-circuits, resulting in inadequate climate control. Please ensure that the electronic assemblies in the en-
closure are installed in accordance with section 5.3.1 "Assembly instructions". Where applicable, use suitable components to divert the air. Please observe the prescribed minimum distances at the installation site as outlined in section 5.3.1 "Assembly instructions".
the unit is defective or connected incorrectly in any way. Do not strip too much insulation from the connection cable, otherwise the admissible clearance/creepage distances from the terminal point may not be met.
2.9 IT safety instructions
To ensure the availability, confidentiality and integrity of data, products, networks and systems must be protected against unauthorised access.
Rittal enclosure cooling unit
5
2 Safety instructions
Such protection can be achieved only with organisation- Perform regular threat analyses
EN al and technical measures. To satisfy the increased safe- Rittal recommends that you perform regular threat
ty requirements, Rittal recommends the observance of
analyses.
the following measures. Furthermore, more detailed information can be found on the websites of Bundesamt für Sicherheit in der Informationstechnik (Federal Office
The threat analyses allow you to determine whether your adopted measures are effective.
for IT Security BSI).
Protect USB ports against access
2.9.1 Measures for products and systems Embed products and systems not in public networks. Make sure that the system is only operated in protect-
ed networks.
USB ports must be protected against physical access. Ensure that no unauthorised persons have access to USB ports.
Sensitive data can be read for an unauthorised access to USB ports.
Configure the firewall To protect your networks, and the embedded prod-
ucts and systems against external effects, configure a firewall. Also deploy a firewall for segmentation of a network or to isolate a controller.
Consider defence-in-depth mechanisms during the planning phase Consider defence-in-depth mechanisms for your sys-
tem planning. Defence-in-depth mechanisms cover several levels of
mutually coordinated security measures.
Restrict access authorisations Restrict access authorisations to networks and sys-
tems to only persons that need an authorisation.
Protect accesses Do not use the default passwords; instead, use se-
cure, long passwords containing numbers, a mix of upper case and lower case letters, symbols and no repetitions. Create random passwords with a password manager.
Deploy the current firmware version Ensure that the current Rittal firmware is deployed on
all devices. The firmware can be downloaded from the associated
product pages in the Internet. Observe the associated Release Notes for new firm-
ware versions.
Deploy current security software To identify and eliminate security threats, such as vi-
ruses, trojans and other malicious software, security software should be installed on all PCs and kept upto-date. Deploy whitelist tools to monitor the device context. Deploy an intrusion-detection system to validate the communication of your system.
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Rittal enclosure cooling unit
3 Product description
3 Product description
Refrigerant circuit with compression system
The refrigerant circuit with compression system is com- EN
3.1 Functional description and components
3.1.1 Function
prised of the following four main components: 1. Evaporator coil 2. Compressor
There are two separate cooling circuits installed in the cooling unit. One conventional refrigerant circuit (compression sys-
3. Condenser 4. Expansion valve
tem), and One heat pipe integrated into the condenser and
evaporator coil.
The evaporator coil fan draws hot air from the enclosure in the internal circuit of the cooling unit and passes it over the evaporator coil. After the evaporator coil, the
cooled air is fed back into the enclosure via the outlet
2
opening.
The air is cooled down by evaporating the refrigerant in
the evaporator coil. The refrigerant vapour is transported
by the compressor in the external circuit of the cooling
1
unit to the condenser. There, the refrigerant condenses
and becomes a liquid. The heat produced is dissipated
by the condenser fan. The downstream electronic ex-
11
9
pansion valve reduces the high pressure of the refriger-
8
5
ant, and the refrigerant is then fed back into the evapo-
7
rator coil.
10
3 Both the compressor and the two fans in the cooling unit
5
are activated via an inverter. This makes it possible to
control these components, so that the fan and compres-
6
sor may be activated for a longer time but at a lower out-
6
put and improved efficiency.
4
Fig. 1: Cooling circuit
Key 1 Compressor 2 Condenser (dual version) 3 Expansion valve 4 Evaporator coil (dual version) 5 Refrigerant circuit with heat pipe 6 Refrigerant circuit with compression system 7 Internal circuit 8 External circuit 9 Dryer/collector 10 Internal fan 11 External fan
Refrigerant circuit with heat pipe
The additional second refrigerant circuit operates without a compressor, expansion valve or other control elements, and is integrated into the evaporator coil and condenser as a heat pipe.
The refrigerant inside the heat pipe (R513A) absorbs thermal energy from the intake of enclosure air and evaporates. The gaseous refrigerant then rises through the pipeline until it reaches the condenser. The refrigerant is cooled down again in the condenser (provided Tu < Ti), and the heat released is emitted into the environment. Gravity then causes the liquid refrigerant to flow back down the pipelines. The whole cycle begins again.
In both cooling circuits, the individual components are connected with pipes in which the refrigerant R513A is circulating. This refrigerant is very environmentally friendly, thanks to the following properties: Does not deplete the ozone layer (ozone destruction
potential ODP = 0) Global Warming Potential (GWP): 631
Rittal enclosure cooling unit
7
3 Product description
3.1.2 Components
EN
1
6
7
8
2
9
3
10
11
4
12
13 5
14
Fig. 2:
Main components of cooling unit (SK 317880x/ SK 317980x/SK 3180800)
1a
6 15
7
2
8
9
3
10
11
4
12
13 5
1b 14
Fig. 3: Main components of cooling unit (SK 31848x0)
Key fig. 2 and fig. 3 1 Louvred grille 1a Top louvred grille 1b Bottom louvred grille 2 Service label 3 Air outlet, outside 4 Display including NFC interface 5 Air inlet, outside 6 Cover 7 Electrical connections and interfaces 8 Air inlet, inside 9 Mounting point, potential equalisation 10 Rating plate 11 Rear panel 12 Mounting point, IoT interface 13 Air outlet, inside 14 Foamed-in seal 15 Thread for eyebolt
3.1.3 Control Rittal enclosure cooling units are fitted with a controller for setting the functions of the cooling unit. Operation using this controller is described in section 7 "Operation".
3.1.4 Safety devices The cooling units are equipped with various features to
prevent inadmissible pressure increases in the cooling cycle. If an unusually high pressure nevertheless occurs, the compressor may be temporarily and automatically deactivated via a safety device. Once the pressure drops back below the admissible pressure, the unit will automatically resume operation. Temperature monitoring prevents the evaporator coil from icing over. If there is a risk of icing, the compressor switches itself off and automatically switches itself back on again at higher temperatures. The compressor is monitored and protected by the inverter to prevent overloading. The fans have a built-in overload protection with automatic reset. In order to allow a reduction of pressure inside the compressor and hence a safe restart, once it has been switched off (e.g. upon reaching the set temperature via the door limit switch function or via de-energising), the device will switch back on with a delay of 180 seconds. The device has a floating contact on the connection pins on terminals 2 and 3 of the signal connector (X3), via which system messages from the device may be polled, e.g. using a PLC.
3.1.5 Condensation At high levels of humidity and low temperatures inside the enclosure, condensate water may form on the evaporator coil. All cooling units except SK 3178801 and SK 3179801 have automatic electric condensate evaporation. The thermal component used for this purpose is based on self-regulating PTC technology. Condensate water arising on the evaporator coil is collected in a tank in the external circuit of the cooling unit, and partially evaporated via the airflow. When the water level rises, the water enters the PTC thermal component and is evaporated (through-flow heater principle). The water vapour streams out of the cooling unit with the airflow from the external fan. If there is a short-circuit in the PTC element, the separate PTC fuse will trip and the condensate can be drained off via the safety overflow. The condensate is routed out of the unit via the evaporator tray overflow. For this purpose, a hose may be connected to the condensate nozzle (see section 5.3.6 "Connect the condensate water discharge").
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Rittal enclosure cooling unit
3 Product description
3.1.6 Filter mats
The cooling unit is state of the art and built according to
The entire cooling unit condenser is covered with a dirt- recognised safety regulations. Nevertheless, improper EN
repelling, easy-to-clean hydrophobic RiNano coating. In use can pose a threat to the life and limb of the user or
many applications, therefore, the use of filter media is
third parties, or result in possible damage to the system
unnecessary, particularly with dry dusts.
and other property.
For dry, coarse dust and lint in the ambient air, we rec-
ommend installing an additional PU foam filter mat (avail- Consequently, the cooling unit must only be used prop-
able as an accessory) in the cooling unit. Depending on erly and in a technically sound condition! Any malfunc-
the incidence of dust, you will need to replace the filter tions which impair safety should be rectified immediate-
mat from time to time (see section 7.5.2 "Configura-
ly.
tion").
For oily ambient air, we recommend the use of metal fil- Proper use also includes the observance of the docu-
ters (also available as an accessory). These may be
mentation provided, and compliance with the inspection
cleaned with suitable detergents and reused.
and maintenance conditions.
3.1.7 Door limit switch
The cooling unit may be operated with a floating door limit switch connected. The door limit switch is available as accessory from Rittal.
The door limit switch function causes the fans and the compressor in the cooling unit to gradually slow down and then switch off after approximately 15 seconds when the enclosure door is opened (contacts 5 and 6 closed). This prevents the formation of condensate water inside the enclosure while the enclosure door is open. In order to prevent damage to the unit, it is equipped with an ON delay: The evaporator fan will cut in again after a delay of a few seconds on closure of the door.
Please note that no external voltage may be applied to the door contacts (connection clamps 5 and 6).
Rittal GmbH & Co. KG is not liable for any damage which may result from failure to comply with the documentation provided. The same applies to failure to comply with the valid documentation for any accessories used. Inappropriate use may be dangerous. Examples of inappropriate use include: Use of the cooling unit over long periods with the en-
closure open. Use of impermissible tools. Improper operation. Improper rectification of malfunctions. Use of accessories not approved by Rittal GmbH &
Co. KG.
3.2 Intended use, foreseeable misuse
The cooling unit is intended exclusively for cooling closed control cabinets as well as for professional use. Any other use is not permitted. The cooling unit is intended for indoor and semi-outdoor use as standard. Semi-outdoor use is defined as follows: Siting in a roofed outdoor area.
The cooling unit is protected from the direct impacts of weather conditions such as precipitation or permanent sunlight. Always use within the admissible temperature range. The device is secure from unauthorized public access. The unit must not be installed and operated in locations which are accessible to the general public. The unit is designed solely for stationary use. The cooling unit must not be used in environments with conductive, flammable and explosive dusts. These include: Graphite dusts Metal dusts Cereal dusts Wood dusts Textile fibres and lint
Rittal enclosure cooling unit
9
3 Product description
3.3 Supply includes
EN
Description
Enclosure cooling unit Shipping bag with Assembly and installation instructions
Grub screw M8x40
Illustration
SK 317880x SK 317980x SK 3180800
SK 3184800 SK 3184840
1x
1x
1x
4x
Corner bracket with M8 nut
4x
Spring clip
2x
Locator clip with cable fastening
Signal connector Power plug Sealing tape 10x10 mm for installation Tab. 1: Supply includes
1x
2x
1x
1x
1x 1.74 m
1x 2.7 m
10
Rittal enclosure cooling unit
4 Transport and handling
4 Transport and handling
4.1 Delivery
The cooling unit is supplied in one packaging unit. Check the packaging carefully for signs of damage.
Traces of oil on damaged packaging indicate a loss of refrigerant and/or a leak in the cooling unit. Any packaging damage may be the cause of a subsequent functional failure.
1
EN
2
4.2 Unpacking
Remove the packaging materials from the cooling unit.
Note: After unpacking, the packaging materials must be disposed of in an environmentally friendly way.
Check the cooling unit for any damage that may have occurred during transport.
Note: Damage and other faults, e.g. incomplete delivery, should be reported immediately, in writing, to the shipping company and to Rittal GmbH & Co. KG.
Check the supply contents for completeness (see section 3.3 "Supply includes").
4.3 Transport
Cooling unit types SK 317880x/SK 317980x/ SK 3180800 weigh up to 16 kg. Cooling unit types SK 31848x0 weigh up to 27 kg.
Caution! Please note the maximum weights that may be lifted by individuals. It may be necessary to use lifting gear.
An M12 thread is provided on top of the cover on unit types SK 31848x0 for screw-fastening a Rittal eyebolt (e.g. belonging to an enclosure). The cooling unit is readily transported with the aid of lifting gear and an indoor crane.
Note: An eyebolt with M12 thread may be ordered as an accessory from Rittal (see section 13 "Accessories").
Fig. 4:
Thread for eyebolt on top of the cover (only unit type SK 31848x0)
Key 1 Cover 2 M12 thread
Before transporting by crane, please ensure that the lifting gear and crane have sufficient load capacity to transport the cooling unit safely.
Never allow anyone to stand beneath a suspended load, even for a short time, during transportation by crane.
Protect the lifting gear on the crane hook from load deflection, because the load's centre of gravity may be off-centre.
First position the cooling unit close to the installation site and protect from accidentally being knocked over.
Transport of a fitted cooling unit Shipping braces (such as a structure made from
square timbers or boards) must be used when transporting cooling units already mounted on the enclosure fig. 5 and fig. 6).
These braces support the cooling unit and prevent it from slipping in case of impact.
To prevent paint abrasion, please place bubble wrap or similar between the square timbers and the cooling unit. Use a sufficiently large pallet to prevent it tipping over. If the cooling unit has been mounted on a door, close the door and keep it closed during transportation.
Rittal enclosure cooling unit
11
4 Transport and handling
EN
1
2 3 4
Fig. 5: External mounting of the shipping braces Key 1 Fitted cooling unit 2 Bubble wrap 3 Supporting structure 4 Pallet underneath the cooling unit
1 2 3
4
Fig. 6: Internal mounting of the shipping braces Key 1 Fitted cooling unit 2 Bubble wrap 3 Supporting structure 4 Pallet underneath the cooling unit
12
Rittal enclosure cooling unit
5 Installation
5 Installation
The installation site must be free from excessive dirt,
aggressive ambient conditions and moisture.
EN
5.1 Safety instructions
Work on electrical systems or equipment may only be carried out by an electrician or by trained personnel under the guidance and supervision of an electrician. All work must be carried out in accordance with electrical engineering regulations.
The ambient temperature must not exceed 60 °C. It must be possible to fit a condensate water discharge
(see section 5.3.6 "Connect the condensate water discharge"). The mains connection data as stated on the rating plate of the cooling unit must be guaranteed.
The cooling unit may only be connected after the aforementioned personnel have read this information! Electromagnetic interference (EMI)
Use only insulated tools.
Interfering electrical installations (high frequency) must
Follow the connection regulations of the appropriate electrical supply company. Otherwise, there is risk of
be avoided. Signal cables must be laid separately from live cables.
injury from electric shock if the connection to the unit is defective or connected incorrectly in any way.
5.3 Assembly procedure
The cooling unit must be connected to the mains via an all-pole disconnecting device to overvoltage category III (IEC 61058).
Do not strip too much insulation from the connection cable, otherwise the admissible clearance/creepage distances from the terminal point may not be met.
Pin 4 on the signal connector should not be used. Otherwise, the admissible clearance/creepage distance between the alarm relay and door contact connections will not be met.
The cooling unit is not de-energised until all of the voltage sources have been disconnected!
Do not assemble and re-activate the device until it is completely dry.
5.3.1 Assembly instructions Before starting assembly, please ensure that the fol-
lowing tools are available:
Allen key SW4 Open-end spanner SW13
Phillips-head screwdriver Before assembling, please ensure that the enclosure
is sealed on all sides (IP 54). Increased condensation will occur later during operation if the enclosure is not airtight. If applicable, additionally fit a door limit switch (such as 4127010) to the enclosure which switches off the cooling unit when the enclosure door is opened to prevent excessive condensation (see section 3.1.7 "Door
Please note the maximum weights that may be lifted by individuals. It may be necessary to use lifting gear.
During assembly, the cooling unit is at risk of dropping through the mounting cut-out.
Always wear the required personal safety equipment when working on this device.
Please be sure to observe the applicable regulations
limit switch"). Please ensure that the electronic assemblies in the en-
closure allow the even circulation of air. Measure the distance "x" (fig. 7) from electronic com-
ponents and other installed equipment inside the enclosure so that the required air circulation is not obstructed.
governing electrical installations of the country in
x
which the device is installed and operated as well as
national regulations for accident prevention. Please
also observe any internal company regulations, such
as work, operating and safety regulations.
The technical specifications and limit values stated
must not be exceeded under any circumstances. In
particular, this applies to the specified ambient tem-
perature range and IP protection category.
5.2 Siting location requirements
When choosing the installation site for the enclosure, please observe the following: The site for the enclosure, and hence the positioning
of the cooling unit, must be carefully selected so as to ensure good ventilation (distance between cooling units at least 200 mm, distance from wall see distance "y" in fig. 7 or tab. 2). The cooling unit must be installed and operated with a maximum deviation of 2° from the vertical.
Fig. 7:
y
Air circulation inside the enclosure
Rittal enclosure cooling unit
13
5 Installation
EN Model No.
Dimensions x and y [mm]
SK 317880x
100
SK 317980x
125
1
2
SK 3180800
155
SK 31848x0
125
Tab. 2: Dimensions "x" and "y"
Under no circumstances should the air inlet and outlet openings of the cooling unit be obstructed. Only in this way is it possible to ensure that the maximum cooling output is available.
Please ensure that the cold airflow from the cooling unit is not directed at active components.
Fig. 9: Mounting options (example illustration)
Key 1 External mounting 2 Internal mounting
Fig. 8:
Never direct the cold airflow at active components (example illustration)
If appropriate, install components to divert the air. When installing in a dismantled door or side panel,
please ensure that it cannot fall over when installing the cooling unit in the mounting cut-out.
Note: The pictures in this chapter illustrate the installation of the cooling unit in an enclosure door. Installation in a side panel is carried out in the same way.
5.3.2 Mounting options Essentially, there are two options for fitting the cooling unit on an enclosure door or side panel.
External mounting: All of the cooling unit is outside the enclosure.
Internal mounting: All of the cooling unit is inside the enclosure. Only the louvred grilles project on the outside.
Your chosen installation option will ultimately depend on how much space you require inside and outside of the enclosure. The various mounting options have no influence on the cooling output of the cooling unit, which remains the same in all cases. If there are a large number of components installed in-
side the enclosure, external mounting of the cooling unit may be appropriate. In such cases, the space inside the enclosure may be insufficient for internal mounting, or it may not be possible to guarantee adequate cooling of all components inside the enclosure. If the space surrounding the enclosure is limited, internal mounting may be appropriate to keep essential escape routes clear.
5.3.3 Make a mounting cut-out in the enclosure In order to mount the cooling unit on the enclosure, a suitable mounting cut-out must be made in the door or side panel of the enclosure.
Note: The dimensions of the mounting cut-outs can be found in section 12.1 "Representation of mounting cut-outs".
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Rittal enclosure cooling unit
5 Installation
Using the diagrams in section 12.1 "Representation of For SK 31848x0: Insert two locator clips at the top so
mounting cut-outs", calculate the required dimensions
that they latch securely home into the cooling unit.
EN
for your mounting cut-out.
Make the required mounting cut-out.
Carefully deburr the cut-out to prevent injuries caused
by sharp edges.
Caution!
There is a risk of injury on sharp cut-outs
which have not been properly deburred,
especially while mounting the cooling
unit.
1.
5.3.4 External mounting of the cooling unit
Note: In these instructions, we have only provided images of units SK 31848x0 in cases where assembly deviates from the illustration given.
Screw two grub screws into the blind rivet nuts in the corners at the bottom rear of the cooling unit (torque = 5 Nm).
2. CLICK!
Fig. 12: Inserting the locator clips (for SK 31848x0)
These clips will prevent the cooling unit from falling out of the mounting cut-out later on before it is properly secured using the corner brackets with nuts.
Note: In the subsequent step, take care to ensure that the cooling unit only rests on the grub screws, never on the seal, otherwise the seal could become damaged.
Lift up the cooling unit, and initially set it down with the two outside lower grub screws resting on the enclosure door or side panel.
Fig. 10: Screw the lower grub screws into place
For SK 317880x, SK 317980x and SK 3180800: Insert a locator clip at the top left so that it latches securely home into the cooling unit.
1.
CLICK!
2.
Fig. 11: Insert the locator clip (for SK 317880x, SK 317980x and SK 3180800)
Rittal enclosure cooling unit
Fig. 13: Position the cooling unit and push it home
For SK 317880x, SK 317980x and SK 3180800: Push the cooling unit into the mounting cut-out at the top until the clip behind the cut-out audibly latches home.
15
5 Installation
EN
CLICK!
Fig. 14: Lock home the clip behind the cut-out (for SK 317880x, SK 317980x and SK 3180800)
For SK 31848x0: Push the cooling unit into the mounting cut-out at the top until both clips behind the cutout audibly lock home.
Fig. 17: Secure with corner brackets at the top
In the same way, attach the two corner brackets with nuts onto the grub screws at the bottom and secure (torque = 5 Nm).
CLICK!
Fig. 15: Lock home the clips behind the cut-out (for SK 31848x0)
Similarly, at the top, screw two grub screws into the blind rivet nuts in the rear corners of the cooling unit (torque = 5 Nm).
Fig. 18: Secure with corner brackets at the bottom
Insert one spring clip half-way up the rear of the cooling unit on both the left and right.
CLICK!
Fig. 16: Screw the upper grub screws into place
Attach the two corner brackets with nuts to the grub screws at the top and secure (torque = 5 Nm).
Fig. 19: Secure with spring clips
5.3.5 Internal mounting of the cooling unit SK 317880x, SK 317980x and SK 3180800 Grasp hold of the recessed handles on the left and
right of the louvred grille and pull the louvred grille gently upwards out of the device mounting clips.
16
Rittal enclosure cooling unit
5 Installation
Pull the top louvred grille away from the mounting
clips, taking care to hold it as straight as possible.
EN
Fig. 20: Pull off the louvred grille (top)
Next, pull the louvred grille out of the mounting clips at the bottom as well and pull it forwards a maximum of 100 mm away from the device, taking care to hold it as straight as possible.
Fig. 23: Pull off the top louvred grille.
Set the top louvred grille down in a safe place. Disconnect the connector on the display.
Fig. 21: Pull off the louvred grille and the connector
Disconnect the connector on the display. Place the louvred grille down in a safe place.
SK 31848x0 Press the outside buttons on the right and left of the
lower louvred grille and pull it away from the device.
Fig. 24: Pull off the connector
Carefully remove the connection cable from the groove in the lower louvred grille.
1.
1.
1. 2.
3. 2.
Fig. 22: Pull off the lower louvred grille Rittal enclosure cooling unit
Fig. 25: Remove the connection cable
Release the range limiters of the lower louvred grille from their holders on the left and right of the device.
17
5 Installation
EN
1. 2.
Top
2.
1.
Fig. 26: Release the range limiters
Next, pull the lower louvred grille upwards at an angle out of the bottom holders and set it down in a safe place.
Bottom
Fig. 29: Position the joint edge at the top
For SK 317880x, SK 317980x and SK 3180800: At the top left, insert a locator clip so that it latches securely home into the cooling unit.
CLICK!
1.
CLICK!
2.
Fig. 27: Pull off the lower louvred grille.
All device versions Apply sealing tape all around the front of the cooling
unit.
Fig. 30: Latch home the locator clip (for SK 317880x, SK 317980x and SK 3180800)
For SK 31848x0: Insert two locator clips at the top so that they latch securely home into the cooling unit.
CLICK!
CLICK!
1.
2. CLICK!
Fig. 28: Apply sealing tape
Start in the top centre of the device to ensure that the joint edge is not at the bottom of the device where water from outside could penetrate.
Fig. 31: Latch home the locator clips (for SK 31848x0)
These clips will prevent the cooling unit from falling out of the mounting cut-out later on before it is properly secured with the grub screws.
18
Rittal enclosure cooling unit
5 Installation
At the bottom, screw two grub screws into the blind For SK 31848x0: Push the cooling unit into the mount-
rivet nuts in the front corners of the cooling unit (torque
ing cut-out at the top until the clips behind the cut-out EN
= 5 Nm).
audibly latch home.
CLICK!
CLICK!
Fig. 32: Screw the bottom grub screws into place
Lift up the cooling unit, and set it down initially with the two inside lower grub screws resting on the enclosure door or side panel.
Fig. 35: Lock home the clips behind the cut-out (for SK 31848x0)
Similarly, at the top, screw two grub screws into the blind rivet nuts at the front corners of the cooling unit (torque = 5 Nm).
Fig. 33: Position the cooling unit and push it into place
For SK 317880x, SK 317980x and SK 3180800: Push the cooling unit into the mounting cut-out at the top until the clip behind the cut-out audibly latches home.
Fig. 36: Screw the top grub screws into place
Attach the two corner brackets with nuts to the threaded grub screws at the top and secure (torque = 5 Nm).
CLICK!
Fig. 34: Latch home the clip behind the cut-out (for SK 317880x, SK 317980x and SK 3180800)
Rittal enclosure cooling unit
Fig. 37: Secure with corner brackets at the top 19
5 Installation
In the same way, insert the two corner brackets with
EN
nuts onto the grub screws at the bottom and secure
(torque = 5 Nm).
For SK 31848x0: Release the two locator clips at the top and insert one of the clips into the rear of the device for cable fixing and routing. The second clip may likewise be inserted into the top rear of the device.
Fig. 38: Secure with corner brackets at the bottom
Insert one spring clip half-way up the rear of the cooling unit on both the left and right.
CLICK!
Fig. 39: Secure with spring clips
For SK 317880x, SK 317980x and SK 3180800: Release the locator clip at the top left and, where applicable, insert it into the rear of the device for cable fixing and routing.
1. 2.
Fig. 40: Release the locator clip (for SK 317880x, SK 317980x and SK 3180800)
1.
2.
Fig. 41: Release the locator clips (for SK 31848x0)
SK 317880x, SK 317980x and SK 3180800 Bring the louvred grille close to the device. Connect the connector at the bottom of the display. Place the louvred grille onto the mounting clips at the
top and bottom, keeping it as straight as possible, and press it fully onto the cooling unit.
SK 31848x0 Holding the lower louvred grille at an angle from
above, engage it fully with the bottom clips. Insert the range limiters for the bottom louvred grille
into their holders on the left and right of the device. Carefully push the connection cable section by section
into the groove in the lower louvred grille. Insert the connector into the bottom of the display. Position the top louvred grille onto the mounting clips. Snap the bottom louvred grille completely onto the
cooling unit.
5.3.6 Connect the condensate water discharge There is a condensate water evaporator fitted in the external circuit of the cooling unit. With an enclosure connected, this condensate water evaporator may typically evaporate condensate water volumes of up to 100 ml/h. If larger quantities of condensate water are produced, a condensate water discharge hose may additionally be fitted. This hose allows condensate water to be routed out of the cooling unit pressurelessly. A suitable hose is available as an accessory from Rittal (see section 13 "Accessories"). Please follow the instructions given below: The hose must be laid with an adequate and constant
gradient to prevent siphoning. The hose must be laid without any kinks. If extended, the cross-section of the hose must not be
reduced.
20
Rittal enclosure cooling unit
5 Installation
The hose should be routed to a drain or external con- For applications in UL-approved facilities, any CCMR-
densate water evaporator by the customer.
type fuse from Littelfuse may be used, or alternatively, EN
a UL-certified air circuit-breaker.
Suitable miniature circuit-breakers and circuit-break-
ers can be found under Rittal accessories (see sec-
tion 10 "Technical specifications" and section 13 "Ac-
cessories").
Thanks to the integral inverter technology, convention-
al start-up currents (start-up of internal motors) are not
1
externally visible.
The mains infeed and the signal cable may optionally
be of a shielded design. The cable shield may be con-
2
tacted at the potential equalisation point.
3
No additional temperature control may be connected
upstream of the unit at the supply end
Fig. 42: Connection for condensate water discharge hose
Key 1 Connection point 2 Cable tie 3 Condensate hose
Connect a suitable hose to the condensate discharge and secure with a cable tie.
Lay the hose as per the instructions above.
5.4 Electrical connection
5.4.1 Notes on electrical installation When carrying out the electrical installation, it is impor-
tant to observe all valid national and regional regulations as well as the provisions of the responsible power supply company. Electrical installation must only be carried out by a qualified electrician who is responsible for compliance with the existing standards and regulations. All cables have to be insulated for the maximum voltage of the power supply.
Connection data The connected voltage and frequency must corre-
spond to the ranges stated on the rating plate. The units support multiple voltages. The cooling unit must be connected to the mains via an all-pole disconnect to overvoltage category III (IEC 61058-1). The unit is intrinsically safe and does not require any additional external safety devices for safe operation. The connection cable must be protected with a miniature circuit-breaker. To ensure the proper functioning of internal pressostats in the event of a malfunction, a line fuse of no less than 15 A is required. If a motor circuit-breaker or circuit-breaker is used, it should be selected in accordance with EN 60898-1 (tripping characteristic type D).
Overvoltage protection and supply line load
Rittal recommends the following measures for protecting the cooling units in non-standard environmental and connection conditions.
The unit does not have its own overvoltage protection. Measures must be taken at the supply end by the switchgear manufacturer or operator to ensure effective protection against lightning and overvoltage.
The units are classified as overvoltage category III and meet the requirements of standard EN 60204-1 on the electrical equipment of machines. The mains voltage must not deviate by more than the tolerance specified in section 10 "Technical specifications".
The units are high-voltage tested ex works. An additional high voltage test must only be carried out with a DC voltage supply source (1500 VDC max.).
EMC interference signals arising in local industry and plant networks may deviate significantly from those specified in the standards. In these types of network situations, an external EMC filter should be used.
If the combined output of the frequency converters, power converters or transformers in the network where the device is being operated is >70 kVA, the customer must connect a Class II surge voltage protector in the mains supply line upstream of the cooling unit. The surge voltage protector must be designed to EN 61800 -1. The following values may be assumed as starting-points for the design:
Transformers, power electronics
Assumed discharge energy
70 kVA...100 kVA
40 J
100 kVA...200 kVA
80 J
200 kVA...400 kVA
160 J
400 kVA...800 kVA
320 J
Tab. 3: Design of the surge voltage protector
Technical specifications for a suitable overvoltage protection module:
Rittal enclosure cooling unit
21
5 Installation
Terminal voltage Uc = 350...400 V, 50/60 Hz
Door limit switch
EN Maximum current Imax = 40 kA
Each door limit switch can only be assigned to one
Rated current In = 20 kA
cooling unit.
Breakdown voltage Up = 1.75 kV
Several door limit switches may be operated in parallel with one cooling unit.
Three-phase devices
There is no need to observe a counter-clockwise or clockwise phase rotation when making the electrical connection to a three-phase voltage supply. The electronics incorporated into the devices automatically
The minimum cross-section for the connection cable is 0.3 mm² for a cable length of 2 m.
The line resistance to the door limit switch must not exceed a maximum of 50 .
The maximum admissible line length is 10 m.
create the required phase rotation.
The door limit switch only supports a floating connec-
Outgoing equipment is monitored by the inverter, and
tion; no external voltages.
deactivated in the event of a malfunction in the elec- The contact of the door limit switch must be closed
tricity supply.
when the door is open.
The safety extra-low voltage for the door limit switch is
SCCR Short-circuit resistance Under UL508A Supplement SB, the standard SCCR for cooling units is 5 kA. If the device is installed on a UL508A feeder circuit
provided by the internal power pack: Current approx. 5 mA DC. Connect the door limit switch to terminals 5 and 6 of the signal connector.
>5 kA, a protective device with the corresponding
SCCR of the feeder circuit and a peak let-through of
<5 kA should be connected upstream in the cooling unit
branch.
1
2
3
4
5
6
Fig. 43: Mains connection and interfaces
Key 1 X1: Mains connection 2 X2: IoT Interface (RS485) 3 X3: Signal connections (external temperature sensor,
door operated switch and alarm relay) 4 X4: USB-C interface 5 X5: Rittal Smart Service Portal (LAN) 6 Potential equalisation (M6)
Potential equalisation If, for EMC reasons, the unit is to be integrated into the customer's existing potential equalisation system, a conductor may be connected to the potential equalisation connection point. The connection point is labelled with the required switch symbol (fig. 43, item 6).
Attach the potential equalisation to the unit's connection point using the screw, washer and contact washer.
22
Rittal enclosure cooling unit
5 Installation
-EC1 X1
L1 L2 PE
RS-485
X2
1-9
USB-C
X4
1-24
LAN
X5
1-9
EN
Fig. 44: Potential equalisation arrangement
Key 1 Ring terminal with PE conductor 2 Contact washer 3 Washer 4 Screw
Note: According to the standard, the PE conductor in the mains connection cable is not classed as an equipotential bonding conductor.
5.4.2 Install the power supply
Note: We recommend that the power supply ca-
ble and the signal cable should be of a shielded design. The cable shield can be contacted at the potential equalisation point (fig. 43).
Alarm
BUS
USB-C
LAN
K1
2
3
X3
COM
NO
Door
5
6
X3
NTC
7
8
X3
Fig. 46: Circuit diagram SK 3184840
Key X1 Main terminal strip K1 Alarm relay Door Door limit switch (optional, without door limit switch: ter-
minal 5, 6 open) NTC External temperature sensor (optional) X2 RS 485 interface X4 USB-C interface X5 Rittal Smart Service Portal (LAN)
Attachment option for cable routing
By moving a locator clip and connecting it to the rear of the device near the electrical connections, it can be used as a cable attachment. Depending on the type of installation, remove the loca-
tor clip from the front (internal mounting) or rear (external mounting) of the unit.
Remove the mains connector from the dispatch bag and connect to the mains as shown on the connection diagram (fig. 45 or fig. 46).
Use copper conductors only to connect the supply cable to the mains connector.
-EC1 X1
RS-485
USB-C
X2
X4
LAN
X5
1.
L1 L2/N PE
1-9
1-24
1-9
Alarm
BUS
USB-C
LAN
2.
K1
2
3
X3
COM
NO
Door
5
6
X3
NTC
7
8
X3
Fig. 45: Circuit diagram SK 3178800, SK 3178801, SK 3179800, SK 3179801, SK 3180800, SK 3184800
Fig. 47:
Removing the locator clips from the front of the device with the installation type "internal mounting" (sample illustration)
Rittal enclosure cooling unit
23
5 Installation
EN
AC
DC
cos = 1
I max. = 2 A U max. = 250 V
I max. = 2 A U max. = 30 V
Tab. 4: Contact data
2. 1.
Fig. 48:
Removing the locator clips from the rear of the device with the installation type "external mounting" (sample illustration)
Next, insert the locator clips onto the rear of the device near the electrical connections.
5.4.4 Interfaces The cooling unit has the following interfaces for communicating with external systems: USB-C interface on the rear RS 485 interface on the rear NFC interface on the front Interface to the Rittal Smart Service Portal (LAN) at the
rear
USB-C interface An USB-C interface (X4) is located at the rear near the top. A laptop may be connected here for easy update (see section 7.3 "Updater program"). Other USB units are not recognized on this connection.
Fig. 49: Locator clip for cable routing (sample illustration)
Use the locator clips to secure the cables (e.g. using cable ties).
5.4.3 Connect the alarm relay System messages from the cooling unit may be output to an external signal source via a floating relay output. The relay output is in the de-energised state NO (Normally Open). As soon as voltage is applied to the cooling unit, the alarm relay picks up. This is the factory setting for the cooling unit's normal operating state. As soon as a system message occurs or the power supply is interrupted, the alarm relay will drop out and open the contact. The switch logic of the alarm relay can be altered using the Rittal Scan & Service app (see section 7.5.2 "Configuration"). Connect a suitable connection cable to terminal 3
(alarm K1) of the signal connector (X3). Configure the alarm relay you wish to use to output
system message messages (see section 7.4.8 "Evaluate system messages").
RS 485 interface An RS 485 interface is located on the rear of the connection box (X2). The IoT interface for linking the cooling unit to the customer's own monitoring, energy management and/or superordinate systems may be connected here. Connect the IoT interface (accessory) to the RS 485
interface (X3). Note: A direct connection to the cooling unit via the RS 485 interface is not possible.
NFC interface You can access the cooling unit with the Rittal Scan & Service app via the integral NFC interface. Apps other than those supplied by Rittal are not supported.
Fig. 50: Download options for the Rittal Scan & Service app
Rittal Smart Service Portal (LAN) There is a LAN interface (X5) at the rear, which you can use to connect directly to the Rittal Smart Service Portal.
24
Rittal enclosure cooling unit
6 Commissioning
Note: The oil must collect in the compressor in order to ensure adequate lubrication and cooling. For this reason, do not operate the cooling unit for at least 30 minutes after assembling the equipment.
Observe the aforementioned waiting period of at least 30 minutes before commissioning the unit after assembly.
Remove the protective film from the red lug on the display.
Next, switch on the voltage supply to the cooling unit. All segments in the 7-segment display will be illuminated in sequence, followed a short time later by the start screen. You can now make your individual settings on the de-
vice, such as setting the temperature (see section 7 "Operation").
Note: It is not necessary to carry out leak or pressure tests on the cooling unit prior to commissioning. Rittal has already done this in the factory.
Note: When the cooling unit starts up, the current software version appears in the display. Before commissioning, Rittal recommends checking the Rittal website for any software updates. If a more recent software version is availa-
ble, please update the cooling unit software (see section 7.3 "Updater program").
6 Commissioning
EN
Rittal enclosure cooling unit
25
7 Operation
7 Operation EN The cooling unit is operated from the display on the front
keys). The relevant parameters also appear in the display.
of the device (fig. 2 or fig. 3, item 4).
7.2 General information about programming
7.1 Control via the display
Use the arrow keys and the Home key directly on the display to set the main parameters within the preset
ranges (min. value max. value).
In principle, the programming of all editable parameters
is identical.
To operate the touch elements, place one finger fully
1
over the marked or illuminated key.
To enter programming mode:
Briefly press the Home key.
2
In addition to the displayed internal temperature, the
3
Home key and both arrow keys on the display will be
back-lit.
4
Press the Home key again for approx. 3 seconds.
5
"Cod" will appear in the display.
Briefly press the Home key again.
6
Set the device PIN using the arrow keys.
The number "22" is preset by default.
7
Press the Home key again to confirm the set code.
8
If the code has been correctly entered, the "tSE" (tem-
perature settings) menu will appear. If no entry is made
for 15 seconds, exit the menu and the start screen will
9
automatically appear showing the interior temperature.
Alternatively, keep the Home button pressed down for
approximately 6 seconds.
This will take you straight back to the start screen.
Fig. 51: Display
Key 1 "NFC" icon 2 "Master" icon 3 "Slave" icon 4 7-segment display (3x) 5 "Celsius" unit 6 "Fahrenheit" unit 7 "Down" arrow key 8 "Up" arrow key 9 Home key
The cooling unit operates automatically, in other words, as soon as the power supply is switched on, the evaporator fan (see fig. 1, item 10) will start running and circulating the air inside the enclosure. The compressor and condenser fan are regulated by the controller. The display has a three-digit, 7-segment display (fig. 51, item 4). After switching on the power supply, the internal temperature appears here after a short time (approx. 10 seconds) and will be permanently displayed as long as there are no error or system messages. If such messages do occur, they will alternate with the temperature display. The device is programmed using the control components on the display (Home and OK keys and arrow
After activating programming mode, you can navigate through the menus and change the settings as follows: Press on the arrow keys to page through all menus
and settings at the current level or to increase or reduce a number. Briefly press the Home key to switch to a sub-menu. Press the Home key for around 3 seconds to switch to the menu above or to confirm a setting (within the prescribed limits). If a number or setting is changed, the message "ACC" will appear in the display for approximately 1 second. After that, the next menu up will appear. More extensive settings can be made with the Rittal Scan & Service app via the NFC interface (see section 7.5 "Rittal Scan & Service app").
7.3 Updater program
Software updates can be carried out using the Updater program. The USB-C interface on the rear of the cooling unit serves as an interface. The Updater program can be found in the Downloads section of the product website.
26
Rittal enclosure cooling unit
7 Operation
7.4 Setting options via the display
EN
7.4.1 Selecting a control mode
The cooling unit controls cooling output according to one of the following three temperature values:
Internal temperature (factory setting): The temperature at which air is drawn out of the enclosure into the cooling unit.
External sensor: The temperature measured with an external temperature sensor at a so-called hot spot in the enclosure.
Outlet temperature: The temperature measured with an external temperature sensor at the cold air outlet from the cooling unit.
Control mode "external sensor" Please observe the following when selecting the sensor position: The sensor must not be influenced directly by the cold air expelled from the
cooling unit, be influenced by external heat sources or heat radia-
tion, be exposed to humidity, have its connection cable laid in the vicinity of AC ca-
bles, be exposed to different temperature levels within the
first 10 cm of the connection cable. The sensor must be located within the effective range of the cooling
unit, be surrounded by adequate moving air which has
blended well with the air expelled by the cooling unit, be at an adequate distance from solid and liquid sub-
stances.
Note: The external temperature sensor is available as accessory from Rittal (see section 13 "Accessories").
Control mode "outlet temperature" Attach the temperature sensor to the marking in front
of the cooling unit's cold air outlet using a cable tie (fig. 52).
Fig. 52: Temperature sensor in front of cold air outlet (example illustration)
Note: The sensor element must not be in contact with the enclosure.
Note: To ensure the accuracy of the outlet temperature, at least 50% of the total cooling output should be installed as heat loss. The output can be taken from the characteristic curve for this unit.
Selecting a control mode Briefly press the Home key in the "tSE" menu.
The sub-menu "Con" (control mode) will appear for you to select the control mode. Choose your preferred control mode using the arrow keys. "Int": Control mode "Internal temperature" "ESt": Control mode "External sensor temperature" "Out": Control mode "Outlet temperature" Keep the Home key pressed down for around 3 seconds to switch to the next menu up. If the control mode is altered, the message "ACC" will appear in the display for approximately 1 second. After that, the next menu up "Con" will appear.
7.4.2 Setting the target temperature Briefly press the Home key in the "tSE" menu.
The sub-menu "Con" (control mode) will appear for you to select the control mode. Use the arrow keys to select the "SP" (setpoint) menu and briefly press the Home key again. The currently set temperature will be displayed. Change the value using the arrow keys until you reach the required set temperature. Depending on the control mode, the set temperature can be changed within the following limits.
Rittal enclosure cooling unit
27
7 Operation
EN
Display Parameter
Setpoint
Factory setting
1 s
"Int" "Est"
Internal temperature
External sensor
20 °C (68 °F) ...
50 °C (122 °F)
35 °C (95 °F)
"Out"
Outlet temperature
18 °C (64 °F) ...
28 °C (82 °F)
Tab. 5: Temperature setting range
24 °C (75 °F)
Keep the Home key pressed down for around 3 seconds to switch to the next menu up.
If you have changed the set temperature, the message "ACC" will appear in the display for approximately 1 second. After that, the next menu up ("SP") will appear.
7.4.3 Setting the unit
All temperature values for the unit may be displayed either in degrees Celsius "°C" or degrees Fahrenheit "°F". When changing the unit, all temperature settings are converted automatically. Briefly press the Home key in the "tSE" menu.
The sub-menu "Con" (control mode) will appear for you to select the control mode. Use the arrow keys to select the "CF" (Celsius/Fahrenheit) menu and briefly press the Home key again. The currently set unit will be displayed. Use the arrow keys to switch between the two setting options until your preferred unit is displayed. Keep the Home key pressed down for around 3 seconds to switch to the next menu up. If you have changed the set unit, the message "ACC" will appear in the display for approximately 1 second. After that, the next menu up ("CF") will appear.
Fig. 53: Percentage symbol being refreshed
The entire test takes around 7 minutes. When the test is complete, in the event of an error "Err" will appear in the display; otherwise it will show "OK". Briefly press the Home key to switch back to the start
screen.
7.4.5 Manually acknowledge a system message For system messages requiring a manual reset, the message "rSt" will appear in the display alternating with the system code(s) and the temperature display. First, rectify the cause of the system message. Then, to acknowledge the system message, press
then Home key followed by the two arrow keys simultaneously for three seconds. "ACC" appears in the display to confirm acknowledgement.
7.4.4 Launching test mode
The control system features a test function, during which the cooling unit commences cooling operation independently of the set temperature or door function of the door operated switch. Use the arrow keys to select the "tSt" menu from the
"tSE" menu, then briefly press the Home key again.
The current setting "Off" will be displayed. Use the arrow keys to select the "On" setting and keep
the Home key pressed down for approximately 3 seconds. The cooling unit begins operation. The progress of the test is shown in the display as a percentage. Every second, the percentage symbol is refreshed.
28
Rittal enclosure cooling unit
7 Operation
7.4.6 Programming overview
EN
1 s
3 s
1 s
1 s
1 s
1 s
3 s
1 s
3 s
Key tSE: Temperature settings CON: Control mode
Int: Internal temperature ESt: External sensor temperature Out: Outlet temperature SP: Setpoint CF: Celsius/Fahrenheit tSt: Selftest OFF: Off On: On
Other displays: COD: Code ACC: Accepted Err: Error OK: Ok
1 s
3 s
1 s 3 s
Fig. 54: Programming overview
7.4.7 Parallel device control The IoT interface (Model No. SK 3124300, see section 13 "Accessories") supports parallel activation and deactivation of up to two cooling units. Further information can be found in the "Additional instructions" document for the IoT interface. This document is available for downloading on the Rittal website.
7.4.8 Evaluate system messages System messages appear on the display with a system code. Selected messages will additionally flash up in red. Warning messages (see tab. 7) may additionally appear in yellow if you have activated this in the Rittal Scan & Service app under "System messages". Messages can also be evaluated via a floating alarm relay on terminals 2 and 3 of the signal connector (X3). The relay output is in the de-energised state NO (Normally Open). As soon as voltage is applied to the cooling unit, the alarm relay picks up. This is the factory setting
for the cooling unit's normal operating state. As soon as a system message occurs or the power supply is interrupted, the alarm relay will drop out and open the contact. The switch logic of the alarm relay can be altered using the Rittal Scan & Service app (see section 7.5.2 "Configuration").
7.5 Rittal Scan & Service app
7.5.1 General The Rittal Scan & Service app allows you to make changes quickly and easily to the cooling unit settings via the NFC interface. Install the Rittal Scan & Service app on any suitable
mobile phone (see section 13 "Accessories"). Connect to a cooling unit via an NFC scan.
The default setting of the device PIN is 22.
Rittal enclosure cooling unit
29
7 Operation
Setpoint: 24 °C (75 °F)
EN
Note:
Alarm threshold (difference): 14 °C (25 °F)
The Rittal Scan & Service app is largely intu-
Limit temperature: 38 °C (100 °F)
itive to use, so we will only briefly consider different app zones and the required set-
Current situation:
tings below.
Temperature of air intake: 37 °C (< alarm limit)
Temperature of expelled air: 24 °C (= setpoint)
7.5.2 Configuration
The "Configuration" zone allows you to make basic settings for the cooling unit under "Device configuration", some of which can also be set directly on the display of the device itself. The additional settings are briefly outlined below.
Device name Name assigned to the cooling unit by the customer in order to differentiate between multiple devices.
Alarm threshold
If the measured temperature is higher than the setpoint plus the set temperature difference, an alarm message (overtemperature) will be output. The table below shows the range for the potential temperature difference (alarm threshold).
Parameter Internal temperature
External sensor
Outlet temperature Tab. 6: Alarm threshold
Alarm limit
Setpoint + 3 °C (5 °F)
... Setpoint + 15 °C (27 °F)
Setpoint + 12 °C (21 °F)
... Setpoint + 24 °C (40 °F)
Factory setting
Setpoint + 5 °C (9 °F)
Setpoint + 14 °C (25 °F)
Note:
In "external sensor" and "outlet temperature" control mode, the cooling unit additionally monitors the temperature of the air as it is drawn in. If the set alarm limit seems likely to be exceeded (e.g. due to a rise in heat loss), the cooling output is increased for the duration of the threatened overtemperature, and the setpoint is undercut. The "External sensor" control mode uses a fixed alarm threshold of 50 °C (122 °F).
The absolute temperature at which the "Overtemperature" alarm message is output is therefore calculated as follows: Limit temperature = Setpoint + alarm threshold Example of "outlet temperature" control mode:
If the alarm limit is exceeded: Temperature of air intake: 39 °C (> alarm limit) Temperature of expelled air: 22 °C (< setpoint)
If the alarm limit is subsequently undercut due to an increase in the cooling output: Temperature of air intake: 37 °C (< alarm limit) Temperature of expelled air: 24 °C (= setpoint)
Alarm relay > switch logic The switch logic of the relay output, i.e. whether it will be used as a normally closed or normally open contact, may be set here.
Note: The factory setting of the relay output in its connected operating state is "closed".
Assign alarm relay > System message(s) Here, you can define which system messages should switch the relay output. From the list, activate the slide bar for those messages
which you would like to switch the relay output.
Filter mat > Filter reference Here the device may be set permanently to operation with filter mats. If the device has already been set to operation with filter mats, clicking on the "New filter mat" icon allows you to reset the "Change filter mat" system message.
Note: This message is also reset automatically as soon as the device identifies an improved air throughput in the external circuit thanks to the use of a new filter mat. Assessment of the air throughput only occurs when using the compression system at constant speed, and takes a few minutes.
Filter mat > Alarm tolerance Here, the alarm tolerance may be set to one of five levels, or filter mat monitoring deactivated. If the set alarm tolerance is exceeded, the system code "A03" appears in the display. Example: Setpoint: 35 °C (95 °F) External temperature: 20 °C (68 °F)
30
Rittal enclosure cooling unit
7 Operation
If an alarm tolerance level of "medium" is selected, the 7.5.3 Technical Guide
system will tolerate an impairment to the air throughput Basic operating data as well as the current status of the EN
in the external circuit of approximately 35% before the cooling unit can be viewed in the "Technical Guide" system message "Change filter" appears in the display. zone.
Note: The more the air throughput in the external circuit is impaired, the lower the maximum cooling output and energy efficiency of the cooling unit will be.
Operating data Average energy efficiency ration (EER) for the last 24
operating hours. Minimum and maximum internal temperature of the
last 24 operating hours.
Impairment of the volumetric airflow [%] Max. cooling output [%]
The following diagram illustrates the development of cooling output depending on the air throughput in the external circuit and the alarm limit (fig. 55).
55
45
35
25
15
5 Very small
Small
Medium
Large
Filter tolerance level
Fig. 55: Sample cooling output development
65 70 75 80 85 90 95 100 Very large
Note:
If filter mat monitoring is deactivated ("Deactivate" level), it is still possible to select a filter tolerance level. If the threshold is exceeded, the system code "A21" will appear in the display instead of "A03".
If filter mat monitoring is deactivated and no filter tolerance level is selected, no system message will be output.
Optical fibre
Here, it is possible to set the colour of the optical fibre in the device's normal state. Choose between white (factory setting), pink, green and blue or deactivate the optical fibre in normal status.
Software Here, you will find information on the software version being used as well as the date of the most recent update and whether there is a current update available.
System messages While the 7-segment display only shows a system code, current system messages can be viewed here in plain language, together with troubleshooting measures and solutions, where applicable. You can also view a message history listing all messages since the device's last restart. For all messages occurring prior to the most recent restart, the number of operating hours at the time of the message is given.
7.5.4 Product informationen The "product information" zone contains basic information about your cooling unit, such as the item number, serial number etc. It also offers direct access to the available accessories.
7.5.5 Services and spare parts The "Services and spare parts" zone is a quick and easy option for ordering spare parts for your cooling unit.
7.5.6 Fast Copy The "Fast Copy" function allows you to copy the entire configuration of a cooling unit to unlimited other cooling units. This function can be found under Product Management, where all scanned items can be organised in the form of lists and retrieved.
Change the device PIN Here, you can change the default device PIN from "22" to any value between "00" and "99".
Note: To change the device PIN again, you will first need to enter the currently stored device PIN.
"Rittal Smart Service" and "IoT Interface"
In the "Configuration" zone, as well as the device configuration itself, you can also configure the connection to the Rittal Smart Service or retrieve IP information from a connected IoT interface.
Rittal enclosure cooling unit
31
7 Operation
7.6 List of system messages
EN
System
System message Optical
code
fibre
A01
Door contact
Red
A02
Interior overtem- Yellow
perature
A03
Filter warning
Yellow
A04
Exterior overtem- Yellow
perature/under-
temperature
A07
Leak
Red
A09
External fan failure Red
A10
Internal fan failure Red
A11
Compressor fault Red
A12
Condenser sensor Red
failure
A13
External tempera- Red
ture sensor failure
Tab. 7: List of system messages
Alarm relay (factory setting)
X
X X X X X
Description of the system message
The door contact switch is reporting that the enclosure door is open. Please close the enclosure door. Problem still persisting? In the Scan & Service app you will find suggestions on how to rectify the problem yourself.
The measured interior temperature exceeds the set alarm value for your cooling unit. In the Scan & Service app you will find suggestions on how to rectify the problem yourself. Alternatively, please contact the Rittal Service team.
The filter mat in your cooling unit is dirty. Please clean or replace the filter mat. Problem still persisting? In the Scan & Service app you will find suggestions on how to rectify the problem yourself. Alternatively, please contact the Rittal Service team.
Your cooling unit is being operated outside of the admissible ambient temperature range (-20 °C... +60 °C). In the Scan & Service app you will find suggestions on how to rectify the problem yourself. Alternatively, please contact the Rittal Service team.
Your cooling unit is reporting a lack of refrigerant in the active refrigerant cycle. In the Scan & Service app you will find suggestions on how to rectify the problem yourself. Alternatively, please contact the Rittal Service team. You will need to manually acknowledge this system message (see section 7.4.5 "Manually acknowledge a system message").
The fan in the external circuit of your cooling unit is defective. Please contact the Rittal Service team.
The fan in the internal circuit of your cooling unit is defective. Please contact the Rittal Service team.
The compressor in your cooling unit is reporting an error. In the Scan & Service app you will find suggestions on how to rectify the problem yourself. Alternatively, please contact the Rittal Service team
The "Condenser" sensor in your cooling unit is reporting a failure. Please contact the Rittal Service team.
The "External temperature" sensor in your cooling unit is reporting a failure. Please contact the Rittal Service team.
32
Rittal enclosure cooling unit
7 Operation
System code
A14
System message Optical fibre
Icing sensor failure Red
A16
Internal tempera- Red
ture sensor failure
A18
Electronic fault
Red
A20
Voltage
Red
A21
Condenser con- Yellow
taminated
A22
Air routing, exter- Yellow
nal circuit
A23
Air routing, internal Yellow
circuit
A24
EEV alarm
Red
A25
Internal fan alarm Red
A26
External fan alarm Red
A27
Inverter cooler
Yellow
A28
Sensor failure,
Red
suction gas tem-
perature
Tab. 7: List of system messages
Alarm relay (factory setting) X X X
X
X
X X
X
Description of the system message
EN
The "Icing" sensor in your cooling unit is reporting a failure. Please contact the Rittal Service team.
The "Internal temperature" sensor in your cooling unit is reporting a failure. Please contact the Rittal Service team.
The electronics in your cooling unit are reporting an error. In the Scan & Service app you will find suggestions on how to rectify the problem yourself. Alternatively, please contact the Rittal Service team.
You are operating your cooling unit outside of the admissible voltage ranges. In the Scan & Service app you will find suggestions on how to rectify the problem yourself. Alternatively, please contact the Rittal Service team.
The condenser in your cooling unit is dirty. In the Scan & Service app you will find suggestions on how to rectify the problem yourself. Alternatively, please contact the Rittal Service team.
The maximum pressure in the cooling circuit has been exceeded. In the Scan & Service app you will find suggestions on how to rectify the problem yourself. Alternatively, please contact the Rittal Service team.
The evaporation temperature is too low. In the Scan & Service app you will find suggestions on how to rectify the problem yourself. Alternatively, please contact the Rittal Service team.
A malfunction has been detected in the electronic expansion valve. In the Scan & Service app you will find suggestions on how to rectify the problem yourself. Alternatively, please contact the Rittal Service team.
The fan in the internal circuit of your cooling unit is running too slowly. Please contact the Rittal Service team.
The fan in the external circuit of your cooling unit is running too slowly. Please contact the Rittal Service team.
The temperature in the power electronics is too high. In the Scan & Service app you will find suggestions on how to rectify the problem yourself. Alternatively, please contact the Rittal Service team.
The "suction gas temperature" sensor in your cooling unit is reporting a failure. Please contact the Rittal Service team.
Rittal enclosure cooling unit
33
7 Operation
EN
System code
System message Optical fibre
A29
External sensor
Red
A30
Check parameters Yellow
A31
Inverter fault
Red
A32
Emergency mode Red
active
A33
Compressor
Red
phase
A34
Overload
Yellow
A35
Alarm: Active cool- Red
ing function
Tab. 7: List of system messages
Alarm relay (factory setting) X
X
X X
Description of the system message
The external sensor of your cooling unit is not connected or indicates a malfunction. Please check the connection or choose a different control mode.
The configuration parameters of the cooling unit cannot be loaded during startup. In the Scan & Service app you will find suggestions on how to rectify the problem yourself. Alternatively, please contact the Rittal Service team.
A hardware problem has been detected in the power electronics. In the Scan & Service app you will find suggestions on how to rectify the problem yourself. Alternatively, please contact the Rittal Service team.
Your cooling unit is only operating at 50% permanent cooling output due to a previous error. Please contact the Rittal Service team.
The compressor in your cooling unit is reporting an error. Please contact the Rittal Service team.
An excessive current flow has been detected in the compressor. In the Scan & Service app you will find suggestions on how to rectify the problem yourself. Alternatively, please contact the Rittal Service team.
The cooling function of your cooling unit has been interrupted due to a current or past malfunction. Check and rectify the cause or contact the Rittal Service team. In some cases, where multiple errors have occurred within a short period of time, you may need to acknowledge them manually once the cause has been rectified (see section 7.4.5 "Manually acknowledge a system message").
34
Rittal enclosure cooling unit
8 Inspection and maintenance
8 Inspection and maintenance
Any stubborn, oily stains may additionally be removed
using a non-flammable detergent, such as degreaser. EN
8.1 Safety instructions for maintenance work
The unit must be opened in order to carry out maintenance work. There is a risk of injury from electric shock. Switch off the power supply before carrying out main-
tenance work. Secure the power supply to prevent it being switched
back on accidentally. Disconnect the electrical connection cable of the cool-
ing unit from the power supply. Wait at least five minutes before handling the unit. Only
then will the capacitors built into the unit have discharged themselves. When handling the enclosure, be aware of any exposed power sources, where applicable. If possible, disconnect the entire enclosure from the power.
Caution! Never use flammable liquids for cleaning the unit.
The installed maintenance-free fans are mounted on ball bearings, protected against moisture and dust, and fitted with a temperature monitor. Rittal recommends that the cooling unit fans should be
checked e.g. for unusual running noises after around 40,000 operating hours.
8.4 Compressed air cleaning
8.4.1 Removing an internally mounted unit Cooling units which are internally mounted in the enclosure must first be completely removed from the mounting cut-out prior to cleaning with compressed air.
There is also a risk of injury from sharp edges, such as the louvres of the heat exchanger. Wear cut-resistant gloves for all maintenance work. After removing the cover, there is a risk of burn injuries from hot surfaces on the components inside the unit. Before carrying out any work on the interior of the unit,
allow it to cool down for at least ten minutes.
8.2 Notes on the refrigerant circuit
The cooling unit is filled with the amount of refrigerant required at the factory, checked for leaks, and subjected to a functional test run. The refrigerant circuit is designed in the form of a maintenance-free, hermetically sealed system. For this reason, the operator should not carry out any maintenance work on the refrigerant circuit.
Caution! Maintenance tasks on the refrigerant circuit must only be undertaken by a qualified refrigeration specialist.
Note: A second person will need to assist when dismantling the unit.
Disconnect all connectors at the rear of the device. Where applicable, also disconnect the locator clip(s)
from the device if you have used them for cable routing. The cables will then remain in the enclosure (with the cable routing). Remove the louvred grille as described in section 5.3.5 "Internal mounting of the cooling unit".
Note: Please note that when removing the louvred grille, contrary to the illustrations shown in section 5.3.5 "Internal mounting of the cooling unit", the cooling unit is fitted on an enclosure door or side panel.
8.3 Maintenance work on the cooling unit
If there is visible dirt present, the components in the outer air circuit should be cleaned using a vacuum cleaner or compressed air.
Note: The maintenance intervals given below depend to a large extent on the level of contamination in the ambient air. For heavily contaminated air, the maintenance intervals will be reduced accordingly.
With a second person assisting you, take steps to secure the device from the outside to prevent it from accidentally falling out of the mounting cut-out.
First release and remove the two corner brackets with nuts from the grub screws at the bottom, followed by the top.
Clean the outer surface and louvred grille of the cooling unit and the components of the unit's external circuit at least every 5,000 to 8,000 operating hours, as described in section 8.4 "Compressed air cleaning".
Rittal enclosure cooling unit
35
8 Inspection and maintenance
EN
Fig. 56: Unscrew and remove the corner brackets at the top and bottom
Caution! Remove spring clips only with suitable tools (e. g. needle-nose pliers). Half-way up, remove one spring clip from the front of the cooling unit on both the left and right.
Set the device down safely in a suitable place. Next, remove the device's cover as described in sec-
tion 8.4.3 "Removing the cover".
8.4.2 Removing an externally mounted unit Where cooling units are externally mounted on the enclosure, only the louvred grille must be removed initially prior to cleaning with compressed air. The rear panel including all components can remain in the mounting cutout. Remove the louvred grille as described in sec-
tion 5.3.5 "Internal mounting of the cooling unit".
Note: Please note that when removing the louvred grille, contrary to the illustrations shown in section 5.3.5 "Internal mounting of the cooling unit", the cooling unit is fitted on an enclosure door or side panel.
Next, remove the device's cover as described in section 8.4.3 "Removing the cover".
8.4.3 Removing the cover
Caution! After removing the cover, there is a risk of burn injuries from hot component surfaces inside the unit.
Caution!
The cooling unit is only stable while the hood and rear wall are joined together. It is therefore particularly important to secure the rear panel to prevent it from falling before you remove the hood.
Fig. 57: Remove the spring clips
Hold the cooling unit as straight as possible when removing it from the mounting cut-out.
Allow the unit to cool down for at least ten minutes before removing the cover.
This should allow hot surfaces inside the unit to cool down sufficiently. For SK 317880x, SK 317980x and SK 3180800: Loosen the eight screws connecting the cover to the rear panel.
Fig. 58: Remove the cooling unit from the mounting cut-out 36
Rittal enclosure cooling unit
8 Inspection and maintenance
EN
Fig. 59: Loosen the assembly screws (for SK 317880x, SK 317980x and SK 3180800)
For SK 31848x0: Loosen the ten screws connecting the cover to the rear panel.
Fig. 61: PE conductor connection (sample illustration)
Disconnect the PE conductor's flat-pin connector from the inside, preferably on the cover.
Remove the cover completely from the rear panel, and set or lay it down in a safe place.
Fig. 60: Loosen the assembly screws (for SK 31848x0)
Gently pull the cover forwards (approx. 5 cm) away from the rear panel. The PE conductor connection between the cover and the rear panel is located at the bottom left.
Fig. 62: Remove the cover
Dismantling of the cover is now complete, providing access to all components in the external circuit.
8.4.4 Cleaning the components with compressed air
After removing the cover from the unit, you will be able to access the components in the outer circuit, particularly the condenser, the condenser fan and the compressor chamber. Wear cut-resistant gloves when cleaning with com-
pressed air, so as to avoid injuries caused by sharp edges inside the unit. When cleaning the components with compressed air, blow dirt sideways out of the cooling unit. Alternatively, use a suitable vacuum cleaner to clean all components.
Rittal enclosure cooling unit
37
8 Inspection and maintenance
8.4.5 Re-assembling the cooling unit
EN Once the cleaning work is complete, the cooling unit
must be sealed and, if externally mounted, fitted back into the mounting cut-out. First, replace cover onto the rear panel.
It is assembled in the reverse order from dismantling (see section 8.4.3 "Removing the cover"). Before fully replacing the cover, make sure that the PE conductor is correctly connected to the flat-pin connector on the cover (fig. 61). Furthermore, make sure that the PE conductor is not squashed or damaged when replacing the cover.
Warning! If the PE conductor is not connected or has been incorrectly connected, there is a danger to life from electric shock.
During installation, please observe the following torques for the cover assembly screws: 2 screws on the compressor console (at the bottom of the unit): 3 Nm Remaining 6 / 8 screws: 2 Nm
For externally mounted units, re-fit the cooling unit into the mounting cut-out (see section 5.3.4 "External mounting of the cooling unit").
For internally mounted units, re-fit the louvred grille onto the cooling unit (see section 5.3.5 "Internal mounting of the cooling unit").
Make the electrical connection for the cooling unit.
38
Rittal enclosure cooling unit
9 Storage and disposal
Note: When storing the cooling unit, please observe the temperature range given in the technical specifications.
Store the cooling unit in the appropriate position for transport.
The closed refrigerant circuit contains refrigerant and oil which must be properly disposed of for the sake of the environment. Facilities for disposal are available at the Rittal plant or a specialist company. Give us a call (see section 14 "Customer service addresses").
9 Storage and disposal
EN
Rittal enclosure cooling unit
39
10 Technical specifications
10 Technical specifications EN
Note: The "Rated input current of the inverter" refers to the maximum current the installed inverter can draw under laboratory conditions. This value is required from the UL approval and is not relevant in practice for installation and operation.
Pos. Technical specifications
SK 3178800 SK 3178801 SK 3179800 SK 3179801
General specifications
Model No.
SK 3178800 SK 3178801 SK 3179800 SK 3179801
Dimensions (W x H x D) [mm]
300 x 570 x 159
300 x 570 x 199
Cooling output and efficiency ratings
L35 L20
0.46
0.46
0.69
0.69
7 Total cooling output Pc [kW]
L35 L35
0.30
0.30
0.52
0.52
L35 L50
0.22
0.22
0.32
0.32
L35 L20
0.46
0.46
0.69
0.69
Sensible cooling capacity Ps [kW]
L35 L35
0.30
0.30
0.52
0.52
L35 L50
0.22
0.22
0.32
0.32
L35 L20
0.14
0.13
0.23
0.21
Power consumption Pel [kW]
L35 L35
0.17
0.15
0.27
0.26
L35 L50
0.20
0.18
0.32
0.31
10
L35 L20
3.18
3.60
3.04
3.28
9 Energy efficiency ratio (EER)
L35 L35
1.80
2.01
1.90
2.03
L35 L50
1.12
1.22
1.00
1.06
Electrical specifications
1 Rated voltage [V, ~], tolerance
+10%/-10%
110...240, 1
2 Rated frequency [Hz]
50/60
Rated insulation voltage Ui [V]
240
Rated impulse withstand voltage Uimp [V]
4000
3 Rated power input [kW]
0.22
0.36
4 Rating of over current protective device [A]
15
5 Minimum circuit ampacity [A]
15
6 Rated input current of the inverter [A]
6.56
Pre-fuse T [A]
EN 61439
16
UL 508A
15
Pre-fuse type
CCMR
Tab. 8: Technical specifications Blue e+ SK 3178800, SK 3178801, SK 3179800, SK 3179801
40
Rittal enclosure cooling unit
10 Technical specifications
Pos. Technical specifications
SK 3178800 SK 3178801 SK 3179800 SK 3179801
SK 3235600: miniature circuit-breaker 5SY4116-8 (IEC)
Alternatively one of the following pre-fuses
SK 3235610: circuit-breaker 3RV2021-4AA10-0RT0 (IEC) (SCCR = 55 kA)
SK 3235620: circuit-breaker 3RV2711-4AD10-0RT0 (UL and CSA) (SCCR = 65kA)
8 SCCR [kA]
5
Cable cross-section [mm²]
EN 61439 UL 508A
1.5 2.1 or 14 AWG
Overvoltage category
III
Level of contamination
III
Protection category of cooling unit
18 IP Rating
24
Protection category with the unit externally mounted
19 IP Rating
55
20 UL Type rating
3R, 12
Electromagnetic compatibility
Immunity to interference
For industrial areas to EN 61000-6-2
Emitted interference
For residential, business and commercial areas and small companies to EN 61000-6-3
Technical specifications for a suitable overvoltage protection module
Terminal voltage Uc [V, Hz]
350...400, 50/60
Maximum current Imax [kA]
40
Rated current In [kA]
20
Breakdown voltage Up [kV]
1.75
Refrigerant circuit
17 Admissible pressure (PS) HD/ND [MPa]
3.2 / 1.9
3.2 / 2.0
11 Operating temperature range [°C/°F]
-20...+60/-4...140
Heat pipe active mode [°C/°F]
-20...+45/-4...113
Refrigerant cycle active mode [°C/°F]
+3...+60/37...140
Internal temp.
+20...+50/68...122
Setting range set value [°C/°F]
External sensor
+20...+50/68...122
Outlet temp.
+18...+28/64...82
14 Refrigerant identification
R513A (44% R134a Tetrafluorethane (CH2FCF3), 56% R1234yf Tetrafluorpropene (C3H2F4))
Tab. 8: Technical specifications Blue e+ SK 3178800, SK 3178801, SK 3179800, SK 3179801
EN
Rittal enclosure cooling unit
41
10 Technical specifications
EN
Pos. Technical specifications
SK 3178800 SK 3178801 SK 3179800 SK 3179801
12 Refrigerant filling mass compression system [g]
75
75
90
90
13 Refrigerant filling mass heat pipe system [g]
50
50
70
70
15 GWP
631
16 CO2e [t]
0.08
0.08
0.10
0.10
Other
Weight [kg]
12.2
12.0
13.0
12.8
Storage temperature range [°C/°F]
-40...+70/-40...158
Maximum operating altitude above sea level (NN) [m]
3500
Noise pressure level Lp: Maximum value [dB(A)]
67
66
Noise pressure level Lp: 100% cooling output [dB(A)]
L35/L35
62
63
Noise pressure level Lp: 75% cooling output [dB(A)]
L35/L35
56
55
Noise pressure level Lp: 50% cooling output [dB(A)]
L35/L35
50
51
Humidity [%]
5...95, non-condensing
35 Manufacture date
DD.MM.YY
Approvals
See product page on the Rittal website
Tab. 8: Technical specifications Blue e+ SK 3178800, SK 3178801, SK 3179800, SK 3179801
Pos. Technical specifications
SK 3180800
SK 3184800
SK 3184840
General specifications
Model No.
SK 3180800
SK 3184800
SK 3184840
Dimensions (W x H x D) [mm]
300 x 570 x 250
400 x 950 x 196
Cooling output and efficiency ratings
L35 L20
1.07
1.30
1.30
7 Total cooling output Pc [kW]
L35 L35
0.78
1.00
1.00
L35 L50
0.44
0.60
0.60
L35 L20
1.07
1.30
1.30
Sensible cooling capacity Ps [kW]
L35 L35
0.78
1.00
1.00
L35 L50
0.44
0.60
0.60
L35 L20
0.35
0.36
0.37
Power consumption Pel [kW]
L35 L35
0.41
0.42
0.42
L35 L50
0.49
0.48
0.49
10
L35 L20
3.01
3.72
3.46
9 Energy efficiency ratio (EER)
L35 L35
1.90
2.40
2.37
L35 L50
0.91
1.25
1.19
Electrical specifications
1 Rated voltage [V, ~], tolerance
+10%/-10%
110...240, 1
380...480, 2
2 Rated frequency [Hz]
50/60
Tab. 9: Technical specifications Blue e+ SK 3180800, SK 3184800, SK 3184840
42
Rittal enclosure cooling unit
10 Technical specifications
Pos. Technical specifications
SK 3180800
SK 3184800
SK 3184840
Rated insulation voltage Ui [V]
240
480
Rated impulse withstand voltage Uimp [V]
4000
3 Rated power input [kW]
0.56
0.60
0.59
4 Rating of over current protective device [A]
15
5 Minimum circuit ampacity [A]
15
6 Rated input current of the inverter [A]
6.6
7.4
2.67
Pre-fuse T [A]
EN 61439
16
UL 508A
15
Pre-fuse type
CCMR
SK 3235600: miniature circuit-breaker 5SY4116-8 (IEC)
Alternatively one of the following pre-fuses
SK 3235610: circuit-breaker 3RV2021-4AA10-0RT0 (IEC) (SCCR = 55 kA)
SK 3235620: circuit-breaker 3RV2711-4AD10-0RT0 (UL and CSA) (SCCR = 65kA)
8 SCCR [kA]
5
Cable cross-section [mm²]
EN 61439 UL 508A
1.5 2.1 or 14 AWG
Overvoltage category
III
Level of contamination
III
Protection category of cooling unit
18 IP Rating
24
Protection category with the unit externally mounted
19 IP Rating
55
20 UL Type rating
3R, 12
Electromagnetic compatibility
Immunity to interference
For industrial areas to EN 61000-6-2
Emitted interference
For residential, business and commercial areas and small companies to EN 61000-6-3
Technical specifications for a suitable overvoltage protection module
Terminal voltage Uc [V, Hz]
350...400, 50/60
Maximum current Imax [kA]
40
Rated current In [kA]
20
Breakdown voltage Up [kV]
1.75
Refrigerant circuit
17 Admissible pressure (PS) HD/ND [MPa]
3.5 / 2.0
3.4 / 2.1
11 Operating temperature range [°C/°F]
-20...+60/-4...+140
Heat pipe active mode [°C/°F]
-20...+45/-4...+113
Refrigerant cycle active mode [°C/°F]
+3...+60/+37...+140
Tab. 9: Technical specifications Blue e+ SK 3180800, SK 3184800, SK 3184840
EN
Rittal enclosure cooling unit
43
10 Technical specifications
EN
Pos. Technical specifications
SK 3180800
SK 3184800
SK 3184840
Internal temp.
+20...+50/+68...+122
Setting range set value [°C/°F]
External sensor
+20...+50/+68...+122
Outlet temp.
+18...+28/+64...+82
14 Refrigerant identification
R513A (44% R134a Tetrafluorethane (CH2FCF3), 56% R1234yf Tetrafluorpropene (C3H2F4))
12 Refrigerant filling mass compression system [g]
110
200
13 Refrigerant filling mass heat pipe system [g]
80
110
15 GWP
631
16 CO2e [t]
0.12
0.20
Other
Weight [kg]
15.3
26.2
26.6
Storage temperature range [°C/°F]
-40...+70/-40...+158
Maximum operating altitude above sea level (NN) [m]
3500
Noise pressure level Lp: Maximum value [dB(A)]
69
72
Noise pressure level Lp: 100% cooling output [dB(A)]
L35/L35
68
68
Noise pressure level Lp: 75% cooling output [dB(A)]
L35/L35
64
60
Noise pressure level Lp: 50% cooling output [dB(A)]
L35/L35
57
56
Humidity [%]
5...95, non-condensing
35 Manufacture date
DD.MM.YY
Approvals
See product page on the Rittal website
Tab. 9: Technical specifications Blue e+ SK 3180800, SK 3184800, SK 3184840
Rev.
e+
e+
RITTAL GmbH & Co. KG, Auf dem Stuetzelberg, 35745 Herborn RITTAL Limited, Braithwell Way, Hellaby Rotherham, S66 8QY, UK
44
Rittal enclosure cooling unit
11 List of spare parts
You can find spare parts on the relevant Rittal website under the relevant Model No.
11 List of spare parts
EN
Note: The components used are Rittal-specific components. We recommend using only original Rittal spare parts to ensure the guaranteed unit properties (output).
70 40
10
100
25
21
20
6
41
76
75 45
5 6
1
110
90
15
55
Fig. 63: Spare parts (SK 3178800, SK 3178801, SK 3179800, SK 3179801, SK 3180800, SK 3180800)
Key 1 Compressor 5 Condenser fan 6 Sealing ring 10 Evaporator coil fan 15 Accessories bag 20 Expansion valve 21 Coil for expansion valve 25 Filter dryer 40 Control module 41 Inverter 45 Louvred grille 55 Display 70 Cable set, temperature sensor including display cable 75 Cover 76 Rear panel 90 Evaporator
100 Condenser 110 Condensate water evaporator
Rittal enclosure cooling unit
45
11 List of spare parts
EN
70
75 45
40
10
20 25
41
6
21
100
76
5 6
1
90
110
15
55
46
Fig. 64: Spare parts (SK 3184800, SK 3184840)
Key 1 Compressor 5 Condenser fan 6 Sealing ring 10 Evaporator coil fan 15 Accessories bag 20 Expansion valve 21 Coil for expansion valve 25 Filter dryer 40 Control module 41 Inverter 45 Louvred grille, top 46 Louvred grille, bottom 55 Display 70 Cable set, temperature sensor including display cable 75 Cover 76 Rear panel 90 Evaporator 100 Condenser 110 Condensate water evaporator
46
Rittal enclosure cooling unit
12 Drawings
12 Drawings EN
12.1 Representation of mounting cut-outs
SK 3178800, SK 3178801, SK 3179800, SK 3179801,
SK 3180800
SK 3184800, SK 3184840
383±1
280±1
550±1 929±1
Fig. 65: Mounting cut-out
Fig. 66: Mounting cut-out
Rittal enclosure cooling unit
47
12 Drawings
12.2 External and internal mounting dimensions (SK 317880x width 300 mm)
EN
126
159
33
570 570
Fig. 67: Dimensions 48
Rittal enclosure cooling unit
12 Drawings
12.3 External and internal mounting dimensions (SK 317980x width 300 mm)
EN
166
199
33
570 570
Fig. 68: Dimensions
Rittal enclosure cooling unit
49
12 Drawings
12.4 External and internal mounting dimensions (SK 3180800 width 300 mm)
EN
217
250
33
570 570
Fig. 69: Dimensions 50
Rittal enclosure cooling unit
12 Drawings
12.5 External and internal mounting dimensions (SK 31848x0 width 400 mm)
EN
160
196
36
950 950
Fig. 70: Dimensions
Rittal enclosure cooling unit
51
13 Accessories
13 Accessories EN As well as the accessories listed below, details of our full
range of accessories can be found on the Rittal website.
Item
External temperature sensor Condensate water hose Filter mats Metal filter Door limit switch IoT Interface
SK 317880x SK 317980x SK 3180800
SK 3184800 SK 3184840
SK 3124400
SK 3301612
SK 3285850 SK 3285950 SK 3285860 SK 3285660
SZ 4127010 SK 3124300
Item
SK 317880x SK 317980x SK 3180800 SK 3184800
SK 3184840
SK 3235600
Pre-fuse
SK 3235610
SK 3235620
Tab. 10: List of accessories
Download Rittal Scan & Service app
Tab. 11: Download Rittal Scan & Service app
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Rittal enclosure cooling unit
14 Customer service addresses
14 Customer service addresses
Austria
Headquarters Germany
Phone: +43 (0) 599 40 -0
EN
RITTAL GmbH & Co. KG
E-mail: service@rittal.at
Auf dem Stuetzelberg 35745 Herborn Germany Phone: +49(0)2772 505-1855
Belarus Please contact Lithuania. E-mail: service@rittal.lt
Fax: +49(0)2772 505-1850 E-mail: service@rittal.de
Belgium Phone: +32 (9) 353 91 45
Service HUB USA
E-mail: service@rittal.be
RITTAL LLC 801 State Route 55 Dock 25 Urbana, OH 43078 Phone: +1 800 477 4000, option 3 E-mail: rittal@rittal.us
Bosnia-Herzegovina Please contact the headquarters in Germany. Phone: +49 (0) 2772 505 1855 E-mail: service@rittal.de
Service HUB China RITTAL Electro-Mechanical Technology Co. Ltd. No. 1658, Minyi Road Songjiang District Shanghai, 201612 Phone: +86 21 5115 7799-213 Fax: +86 21 5115 7788 E-mail: service@rittal.cn
Service HUB India RITTAL Private Limited Nos. 23 & 24, KIADB Industrial Area Veerapura Doddaballapur-561 203 Bengaluru District Phone: +91 (80) 22890792 Fax: +91 (80) 7623 343 E-mail: service@rittal-india.com
For technical queries, please contact: Phone: +49(0)2772 505-9052 E-mail: info@rittal.com Homepage: www.rittal.com
Brazil Phone: +55 (11) 3622 2377 E-mail: service@rittal.com.br
Bulgaria Phone: +359 (2) 8890055 E-mail: service@rittal.bg
Canada Phone: +1 (905) 877 COOL 292 E-mail: service@rittal.ca
Chile Phone: +56 2 9477 400 E-mail: info@rittal.cl
China Phone: +86 800 820 0866 E-mail: service@rittal.cn
Columbia Phone: +571 621 8200 E-mail: service@rittal.com.co
For complaints or service requests, please contact your local Rittal organisation.
Argentina Phone: +54 (11) 4760 6660 E-mail: service@rittal.com.ar
Australia Phone: +61 (2) 95 25 27 66 E-mail: service@rittal.com.au
Costa Rica Please contact Mexico. E-mail: servicemx@rittal.com.mx
Croatia Phone: +385 1 3455 256 E-mail: service@rittal.hr
Cyprus Please contact the headquarters in Germany. E-mail: service@rittal.de
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14 Customer service addresses
Czech Republic
EN Phone: +420 234 099 063
E-mail: servis@rittal.cz
Hungary Phone: +36 1 399 800 E-mail: rittal@rittal.hu
Denmark Phone: +45 70 25 59 20 E-mail: info@rittal.dk
Iceland Please contact the headquarters in Germany. E-mail: srj@sminor.is
Dubai Phone: +971 3416855 206 E-mail: service@rittal-middle-east.com
India Phone: +91 (80) 33720783 E-mail: service@rittal-india.com
Ecuador Please contact Peru. E-mail: info@rittal.pe
Indonesia Please contact Singapore. E-mail: service@rittal.com.sg
El Salvador Please contact Mexico. E-mail: servicemx@rittal.com.mx
Iran Please contact Dubai. E-mail: service@rittal-middle-east.com
Estonia Please contact Lithuania. E-mail: service@rittal.lt
Ireland Phone: +353 (59) 9 18 21 00 E-mail: sales@rittal.ie
Finland Phone: +358 9 413 444 50 E-mail: service@rittal.fi
Israel Phone: +972 (4) 6275505 E-mail: service@rittal.co.il
France Phone: +33 472231275 E-mail: service@rittal.fr
Italy Phone: +39 (02) 95 930 308 E-mail: service@rittal.it
Germany Phone: +49(0)2772 505-1855 E-mail: service@rittal.de
Japan Phone: 0120-998-631 (Japan only) E-mail: service@rittal.co.jp
Greece Phone: +30 210 271 79756 E-mail: service@rittal.gr
Jordan Please contact Dubai. E-mail: service@rittal-middle-east.com
Guatemala Please contact Mexico. E-mail: servicemx@rittal.com.mx
Kazakhstan Please contact Lithuania. E-mail: service@rittal.lt
Honduras Please contact Mexico. E-mail: servicemx@rittal.com.mx
Latvia Please contact Lithuania. E-mail: service@rittal.lt
Hong Kong Please contact China. E-mail: marvis.lun@rittal.com
Lebanon Please contact Dubai. E-mail: service@rittal-middle-east.com
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Rittal enclosure cooling unit
Lithuania Phone: +37 (0) 52105738 E-mail: service@rittal.lt
Luxembourg Please contact the headquarters in Germany. E-mail: services@dme.lu
Morocco Please contact the headquarters in Germany. E-mail: service@rittal.ma
Malaysia Please contact Singapore. E-mail: service@rittal.com.sg
Macedonia Please contact Austria. E-mail: siskon@mt.net.mk
Mexico Phone: +52 (55) 59 5369 E-mail: servicemx@rittal.com.mx
Netherlands Phone: +31 (316) 59 1692 E-mail: service@rittal.nl
New Zealand Please contact Australia. E-mail: service@rittal.com.au
Norway Phone: +47 64 85 13 00 E-mail: service@rittal.no
Oman Please contact Dubai. E-mail: service@rittal-middle-east.com
Pakistan Please contact Dubai. E-mail: service@rittal-middle-east.com
Peru Phone: +51 1 2432525 E-mail: info@rittal.pe
Philippines Please contact Singapore. E-mail: service@rittal.com.sg
14 Customer service addresses
Poland
Phone: +48 (22) 724 2784
EN
E-mail: service@rittal.pl
Portugal Phone: +351 256780210 E-mail: service@rittal.pt
Qatar Please contact Dubai. E-mail: service@rittal-middle-east.com
Romania Phone: +40 351 76 47 E-mail: service@rittal.ro
Saudi Arabia Please contact Dubai. E-mail: service@rittal-middle-east.com
Serbia Please contact the headquarters in Germany. E-mail: sloba@vesimpex.co.yu
Singapore Phone: +65 6309 7327 E-mail: service@rittal.com.sg
Slovak Republic Phone: +421 2 5363 0651 E-mail: service@rittal.sk
Slovenia Phone: +386 1 5466370 E-mail: service@rittal.si
Spain Phone: +34 902 504 678 E-mail: service@rittal.es
South Africa Phone: +27 (11) 609 82 94 E-mail: service@rittal.co.za
South Korea Phone: +82 2 577 6525 114 E-mail: service@rittal.co.kr
Sweden Phone: +46 (431) 442600 E-mail: service@rittal.se
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14 Customer service addresses
Switzerland
EN Phone: +41 56 416 0690
E-mail: service@rittal.ch
Taiwan Phone: +886 (3) 3971745 18 E-mail: sales.info@rittal.com.tw
Thailand Phone: +66 (2) 369 2896 99 13 E-mail: service@rittal.co.th
Turkey Phone: +90 (216) 383 74 44 E-mail: servis@rittal.com.tr
Turkmenistan Please contact Lithuania. E-mail: service@rittal.lt
UK Phone: +44 8448 006 007 E-mail: service.desk@rittal.co.uk
Ukraine Phone: +38 (44) 536 9944 E-mail: service@rittal.com.ua
USA Phone: +1 800-477-4000, option 3 E-mail: rittal@rittal.us
Uzbekistan Please contact Lithuania. E-mail: service@rittal.lt
Venezuela Please contact Brazil. E-mail: service@rittal.com.br
Vietnam Please contact Singapore. E-mail: service@rittal.com.sg
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Rittal enclosure cooling unit
15 Compact service information
15 Compact service information EN
Step
See
OK/comment
Assembly and connection
Installation site requirements taken into account
Section 5.2
Assembly instructions
Observe the relevant assembly instructions Section 5.3.1
Condensate water discharge connected
Section 5.3.6
Electrical installation (overvoltage protection, Section 5.4 door limit switch)
Commissioning
Check the assembly All attachments checked, filter mat fitted
Commissioning At least 30 minutes after assembly
Section 6
Download the Rittal Scan & Service app to support commissioning and subsequent operation
Commissioning check carried out via Rittal Scan & Service app
Operation
Check the device status during operation using the Rittal Scan & Service app
Read maintenance instructions and warnings or fault messages using the Rittal Scan & Service app
Tab. 12: Quick installation check
For all other service enquiries:
Original spare parts
Maintenance, warranty extensions (up to 5 years), service contracts
Enquire directly via Rittal Scan & Service app http://www.rittal.com
Enquire directly via Rittal Scan & Service app http://www.rittal.com Enquire at the relevant national company http://www.rittal.com/de_de/service_contact/index.asp
Other service contacts worldwide: Rittal International Service HUBs (see section 14 "Customer service addresses")
Tab. 13: Service contacts worldwide
Rittal enclosure cooling unit
57
Notes
58
Rittal enclosure cooling unit
Notes
Rittal enclosure cooling unit
59
Enclosures Power Distribution Climate Control IT Infrastructure Software & Services
You can find the contact details of all Rittal companies throughout the world here.
www.rittal.com/contact RITTAL GmbH & Co. KG Auf dem Stuetzelberg · 35745 Herborn · Germany Phone +49 2772 505-0 E-mail: info@rittal.de · www.rittal.com
03.2023 / D-0000-00002693-03-EN
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