Rittal – The System.

Roof-mounted fan

Assembly and installation instructions

Model Numbers: SK 3138000, SK 3139100, SK 3139110, SK 3140100, SK 3140110, SK 3140140, SK 3140500, SK 3140510

Contents

1. Safety instructions
   1. Safety instructions
   2. Intended use
2. Product description
   1. Components
   2. Scope of supply
   3. Function
      1. General
      2. Safety devices
      3. Filter mats
3. Mounting
   1. Choosing the installation site
   2. Notes on installation
      1. General
      2. Layout of the electronic components in the enclosure
      3. General
   3. Installing the roof-mounted fan
      1. Installation IP 21
      2. Additional installation steps: Installation from outside IP 54/UL Type 12
      3. Additional installation steps: Installation from inside IP 54/UL Type 12
      4. Additional installation steps: Enhanced protection category IP 55/UL Type 12
      5. Additional installation steps: Protection category IP 21/UL Type 1 and higher air throughput
4. Electrical connection
   1. Connecting the power supply
      1. Notes on electrical installation
      2. Connection data
      3. Overvoltage protection and supply line load
      4. PE conductor connection
      5. Installing the power supply
   2. Installing the pilot wire
5. Commissioning
6. Inspection and maintenance
7. Storage and disposal
8. Technical specifications
9. Accessories
10. Warranty
11. Customer services addresses

1. Safety instructions

1.1 Safety instructions

Assembly, installation and servicing may only be performed by properly trained specialists.

Do not obstruct the air inlet and air outlet of the roof-mounted fan inside and outside the enclosure.

The specific air throughput of the roof-mounted fans must be adequate to meet the climate control requirements of the enclosure.

Use only original spare parts and accessories.

Do not make any changes to the roof-mounted fan other than those described in these and other applicable instructions.

The roof-mounted fan must only be connected to the mains with the system de-energised. Connect the prefuse specified in the Technical Specifications.

Never insert your fingers into the rotating fan blade.

The roof-mounted fan must only be fitted on a sealed enclosure with protected access to the electrical connection.

Electrical connection and any repairs may only be carried out by authorised, specialist personnel.

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.

Spending long periods in the airflow may irritate the eyes and muscles.

If extinguisher gas is used in the enclosure, the roof-mounted fan must be incorporated into the fire protection concept.

1.2 Intended use

Rittal roof-mounted fans were developed and designed in accordance with the state of the art and the recognised rules governing technical safety. Nevertheless, if used improperly, they may pose a threat to life and limb or cause damage to property. The unit is only intended for ventilating enclosures and electronic cases. Any other use is deemed improper. The manufacturer will not be liable for any damages caused as a result of improper use, or for incorrect assembly, installation or use. All risk is borne solely by the user.

Proper usage also includes the observation of all valid documents and compliance with the inspection and servicing conditions.

2. Product description

2.1 Components

Key:

• 1: Cover
• 2: Fan plate with fan
• 3: Inflow nozzle for air routing
• 4: Base tray with pleated filter
• 5: Electrical connector

Fig. 1: Components

2.2 Scope of supply

Tab. 1: Scope of supply

2.3 Function

2.3.1 General

The roof-mounted fan, in conjunction with the corresponding inlet filter(s), is used to dissipate heat loss from enclosures and ventilate the enclosure, thereby protecting temperature-sensitive components.

This is achieved via the direct infeed of ambient air, the temperature of which must be lower than the admissible enclosure interior temperature.

The ambient air enters the enclosure via an air inlet grille in the lower section and is drawn upwards through the enclosure by the roof-mounted fan. The warmed air is then returned to the outside via the fan. It is not possible to change the air flow direction.

2.3.2 Safety devices

The fan is equipped with a thermal winding protection for protection against overload.

2.3.3 Filter mats

The roof-mounted fan is supplied with four pleated filters (class ePM10 50% to ISO 16890) pre-installed. The filter must be checked regularly depending on the level of dust exposure, and replaced as necessary.

3. Mounting

3.1 Choosing the installation site

When choosing the installation site for the enclosure, please observe the following:

• The site for the enclosure, and hence the position of the roof-mounted fan, must be carefully selected so as to ensure good ventilation.
• The site must be free from excessive dirt and moisture.
• Roof-mounted fans must always be installed on horizontal panels (roof).
• The ambient temperature must be lower than the admissible enclosure interior temperature.
• The mains connection data as stated on the rating plate of the unit must be guaranteed.

3.2 Notes on installation

3.2.1 General

Check the packaging carefully for signs of damage. Any packaging damage may be the cause of a subsequent functional failure.

Note: The inlet filter must ensure an adequate air exchange.

• The enclosure must be sealed on all sides (IP 54). If the enclosure has a leak, unfiltered, contaminated air may enter the enclosure.
• The fan motor is a rotating component that may transfer vibrations and oscillations. Appropriate measures to decouple vibration must be taken in advance by the company responsible for the overall plant or system.
• During transportation, the roof-mounted fan must be secured in accordance with section 3.3.2 or section 3.3.3 to prevent damage.

3.2.2 Layout of the electronic components in the enclosure

Take note of the air flows from the internal fans of installed electronic components.

When installing the roof-mounted fan, it is important to ensure that the airflows of fans and built-in electronic components do not adversely influence one another (air short-circuit).

The corresponding minimum distances between the fan and component must be observed in order to ensure unhindered air circulation.

3.2.3 General

Carefully deburr the cut-out to prevent injuries caused by sharp edges.

The position of the roof-mounted fan in the mounting cut-out is freely selectable. It should be based on the position of the electrical connection inside the enclosure.

No filter mats are needed in order to achieve protection category IP 21.

Check that the clips are completely snapped into place to ensure that the roof-mounted fan is securely held in the mounting cut-out.

The filter mats may be removed to achieve a higher air throughput. In this case, the protection category will be reduced to IP 21 and UL Type 1.

Use only original Rittal filters which bear the Rittal logo to be sure of the protection category, air throughput and approvals.

The protection category of the roof-mounted fan can be raised to IP 55. To this end, the pleated filters must be replaced with Rittal filter mats SK 3174100. The side with the Rittal logo must face towards the fan (see section 3.3.4).

Note: This reduces the air throughput. For details, please refer to the performance diagrams which can be found on the Rittal website.

You should inspect the filter regularly depending on the amount of dust. Recommended: Replace after 2,000 operating hours at the latest, and as and when necessary.

The orientation of the cover on the base tray is freely selectable.

3.3 Installing the roof-mounted fan

3.3.1 Installation IP 21

[Diagram showing installation steps for IP 21]

3.3.2 Additional installation steps: Installation from outside IP 54/UL Type 12

[Diagrams showing installation steps for IP 54/UL Type 12]

3.3.3 Additional installation steps: Installation from inside IP 54/UL Type 12

[Diagram showing installation steps for IP 54/UL Type 12 from inside]

3.3.4 Additional installation steps: Enhanced protection category IP 55/UL Type 12

[Diagrams showing installation steps for IP 55/UL Type 12]

3.3.5 Additional installation steps: Protection category IP 21/UL Type 1 and higher air throughput

[Diagrams showing installation steps for IP 21/UL Type 1 with higher air throughput]

4. Electrical connection

4.1 Connecting the power supply

4.1.1 Notes on electrical installation

When performing the electrical installation, it is important to observe all valid national and regional regulations as well as the provisions of the responsible electrical supply company.

The electrical installation must only be carried out by a qualified electrician who is responsible for compliance with the existing standards and regulations.

4.1.2 Connection data

The connected voltage and frequency must correspond to the values stated on the rating plate.

The electrical installation and any repairs may only be carried out by authorised specialist personnel.

Use only original spare parts!

Install the pre-fuse cited in the Technical Specifications (circuit-breaker or slow fuse) to protect from short-circuits.

If several fans are operated on a single pre-fuse, observe the total connected load.

The roof-mounted fan must be connected to the mains via an all-pole disconnecting device to overvoltage category III (IEC 61058-1).

4.1.3 Overvoltage protection and supply line load

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. The mains voltage must not exceed a tolerance of ±10%.

4.1.4 PE conductor connection

The PE conductor must be connected to the PE conductor system of the overall system.

4.1.5 Installing the power supply

Remove the mains connector from the packaging and connect to the mains as shown in the connection diagram.

The connection terminal supplied allows the connection of cable cross-sections of 0.5 to 4 mm².

A smaller pilot wire (section 4.2) may be selected (min. 0.34 mm²).

In accordance with NFPA 70 (NEC), only copper conductors must be used to connect the supply cable to the mains connector.

If no wire end ferrules are used, strip the individual wires by max. 9 mm (observe the applicable clearances and creepage distances).

Connect the connector to the roof-mounted fan from below.

Tab. 2: Connection designations

[Diagrams showing connection diagrams and connector/strain relief]

4.2 Installing the pilot wire

To control the EC roof-mounted fans via an external control unit (e.g. SK 3235440), types SK 31405xx have additional connections for the pilot wire.

• Release and remove the jumper between the "+10 V" and "0 – 10 V/PWM" (terminals 1 and 2) connections.
• Use a screwdriver with a 3.5 x 0.5 mm blade.
• Open the terminal with the screwdriver and insert the connection cable as shown in the connection diagram.
• Remove the screwdriver.
• To operate without a pilot wire, the jumper should be left in the connection terminal. The unit will then be operated at maximum speed.

[Diagrams illustrating pilot wire connections and operation]

5. Commissioning

Once all the assembly and installation work is complete, switch on the power supply to the roof-mounted fan.

The roof-mounted fan operates automatically, in other words, the fan will start up once the power has been switched on.

EC roof-mounted fans start running with a delay of approx. 15 sec.

6. Inspection and maintenance

Disconnect the electrical connection cable of the roof-mounted fan from the power supply.

The installed maintenance-free fan is mounted on ball bearings, protected against moisture and dust, and fitted with a temperature monitor.

The life expectancy is at least 50,000 operating hours (L10, 40 °C).

The roof-mounted fan is therefore largely maintenance-free.

From time to time, the components may need to be cleaned using a vacuum cleaner or compressed air if they become visibly dirty.

Any stubborn, oily stains may be removed using a nonflammable detergent, such as degreaser.

Never use flammable liquids for cleaning the unit.

Sequence of maintenance work

• Check the level of dirt: If necessary, vacuum the fan housing, or clean with compressed air.
• Filter soiling: Replace the filter.
• Check the noise generation of the fan.

7. Storage and disposal

The roof-mounted fan must be stored at a temperature within the range specified in the technical data.

Disposal can be entrusted to the Rittal factory. Please call for further information.

8. Technical specifications

Tab. 3: Technical specifications

[Diagram showing dimensions]

9. Accessories

Pleated filter

Tab. 4: Pleated filter

Chopped-fibre filter

Tab. 5: Chopped-fibre filter

Enclosure internal thermostat

Tab. 6: Enclosure internal thermostat

Digital enclosure internal temperature display and thermostat

Tab. 7: Digital enclosure internal temperature display and thermostat

Hygrostat

Tab. 8: Hygrostat

Speed control

Tab. 9: Speed control

Sensor for speed control

Tab. 10: Sensor for speed control

Control unit for speed control

Tab. 11: Control unit for speed control

Outlet filter

Tab. 12: Outlet filter

10. Warranty

The conditions named in the sales and delivery conditions of the associated Rittal agents and subsidiaries apply.

11. Customer services addresses

Headquarters Germany

RITTAL GmbH & Co. KG
Auf dem Stuetzelberg
35745 Herborn
Germany
Phone +49(0)2772 505-1855
Fax +49(0)2772 505-1850
E-mail: service@rittal.de

Service HUB USA

RITTAL North America LLC
801 State Route 55 Dock 25
Urbana, OH 43078
Phone: +1 800 477 4000, option 3
E-mail: rittal@rittal.us

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 India Pvt. Ltd.
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

EU Declaration of Conformity

Dri171781400

We, Rittal GmbH & Co. KG • Auf dem Stützelberg 35745 Herborn, declare that the products:

Dachlüfter / Roof Mounted Fan

SK 3138.000 SK 3139.100 SK 3139.110 SK 3140.100 SK 3140.110 SK 3140.140
SK 3140.500 SK 3140.510

conform to the following Directives:

• Machinery Directive 2006/42/EG – Machinery Directive 2006/42/EC
• EMC Directive 2014/30/EU – EMC Directive 2014/30/EU

Applied harmonised standards:

• EN ISO 12100: Safety of machinery - General principles for design - Risk assessment and risk reduction
• EN 60335-1: Household and similar electrical appliances - Safety - Part 1: General requirements
• EN 60529: Degrees of protection provided by enclosures (IP code)
• EN 61000-6-2:2005 Electromagnetic compatibility (EMC) - Part 6-2: Generic standards; Immunity ...
• EN 61000-6-3:2007, A1:2011 Electromagnetic compatibility (EMC) - Part 6-3: Generic standards; Emission
• EN 61000-3-2:2014 Electromagnetic compatibility (EMC) - Part 3-2: Limits - Limits for harmonic current emissions
• EN 61000-3-3:2013 Electromagnetic compatibility (EMC) - Part 3-3: Limits - Limitation of voltage changes

Herborn, 01.05.19

Responsible for documentation
Rittal GmbH & Co. KG
Auf dem Stützelberg
35745 Herborn

Frank Himmelhuber, Geschäftsbereichsleiter FuE
Executive Vice President R&D

Id. Nr. 335612
Dok. Nr. D-0000-00000434

If any amendments to the assembly not explicitly agreed with us, this EU Declaration of Conformity shall be invalidated.