Contents hide
1 PCE INSTRUMENTS RRU 10 Refrigerant Recovery Device
2 Product Information
3 Product Usage Instructions
4 GENERAL SAFETY
5 OPERATION MANUAL
6 INTRODUCTION OF OPERATION PANEL
7 PARTS DIAGRAM
8 SPECIFICATION
9 WIRING DIAGRAM
10 OPERATING INSTRUCTION
11 TROUBLESHOOTING
12 PCE Instruments Contact Information
12.1 FAQ
13 Documents / Resources
13.1 References

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PCE INSTRUMENTS RRU 10 Refrigerant Recovery Device

PCE-INSTRUMENTS-RRU-10-Refrigerant-Recovery-Device-product

Product Information

Specifications:

  • Model: PCE-RRU 10
  • Refrigerant Recovery Device
  • Weight: 23.2 lbs
  • Graphics Code: RR24M

Product Usage Instructions

Safety Precautions:
Before using the recovery unit, please read the manual carefully to understand the safety precautions:

  • Only a qualified technician should operate the recovery unit.
  • Ensure proper grounding of the equipment before starting.
  • Electrical wires must be well connected and grounded by a qualified electrician.
  • Power must be cut off and no display on LCD before inspecting or repairing.
  • If the power supply cord is damaged, replace it carefully or purchase a new one from the distributor.

Operation Panel:
The operation panel consists of different parts:

  • Closed: Inlet valve is closed
  • Recover: Input valve is partially opened
  • Fast: Input valve is fully opened
  • Purge: Input closed, and output is opened to remove refrigerant
  • Mute: Audible alerts and beeps turned off
  • Restart: Press START to resume activity after an error

Operating Instruction:

  1. Connect the hoses correctly and firmly as per the connection diagram.
  2. Ensure vapor and liquid valves of AC system and recovery tank are closed.
  3. Observe low pressure gauge reading, when it reaches -20inHg, LP cutoff turns on, and machine stops work.

GENERAL SAFETY

Use information

  • In order to prolong the usage of the recovery unit, please read the manual carefuily before using, which can help you to fuily understand the safety, specification as weil as operating procedure of the recovery unit.
  • Please check the product received is same as you ordered. Please check the product if there is any damage during transportation. Contact with local distributor if the above problem is found.
  • Please read the manual carefuily and use the unit according to the product operating procedures.

Safety indication

  • warning
    This mark indicates procedures that must be strictly observed to prevent hazards to people.
  • Notice
    • This mark indicates procedures must be strictly observed to prevent damage or destruction of the unit.
    • Matters needing attention
  • warning
    • Only a qualified technician can operate this recovery unit.
    • Before starting the equipment, make sure that it is weil grounded.
    • While using electrical wire, the wire must be weil connected and grounded.
    • Only a qualified electrician can do the wire connection according to the technical standard and circuit diagram.
    • The power must be cut oft and no display in LCD before inspecting or repairing. II the original power supply cord is damaged, choose carefully for the replacing one, or you may directly buy from the distributor.
    • Please take power supply and the capacity of your ammeter and electrical wire.
    • Only authorized refillable refrigerant tanks can be used. It requires the use of recovery tanks with a minimum working pressure of 45 bar(652.6 psi). Do not overfill the recovery tank, maximum at 80% capacity to make sure that there is enough space for liquid expansion. Overfilling of the tank may cause a violent explosion.
    • Always wear safety goggles and protective gloves while working with refrigerants to protect your skin and eye from hurting by refrigerant gases or liquid.
    • Do not use this equipment near flammable liquid or gasoline.
    • An electric scale is needed to prevent overfilling.
    • Be sure that the place where you are working is thoroughly ventilated.
  • Notice
    • Be sure the unit is working under the right power supply.
    • When using an extension cord it should be minimum 14 AWG and no longer than 25 feet, otherwise it may cause the voltage drop and damage the compressor.
    • The input pressure of the unit should not exceed 26bar (377.0psi) .
    • The unit need to be laid in horizontally, otherwise it will lead to unexpected vibration, noise or even abrasion.
    • Do not expose the equipment to sun or rain.
    • The ventilation opening of the unit must not be blocked.
    • If the overload protector pops, reposition it after 5 minutes.
    • When doing self purging operation, the knob must be turned slowly to “PURGE” to ensure the inlet pressure is less than 5 bar (72.5 psi).
    • If fluid hammer happens in the recovery, please turn the knob slowly to “SLOW” position and do not let reading pressure drop to zero.
    • To ensure the stable running of the machine, close the knob to the close postion when the outlet pressure over 27 bar (391.6 psi), to decreasing the inlet pressure (not reach 0) . This action is to make the outlet pressure stable or  decreasing, the controled pressure less than 30bar (435.1 psi).
    • The equipment is intended for serving air-conditioning and refrigeration systems containing more than 200 lbs of high-pressure refrigerant.
    • The tank and hose used must be complied with the local regulations.

OPERATION MANUAL

  1. Do not mix different refrigerants together in one tank, otherwise they could not be separated or used.
  2. Before recovering the refrigerant, the tank should achieve the vacuum level: -29.6inHg , for purge non-condensable gases. Each tank was full of nitrogen when it was manufactured in the factory, thus the nitrogen should be evacuated before first use.
  3. The knob should be at “Close” Position before operation. All the valves must be closed, the input and output fittings should be covered with protective caps when the unit is not in operation. The air moisture is harmful to the recovery result and will shorten the life span of the unit.
  4. A filter drier should always be used and should be replaced regularty. And each type of refrigerant must have its own filter. For the sake of ensuring the normal operation of the unit, please use the filter specified by our company. High quality filter drier will bring high quality services.
  5. Specialcaution is needed when recovering from system, and two dry filters are needed.
  6. The unit has an Internal High Pressure protector. If the pressure inside the system is above rated shut-off pressure (see specification), compressor will automatically shut off and the HP cutoff shows.

To restart the compressor, please lower the internal pressure (Output gauge indicates lower than 30 bar/435.0 PSI), after the HP cutoff blinks, then Press the “START” button to restart the compressor.

When high pressure protection initiates, please find out the cause and deal with it before restarting the unit.

  1. The input valve of the refrigerant tank is closed—— opening the valve will help solve the problem.
  2. The connecting hose between the recovery unit and refrigerant tank is stuck— —close all the valves and replace the connecting hose.
  3. The temperature of the refrigerant tank is too high, pressure is too high causing high pressure- make the tank cool.

INTRODUCTION OF OPERATION PANEL

PCE-INSTRUMENTS-RRU-10-Refrigerant-Recovery-Device-fig- (1)

  • Close: Inlet valve is closed
  • Recover: Input valve is partially opened
  • Fast: Input valve is fully opened
  • Purge: Input closed, and output is opened to allow the unit to remove most of the refrigerant inside the recovery machine

Fault: Error Codes

  • E1: The pressure sensor is disconnected
  • Fault 2: Input voltage is too low
  • Fault 3: High input voltage
  • Fault 4: Overcurrent protection
  • Fault 5: Temperature Sensor Breaker
  • Fault 6: Temperature sensor Short Circuit
  • Fault 7: Temperature protector breaker.
  1. Mute: Audible alerts and beeps are turned off
  2. Fan: This icon rotates while the machine is running. When the machine stops, the icon is still
  3. Restart: It will flash after an error has occurred and settled. Pressing START will resume activity.

PARTS DIAGRAM

PCE-INSTRUMENTS-RRU-10-Refrigerant-Recovery-Device-fig- (2)

Parts name

  1. Left Side Plate
  2. Fan
  3. Wind Guide Cover
  4. Motor
  5. Support Assy
  6. Top Plate
  7. Knob
  8. Control Assy
  9. Valve Assy
  10. Cylinder
  11. Coupling
  12. Compressor
  13. Condenser
  14. Rear Plate
  15. Right Side Plate
  16. Base
  17. Motor Control
  18. Front Side Plate
  19. Gauge

SPECIFICATION

 
 

 

Refrigerants

 Category[II: R12,R134a,R401C,R406A,R500,1234YF CategoryIV: R22, R401A, R401B, R402B, R407C, R407D, R408A,

R409A, R502, R509

Category V :  R402A,R404A,R407A,R407B,R410A,R507, R32
 

Power

 220V-230V AC, 50/60Hz                                      11 SV AC, 60Hz
Maximal Current Draw 6A                                                                   12A
Motor                                                                         Brushless Motor 1 HP
Motor Speed 3000 RPM
Compressor Oil-less, Air-cooled, Piston
High Pressure Protector 38.5bar/3850kPa(558psi)
Operating Temperature 32 104°F
Dimensions 14.5×9.9×11.7 inch
Net Weight 23.2 lbs

NRDD

Refrigerants R134a R22 R410A
Liquid 2.6 kg/min 2.9 kg/min 3.9 kg/min
Push/Pull 7.5 kg/min 8.5 kg/min 9.5 kg/min

Notice
The vapor flow rate is proportioned to inlet pressure.

PCE-INSTRUMENTS-RRU-10-Refrigerant-Recovery-Device-fig- (3)

INTRODUCTION OF OPERATION PANEL

PCE-INSTRUMENTS-RRU-10-Refrigerant-Recovery-Device-fig- (4)

  • Start/Stop: Starts and Stops recovery unit
  • LP Switch: Hold for 3 seconds to switch between LP1, LP2, LP3
  • Units/Zero: Press to change units to InHg, Kpa, Psi, Kg/f, Bar, Mpa. Hold for 3 seconds to zero out readings
  • Cancel Alarm: Hold for 3 Seconds to mute recovery unit
  • LP1: (Auto shutoff with manual restart) If the inlet pressure is lower than -20inHg for 20 seconds, the unit will shut down. “LP Cutoff” will be displayed. When LP ≥ 0 inHg you must press START to restart the recovery unit
  • LP2: (Auto Shutoff with automatic restart) If the inlet pressure is lower than -20 inHg for 20 seconds the unit will shutdown “LP Cutoff” is displayed. When LP ≥ 0 inHg the unit will restart automatically
  • LP3: (Continuous Run) The recovery unit will run continuously, no matter what the level the input pressure is (LP)
  • O.F.P Cutoff: Will Light up when the recovery cylinder is 80% filled, or if the OFP cable is shorted. The machine will stop running
  • LP Cutoff: Will light up when low-pressure switch is activated for more than 20 seconds below -20 inHg
  • HP Cutoff: Will Light up when high-pressure switch is activated above 560 Psi

WIRING DIAGRAM

PCE-INSTRUMENTS-RRU-10-Refrigerant-Recovery-Device-fig- (5)

Graphics Code ITEM
HS High Pressure Sensor
M Motor
MCB Motor Control Board
XS Socket
DCB Digital Gauge Control Board
LS Low Pressure Sensor
OFP Over Filling Protector
TP Temperature Protector
HP High Pressure Switch
TS Temperature Sensor

OPERATING INSTRUCTION

Refrigerant hoses exhaust

PCE-INSTRUMENTS-RRU-10-Refrigerant-Recovery-Device-fig- (6)

Ready for operation
Connect the hoses correctly and firmly. ( Please refer to the connection diagram)

  1. Confirm the vapor valve and liquid valve of AC system are in close position.
  2. Confirm the vapor valve and liquid valve of recovery tank are in close position.
  3. Open the vapor and liquid valves of manifold gauge.
  4. Loosen the connecting pipes of refrigerant tank.
  5. Open the check valve of pipes.
    Start operation
  6. Plug in the machine, turn on the power, and the LCD shows pressures.
  7. Turn the knob to “Recover”.
  8. Press the “START” button to start machine, it begins to purge inner air of the hose.
  9. Observe the reading of the low pressure gauge when it reaches to -20inHg, after 20 seconds, LP cutoff turns on and the machine stops work.
  10. Turn the knob to “Close”, LP cutoff blinks, press the power button and start machine.
  11. Turn the knob slowly to “Purge” and start self purging.
  12. Observe the reading of the low pressure gauge when it reaches to -20inHg for the second time, after 20 seconds, LP cutoff turns on and the machine stops work .
    Finish operation
  13. Turn the knob to “Close” and stop self purging.
  14. Connect the refrigerant hose to the tank.

Recovery mode

PCE-INSTRUMENTS-RRU-10-Refrigerant-Recovery-Device-fig- (7)

Ready for operation
Connect the hoses correctly and firmly. (Please refer to the connection diagram)

Make sure all valves are closed.

  1.  Switch off the power of refrigerant equipment.
  2. Open the vapor and liquid valves of refrigerant equipment.
  3. Open the vapor valve of the refrigerant tank.
    Start operation
  4. Turn the knob to “Recover”.
  5. Press the “START” button to start machine.
    1. If recover liquid refrigerant, please open the liquid valve of the manifold gauge.
    2. If recover vapor refrigerant, please open the vapor valve of the manifold gauge.
  6. The recovery modewill be finished when machine runs to certain vacuum degree or automatic close of low pressure protection. Do not turn off the power after recovery finished and directly run self purging mode.

Notice
Olf fluid hammer happens in the recovery, please turn the knob to “Slow” position slowly, Then the reading of low pressure gauge drops until fluid hammer stops;but do not let reading pressure drop to zero, otherwise inlet port is not pumping once at zero pressure.
If it is difficult to start, turn to * CLOSE * when liquid, turn to ” PURGE ” when vapor, then press” START ” to restart the machine, and turn to the required position.

Self-purge mode
Notice
The unit must be purged alter each use; Liquid refrigerant remained may expand and damage thecomponents and pollute the environment.

PCE-INSTRUMENTS-RRU-10-Refrigerant-Recovery-Device-fig- (8)

Start operation

  1. The machine stops automatically after recovery finished with LP cutoff on.
  2. Turn the knob to “Close” and the LP cutoff blinks, press” START” button to start the machine.
  3. Turn the knob to “Purge” and start seif purging.
  4. The seif purging mode will be finished when machine runs to certain vacuum degree.
    Finish operation
  5. Turn the knob to “Close”.
  6. Turn off the power switch. Disconnect power cord.
  7. Close the check valve which connected to exhaust.
  8. Glose the wpor valve of the tank.
  9. Disconnect all hoses.

Liquid push/pull mode
Notice: An electric scale is needed to monitor the recover process to prevent overfilling.

PCE-INSTRUMENTS-RRU-10-Refrigerant-Recovery-Device-fig- (9)

Ready for operation
Connect the hoses correctly and firmly. (Please refer to the connection diagram) Make sure all valves are closed.

Start operation

  1. Open the vaporvalve, liquid valve of the HVAC system
  2. Open the vapor valve, liquid valve of the tank.
  3. Turn the knob to “Recover”.
  4. Press “START” button to start machine, then it starts liquid push/pull mode. If the reading on the scale keeps the same or changes slowly, it means liquid in HVAC system has been recovered and vapor recovery mode can be underway.
  5. Turn the knob slowly to “Purge” and start self purging mode for the liquid.
  6. Turn the knob to “Close”.
  7. Close the vapor valve, liquid valve of the HVAC system.
  8. Close the vapor valve, liquid valve of the tank.
  9. Reconnect the hoses and start recovery mode for the vapor.

Finish operation

TROUBLESHOOTING

Problem Cause Solution
LCD does not work after power is on 1. Power cord is damaged. 1. Replace cord.
2. Inner connection is loose. 2. Check the connection.
3. Connect to J6 is damaged. 3. Replace the connect.
4. Malfunction of circuit board. 4. Replace MCB or DCN circuit board. Contact VALUE tech support.
Machine does not run after pressing START 1. HP Cutoff, or OFP Cutoff works (screen shows). 1. Check if the connection between HP or OFP to DCB is good.
2. Fault 2 or Fault 3. 2. Adjust to correct voltage.
3. Fault 4, too much start-overload. 3. Turn to “CLOSE” when liquid, turn to “PURGE” when vapor, then press “START” to restart.
4. Fault 5. 4. Check if the connection between TS and MCB is good. If good, contact VALUE tech support.
5. Fault 6. 5. Check if TS connection is damaged. If not, contact NAVAC tech support.
6. Fault 7. 6. Check if the connection between TP and MCB is good. If good, contact NAVAC tech support.
7. Button is damaged. 7. Replace digital gauge.
8. Circuit board is damaged. 8. Replace circuit board.
Machine stops after running a period of time 1. Misoperation causes HP Cutoff. 1. Refer to clause 6 of OPERATION MANUAL.
2. Thermal protector is on and shows Fault 7. 2. When Fault 7 and Restart flash, press START.
3. Refrigerant is 80% in the tank, and O.F.P Cutoff shows. 3. Replace the tank. When O.F.P Cutoff and Restart flash, press START.
4. Recovery work is finished. LP Cutoff shows. 4. Could restart for other work.
E1 shows at LP or HP Pressure sensor is not connected well or is short circuit. Check if the connection between LS or HS to DCB is good. If good, replace pressure sensor.
Slow recovery rate 1. The pressure of the refrigerant tank is too high. 1. Cooling the tank helps decrease the pressure.
2. Piston ring of compressor is damaged. 2. Contact VALUE tech support.
Not evacuate 1. Connection hose is loose. 1. Tighten the connection hoses.
2. Machine leaks. 2. Contact VALUE tech support.

Disposal

  • For the disposal of batteries in the EU, the 2006/66/EC directive of the
  • European Parliament applies. Due to the contained pollutants, batteries must not be disposed of as household waste. They must be given to collection points designed for that purpose.
  • In order to comply with the EU directive 2012/19/EU we take our devices back. We either re-use them or give them to a recycling company that disposes of the devices in line with law.
  • For countries outside the EU, batteries and devices should be disposed of in accordance with your local waste regulations.
  • If you have any questions, please contact PCE Instruments.

PCE Instruments Contact Information

Germany

United Kingdom

The Netherlands

France

Spain

Italy

Turkey

United States of America

Denmark

www.pce-instruments.com

FAQ

Q: What should I do if the power supply cord is damaged?
A: Choose a replacing cord carefully or purchase one from the distributor to ensure safety.

Q: Who should operate the recovery unit?
A: Only a qualified technician should operate the recovery unit to prevent hazards.

Documents / Resources

PCE INSTRUMENTS RRU 10 Refrigerant Recovery Device [pdf] User Manual
RRU 10, RRU 10 Refrigerant Recovery Device, RRU 10, Refrigerant Recovery Device, Recovery Device, Device

References

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