Recovery and recycling (Air conditioning)

RECOVERY AND RECYCLING

NOTE: An air conditioning portable Refrigerant Recovery, Recycling and Recharging Station for use with R134a refrigerant incorporates all the features necessary to recover refrigerant R134a from the A/C system, to filter and remove moisture, to evacuate and recharge with reclaimed refrigerant. The unit can also be used for performance testing and air conditioning system analysis.

1. Connect a refrigerant station to high and low pressure servicing connections.
2. Operate the refrigerant recovery system in accordance with the manufacturer’s instructions.

WARNING: Refrigerant must always be recycled before re-use, to ensure that the purity of the refrigerant is high enough for safe use in the air conditioning system.

Recycling should always be carried out with equipment which is design certified by Underwriter Laboratory Inc. for compliance with SAE - J1991. Other equipment may not recycle refrigerant to the required level of purity.

• A R134a Refrigerant Recovery Recycling
• Recharging Station must not be used with any
• other type of refrigerant.

• Refrigerant R134a from domestic and
• commercial sources must not be used in motor
• vehicle air conditioning systems.

EVACUATION AND RECHARGING

WARNING: Servicing must be carried out by personnel familiar with both the vehicle system and the charging and testing equipment. All operations must be carried out in a well ventilated area away from open flame and heat source.

1. Add calculated refrigerant oil to the compressor as necessary.
2. Renew receiver/dryer. See Repairs.
3. Connect a Refrigerant Station to the high and low pressure servicing connections.

CAUTION: Whenever the refrigerant system is opened, the receiver/dryer must be renewed immediately before evacuating and recharging the system.

4. Operate the refrigerant evacuation system according to the manufacturers instructions.

NOTE: If the vacuum reading is below 700 mm/Hg after 15 minutes, suspect a leak in the system. Partially recharge the system and check for leaks using an electronic leak tester.

CAUTION: The system must be evacuated immediately before recharging commences. Delay between evacuation and recharging is not permitted.

5. Operate the refrigerant recharging system according to the manufacturers instructions. Amount of refrigerant required to charge system is 725 ± 25 g.
6. If the full charge has not been accepted by the system, start the engine and run it at 1500 rev/min for a minimum of 2 minutes.
7. Switch on the air conditioning system, open the car windows, set the temperature control to cold and switch the blower to maximum speed.
8. Consult the Refrigerant Station Manual for the correct procedure to complete the charge.
9. Carry out the air conditioning system performance test.
10. Switch off air conditioning and wait for pressures to equalize, before disconnecting charging hoses from vehicle.