Volkswagen Golf Service & Repair Manual: Before operating the air conditioning system after recharging with refrigerant

Volkswagen Golf Service & Repair Manual / Air conditioning system with refrigerant R134a / General notes on air conditioning systems / Basics for working on refrigerant circuit / Before operating the air conditioning system after recharging with refrigerant

After installing a new air conditioner compressor or filling with fresh refrigerant oil (e.g. after blowing out refrigerant circuit), turn compressor pulley 10 revolutions by hand before starting engine. This will prevent damage to the air conditioner compressor.

–	On 5-cyl. or 10-cyl. diesel engine, turn air conditioner compressor at overload protection 10 times by hand. Then install compressor. This will prevent damage to the air conditioner compressor.

–	Start the engine with the air conditioning system switched off (the air conditioning system magnetic clutch -N25- and the air conditioner compressor regulating valve -N280- are not activated).

–	After the engine has stabilised at its idling speed, switch on the air conditioner compressor and allow the engine to idle for at least 10 minutes at maximum cooling power.

O-ring

Use only O-rings that are resistant to refrigerant R134a and related refrigerant oils. O-rings are no longer colour-coded. Coloured and black O-rings are used. ...

General information on refrigerant circuit

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Other materials:

Evacuation and charging valves for quick-release couplings of air conditioner service station on refrigerant circuit
Special tools and workshop equipment required Torque wrench -V.A.G 1783- (2…10 Nm) with 1/4" ratchet adapter -VAS 6234- WARNING Danger of freezing injuries. ...

Evacuating refrigerant circuit using air conditioner service station
Always follow the procedure described in the user's manual for your air conditioner service station. The procedure described here is that for air conditioner service station -VAS 6007A-. Before the refrigerant circ ...

Component protection
First read and observe the introductory information and safety warnings Some electronic components and control units are fitted with component protection as standard, e.g the radio or navigation system. Component protection was developed as a protective mechanism in order to: Prevent any ...