VW Golf manuals

Volkswagen Golf Service & Repair Manual: Electrical air conditioner compressor for high-voltage system

High voltage on high-voltage system of hybrid vehicle! Health risks for persons wearing medical devices!
Following procedure also requires work on high-voltage system. All work on vehicles with a high-voltage system may only be done by trained electricians. Work must be advised by a high-voltage technician.
Observe the general warning instructions for work on the high-voltage system ⇒ Electric drive, Repair group 93; General warning instructions for work on the high-voltage system.
Now, ensure there is no voltage in high-voltage system ⇒ Electric drive, Repair group 93; Ensuring there is no voltage in high-voltage system.
The electrical air conditioner compressor requires a different refrigerant oil!
For capacities, see workshop manual for specific vehicle.
Electrical air conditioner compressor
Danger of short circuit
The air conditioner compressor operates with 288 volts and at a speed range of 800 to 8,600 rpm.
Do not touch air conditioner compressor when drive units are starting. Danger of short circuit!
The air conditioner compressor draws refrigerant gas from the evaporator, compresses it and sends it to the condenser.
The air conditioner compressor contains refrigerant oil, which is miscible with R134a refrigerant at all temperatures.
The maker's nameplate states the refrigerant for which the air conditioner compressor is suitable. The flow rate is controlled via the engine speed.
The engine should be started only when the refrigerant circuit has been fully assembled → Chapter.
The air conditioner compressor has an internal oil circuit to ensure that the air conditioner compressor is not damaged when the refrigerant circuit is empty. This means that about 40 to 50 cm3 refrigerant oil remain in the air conditioner compressor.
The air conditioner has a pressure relief valve.

Electrical air conditioner compressor for high-voltage system

Air conditioner compressor without magnetic clutch, with elastic drive coupling
The air conditioner compressor is driven directly by the power steering vane pump. There is an overload protection on the drive shaft of the ai ...

The condenser transfers heat from the compressed refrigerant gas to the surrounding air. This allows the refrigerant gas to condense into liquid ...

Other materials:

Assembly overview - sill panel moulding
  Note The illustration shows the sill panel moulding on the left side. The right-hand side is similar (mirror image of left-hand side). I: sill panel moulding, 4-door model II: sill panel moulding, 2-door model 1 -  Sill ...

Assembly overview - front passenger side airbag
1 -  Electrical connections For front passenger side airbag igniter 1 -N131 2 -  Bolts Qty. 2 Clean prior to reinstalling Use with locking fluid D 197 300 A2. 8 Nm 3 -  Dash panel Renew dash ...

Overview of fitting locations - fuel supply system, Golf Variant
  Note Fuel lines are secured with O-type clips. These O-type clips must always be renewed every time they are removed. Start engine if fuel tank was empty. Then start the auxiliary heater repeatedly until the heater d ...

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