VW Touran manuals

Volkswagen Touran Service Manual: A/C Compressor with A/C clutch

  Caution
Non-approved tools or materials such as leak sealing additives can cause damage or malfunctions in the system.
Only use tools and materials approved by the manufacturer.
The warranty is voided if non-approved tools or materials are used.
All components of the refrigerant circuit submitted for quality observation are always to be sealed (use original sealing caps of original part).
Replace damaged or leaking components of refrigerant circuit. Refer to → Chapter "Components, Replacing".
To date, the original parts (compressor, reservoir, receiver/dryer, evaporator and condenser) have been filled with nitrogen gas. This charge is being gradually discontinued. There is little or no pressure equalization when removing the sealing plugs from the original part.
   
The engine drives the A/C compressor via a ribbed belt.
An electromagnetic clutch installed on the A/C compressor creates a frictional connection between the ribbed belt pulley and A/C compressor crankshaft when the air conditioning system is switched on.
If the A/C compressor sticks, a fuse installed in the compressor ribbed belt pulley releases the electromagnetic clutch and protects the ribbed belt pulley from overload.
The A/C compressor extracts the refrigerant gas from the evaporator, compresses it and relays it to the condenser.
  Note
The A/C compressor contains refrigerant oil, which can be mixed with refrigerant R134a under any temperature.
The type plate lists the type of refrigerant required for the A/C compressor. A regulator valve regulates pressure within the specified range (control characteristics) on the low pressure side.
So that the A/C compressor does not get damaged when the refrigerant circuit is empty, the A/C clutch is turned off and the A/C Compressor Regulator Valve -N280- is no longer activated (A/C compressor runs at idle with engine).
  A/C Compressor with A/C clutch
Refrigerant Circuit Component Arrangement
  Caution Non-approved tools or materials such as leak sealing additives can cause damage or malfunctions in the sys ...

A/C Compressor without Magnetic Clutch
  Caution Non-approved tools or materials such as leak sealing additives can cause damage or malfunctions in the sys ...

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