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Home >> Volkswagen >> 2018 >> Beetle S, 2D Hatchback >> Repair and Diagnosis >> External Pages >> Different car >> Section 14 (Refrigerant R134A Servicing (Convertible)) >> 00 General, Technical Data >> Refrigerant Circuit General Information >> Refrigerant Circuit Components >> A/C Compressor With A/C Clutch:

A/C Compressor With A/C Clutch:

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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.

The engine drives the A/C compressor via a ribbed belt.

Fig 1: Identifying A/C Compressor
GWWV87-1447Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

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).