Touareg V6-3.2L (BMX) (2005)
High Pressure Safety Valve HVAC: Description and Operation
A/C Refrigerant System, Component Overview
NOTE: Components illustrated here are for reference only. Actual components installed on Touareg may appear differently.
Compressor
A variable displacement, externally regulated compressor is used in the Touareg. The compressor is driven continuously (no A/C clutch). Compressor
output is regulated by the Climatronic control module -J255- based on input signals from the high pressure sensor -G65- and evaporator vent temperature
sensors. -J255- provides an output signal to A/C compressor regulator valve -N280- in accordance with the interior temperature setting and refrigerant
system pressures/engine load.
The compressor on V6 and V8 models is driven by a ribbed belt on the engine. Compressor on V10 TDI models is driven by a Hardy-coupling attached
to the power steering pump.
Low-pressure refrigerant gas from the evaporator is compressed by the compressor. After compression, the refrigerant gas (now high-pressure) flows to
the condenser.
NOTE:
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The compressor contains refrigerant oil that is mixable under all temperatures with the refrigerant.
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A label on the compressor may indicate that compressor is for R-134a systems only.
Condenser
The condenser transfers heat from the compressed refrigerant gas to the outside air which causes the refrigerant to change state from a gas to a liquid.
NOTE: The condenser for the R-134a refrigerant system may be identified with a green label.