| The air-conditioner compressor is driven by the vehicle engine using a Poly-V belt. |
| An electromagnetic coupling on the air-conditioner compressor provides direct transmission between the belt pulley and the air-conditioner compressor (crankshaft) when the air-conditioner is turned on. |
| A short-circuit fuse mounted on the compressor pulley activates the electromagnetic coupling if the compressor turns with difficulty, protecting the belt transmission against excessive load. |
| The air conditioner compressor draws refrigerant gas from the evaporator, compresses it and sends it to the condenser. |
Note | t
| The air-conditioner compressor contains refrigerant oil which may be mixed with refrigerant R134a at any temperature. |
| t
| The manufacturer’s label specifies the refrigerant to be used for the specific air-conditioner compressor installed. A regulating valve adjusts the pressure in the low pressure side within the specified technical range (characteristic regulation curve). |
| t
| In order to prevent the air-conditioner compressor from being damaged if the refrigerant circuit is empty, the electromagnetic coupling is disconnected, and the air-conditioner compressor regulating valve -N280- is not activated (the compressor operates at idling speed with the engine). |
|
|
|
