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E-Compressor For Hybrid Vehicles

WARNING:
  • High voltage at the high voltage system in a hybrid vehicle. Health risks to persons with life assist systems.
  • It will also be necessary to work on the high voltage system when performing the following procedures. Any work to be performed on a vehicle with a high voltage electrical system may only be performed by technician specifically trained to work on this system. The work must be performed by a certified high voltage technician.
  • Follow the General Warnings for working on the high voltage electrical system Electric Drive; Repair Group 93; General Warnings for Working on High Voltage Electrical Systems.
  • Switching off the high voltage system Electric Drive, Repair Group 93, Switching off the high voltage system
WARNING:

Danger of short circuit 

The A/C compressor works with 288 volts at 800 to 8, 600 RPM.

Do not touch the A/C compressor when starting the drive generators, danger of short circuit.

Fig 1: Identifying E-A/C Compressor
GWWN87-10738Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

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. The RPM controls the delivery.

The engine should only be started if the refrigerant circuit is completely assembled. Refer to REFRIGERANT CIRCUIT, GENERAL PRECAUTIONS .

The A/C compressor is equipped with a protected oil supply, this prevents A/C compressor damage in the event that the system is empty. This means that approximately 40 to 50 cm3 of refrigerant oil remains in the A/C compressor.

The A/C compressor has a relief valve.