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Volkswagen Polo Service & Repair Manual: Electrically-Driven A/C Compressor for High Voltage System

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.
Hybrid vehicles have a high voltage system. 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.
De-energize the high voltage system. Refer to Electric Drive; Repair Group 93; High Voltage System, De-Energizing.
The electrically-driven A/C compressor has a different refrigerant oil!
See vehicle-specific repair manual.
Electrically-driven A/C compressor
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.
The A/C compressor extracts the refrigerant gas from the evaporator, compresses it and relays it to the condenser.
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 → Chapter „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.

Electrically-Driven A/C Compressor for High Voltage System

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

  Caution Non-approved tools or materials such as leak sealing additives can cause damage or malfunctions in the sys ...

Other materials:

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