VW Polo manuals

Volkswagen Polo Service & Repair Manual: Pressure Relief Valve

  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.
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.
   
The pressure relief valve is installed on the A/C compressor or receiver/dryer.
At a pressure of approximately 38 bar (551 psi) positive pressure, valve opens and closes again once pressure has dissipated (approximately 30 bar (435 psi)).
Refrigerant does not escape completely.
Depending on the version, a transparent plastic disc may be installed which breaks off as soon as the valve is activated.
 

Pressure Relief Valve

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

Refrigerant Circuit Design
...

Other materials:

Reinforced Shock Absorbers and Coil Springs
Reinforced shock absorbers and coil springs on the vehicle rear axle reduce pitching motions between the vehicle and the trailer. If not already installed in the factory, these shock absorbers and springs can often be retrofitted at authorized Volk ...

Driving a loaded vehicle
First read and observe the introductory information and safety warnings For good vehicle handling when driving a loaded vehicle, please observe the following: Stow all items of luggage securely . Accelerate carefully and gently. Avoid sudden braking and driving manoeuvres. ...

High Pressure Sensor -G65
  Note For switching pressures, removing and installing switches and switch arrangement and version, see vehicle-specific refrigerant circuit. Refer to → Rep. Gr.87.     ...

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