VW Polo manuals

Volkswagen Polo Service & Repair Manual: Restrictor

  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 restrictor creates a constriction. This restriction reduces the flow and creates high and low pressure sides in the refrigerant circuit. Before the restrictor the refrigerant which is under a higher pressure is warm. After the restrictor the refrigerant which is under a low pressure is cold. Before the restriction there is a strainer for contaminants and after the restriction there is a strainer, to atomize the refrigerant before it reaches the evaporator.
  Note
Arrow -A- on restrictor points to evaporator.
Replace after each opening of the circuit.
Note different versions.
Refer to → Rep. Gr.87.
Refer to the Parts Catalog.
 

Restrictor

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

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

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