Volkswagen Polo Service & Repair Manual: Restrictor

Volkswagen Polo Service & Repair Manual / Refrrigerant R134a Servicing / Refrigerant Circuit General Information / Refrigerant Circuit Components / 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 ...

Other materials:

Preserving Wax (Spray Can)
Definition: Preserving Wax -D 308 SP5 A1- Edition 04/2009 Product Description The Preserving Wax -D 308 SP5 A1- provides optimal corrosion protection for areas in the body th ...

Two-Part Filler
Definition: Two-Part Filler -LLS MAX 202 M2-, medium gray Edition 03/2013 Product Description The Two-Part Filler -LLS MAX 202 M2-, (medium gray) is a high-quality two-part H ...

A/C Service Station, Connecting for Measuring and Testing
Caution If it is suspected that chemicals were added to the refrigerant circuit to seal leaks, do not connect the A/C service station and do not extract the refrigerant. ...