Volkswagen Polo Service & Repair Manual: Expansion Valve

Volkswagen Polo Service & Repair Manual / Refrrigerant R134a Servicing / Refrigerant Circuit General Information / Refrigerant Circuit Components / Expansion 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 expansion valve atomizes the streaming refrigerant and controls the flow quantity so that the vapor is gaseous only at the evaporator outlet, depending on the heat transmission.

Expansion Valve

Receiver/Dryer

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

O-Ring

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

Other materials:

Refrigerant Circuit with A/C Service Station, Draining
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. ...

EU Type Approval Number, Sales Code and Sales or Trade Name
The Additional Descriptions Only Apply to VW Vehicles. Since 01/01/1998, all passenger vehicles licensed for road use within the European Union must possess type approval according to EU guidelines . Vehicles licensed for road use with single-vehicle approval accordin ...

First aid kit and warning triangle
Fig. 153 In the luggage compartment: holder for the first aid kit Fig. 154 In the luggage compartment. A: Warning triangle under the loading edge, B: Warning triangle in the vehicle tools First read and observe the introductory information and safety warnings First aid kit A first-ai ...