Volkswagen Polo Service & Repair Manual: Evaporator

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

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 fluid refrigerant evaporates in the evaporator pipe coils. The heat required for this is extracted from the air flowing on the evaporator ribbing. The air cools off. Refrigerant evaporates and is extracted with the absorbed heat by the A/C compressor.

A defined amount of refrigerant is supplied to the evaporator by a restrictor or expansion valve. In systems with expansion valve, the throughput is regulated so that only gaseous refrigerant escapes the evaporator outlet.

Evaporator

Condenser

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

Reservoir

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

Other materials:

Refrigerant Oil
Refrigerant oil mixes with the refrigerant (about 20 - 40%, depending on compressor type and amount of refrigerant) and circulates constantly in the system, lubricating the moving parts. Special synthetic refrigerant oils, for example, ...

Special Tools
Special tools and workshop equipment required Suction Feed Spray Gun -VAG1538- Stone Chip Tester -VAS5102A- Paint Thickness Test -VAS5278- Paint Thickness T ...

Two-Part HS Premium Filler
Definition: Two-Part HS Premium Filler -LVM 013 171 A4-, dark gray Two-Part HS Premium Filler -LGF 013 007 A4-, light gray Two-Part HS Premium Filler -LGF 013 100 A4-, white ...