Volkswagen Polo Service & Repair Manual: Refrigerant Circuit Component Arrangement
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. |
| High pressure side are the condenser, receiver/dryer and
restrictor or expansion valve to separate the high and low
pressure liquid ends. |
| High pressure results from the restrictor or expansion valve
forming a constriction and causing the refrigerant to
accumulate, thus leading to an increase in pressure and
temperature. |
| Excess pressure results if too much refrigerant or
refrigerant oil is used, the condenser is contaminated, the
coolant fan is malfunctioning, the system is blocked or if there
is moisture in the refrigerant circuit (the restrictor or
expansion valve freezes). |
| Low pressure side are the evaporator, reservoir, evaporator
temperature sensor and compressor to separate high and low
pressure gas ends. |
| A drop in system pressure can occur due to loss of
refrigerant, restrictor or expansion valve (restriction not
given), A/C compressor malfunction or iced evaporator. |
|
|
|
Caution
Non-approved tools or materials such as leak sealing
additives can cause damage or malfunctions in the
sys ...
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Commercially Available Tools and Materials
Note
This list outlines the testers, tools and materials required
for expert refrigerant circuit repair work.
Caution
Non-approved tools or materials such as leak sealing
additiv ...
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