Volkswagen Polo Service & Repair Manual: Refrigerant Circuit, Flushing
 Note
| For vehicles in which no adapters fit on to the refrigerant
pipes, for example, a blower pistol with rubber mouthpiece is to
be used to blow through individual components. Special care must
be taken not to damage the connections (crushing or scratching). |
| Evaporator is to be flushed via the connection for
low-pressure pipe (large diameter) after removing expansion
valve or removing restrictor. |
| Always flush components in direction opposite of refrigerant
flow direction.
|
| Check expansion valve and replace if dirty or corroded. |
| If there are dark, sticky deposits in the components that
cannot be removed with compressed air, replace these components. |
| Thin, light grey deposits on the insides of refrigerant
pipes do not impair the function of the components. |
| After flushing, always replace receiver/dryer or reservoir
and restrictor. Replace dryer cartridge or dryer on condensers
with attached dryer. |
|
|
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In order to be able to force moisture and other contaminants
out of refrigerant circuit, compressed air and nitrogen (to
force moisture out of refrigerant circuit) ar ...
Other materials:
Critical Point
Vehicle air conditioning systems make use of the
vaporization and condensation process. In this case, one works
with a substance which boils easily, designated as refrigerant.
The refrigerant employed is tetrafluoroethane R134a, which
bo ...
Infrared Dryer -VAS6877
Definition:
Infrared Dryer -VAS6877-
Product Description:
The infrared dryer is used to dry paste, filler, base paint,
top coats and clear coats on vertical and horizontal surfaces.
...
Crimping Pliers - .35-2.5mm -VAS1978/1A
The Crimping Pliers - .35-2.5mm -VAS1978/1A- or the Wiring
Harness Repair - Crimping Plier - Base Tool -VAS1978/1-2-
together with the Wiring Harness Repair - Crimping Head -
.35-2.5mm -VAS1978/1-1-, or the Wiring Harness Repair Set -
Crimping Head - 4-6 ...
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