Bentley Volkswagen.Golf.Jetta.R32.Official.Factory.Repair.Manual.1999-2005

General information on refrigerant circuit
Página 5 de 21
Reservoir
The reservoir collects the vaporized and gaseous mixture
coming from the evaporator to ensure the A/C compressor
only receives gaseous refrigerant. Gaseous refrigerant is
formed from the vapor.
The refrigerant oil flowing in the circuit is not retained in the
reservoir as it has an oil drilling.
Moisture which has entered the refrigerant circuit during
repairs will be collected by a filter (desiccant bag) in the
reservoir.
Gaseous refrigerant is extracted with oil by the A/C
compressor.
Note:
- Replace the reservoir if refrigerant circuit has been open
for a long time (beyond the normal repair time) and
moisture has penetrated inside, or if required due to a
specific complaint 00-8, Components, replacing .
- Remove sealing plugs - A - and - B - only immediately
prior to installing.
- A desiccant bag in an unsealed reservoir is saturated with
moisture after a short period of time and unusable.
- When installing, note arrow for direction of flow if
necessary.
Restrictor
The restrictor creates a constriction. This constriction
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 constriction there is a strainer for
contaminants and after the constriction 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.
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13/2/2005