ABS AUDI A4 2000 B5 / 1.G Refrigerant System Components Workshop Manual

87-29

Evaporator


Liquid refrigerant entering the evaporator absorbs heat from air passing
through the evaporator fins and cools the air. As the refrigerant absorbs
heat it turns to vapor and then is suctioned by the compressor.
Note:
Illustration shows the evaporator from an Audi 90 model.
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87-31

Accumulator


The accumulator traps the mixture of refrigerant vapor and gas coming
from the evaporator. While in the accumulator, the refrigerant vapor turns
to gas and, along with the refrigerant oil, is then suctioned by the
compressor.
An oil extraction passage is incorporated into the accumulator to ensure
that refrigerant oil flowing with the refrigerant does not remain in the
accumulator.
Any moisture in the system is absorbed by the desiccant in the
accumulator.
Note:
Do not remove caps -A- and -B- until ready to install new accumulator. If
caps are removed too soon, the dessicant becomes saturated with
moisture after a very short time. If this occurs, the accumulator must be
replaced.
Pa
ge 11 of 13 Refri
gerant s
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(R-134a
), com
ponents
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
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pair&id=AUDI.B5.HA01.87.6