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87
Air
Conditioner
928
Installation
work with intervention
in the refrigerant
system
The contents of the air-conditioning
system
must be disposed of in accordance
with the
relevant regulations
before all work on the air-
conditioning
system which necessitates open-
ing of the refrigerant system. The safety reguia-
tions must also be observed.
Dirt and moisture must be kept out of the
piping system of the air-condftioning
system.
Extreme cleanliness must therefore be ob-
served for all work. No parts of the system
must be cleaned inside with hot steam under
any circumstances.
Only nitrogen must be
used for cleaning.
When replacing a component,
all openings
must be sealed with a suitable stopper.
General work sequence
1. Syphon off refrigerant.
2. Remove faulty parts.
3. Evacuate.
4. Check system for leaks.
5. Flush with refrigerant.
6. Syphon off system again.
7. Evacuate.
8. Fill.
Note
Pay attention to sealing rings when discon-
necting or connecting
the hose connections.
67 - 4d
Installation
work on the air-conditioning
system
a
Printed in Germany - XXV, IS%
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