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TM 9-4120-367-14
TM 07592B-14/1
6.7 REFRIGERANT CHARGING WITH GAS. - Continued
Location/Item
Action
Remarks
Charging
c. Open refrigerant drum valve slightly to purge air
- Continued
from charging line. Tighten connection at charg-
ing valve. Close refrigerant drum valve.
d. With the air conditioner operating slowly, admit
gas to system.
e. Close valves and carefully loosen the charging
line to release trapped pressure. Disconnect
charging line and install charging valve cap. Op-
erate air conditioner in cooling mode for 15
minutes.
f. Check liquid sight indicator. If indicator regularly
shows bubbles, repeat Steps b. through e., ad-
ding refrigerant until indicator is clear.
NOTE
On cold days it may be necessary to
place refrigerant drum in container of
warm water not over 120°F
(48.9°C).
6-23
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