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TM 9-4120-367-14
TM 07592B-14/1
6.7 REFRIGERANT CHARGING WITH GAS. - Continued
Location/Item
Charging
- Continued
Action
Do not attempt to charge Iiquid refriger-
ant into the suction line. The compres-
sor would be damaged.
If compressor knocking or pounding is
heard when charging with gas, shut
down at once and release some
refrigerant.
NOTE
Two kinds of refrigerant drums are in
general use. One is equipped with a
single shutoff valve and must be in-
verted when charging liquid refriger-
ant. The other is equipped with a va-
por valve and a Iiquid valve, which
makes it possible to charge either liq-
uid or vapor when the drum is
upright.
NOTE
Whenever available, use recycled
refrigerant for charging the refrigera-
tion system.
a. Place refrigerant drum in upright position.
When adding refrigerant, use extreme
care to avoid adding refrigerant to the
system too fast which would cause slug-
ging at the compressor.
b. Remove cap from low pressure (suction side)
charging valve and loosely connect charging line
to valve. Purge air from line.
Remarks
6-22
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