TM 5-3805-291-23-2
AIR CONDITIONING SYSTEM SERVICE - CONTINUED
0222 00
CHARGING
0222 00
1.
Connect charging hose (7) from manifold gage set (1) directly to refrigerant tank valve (21) on top of refrigerant tank
(10) and hand tighten.
2.
Open refrigerant tank valve (21).
3.
Loosen charging hose (7) at manifold gage set (1) for 2 to 3 seconds, then hand tighten charging hose again to purge air
from line.
N OT E
Correct refrigerant charging is determined by weight only and never by gage pressure.
4.
Position refrigerant tank (10) on scale (22). Check weight of refrigerant tank periodically. Weight should decrease over
time.
5.
Open high pressure valve (12) on manifold gage set (1) to allow liquid refrigerant to charge system.
6.
When refrigerant reaches system capacity, close refrigerant tank valve (21) and high pressure valve (12).
7.
Record amount of refrigerant added to system.
8.
Disconnect charging hose (7) from refrigerant tank (10).
9.
While compressor (4) is still operating, close high pressure valve (23) on compressor and disconnect high pressure hose
(5) from system. Open valves (11 and 12) on manifold gage set (1). Close low pressure valve (24) on compressor and
disconnect low pressure hose (2) from system. Cap charging valves.
0222 00-6