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ARMY TM 9-4120-381-14
NAVY EE-000-CA-MMA-010/7053-AC
AIR FORCE TO 35E9-136-31
13.
Open CGV and monitor weight of refrigerant cylinder as compressor draws additional refrigerant into system.
14.
Close CGV when complete charge weight has been admitted.
15.
Perform pressure check and repeat steps 14 and 15, if necessary (para 5-18)
16.
After 15 minutes, observe sight glass (para 5-28).
a. Milky white or bubbly liquid means system has a low charge.
NOTE
Bubbles may be visible at temperatures less than 70°F (21°C) or greater than 100°F (38°C).
b.
Clear bubble-free liquid means system is fully charged.
17.
If charge is low add gas refrigerant.
a.
Be sure that drum is switched to gas position.
b.
Open CGV
c.
Continue to charge until sight glass is clear and bubble free.
d.
Close CGV.
18.
Check air conditioner for proper cooling. There should be at least a 15° temperature difference between
evaporator discharge air and inlet air.
19.
Disconnect air conditioner input power at source.
20.
Turn mode selector switch to OFF.
21.
Close all manifold valves.
22.
Disconnect manifold hoses from service valves, R-22 cylinder, and attach them to hose rack.
FOLLOW ON PROCEDURE
1.
Install right front condenser panel (para 4-28).
2.
Install right front evaporator panel (para 4-25).
3.
Connect air conditioner input power at source.
4.
Set MODE SELECT SWITCH to system configuration. (AUTO or REMOTE).
5-33
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