ARMY TM 9-4120-380-14
NAVY EE-000-BA-MMA-010/7053-AC
AIR FORCE TO 35E9-136-21
5.20. START UP AFTER REPAIRS. This task covers service.
INITIAL SETUP
Tools
Tool kit, service, refrigeration unit (Item 1, Appendix B)
Gloves, chemical (Appendix C)
Goggles, industrial (Appendix C)
Personnel:
1
Equipment Conditions
(1)
Replacement part has been leak-tested per paragraph 5.13; and
(2)
Remove compressor section pane' (paragraph 4.24).
SERVICE
Death or serious injury may result if personnel fail to observe safety precautions Use
great care to avoid contact with liquid refrigerant or refrigerant gas being discharged
under pressure.
Sudden and irreversible tissue damage can result from freezing.
Wear thermal protective gloves and a face protector or goggles m any situ ation where
skin-eye-contact is possible.
a.
Remove discharge and suction gauge caps
b.
Connect high pressure hose (red) to compressor discharge valve.
c.
Connect low pressure hose (blue) to compressor suction valve
d.
Remove yellow 3/8-inch hose (fig 54) end from hose rack and place m container.
e.
Open CGV and PGV
f.
Check that compressor discharge service valve is frontseated (clockwise).
g.
Backseat (counterclockwise) compressor suction valve.
h.
Open receiver service valve (slowly) to allow liquid refrigerant to enter system (see fig. 5-18).
i.
Slowly open CV and allow refrigerant to flow out into container (30 seconds to 1 minute) until system is purged.
j.
Backseat (counterclockwise) bypass service valve (see fig. 5-16)
k.
Backseat (counterclockwise) compressor discharge valve
5-40
