ARMY TM 9-4120-380-14
NAVY EE-000-BA-MMA-010/7053-AC
AIR FORCE TO 35E9-136-21
5 15. CHARGING REFRIGERANT SYSTEM. This task covers service.
INITIAL SETUP
Tools:
Tool kit, service, refrigeration unit (Item 1, Appendix B)
Recovery and recycling unit, refrigerant (Item 22, Appendix B)
Goggles, industrial (Appendix C)
Gloves, chemical (Appendix C)
Personnel.
1
Materials:
Refrigerant R-22 cylinder (Item 6, Appendix E)
Rags (Item 7, Appendix E)
Equipment Conditions:
Disconnect input power to the air conditioner before performing any internal
maintenance Voltages used can KILL Shutting the unit off at the control panel does not
disconnect unit power
(1)
Disconnect air conditioner input power at source;
(2)
Evacuate refrigerant system (paragraph 5.14); and
(3)
Remove return air filter (paragraph 4 26)
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 in any situation where skin-
eye-contact is possible
Prevent contact of refrigerant gas with flame or hot surfaces. Heat causes the
refrigerant to break down and form carbonyl chloride (phosgene), a highly poisonous
and corrosive gas.
a. After system has been satisfactorily evacuated, it must be fully charged with R-22 refrigerant
5-25
