ARMY TM 9-4120-380-14
NAVY EE-000-BA-MMA-010/7053-AC
AIR FORCE TO 35E9-136-21
5 8. REFRIGERATION SYSTEM GENERAL REPAIRS. 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)
Gloves, chemical, (Appendix C)
Goggles, industrial (Appendix C)
DANGEROUS CHEMICAL (R22) is used in this equipment.
DEATH or severe damage 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
REFRIGERANT UNDER
PRESSURE
is used in the operation of this equipment.
DEATH
or severe injury may result if personnel fail to observe safety precautions Never use a
heating torch on any part that contains refrigerant R-22. Do not let liquid refrigerant
touch you, and do not inhale refrigerant gas.
NOTE
In accordance with Environmental Protection Agency regulations, refrigerants cannot be
discharged into the atmosphere. A refrigerant recovery and recycling unit must be used
whenever discharging the refrigerant system
Operation of the recovery/recycling unit must be by AUTHORIZED PERSONNEL ONLY.
REPAIR
a. The refrigeration system must be totally discharged before performing any maintenance action that requires
opening of the pressurized system (paragraph 5.10).
b. The drier filter replacement and leak testing are required after any system component has been removed and
replaced (paragraphs 5 23 and 5 13).
c. The system must be evacuated before it is charged (paragraph 5.14)
d. The system must be properly charged to function properly (paragraph 5 14).
5-10
