ARMY TM 9-4120-380-14
AIR FORCE TO 35E9-136-21
5.10. DISCHARGING REFRIGERANT SYSTEM. This task covers service.
Tool kit, service, refrigeration unit (Item 1, Appendix B)
Recovery and recycling unit, refrigerant (Item 22, Appendix B)
In accordance with Environmental Protection Agency regulations, refrigerants cannot be
discharged into the atmosphere. A refrigerant recovery and recycling unit must be used
Operation of the recovery/recycling unit must be by AUTHORIZED PERSONNEL ONLY
Death or serious injury may result if personnel fall 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
a. Connect and operate a recovery/recycling unit m accordance with manufacturer's instructions (see fig. 54).
Do not permit the oil to escape from the unit. If oil is escaping, close the valve(s)
slightly to prevent possible oil loss.
Do not permit the refrigerant to escape fast enough to form ice or frost on either the lines
or the valve(s) to prevent possible damage to system