TM 9-4120-388-14
REFRIGERATION SYSTEM REPAIRS GENERAL. The refrigeration system must be totally discharged before
5-6.
any maintenance action that requires opening of the pressurized system. Leak testing and dehydrator replacement are
required after any system component has been removed and replaced. The system must be evacuated before it is
charged. The system must be properly charged to function properly.
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 gas being discharged under
pressure. Sudden and irreversible tissue damage can result from freezing. Wear
thermal protective gloves and face protector goggles in any situation where skin-
eye-contact is possible. Prevent contact of refrigerant gas with frame or hot sur-
faces. 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 you fail to observe safety precautions. Never use a
heating torch on any part that contains refrigerant-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
