TM 9-4110-258-13
5.13
CHARGING THE REFRIGERANT SYSTEM.
This task covers:
b. Partial Charge
a. Full Charge
INITIAL SETUP
General Safetv Instructions:
Materials/Parts:
Refrigerant R-134a
WARNING
12, Appendix E
Conditions:
Dangerous chemical refrigerant under
l
pressure is used in the operation of this
equipment. Use great care to avoid
Service manifold installed
contact with liquid refrigerant.
Refrigeration system evacuated
Sudden and irreversible tissue damage
l
can result from freezing. Wear gloves and
a face protector or safety glasses in any
situation where skin or eye contact with
refrigerant is possible.
Heat may cause the refrigerant to
l
decompose and release irritating, toxic,
and corrosive gases. Prevent contact of
refrigerant with flame or hot surfaces.
Never introduce high discharge pressure
l
into a refrigerant cylinder. This can cause
the cylinder to rupture and injure
personnel.
a. Full Charqe.
CAUTION
The system must be evacuated before charging.
Moisture in the system will prevent the
refrigeration unit from operating properly.
(1) Connect the charge hose to a tank containing refrigerant R-134a set to deliver gas and the vacuum hose to
reclaim unit.
Check that compound gauge and pressure gauge valves are closed.
(2)
(3) Open vacuum and charge valves.
(4)
Open refrigerant tank valve. Operate reclaim unit for 3 to 5 seconds to purge hoses.
(5)
Close refrigerant tank, vacuum, and charge valves then stop reclaim unit.
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