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TM 9-4110-257-14
5-7.DISCHARGING THE REFRIGERANT SYSTEM.
This task covers:
Discharge
INITIAL SETUP
Equipment Conditions:
Service manifold installed (para. 5-6).
Discharge.
(1) Check that the refrigerant system has not been pumped down (para. 4-67). If it has, open necessary valves
(para. 4-8) to allow discharge of all refrigerant.
CAUTION
Follow instructions for specific refrigerant recovery unit being used to
avoid compressor oil loss. Loss of oil could result in compressor
damage.
NOTE
Venting tetrafluoroethane refrigerant into the atmosphere rather than
recovering it is subject to pending EPA restrictions. Venting the
refrigerant may be a violation of public law and subject to severe
penalties.
(2) Open service manifold pressure and compound gauge valves.
(3) Open service manifold charge valve. Operate recovery unit until all refrigerant has been removed from system.
(4) Close service manifold valves.
(5) Shut-down refrigerant recovery unit.
5-11
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