Figure 6-1. Discharging and purging refrigerant system.

TM 5-4120-352-14

TS 4120-352-14/6-1

TO DISCHARGE SYSTEM:

TO PURGE SYSTEM:

REMOVE ACCESS COVER.

REMOVE HIGH PRESSURE CHARGING VALVE CAP.

REMOVE LOW PRESSURE CHARGING VALVE

CONNECT VALVE TO A CYLINDER OF DRY NITROGEN

CAP. ATTACH A SUITABLE HOSE TO

ATTACH A SUITABLE DISCHARGE HOSE TO

CHARGING VALVE AND DISCHARGE

LOW PRESSURE CHARGING VALVE.

REFRIGERANT INTO A SAFE AREA.

OPEN NITROGEN VALVE AND ALLOW NITROGEN TO

FLOW THROUGH SYSTEM UNTIL ALL MOISTURE IS

NOTE :

FORCED OUT. CLOSE NITROGEN CYLINDER VALVE.

TO PREVENT EXCESS LOSS OF OIL,

CONNECT A VACUUM PUMP TO HIGH AND LOW

DISCHARGE SYSTEM SLOWLY OVER A

PRESSURE CHARGING VALVES AND HOLD A

29.0" Hg VACUUM FOR EIGHT HOURS.

PERIOD OF TWO HOURS.

WARNING:

AVOID BODILY CONTACT WITH LIQUID REFRIGERANT AND

AVOID INHALING REFRIGERANT GAS. BE ESPECIALLY

CAREFUL THAT REFRIGERANT 22 DOES NOT COME IN

CONTACT WITH EYES. IN CASE OF REFRIGERANT LEAKS,

VENTILATE AREA IMMEDIATELY.

Figure 6-1. Discharging and purging refrigerant system.

6-2