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TM 5-4120-361-14
NOTE:
NOTE:
STEP 1.
STEP 2.
STEP 3.
STEPS 1,2,3 AND 4 APPLY ONLY TO A COMPLETELY
EVACUATED SYSTEM, A FULLY CHARGED SYSTEM CON-
TAINS 11.5 ± .5 POUNDS (5.23 ± .23 KG) OF REFRIGERANT
22. TO ADD REFRIGERANT TO AN INCOMPLETELY
CHARGED SYSTEM, REFER TO STEP 5.
WHENEVER AVAILABLE, USE RECYCLED REFRIGERANT
FOR CHARGING THE REFRIGERATION SYSTEM.
REMOVE SERVICE VALVE ACCESS COVER. REMOVE
VALVE CAPS AND LOOSELY CONNECT CHARGING MANI-
FOLD SERVICE LINES TO AIR CONDITIONER CHARGING
VALVES. ATTACH LINE FROM REFRIGERANT DRUM TO
MANIFOLD.
OPEN REFRIGERANT DRUM VALVE AND MANIFOLD
VALVES AND PURGE AIR BOTH FROM MANIFOLD AND
SERVICE LINES. TIGHTEN SERVICE LINE CONNECTIONS
AT CHARGING VALVES AND CLOSE LOW SIDE VALVE ON
CHARGING MANIFOLD.
POSITION REFRIGERANT DRUM UPSIDE DOWN ON A
SCALE. OPEN AIR CONDITIONER HIGH PRESSURE
CHARGING VALVE AND CHARGE SYSTEM UNTIL SCALE
INDICATES A FULL CHARGE, THEN CLOSE BOTH HIGH
PRESSURE CHARGING VALVE AND DRUM VALVE. DIS-
CONNECT CHARGING LINES UNLESS. DUE TO PRESSURE
EQUALIZATION IN DRUM AND AIR CONDITIONER SYS-
TEM, A FULL CHARGE IS NOT MEASURED. THEN PRO-
CEED TO STEP 4.
Figure 6-2. Charging refrigerant system (Sheet 1 of 2)
6-4
Change 4
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