b. Run the pumpout compressor for 30 minutes then close valve 7.
c. Turn off the pumpout compressor.
3. Remove any re maining refrigera nt.
a. Turn on water pumps throu gh the use of the Control T es t Pumpdown.
b. Turn on pumpout conden s er wat er.
c. Place valves in the follow ing positions:
d. Run the pumpout compressor until the machine pressure reaches 65 psig (448 kPa) for
HCFC-22, 30 psig ( 207 kPa) for HFC-13 4a, then shut of f the pumpout. War m condenser
water will boil off any ent r ap ped liquid refriger an t and machine pressur e wi ll rise.
e. When the pressure rises to 70 psig (483 kPa) for HCFC-22, 40 psig (276 kPa) for
HFC-134a, turn on the pu m pou t compressor until th e pressure again reac hes 65 psig
Valve 1a 1b 2 3 4 5 6 7 8 11 12 13 14
Condition CC CC
Valve 1a 1b 2 3 4 5 6 7 8 11 12 13 14
Condition CCCC