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Page Title:
REFRIGERATION SYSTEM SERVICING - (CHARGING). - continued |
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 TM 5-4120-386-14
5-15. REFRIGERATION SYSTEM SERVICING - ( CHARGING) -Continued.
LOCATION/ITEM
ACTION
REMARKS
If the 2.3 pounds (1.04 kg)
o.
full charge was obtained, skip
steps o through r. If the.
system pressure equalized
prior to obtaining a full
charge of 2.3 pounds (1.04 kg)
proceed with step p.
Switch the refrigerant cylinder
p.
valve, the low (suction) pressure
charging manifold valve, and the
low (suction) pressure service
valve on the air conditioner.
Open the refrigerant cylinder
q.
valve, the low (suction) pressure
charging manifold valve, and the
low (suction) pressure service
valve on the air conditioner.
r.
Monitor the weight of the refrig-
erant cylinder as the air condi-
tioner compressor pulls addition-
al refrigerant gas into the
system until the full 2.3 pounds
(1.04 kg) charge is obtained.
When the system is fully charged
immediately close the refrigerant
cylinder valve.
s.
Run the air conditioner in COOL
mode with temperature control
thermostat in full COOLER posi-
tion for 15 minutes.
NOTE
Do not skip the next step.
t.
After 15 minutes, observe the
liquid sight indicator (sight
glass) on left rear of unit.
Green center means the
refrigerant moisture
content is acceptable.
Yellow center means there is
too much moisture in the sys-
tem. It must be discharged,
evacuated and charged again.
5-53
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