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TM 5-4120-341-13
TO 35E9-256-1
ACTION
REMARKS
LOCATION/lTEM
Close refrigerant drum valve and suction
h.
discharge valves.
Carefully loosen connection at suction discharge
i.
valve to release trapped pressure.
Disconnect charging line and install valve cap on
i.
suction discharge valve.
Operate air conditioner in cooling mode for 15
k.
minutes.
Check sight glass for gas bubbles. If gas bubbles
/.
are present, add additional refrigerant (steps m.
through v.)
Place the same refrigerant drum on a scale in an
m.
upright position on a scale.
Remove valve cap from suction service valve.
n.
Loosely connect charging line to suction service
o.
valve.
Partially open refrigerant drum valve and purge air
p.
from charging line.
Close refrigerant drum valve and tighten connec-
q.
tion at suction service valve.
CAUTION
Add refrigerant slowly to avoid slugging at the compressor.
With air conditioner operating in the cooling mode,
r.
open discharge valve and refrigerant drum valve
and add approximately one (1) ounce per minute of
refrigerant. Constantly observe sight glass and
when bubbles disappear close suction service
valve.
Close refrigerant drum valve.
s.
Carefully loosen charging line to release trapped
t.
pressure.
Disconnect charging line and install valve cap on
u.
suction service valve.
Change 3 5 - 9

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