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 TM 55-1905-223-24-18-1
System is fully charged when operating pressures are between 23-44 psig
(7)
for suction side and 120-135 psig for discharge (high pressure) side.
Check sight glass (2) to ensure no bubbles appear. If bubbles appear,
(8)
crack suction side handwheel to add more refrigerant until bubbles do not
appear in sight glass.
Weigh the R-12 supply container and subtract this weight from previously
(9)
recorded valve to determine amount of R-12 refrigerant used.
If in excess of unit data plate information, turn off compressor (3).
(10)
Shut R-12 supply container valve and the gauge manifold suction side
(11)
handwheel.
Remove middle hoseline to supply container.
(12)
Momentarily crack the suction side handwheel to vent refrigerant to
(13)
atmosphere.
Start compressor, allow to run 5 minutes and check operating pressures and
(14)
sight glass (2) proper indications.
When charging is complete, stop compressor (3) and remove gauge manifold
(15)
hoselines.
Install protective caps on service valve stems.
(16)
Install condenser unit and base (3) in cabinet.
g.
Install mount bolt at center front of base.
h.
I n s t a l l grill in front of cabinet by aligning top of grill in cabinet then
i.
pushing up and in at bottom of unit.
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