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 TM 55-1925-273-10-2
0129 00
SPLIT PLANT TO NORMAL OPERATION
1.
Align general service piping. OPEN the following valves for the condensing unit being started:
a.
Air conditioning condensing unit 1:
(1)
GS-33, A/C COND No. 1 SPLY (figure 3, item 1)
(2)
GS-37, WTR RGLTR COV (figure 3, item 2)
(3)
GS-70, WTR RGLTR COV (figure 3, item 3)
b.
Air conditioning condensing unit 2:
(1)
GS-34, A/C COND No. 2 SPLY (figure 3, item 4)
(2)
GS-36, WTR RGLTR COV (figure 3, item 5)
(3)
GS-69, WTR RGLTR COV (figure 3, item 6)
2.
Align condenser unit piping:
a.
OPEN COMPRESSOR DISCHARGE valve (figure 1, item 2).
b.
OPEN COMPRESSOR SUCTION valve (figure 1, item 3). Use refrigeration ratchet wrench
c.
OPEN CONDENSER OUTLET valve (figure 1, item 4).
d.
OPEN DEHYDRATOR OUTLET valve (figure 1, item 5).
e.
CLOSE DEHYDRATOR BY-PASS valve (figure 1, item 6).
f.
OPEN DEHYDRATOR INLET valve (figure 1, item 1).
g.
OPEN RELIEF VALVE BY-PASS valve (figure 1, item 7). Use refrigeration ratchet wrench
h.
CLOSE PURGE valve (figure 1, item 8). Use refrigeration ratchet wrench.
i.
CLOSE CHARGE AND DRAIN valve (figure 1, item 9).
j.
OPEN WATER REGULATOR VALVE ACTUATING LINE valve (figure 1, item 10).
3.
Align air conditioning piping:
! CAUTION
If the condenser water cooling system has been drained, have unit maintenance purge the air
from the system. Air in the cooling system will reduce cooling efficiency and could result in
damage to the compressor.
Before starting, the compressor crankcase heater must be energized for 24 hours. Energizing the
heater for 24 hours should drive all refrigerant from the oil.
To prevent oil return problems and possible damage to the compressor, do not operate both
condensing units at the same time with RFAC-39, LIQUID LINE CRSVR CO. and RFAC41,
SUCT LINE CRSVR COV. valves OPEN.
a.
Close RFAC-39, LIQUID LINE CRSVR CO. (figure 2, item 1).
0129 00-4
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