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 TM 55-1925-273-10-2
0128 00
5.
CLOSE the DEHYDRATOR BY-PASS valve (figure 1, item 6).
6.
OPEN the DEHYDRATOR INLET valve (figure 1, item 7).
7.
OPEN the RELIEF VALVE BY-PASS valve (figure 1, item 8).
8.
CLOSE the PURGE valve (figure 1, item 9).
9.
CLOSE the CHARGE AND DRAIN valve (figure 1, item 10).
10. OPEN the WATER REGULATOR VALVE ACTUATING LINE valve (figure 1, item 11).
ALIGN REFRIGERANT PIPING SYSTEM
! 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.
! CAUTION
To prevent oil return problems and possible damage to the compressor, do not operate both
condensing units at the same time with RFSS-13, LIQUID LINE CRSVR CO and RFSS-20,
SUCT LINE CRSVR COV valves OPEN.
Align the refrigerant piping system according to the following procedure:
1.
CLOSE RFSS-13, LIQUID LINE CRSVR CO (figure 4, item 1).
2.
OPEN RFSS-8, EQL LINE (figure 4, item 2) or RFSS-9, EQL LINE (figure 4, item 3).
3.
OPEN RFSS-11, TXV/STNR/LLSV COV (figure 4, item 4) and RFSS-12, TXV/STNR/LLSV COV (figure 4, item 5).
START COMPRESSOR
! CAUTION
OPEN the COMPRESSION SUCTION valve slowly to prevent rapid pumping down of the
suction pressure side, which could cause oil foaming and result in pumping of oil from the com-
pressor crankcase. Damage to the compressor could result from lack of lubrication.
! CAUTION
Condenser water temperature should read in the NORMAL operating range.
1.
Place the power switch (figure 1, item 1) to the ON position.
2.
OPEN the COMPRESSOR SUCTION valve (figure 1, item 3) approximately one full turn.
3.
Immediately, continue to slowly open the COMPRESSION SUCTION valve (figure 1, item 3) as suction pressure is
reduced.
0128 00-8
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