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 TM 55-1925-273-10-1
0082 00
a.
Main power disconnect switches (figure 19, item 11)
b.
Power ON/OFF switches (figure 19, item 12)
6.
Start the standby reefer condenser unit by completing the following actions:
a.
OPEN the compressor suction valve (figure 19, item 7) one full turn.
b.
Set the following switches to the ON position:
(1)
Main power disconnect switches (figure 19, item 11)
(2)
Power ON/OFF switches (figure 19, item 12)
! CAUTION
Open the compressor suction valves slowly to prevent rapid pumping down of suction pressure
Damage to the condensers could result from lack of lubrication.
c.
Slowly, continue to OPEN the compressor suction valves (figure 19, item 7) as suction pressure decreases.
d.
Verify that the condenser water temperature gauge remain in the normal range.
e.
Verify that the following gauges read in the normal operating range:
(1)
Liquid line temperature gauge
(2)
Suction pressure gauge
(3)
Suction temperature gauge
(4)
Discharge pressure gauge
(5)
Oil pressure gauge
! CAUTION
Oil pressure must be a minimum of 16 PSI (1.10 bar) above suction pressure, or damage to the
condenser could result from lack of lubrication.
f.
Observe condenser operation for 5 minutes.
! CAUTION
Liquid refrigerant returning to the condenser is indicated by a sudden drop in suction tempera-
ture and a rapid fluctuation in suction pressure. If the suction temperature and oil pressure do not
stabilize, or if the condenser develops a knock, immediately stop condenser by placing power
disconnect ON/OFF switch in the OFF position.
g.
Slowly adjust the compressor suction valve (figure 19, item 7) until proper suction pressure of 2.3 to 2.4 PSI (0.16-
0.17 bar) is indicated on the suction gauge.
0082 00-25
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