| Tweet |
Custom Search
|
|
|
||
 TM 55-1925-273-10-1
0082 00
b.
Verify that the operating reefer condenser unit water temperature gauge remains in the NORMAL range.
c.
Verify that the following gauges read in the NORMAL operating range for the operating reefer condenser unit:
(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
condensers could result from lack of lubrication.
d.
Observe the condenser operating 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.
e.
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.
SHIFTING REFRIGERATION PLANTS
NOTE
The following procedure provides instructions for securing one reefer condenser and shifting to
another.
1.
CLOSE the dehydrator inlet valve (figure 19, item 4) at the reefer condensing unit being secured.
2.
Allow the reefer condenser being secured to operate until it is shut down automatically by the suction pressure switch.
WARNING
Injury to personnel could will result if the discharge service valve is not opened before
condenser is started.
3.
CLOSE the compressor suction valve (figure 19, item 7) for the reefer condensing unit being secured.
4.
CLOSE the compressor discharge valve (figure 19, item 1) for the reefer condensing unit being secured.
5.
Set the following switches to OFF on the reefer condenser unit being secured:
0082 00-24
|
||
|
||
