| Tweet |
Custom Search
|
|
|
||
 TM 55-1925-273-10-1
0082 00
! 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.
REFRIGERATION
NOTE
During initial loading of the walk-in freezer and chill box, it may be necessary to operate both
condensers to ensure timely cool down of perishable items, however normal operation is for one
condenser to operate at a time.
If the refrigerator thermometer reads below 37 F (2.78 C) or above 43 F (6.11 C) and/or the
freezer thermometer reads below 5 F (-15 C) or above 0 F (-17.78 C), refer to unit mainte-
nance. It is important that the units not be loaded with perishables until the inside temperature of
the walk-in units stabilize at the correct temperature.
1.
Verify that the thermostats are set as follows:
a.
Chill room between 33 F (0.56 C) and 37 F (2.78 C).
b.
Freeze room between 4 F (-20 C) and 0 F (-17.78 C).
! CAUTION
Align the condenser cooling water piping system before starting the refrigeration plant, or dam-
age to the plant can occur.
2.
Align the ship stores refrigeration (walk-in freezer and refrigerator) room condenser cooling water piping system as
follows:
! CAUTION
The condenser water cooling system must be purged of all air. Air in the cooling system will
reduce heat exchange efficiency and can result in damage to the condenser.
a.
For reefer condenser 1:
(1)
OPEN GS-38, RETR COND No. 1 SPLY (figure 18, item 10), reefer condenser 1 supply.
0082 00-19
|
||
|
||
