TM 9-4110-258-13
SECTION III OPERATION UNDER USUAL CONDITIONS
2.4
ASSEMBLY AND PREPARATION FOR USE.
The refrigeration unit requires specialized unpacking, installation, and power connection procedures.
Notify unit
maintenance for installation.
2.5
STARTUP PROCEDURES.
(See fig. 2-4.)
CAUTION
Operating the refrigeration unit with the service valves improperly set will damage the equipment.
Do not operate unless you are sure it has been properly set up for operation. If you are not sure
that service valves are properly set, notify unit maintenance.
a. Be sure the refrigeration unit is connected to an active source of 208/230 Vac, 3 phase, 50/60 Hz electric power.
NOTE
Push switches in the side condenser door frames will prevent the refrigeration unit from operating
if the side doors are open.
b. Be sure both side condenser doors (1) are closed and secured.
c. Set the remote bulb thermostat (2) (TEMPERATURE CONTROL) to the desired refrigerator enclosure
temperature.
d. Place the circuit breaker (3) handle in the ON position.
e. Place the toggle switch (4) (START/RUN, OFF) handle in the START/RUN position.
2.6
OPERATOR CHECKS.
(See fig. 2-4.)
a. Check the thermometer (5) (REFRIGERATION TEMPERATURE) periodically to be sure it is within 15F (7C)
of the temperature set on the remote bulb thermostat (TEMPERATURE CONTROL).
b. Check the pressure gauge (6) (DISCHARGE PRESSURE) periodically to be sure it is between 165 and 250 psi
(1138.5 and 1725 kPa).
c. Check the compound gauge (7) (SUCTION PRESSURE) periodically to be sure it is between 0 and 15 psi (0 and
103.5 kPa).
2-19
