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TM 9-4110-257-14
b.
Thermometer (REFRIGERATOR TEMPERATURE) Indicates More Than 15°F (7°C) Above Remote Bulb
Thermostat (TEMPERATURE CONTROL) Setting.
IS THE REFRIGERATION UNIT RUNNING?
YES
NO
CHECK READINGS ON PRESSURE AND COMPOUND
START REFRIGERATION UNIT (PARA 2-5).
GAGES. IF READINGS ARE ABOVE OR BELOW
NORMAL OPERATING RANGE, SEE APPROPRIATE
TROUBLE SHOOTING PROCEDURE. IF THE
INDICATED TEMPERATURE IS STILL NOT WITHIN
RANGE, NOTIFY UNIT MAINTENANCE.
c.
Pressure Gage (DISCHARGE PRESSURE) Indicates Above 250 psi (1725 kPa). At start up and/or operation in high
ambient temperatures, pressures above 250 psi (1725 kPa) are possible.
IS THE CONDENSER GUARD OBSTRUCTED?
YES
NO
SHUT DOWN THE REFRIGERATION UNIT (PARA 2-7)
NOTIFY UNIT MAINTENANCE.
AND CLEAR THE OBSTRUCTION. IF OBSTRUCTION
CANNOT BE CLEARED, NOTIFY UNIT
MAINTENANCE TO CLEAR IT.
d.
Pressure Gage (DISCHARGE PRESSURE) Indicates Below 165 psi (1138.5 kPa). During operation in low ambient
temperatures, pressures below 165 psi (1.138.5 kPa) are possible.
NOTIFY UNIT MAINTENANCE.
e.
Compound Gage (SUCTION PRESSURE) Indicates Above 15 psi (103.5 kPa). At start up and/or operation in high
ambient temperatures, pressures above 15 psi (103.5 kPa) are possible.
IS REFRIGERATOR ENCLOSURE DOOR OPEN?
YES
NO
CLOSE REFRIGERATOR ENCLOSURE DOOR.
NOTIFY UNIT MAINTENANCE.
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