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TM 9-4120-367-14
TM 07592B-14/1
Section IV. OPERATION UNDER UNUSUAL CONDITIONS
NOTE
The air conditioner can be equipped for operation in chemical-biological-radiolog-
ical (CBR) environment by connecting filtering equipment to the rectangular
covered opening at the lower left side of the rear surface of the unit.
INITIAL SETUP
Applicable Configurations:
Special Environmental Conditions:
All
Below 0°F (-18 °C)
Test Equipment:
General Safety Instructions:
None
See WARNING page
Special Tools:
References:
None
None
Materials/Parts:
Troubleshooting References:
None
None
Equipment Descriptions:
Personnel Required:
Power ON; installed in shelter
Operator
Location/Item
Action
Remarks
General
The air conditioner is designed to operate on the heating cycle
in ambient temperatures as low as minus50° F (-45.5 °C) and
on cooling cycle with 0° F (-18 °C) air entering the condenser
and 70° F (21 °C) air entering the evaporator.
Do not disturb wiring during cold weather, unless
absolutely necessary. Cold temperatures make
wiring and insulation brittle and easy to break.
Before Operation
a.
Before starting on cooling cycle, be sure cover is rolled
from condenser air intake and discharge.
b. Clear all ice and snow from openings.
c.
Be sure all dampers are in operating condition.
d. To start unit on COOL mode at 0°F (-18°C) ambient (min.
operating temp.) jumper LPCO switch. Refer to para-
graph 3.7.
After Operation
Install cover over condenser air intake and discharge openings.
2-13
2.8 OPERATION IN EXTREME COLD. This task covers operation in extreme cold.
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