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ARMY TM 9-4120-381-14
NAVY EE-000-CA-MMA-010/7053-AC
AIR FORCE TO 35E9-136-31
2-7.
OPERATING PROCEDURE.
CAUTION
Before operating the air conditioner, ensure that MODE SELECT SWITCH is in the
OFF position and that ac power has been applied to air conditioner for at least 30
minutes. This is necessary so that the crankcase heater has sufficient time to
operate. Heating the compressor is necessary to remove all liquid refrigerant from
the crankcase, thereby eliminating the possibility of damage during starting
operations at low ambient temperatures.
a.
Before Operation.
(1)
Perform the before (B) operator preventive maintenance checks and services listed in Table 2-1.
(2)
Check to see that the power cable has been connected from a source of 208 V ac, 3-phase, 50/60
hertz power to the input power connector on the unit.
(3)
Check that the following air inlet and outlet openings are clear (Figure 2-2):
· Return air inlet
· Fresh air inlet
· Supply air outlet
· Condenser air outlet
· Condenser air inlet
Figure 2-2. Air Inlets and Outlets
b.
General Information.
(1)
During warm or cold weather (air conditioner operation in AUTO mode):
· Limit traffic through doors as much as possible.
· Keep doors and windows tightly closed.
(2)
During cold weather. Adjust shades, blinds, etc., (when applicable); admit sunlight during day. Close
them at night.
(3)
During hot weather. Adjust shades, blinds, etc., (when applicable); block out sunlight during day.
2-6
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