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TM5-4120-387-14
Section Ill OPERATION UNDER USUAL CONDITIONS
2-5. ASSEMBLY AND PREPARATION FOR USE
Services of Organizational Maintenance should be employed for original unpacking,
assembly installation, and preparation for use.
See paragraphs 4-2 thru 4-9.
2-6. INITIAL ADJUSTMENTS AND CHECKS
a.
Inspect all covers, panels, grilles, and screens for loose mounting, ob-
structions, or shipping damage.
Report any deficiencies to organizat
nance.
b.
Perform the preventive maintenance checks and services listed
2-7. GENERAL OPERATING PROCEDURES
a.
Before operation
ional mainte-
in table 2-1.
(1) Check to see that power cable has been connected to a source of 115
volt, single phase, 3 wire, 50/60 hertz power, and to the input power connector on
the unit.
Do not perform the operational check in COOL mode until input
power has been supplied to the unit for at least four hours.
Liquid refrigerant tends to migrate into the compressor
crankcase and cylinders during periods when the compressor
heater is not operating.
Under moderate climatic conditions,
the compressor heater will normally “boil” all liquid
refrigerant out within a four hour period.
If the air
conditioner has been exposed to below freezing temperatures
without input power, an eight hour warmup period is
recommended.
2-15
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