OPERATION UNDER UNUSUAL CONDITIONS - TM-9-4120-430-140047

TM 9-4120-430-14

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AIR CONDITIONER, COMPACT, HORIZONTAL

OPERATION UNDER UNUSUAL CONDITIONS

INITIAL SETUP

References

WP 0011 00 (PMCS)

Equipment Condition

Mode selector switch in OFF position

Correct voltage and phase power source (208 volts, three phase, 50/60 Hz, S9160-18KH-3 or (230 volts, single

phase, 50/60 Hz for S9150-18KH-1 unit)

Perform operator PMCS (WP 0010 00) as necessary

General Installation Site Requirements

A relatively level surface.

An unobstructed flow of air from outside the area.

An unobstructed flow of air from inside the conditioned area.

An unobstructed flow of air from outside the conditioned area to the fresh air intake.

NOTE

The air conditioner can be equipped for operation in chemical biological radiological (CBR)

environment by connecting filtering equipment to the rectangular covered opening to the

lower left of the condenser guard in the rear of the unit.

OPERATION IN EXTREME COLD

General

The air conditioner is designed to operate on the heating cycle in ambient temperatures as low as 50 degrees F (-45

degrees C) and on cooling cycle with 55 degrees F (12.8 degrees C) air entering the condenser and 70 degrees F (21

degrees C) air entering the evaporator.

Before Operation

Before starting operation, be sure canvas cover is rolled up and secured. Clear all ice and snow from openings. Be sure

all dampers are in operating condition.

After Operation

Roll down and snap on canvas cover over condenser intake and outlet.

CAUTION

Do not disturb wiring during cold weather unless absolutely necessary. Cold

temperatures make wiring and insulation brittle and easily broken.

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