Section II. OPERATION UNDER USUAL CONDITIONS

TM 32-5410-221-14&P

Table 3-1. Operator's Controls - Continued

Controls, indicators, or connectors

Description

Function

CB11 receptacle equipment rack No. 4

Provides ac power to equipment rack No. 4.

CB2, CB4, CB6 air conditioner

50 amperes

Provides 220 Vac power for air conditioner.

CB8 front wall road

15 amperes

Provides ac power to receptacles on roadside and front wall.

CB10 roadside equipment receptacles

15 amperes

Provides ac power to receptacles on roadside.

CB12 receptacle equipment rack No. 5

15 amperes

Provides ac power to equipment rack No. 5.

Section II. OPERATION UNDER USUAL CONDITIONS

For Trane model air conditioners,

3-3

ENERGIZING AC CIRCUITS.

step d will energize the crankcase

heater to vaporize any refrigerant

CAUTION

present in the oil.

Failure to perform step 3-3a may

result in a power source overload

d. Plug power cord into No. 2 receptacle (figure E-

due to initial current drain.

10).

e. Jog fan motor by turning selector switch to

a. Set all circuit breakers and electrical switches to

VENTILATE and immediately back to OFF. This checks

OFF.

for binding or interference in the fan.

b. Activate main power source. Refer to the

f. Set temperature control to desired temperature.

applicable manual for generator operation. Refer to

g. Set selector switch to COOL, LO HEAT, HIGH

local directives for local or commercial power.

HEAT, or VENTILATE for desired operation.

c. Set shelter MAIN POWER SWITCH to ON.

d. Set LIGHTS circuit breaker No. 3 to ON to

(1) For heating or cooling with 100 percent

energize both incandescent and blackout light circuits.

recirculated air, close damper door and open intake

e. Set each light fixture toggle switch to ON to turn

grille damper.

each incandescent light on.

(2) For heating or cooling with fresh makeup

f. Raise blackout limit switch arm to turn two

air, open damper door and partially close intake grille

damper.

blackout lights on and two incandescent lights off. Use

hasp to hold arm up.

(3) For heating or cooling with fresh makeup

air drawn through chemical, biological, and radiological

g. Set circuit breakers Nos. 1, 2, 5 and 7 through

filter unit when outside air is contaminated, close

11 to ON to energize convenience outlets and

damper door and partially close intake grille damper.

equipment power receptacles.

(4) For ventilating operation, open damper

h. Set AIR CONDITIONER circuit breaker to ON to

door and close intake grille damper.

energize air conditioner receptacle.

3-4

AIR CONDITIONER OPERATION. Operate the

h. To stop the air conditioner, proceed as follows:

air conditioner as follows:

(1) Set selector switch to OFF.

a. Ensure that air conditioner external canvas

CAUTION

cover is rolled up and secured with tiedown snap.

b. Check to see that internal and external air flow

For Trane model air conditioners,

vent openings are free from obstructions.

step (2) will cause refrigerant to

c. Set selector switch to OFF.

condensate in the crankcase and mix

with the oil.

NOTE

3-2