STOPPING THE AIR CONDITIONER. - TM-5-4120-386-140023

TM 5-4120-386-14

2-5. STARTING AND OPERATING INSTRUCTIONS FOR COOLING - Continued.

NOTE

Cool air is denser than warm air so it has a tendency to flow downward. To

offset this tendency, it is often advisable to adjust the evaporator outlet

louvers to direct the cool air slightly upward.

c. Cooling With Fresh Air.

(1) When the vent damper door is open to admit fresh air, partially

close the evaporator inlet louver to balance the incoming air.

(2) Keep the vent damper door closed during heavy rain.

2-6. STOPPING THE AIR CONDITIONER.

a. Position the mode selector switch to OFF.

b. Close the evaporator inlet louver blades by pushing tabs down.

c. Close the ventilation damper by turning the ventilation damper actuator.

d. If a shutdown is to be for an extended period, cover condenser side of unit with fabric

cover and discomect the power cable.

2-7. STARTING AND OPERATING INSTRUCTIONS FOR HEATING.

a. Starting

(1) Perform the preventive maintenance checks and services (Table 2-1).

(2) Check for the correct voltage (208 volts, 50/60 Hz)

(3) Roll up and tie fabric cover.

(4) Open the evaporator inlet louver by moving the tabs up.

(5) Open the evaporator outlet louvers.

(6) Turn the ventilation damper actuator to close the damper door.

(7) Turn the temperature selector switch to COOLER (lowest heating

position - counter clockwise).

(8) Position the control circuit breaker to ON.

(9) Position the mode selector switch to LOW HEAT. Position it to

HIGH HEAT if more heat is wanted. (Wait 3 to 5 minutes for heat.)

b. Heating Operation. After starting the air conditioner in the heating mode, adjust it

as follows:

(1) Position the mode selector switch to HIGH HEAT or LOW HEAT as

desired.

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