OPERATION WITH FRESH AIR

TM 9-4120-428-14

0005 00

Operation in Cooling Mode - Continued

8. When the temperature selector switch begins cycling the bypass circuit, make any necessary adjustment to it until the

desired shelter temperature is maintained. Allow sufficient time for the bypass circuit to cycle off and on between

adjustments.

NOTE

Cold air is denser than warm air, so it has a tendency to fall. To obtain comfortable

temperatures near the upper parts of the room, it is often advisable to adjust the

evaporator discharge louver blades to direct the air slightly upward.

9. Adjust the evaporator discharge louver blades to direct the airflow as desired.

OPERATION WITH FRESH AIR

1. Roll up and tie canvas cover if it is rolled down and secured.

2. Open the damper door by turning the ventilation damper actuator.

3. Partially close the evaporator intake louver blades.

STOPPING THE AIR CONDITIONER

1. Position the mode selector switch to OFF.

2. Close the evaporator intake louver blades by pushing tabs down.

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

4. If a shutdown is to be for an extended period, cover condenser side of unit with canvas cover and disconnect the power

cable.

DECALS AND IDENTIFICATION PLATES

A number of identification plates are provided on the exterior of the air conditioner cabinet. These plates are located on, or

adjacent to, the control or device to which they apply. Refer to the following list and illustration for each identification plate

location.

High-Pressure Charging Valve Decal

Locates charging valve.

Low-Pressure Charging Valve Decal

Locates charging valve.

Refrigeration Fluid Diagram Plate

Indicates refrigeration components.

Schematic Diagram

Indicates electrical components and wiring.

Vent Closed Decal

Indicates fresh air vent position.

Vent Open Decal

Indicates fresh air vent position.

Power Input Connector Plate

Locates input power connection.

CAUTION Grounding Decal

Grounding stud information.

Reset High Pressure Decal

Indicates location of high-pressure reset control.

Cold Weather Operation Decal

Indicates instructions for condenser louver

adjustments for cold weather operation.

Danger Plate

Warning instructions.

Reset Low Pressure Decal

Indicates location of low-pressure reset control.

Military Unit ID Plate

Indicates military model and Serial Number.

0005 00-6