EQUIPMENT CHARACTERISTICS, CAPABILITIES, AND FEATURES

TM 9-4120-428-14

OPERATOR'S, UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE

AIR CONDITIONER, HORIZONTAL, COMPACT

(NSN 4120-01-502-1319)

EQUIPMENT DESCRIPTION AND DATA

EQUIPMENT CHARACTERISTICS, CAPABILITIES, AND FEATURES

The Keco Industries, Inc. model F9000H-4SPFI Air Conditioner is designed to circulate, filter, and cool or heat air in the

room or enclosure in which it is installed. The air conditioner will control and maintain enclosure temperature for efficient

operation of electronic equipment and personnel comfort over a wide range of weather conditions.

Table 1. Location and Description of Major Components.

COMPONENT

DESCRIPTION

Fabric Cover

Protects back or exposed side of the unit during periods of shut down. Must

be rolled up when operating in the cool mode or when fresh (outside) air is

being used in any mode.

Conditioned Air Supply Louver

Provides directional control of conditioned air.

Conditioned (Evaporator) Air Fan

Draws the room or enclosure air in over the filter and blow it out over the

evaporator and heaters to supply conditioned air. The speed is adjustable. See

Item 16.

Temperature Selector (Thermostat) Sensing

Senses the temperature of the room or enclosure air as it is drawn back into

Bulb

the air conditioner. This bulb is part of the TEMPERATURE SELECTOR

control (thermostat) that is located on the control panel module.

Conditioned Air Filter

Filters room or enclosure air as it is re-circulated.

Conditioned Air Fan Motor

Drives the conditioned air fan.

Return Air Louver with Filter Clamps

The re-circulated air from the room or enclosure is drawn in through this

louver. The conditioned air filter, item 5, is mounted on clips on the inside of

this louver.

Junction Box and Control Panel Module

Contains major unit controls. See items 9 thru 16 for a description of some of

these controls.

Control Circuit Breaker

Protects control circuit.

Input Power Receptacle (Primary Location)

Connection point for main input power cable. See item 37 for Input Power

Receptacle (Alternate Location).

Control Panel Module

Contains switches and controls for operating the air conditioner. See items 13,

14, 16, and 17 for a description of these switches and controls.

High Refrigerant Pressure Cutout Switch

This switch is factory set to shut the compressor off if the refrigerant

discharge line pressure rises to 470 to 490 psig (33.04 to 34.45 kg/cm2).

Note: This switch must be reset by hand after the pressure drops to 320 psig

(22.50 kg/cm2)

Compressor Circuit Breaker

Protects the compressor.

Mode Selector Switch

Allows selection of unit operating mode.

Low Refrigerant Pressure Cutout Switch

This switch is factory set to shut the compressor off if the refrigerant suction

line pressure drops to 10 to 20 psig (0.703 to 1.406 kg/cm2. This switch must

be hand reset after the pressure rises above 40 psig (2.812 kg/cm2).

Evaporator Fan Speed

Allows selection of HIGH or LOW unit conditioned air (evaporator) fan

speed.

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