TB-9-2320-279-13-1
TECHNICAL BULLETIN; AIR CONDITIONING SYSTEM
OPERATOR’S, UNIT AND DIRECT SUPPORT MAINTENANCE MANUAL, INSTALLATION INSTRUCTIONS, AND REPAIR PARTS AND SPECIAL TOOLS LISTS
DECEMBER 2005
TB-9-2320-279-13-1 - Page 19 of 524
TB 9-2320-279-13-1
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OPERATOR'S CONTROLS AND INDICATORS
DRAFT
This work package shows location and describes use of controls and indicators used to operate the HEMTT AC
system.
Operator/crew must become thoroughly familiar with contents of this work package before attempting to
operate the HEMTT AC system.
Know the location and proper use of every control and indicator before operating the HEMTT AC system.
1. Fan Control Switch.
Four-position switch used to turn the blower motor ON and OFF, and control
blower motor speed.
When switch is in fully counter-clockwise position, the blower motor is OFF.
As the
switch is rotated clockwise, blower motor is turned on, and blower motor speed increases.
2. Temperature Control Switch.
Controls temperature of cold air entering cab.
Temperature control
switch is OFF when in O position.
As temperature control switch is turned clockwise, temperature of
cold air entering cab decreases.
3. Heater Cable.
Controls amount of hot air entering cab.
Amount of hot air entering cab increases as
heater cable is pulled out and decreases as heater cable is pushed in.
4. AC Defrost Cable.
Controls amount of hot air blown on windshield.
Amount of air blown on windshield
increases as AC defrost cable is pulled out and decreases as AC defrost cable is pushed in.
5. AC Cable.
Controls amount of cold air entering cab.
Amount of cold air entering cab increases as AC
cable is pulled out and decreases as AC cable is pushed in.
6. Louvers.
Louvers are used to direct airflow.
Adjust louvers for desired airflow.
HEMAC112
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