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Page Title:
Starting And Operating Instructions For Cooling |
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 TM 9-4120-428-14
0005 00
Starting And Operating Instructions For Cooling - Continued
C
CONDITIONED AIR
L
V
O
E
S
N
SUPPLY LOUVER
E
T
D
FRESH AIR
DAMPER CONTROL
RETURN AIR
O
V
P
E
SUPPLY LOUVER
E
N
N
T
OPERATING LEVERS
5. Check that the air conditioner is connected to the proper power source (208 volts, 3 phase, 400 hertz) and is properly
grounded. Power must be connected for at least four hours prior to operation (eight hours in sub-freezing climates).
Notify Unit Maintenance if you cannot confirm this.
INPUT POWER RECEPTACLE
(ALTERNATE LOCATION)
INPUT POWER RECEPTACLE
PRIMARY LOCATION
6. Turn the temperature selector switch to WARMER.
7. Position the CONTROL CIRCUIT BREAKER and the COMPRESSOR CIRCUIT BREAKER to "ON."
8. Turn the MODE SELECTOR switch to VENT (ventilate). The evaporator fan should start immediately. Use a paper
streamer, or other method, to check the airflow into the return air louver and out of the conditioned air supply louver.
Test the EVAPORATOR FAN SPEED switch at both the HIGH and the LOW speed settings. There should be
noticeably more airflow at the HIGH-speed setting than at the LOW speed setting.
CONTROL CIRCUIT
CAUTION
BREAKER
OFF
ON
CONTROL
CIRCUITBREAKER
POWER
TEMPERATURE
INPUT
MODE
SELECTOR
WARNING: DO NOT REMOVE MODULE BEFORE CONSULTING T.M.
SELECTOR
SWITCH
CONTROL MODULE
COOLER
WARMER
COOL
SWITCH
VENT
OFF
ON
TEMPERATURE
SELECTOR
EVAPORATOR
OFF
FAN SPEED
LOW
HIGH
COMPR
SWITCH
LOW
HIGH
CIRCUIT BKR
HEAT
MODE SELECTOR
EVAPORATOR
COMPRESSOR
MODEL
FAN SPEED
CIRCUIT
RESET
RESET
BKR (BREAKER)
LOW PRESSURE
HIGH PRESSURE
0005 00-2
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