2--1
T--30404/08
SECTION 2
OPERATION (MANUAL CONTROLLER)
2.1 STARTING, STOPPING AND OPERATING
INSTRUCTIONS
The control switches supplied by Carrier Transport Air
Conditioning will be marked with international symbols
(See Figure 2.1).
Before starting, electrical power must be available from
the bus power supply.
150Amp@12VDCor125Amp@24VDCfromafusein
the battery compartment supplies power for the clutch,
evaporator and condenser assemblies.
2.1.1 Starting
a. If the engine is not running, start the engine.
b. Actual start sequence depends on the operating co-
trol supplied. If only an ON/OFF switch is supplied,
place the switch in the ON (fan symbol) position to
start the system in the automatic mode.
c. After the pre--trip inspection is completed, the
switches may be set in accordance with the desired
control modes.
d. If low or high speed evaporator fan speed is desired,
press the FAN SPEED (fan symbol) button to bring
speed to the desired level.
2.1.2 Stopping
Placing the ON/OFF (Snowflake) switch in the OFF
position will stop the system operation by removing
power to the Logic Board.
Temperature Control
HEATCOOL
ON
OFF
LOW------HIGH
Figure 2.1 Control Switches (Typical)
2.2 PRE--TRIP INSPECTION
After startingsystem, allowsystemto stabilizefor tento
fifteen minutes and check for the following:
a. Listen for abnormal noises in compressor or fan mo-
tors.
b. Check compressor oil level (05G Compressor only).
c. Check refrigerant charge. (Refer to section 5.8.1 )
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