Ingersoll-Rand 900829, Maintenance Manual

Page: 35 / 142

Operating Instructions
33
Starting the Unit
Engine Operation
1. Start the truck engine.
2. Press the On/Off Key located in the In-Cab
Control Box. The In-Cab Control Box display
will be activated.
3. Check the setpoint, and adjust if necessary.
Electric Standby Operation
1. Connect the external power supply to the
electric power receptacle. Ensure that the
power supply is of the correct voltage and
phase for the unit.
2. Press the On/Off Key located in the In-Cab
Control Box. The In-Cab Control Box display
will be activated. The electric symbol will
appear on the screen.
3. Check the setpoint, and adjust if necessary.
NOTE: The operating mode, whether
engine-driven or electric standby, is selected
automatically. When the unit is connected to an
electric power source, engine-driven operation is
automatically blocked. If the truck engine is
started up while the power cable is still
connected to the electric power source, the unit
will continue to operate in electric standby mode.
Standard Display
This is the display that appears when the On/Off
key is pressed and the unit started. It normally
displays the return air temperature (of both load
compartments in multi-temperature units) and the
current operating mode with the appropriate
symbol.
Should there be an alarm, the alarm symbol will
also appear on screen.
Single-Temperature Units
Figure 14: Single-Temperature Units
The example in the drawing shows: 10.8 C
temperature, cool mode and standby operation.
Multi-Temperature Units
Figure 15: Multi-Temperature Unit
The example in the drawing shows: -10 C
temperature and cool mode in the main
compartment, and 2 C temperature and heat mode
in the remote compartment. Unit running in
on-the-road mode.
Entering the Setpoint
Temperature
The Setpoint Temperature can be quickly and
easily changed.
In Single-Temperature Units
Figure 16: Single-Temperature Units
1. Press and release the Select key twice, and the
current Setpoint Temperature and the letters
SP will appear on screen.
12.
Maintenance
Symbol Warns of the need to carry out
maintenance to the unit.
13. Defrost
Symbol Indicates the unit is in Defrost Mode.
14. Electrical
Symbol Indicates that the unit is in Electric
Standby.