Ingersoll-Rand Thermo King Cold Cube, Operator'S Manual

Page: 17 / 35

ColdCube Installation
16
Low Voltage DC Protection
The ColdCube is equipped with a battery monitor that protects
the compressor from low voltage when connected to DC
power. Thermo King has set the compressor low voltage
disconnect higher than required to provide partial battery
protection. If the ColdCube is operated when the vehicle
ignition is switched off, the compressor switches off
automatically as soon as the supply voltage falls below a set
level. The compressor will switch back on once the battery has
been recharged to the restart voltage level (normally 1.3V
higher than the cut-out value).
Before starting up the ColdCube for the first
time, check whether the operating voltage
and the battery voltage match (see type
plate).
Make sure that the cable at the positive
battery terminal is protected with a fuse.
See Figure 3.
Fuse Sizes:
• 140 Litre cooling: 15A
• 140 Litre freezing: 25A
• 330 Litre cooling: 15A
• 330 Litre freezing: 25A
• 915 Litre cooling: 25A
• 915 Litre freezing: 25A
NOTE: The battery monitor only switches
the compressor off and not the fans or
controller, therefore a residual draw of
1 to 1.5 amps on the battery will remain
unless the ColdCube power switch is turned
off.
We highly recommend installing an ignition
switch relay to turn off the ColdCube when
the vehicle is not running.