Operation 7
Turn Your System On
To use the Idle Free FLEX system,youMUST start by turning the truck’s ignition
to the“OFF” position. The touchscreen nowpowersup andis the central
controlpoint. From the touchscreenyou will control loads and monitor power
consumption. A fully charged batterywill measureabout12.5voltson the
touchscreen. As youuse power, the voltage will drop untilyou get to11.2
volts. At 11.2volts the batteriesare depleted and the touchscreen will turn off
after 2 minutes. Recharge the batteries as soonas possible,thismay take
severalhours ofengine runtime.
FuelFired Coolant Heater
The coolant heater is turned on by pressing the HEAT switch on the
touchscreen. The heaterhas three output levels consisting of low,medium,
andhigh. It will cycle between these modes tokeepthe coolantbetween
140° F and 170° F. Inthe low stage,only the circulating pump is running as
the coolant is already warm. Partialloadis 50% heat output while full load
is 100% heatoutput.
Refer to theincluded FFH operation manual for furthersafety,
specification, troubleshooting,and maintenance details.
Cab interiorheat from the touchscreen and dash controls
Begin by pushing the HEAT button on the touchscreen. This starts the
coolant heater and provides power to the dash heating controls. The dash
heating controls are the original truck controls the blower fan speed and the
temperature control knob; blue for cold and red for hot. Always turn the
knob to the hottest setting and control the temperature in the cabin by
slowing the fan speed down. This method utilizes the least amount of
electrical energy and extends runtime. Note: you can also set the heating
controls to defrost to keep your windows clear of ice.
