TriPac HMI Controller Description and Operation
26
Operating Modes
Air Conditioning Mode
If the HMI controller senses that the truck cab sleeper
compartment temperature is 5 F above setpoint, the APU
engine will start (if not already running) and the compressor
clutch will engage. The A/C system will operate for at least 15
minutes after the temperature in the sleeper compartment
reaches setpoint. This is to ensure that the truck battery is
sufficiently charged. The APU engine will shut down if the
sleeper compartment temperature setpoint and truck battery
voltage have been attained (and, when the optional Arctic
Package is installed, if the coolant temperature has been
attained).
Heat Mode
The air heater controls the sleeper cab temperature to the
setpoint entered in the HMI. If the APU is enabled, the
evaporator fans can be on to circulate more air, and battery
voltage sensing is enabled..
Fan Mode
The fans can be turned on for air circulation in the truck cab.
Fan speed is selected and battery voltage sensing is enabled.
The APU must be enabled..
Monitor (Null) Mode
The Monitor (Null) mode occurs when the HMI controller is
on, the APU system is enabled and no Mode or Fan LEDs are
illuminated (fans are off). Battery voltage sensing is enabled. If
the optional Arctic Package is installed, coolant temperature
sensing is enabled. Truck cab temperature sensing is not
enabled.
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Страница 10: ...Introduction 6...
Страница 26: ...Manual Pretrip Inspection Before Starting the TriPac Unit 22...
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Страница 58: ...Maintenance Inspection Schedule 54...
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