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TK 55711-19-OP-EN
Unit Description
The Thermo King TriPac Evolution APU (Auxiliary Power Unit) provides
auxiliary heating, cooling temperature management that allows drivers to
reduce unnecessary truck engine idling, conserve diesel fuel and save
money. TriPac Evolution provides truck engine preheating, battery charging
and truck cab sleeper compartment climate control.
By using TriPac, drivers can reduce fuel cost, rest comfortably during stops
and comply with local, state and federal anti-idle laws. Reducing
unnecessary truck engine idling also reduces engine wear and extends
engine maintenance intervals. TriPac’s own diesel engine uses an automatic
start/stop feature for additional fuel efficiency.
TriPac’s two-cylinder diesel engine is EPA Tier 4 approved. An automotive
type air conditioning compressor is used for sleeper compartment cooling. A
fuel-fired air heater provides sleeper compartment heat in cold conditions.
Voltage sensing automatically charges the truck batteries from TriPac’s 12-
volt alternator. Noise dampening construction assures quiet operation. Truck
engine preheating provides easier cold-climate starts by exchanging coolant
between TriPac and the truck engine. An optional inverter provides 120-volt
power to operate on-board appliances.
An optional Arctic package aids truck engine startups in cold weather by
sensing low coolant temperature. The TriPac is started automatically to heat
the coolant as required.
Figure 4. TriPac Evolution APU
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