What is a Thermo King Tripac?
What is a Thermo King Tripac?
APU’s are truck-mounted generators that allow drivers to run electrical components, along with their heating & air conditioning system instead of running their engine. You can learn more about this technology on the Thermo King APU website.
How much does a TriPac evolution cost?
Despite high initial prices of around $8,000, the ThermoKing TriPac and Carrier ComfortPro are earning recommendations for low maintenance costs and long-term durability, as well as an extensive service network.
What happens when the APU is turned off in a truck?
GFCI will trip occasionally when the APU system is turned off suddenly by starting the truck. The user manual instructs drivers to turn OFF the air conditioner with the thermostat only. 2. The inverter may overload (red light condition) if the start capacitor is not properly connected to the run capacitor.
When to shut down an APU inverter?
The connection quality is a factor especially after a year of operation. Service is required for the electrical APU harnesses. Clean, tighten and corrosion prevention for all APU electrical connections is required. 3. The inverter may shut down if 1500 watts is exceeded or 3000 watts surge is exceeded.
What causes the APU on a 737 to shut down?
The APU will auto-shutdown for the following reasons: Fire; Low oil pressure; High oil temperature / Fault; Overspeed; The OVERSPEED light may illuminate for any of the following reasons: An aborted start (overspeed signal given to shutdown). – Further restart may be attempted. A real overspeed while running. – Do not restart.
How long should Apu be run before pneumatic load?
*Initiates automatic cool down cycle. Warm up period: The minimum time to run the APU before a pneumatic load is applied. This allows the turbine wheel temperature to stabilise before a load is applied. Whilst 3 minutes is the recommended figure, 1 minute should be the absolute minimum. Note an electrical load may be used with no warm up period.
*Initiates automatic cool down cycle. Warm up period: The minimum time to run the APU before a pneumatic load is applied. This allows the turbine wheel temperature to stabilise before a load is applied. Whilst 3 minutes is the recommended figure, 1 minute should be the absolute minimum. Note an electrical load may be used with no warm up period.
What does two pack operation on Apu mean?
Bleed Pack Operation: The number of packs to use on the ground. APU’s which should run both packs have load compressors to supply bleed air. So two pack operation gives both cooler turbine wheel temperatures and a lower fuel burn. Main Engine Start (MES) to APU shutdown: The cool-down time to allow after main engine start.
The APU will auto-shutdown for the following reasons: Fire; Low oil pressure; High oil temperature / Fault; Overspeed; The OVERSPEED light may illuminate for any of the following reasons: An aborted start (overspeed signal given to shutdown). – Further restart may be attempted. A real overspeed while running. – Do not restart.
What happens when the APU EGT reaches 620?
If the APU EGT reaches 620-650 ° C, the bleed air valve will modulate toward closed. (This can lead to an aborted engine start if the electrics do not load shed first.)
