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____ airplane surfaces are not damaged by an APU exhaust fire. If the flames from an APU exhaust fire are blown on the airplane surfaces, the qualified ground-observer must examine all the damaged areas.
 S 862-065
 (14) If the APU increases its speed to 100%, make sure the APU GEN OFF BUS light comes on.
 NOTE: When the APU GEN OFF BUS light comes on, the APU is
____ prepared for the pneumatic loads and electrical loads.
 S 862-066
 (15) Permit the APU to operate with no loads for a minimum of 1 minute.
 NOTE: The exhaust gas temperature (EGT) must become stable
____ before you apply a load to the APU.
 TASK 49-11-00-862-067
 3. APU Usual Shutdown
__________________
 A. Access
 (1)  
Location Zones
 201 Control Cabin, LH
 202 Control Cabin, RH
 701 Tail Compartment

 (2)  
Access Panels
 3701 Stabilizer Trim Access Door

 

 B. Procedure
 S 862-068
 (1)  
Remove all the loads from the APU except the APU electrical generator that supplies the power to the No. 1 generator system.

 S 862-178

 (2)  
Keep the BUS TRANS switch on the P5 forward overhead panel in the OFF position.

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////////////////////////A / GTCP85-129 SERIES /737-300/400/500/ ENGINES/MAINTENANCE MANUAL ////////////////////////
S 862-070
 (3)
Let the APU to operate with no loads for a minimum of 1 minute.

 S 862-071

 (4)  
Set the APU master switch on the P5 forward overhead panel to the OFF position.

 NOTE: The APU fuel valve and the air inlet door must close in
____
 approximately 20 seconds.

 S 862-075
 (5)  
Set the No. 1 AFT FUEL PUMP switch on the P5 forward overhead panel to the OFF position.

 S 092-217

 (6)  
If the air inlet screen was installed, remove the air inlet screen from the airplane (Fig. 202).

 TASK 49-11-00-862-076
 4. APU Fire Shutdown
_________________
 A. Access
 (1)  Location Zones
 101 Control Cabin, LH
 102 Control Cabin, RH
 217 Right Main Wheel Well

 B. Procedure
 S 862-077
 CAUTION: WHEN YOU USE THE FIRE HANDLE TO STOP THE APU, THE FIRE
_______ EXTINGUISHER IS ARMED. DO NOT TURN THE FIRE HANDLE BEFORE YOU MAKE SURE THERE IS A FIRE IN THE APU COMPARTMENT. WHEN YOU TURN THE FIRE HANDLE, THE APU FIRE BOTTLE RELEASES ITS CONTENTS INTO THE APU COMPARTMENT.
 (1)  Pull one of the two fire handles.
 NOTE: One fire handle is on the P8 aft electronics panel.
____ This fire handle is also referred to as the APU fire switch.
 The other fire handle is on the P28 APU remote control panel. This fire handle is also referred to as the remote fire switch.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
S 862-078
 (2)  
Set the APU master switch on the P5 forward overhead panel to the OFF position.

 S 862-185

 (3)  
Set the No. 1 AFT FUEL PUMP switch on the P5 forward overhead panel to the OFF position.

 S 862-080

 (4)  
Set the applicable fire handle back to its initial position.

 TASK 49-11-00-862-081
 5. APU Automatic Shutdown
______________________
 A. General
 (1)  After the APU automatic shutdown, find the cause for the shutdown, correct the condition (AMM 49-00-00/101) and do an APU start again.
 B. References
 (1)  AMM 49-00-00/101, Airborne Auxiliary Power
 C. Access
 (1)  Location Zones
 101 Control Cabin, LH
 102 Control Cabin, RH

 D. Procedure
　
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