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PSP 604−6
TABLE OF CONTENTS
Page
TABLE OF CONTENTS
DESCRIPTION APU 150
Components and Operation 05−15−6
APU Fuel Distribution 05−15−8
Description 05−15−8
Components and Operation 05−15−8
Start and Ignition 05−15−12
Description 05−15−12
Components and Operation 05−15−12
Pneumatic Supply 05−15−20
Description 05−15−20
Components and Operation 05−15−20
Controls and Indicators 05−15−22
EICAS Messages 05−15−24
SUMMARY
Power Supply and Circuit Breaker Summary 05−20−1
LIST OF ILLUSTRATIONS
DESCRIPTION APU 100E
Figure 05−10−1 Auxiliary Power Unit (APU) 05−10−1
Figure 05−10−2 APU Power Section and Accessory Gearbox 05−10−3
Figure 05−10−3 APU Generator Adapter 05−10−5
Figure 05−10−4 Air Intake, Exhaust and Indication 05−10−7
Figure 05−10−5 APU Fuel Pump and Shutoff Valve 05−10−9
Figure 05−10−6 Negative−G Shutoff Valve and FCU 05−10−11
Figure 05−10−7 APU Start and Ignition 05−10−13
Figure 05−10−8 APU Start 05−10−15
Figure 05−10−9 APU Normal Shutdown 05−10−17
Figure 05−10−10 APU Protective/Emergency Shutdowns and Faults 05−10−19
Figure 05−10−11 APU Pneumatic Supply 05−10−21
Figure 05−10−12 APU Panel and EICAS Indications 05−10−22
Figure 05−10−13 EICAS and Synoptic Page Color Coding 05−10−23
DESCRIPTION APU 150
Figure 05−15−1 Auxiliary Power Unit (APU) 05−15−1
Figure 05−15−2 APU Power Section and Accessory Gearbox 05−15−3
Figure 05−15−3 APU Generator Adapter 05−15−5
AUXILIARY POWER UNIT
Table of Contents
Vol. 2 05−00−2
REV 76, Jul 17/09
CL−604 Operating Manual
PSP 604−6
Page
DESCRIPTION APU 150
Figure 05−15−4 Air Intake, Exhaust and Indication 05−15−7
Figure 05−15−5 APU Fuel Pump and Shutoff Valve 05−15−9
Figure 05−15−6 Negative−G Shutoff Valve and FCU 05−15−11
Figure 05−15−7 APU Start and Ignition 05−15−13
Figure 05−15−8 APU Start 05−15−15
Figure 05−15−9 APU Normal Shutdown 05−15−17
Figure 05−15−10 APU Protective/Emergency Shutdowns and Faults 05−15−19
Figure 05−15−11 APU Pneumatic Supply 05−15−21
Figure 05−15−12 APU Panel and EICAS Indications 05−15−22
Figure 05−15−13 EICAS and Synoptic Page Color Coding 05−15−23
AUXILIARY POWER UNIT
Table of Contents
Vol. 2 05−00−3
REV 76, Jul 17/09
CL−604 Operating Manual
PSP 604−6
Page
AUXILIARY POWER UNIT
Table of Contents
Vol. 2 05−00−4
REV 76, Jul 17/09
CL−604 Operating Manual
PSP 604−6
THIS PAGE INTENTIONALLY LEFT BLANK
GENERAL
A GTCP–36–100E constant-speed gas turbine auxiliary power unit (APU) is installed in a
fire-resistant compartment in the aft equipment bay of the airplane.
The APU drives a generator providing AC electrical power during ground operations, and serves as a
backup AC power source in flight. The APU also provides pressurized bleed air to the 10th-stage
manifold for air conditioning and engine starting.
The maximum operating altitude of the APU is 20,000 feet MSL. In-flight APU starting is guaranteed
below 15,000 feet and has been demonstrated up to 20,000 feet, from 141 to 290 KIAS. In-flight APU
bleed air extraction for air conditioning is not permitted above 14,500 feet.
APU Enclosure
The APU enclosure is a stainless−steel, fire-resistant box with dedicated fire detection and fire
extinguishing capabilities. The enclosure is located in the forward section of the aft equipment bay,
and is equipped with a service door for APU oil servicing. A spring-loaded closed flapper door is
located on the left side of the enclosure and opens to provide cooling airflow while the APU is
operating.
APU fire detection and fire extinguishing systems are covered in Chapter 9, Fire Protection.
Auxiliary Power Unit (APU)
Figure 05−10−1
AUXILIARY POWER UNIT
Description APU 100E
Vol. 2 05−10−1
　
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