APU FIRE PROTECTION
SYSTEM
GENERAL
The APU fire protection system consists of a
fire loop/detector unit (Figure 8-7), a Halon
extinguishing agent container and circuitry
within the maintenance panel that initiates an
automatic shutdown of the APU and extin-
guishing agent discharge.
The APU fire extinguishing agent container is
located on the forward right hand exterior area
of the containment box (Figure 8-8). The pres-
sure gage indicates a discharged, partially dis-
charged or full container.
CONTROLS AND INDICATIONS
APU Cockpit Control Panel
The APU cockpit control panel is used to con-
trol the APU operation and monitor the elec-
trical load of the starter/generator. The crew
LEARJET 45 PILOT TRAINING MANUAL
8-7
FOR TRAINING PURPOSES ONLY
FlightSafety
international
Figure 8-7. APU Fire Detection Loop
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