Eagle ICA-D212-725, Инструкция по эксплуатации

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ICA-D212-725 (26)
Page 3 of 11
CHAPTER 26 – FIRE PROTECTION (26-00-00)
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COPYRIGHT

2007 BY DART AEROSPACE LTD.

THIS DOCUMENT IS PRIVATE AND CONFIDENTIAL AND IS SUPPLIED ON THE EXPRESS CONDITION THAT IT IS NOT TO BE USED FOR ANY PURPOSE OR COPIED OR COMMUNICATED TO ANY
OTHER PERSON WITHOUT WRITTEN PERMISSION FROM DART AEROSPACE LTD.
Revision:
5
Date: 12.06.20
26.1 FIRE PROTECTION
Fire protection consists of fire detection systems
which give warning of fire in the engine
compartment, hand fire extinguishers in the cabin,
and an engine fire extinguishing system.
26.2 ENGINE FIRE DETECTION SYSTEM
The fire detection system consists of a control
amplifier mounted in the aft electrical
compartment, three infrared fire detectors
strategically mounted in the engine section, a
smoke detector mounted in the baggage
compartment, and a warning light on the
instrument panel. The system utilizes infrared
radiation as a principle of operation. Heat level or
rate of heat rise has no effect in the sensing
method. The cockpit warning light will illuminate
(steady) when any one of the detectors senses the
infrared radiation of a fire. In the event of a fire in
the cargo compartment, the control amplifier will
be triggered by the smoke detector unit sensing
the accumulation of smoke. The fire warning light
will illuminate (flashing on and off) intermittently.
Upon elimination of the fire the entire system
automatically recycles to normal and is again
ready to detect. The control amplifier is designed
with a fail-safe feature so that a shorted or open
detector circuit will have no effect on the normal
operation and will not cause the warning light to
illuminate.
26.3 TEST SWITCH
A functional test switch is provided on the
instrument panel for testing the detectors and
smoke detector unit. Switches 1, 2, and 3 will
produce a steady light. Cargo fire test switch will
produce a flashing light for the check of the cargo
compartment smoke detector.
26.4 TESTING – FIRE DETECTION
SYSTEM
26.4.1
Close FIRE DET circuit breaker.
Check that FIRE CAUTION lights are not
illuminated.
26.4.2
Push FIRE DET TEST #1 switch.
Check that lamps of FIRE CAUTION (‘T’ Handle)
light illuminate steadily.
26.4.3
Push FIRE DET TEST switches
successively #2 and #3. Check that lamps of FIRE
CAUTION lights are illuminated in each of the
positions.
26.4.4
Push CARGO FIRE TEST switch.
Check that two lamps of CARGO FIRE CAUTION
light flash on and off.
26.4.5
Check that FIRE CAUTION lights are
extinguished when switches are released.
26.5 PERIODICAL TESTING – FIRE
DETECTOR SYSTEM
Connect the 30-502 Pyrotector tester (Figure 26-1)
into the wiring and complete the following routine
tests:
26.5.1
Connect the four cables to the installed
system by connecting two cables to the control
amplifier and the other two cables to the cables
removed from the control amplifier. The cables can
only be installed one way.
26.5.2
Apply power to the system.
26.5.3
Check for nominal 28 volt supply by
pressing the line-meter switch (5) to the LINE X2
position. Line voltage should be equal to meter
reading multiplied by two.
26.5.4
Check the control amplifier input circuits
for each detector in the system by holding the
DETECTOR TEST switches (4), one at a time in the
downward position. If the amplifier is functioning
properly the FIRE ALARM light (6) will glow and the
voltmeter will indicate a voltage increase from its
normal residual reading.