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comes on and a SMOKE TOILET warning message is displayed on the EICAS primary
page. The system is reset by pressing the interrupt button on the detector. <0037>
NOTE
Operation of mobile transceivers in close proximity to
the smoke detectors or exhaust fumes from ground
equipment may cause a false alarm.
REV 56, Jan 31/03
Vol. 1 10--30--2
FIRE PROTECTION
Lavatory
Flight Crew Operating Manual MASTER
CSP A--013
Lavatory Smoke --- EICAS Indications <MST>
Figure 10---30---1
Smoke Detector
Lavatory Ceiling
700 and 2000 Hz tone
Test Pushbutton
Used to test smoke detector.
When pressed in:
Aural alarm comes on.
Alarm light comes on.
EICAS warning message
is displayed.
Interrupt Pushbutton
Used to reset smoke detector.
Alarm Light (red)
Comes on with the
aural alarm to indicate
that a smoke condition
exists in the lavatory.
Power Light (green)
Comes on to indicate
that the unit is powered.
SMOKE TOILET
Primary Page
<0039>
<0006>
SMOKE TOILET
Caution (amber)
Comes on with the
aural alarm to indicate
that a smoke condition
exists in the lavatory.
SMOKE TOILET <0037>
Warning (red)
Comes on with the
aural alarm to indicate
that a smoke condition
exists in the lavatory.
Vol. 1 10--30--3
REV 56, Jan 31/03
FIRE PROTECTION
Lavatory
Flight Crew Operating Manual
CSP A--013
MASTER
B. Extinguishing
Fire extinguishing in the lavatory waste paper towel container is initiated automatically.
The system consists of a disposable Halon fire extinguisher bottle with dual discharge
nozzles. The bottle is mounted near the waste container with the nozzles extending
into the waste container. The end of each discharge nozzle is sealed with a heat
sensitive capsule which, when subjected to heat, melts to release the extinguishing
agent into the waste container. A temperature indicating strip sensor is located on the
inside of the waste compartment door. The sensor is used to provide an indication that
high temperature has been sensed in the compartment and that the bottle may have
discharged.
Lavatory Waste Compartment Extinguisher
Figure 10---30---2
WASTE COMPARTMENT
FIRE EXTINGUISHER
C. System Circuit Breakers
SYSTEM SUB--SYSTEM CB NAME BUS BAR CB
PANEL
CB
LOCATION
NOTES
Lavatory Smoke
Detection SMOKE DET DC BUS 1 1 K1
REV 56, Jan 31/03
Vol. 1 10--30--4
FIRE PROTECTION
Lavatory
Flight Crew Operating Manual MASTER
CSP A--013
THIS PAGE INTENTIONALLY LEFT BLANK
Vol. 1 10--40--1
REV 56, Jan 31/03
FIRE PROTECTION
Main Landing Gear Overheat Detection
Flight Crew Operating Manual
CSP A--013
MASTER
1. MAIN LANDING GEAR OVERHEAT DETECTION
The main landing gear overheat detection system provides indication of an overheat
condition in the main landing gear wheel well bins. An overheat contion can be caused by
overheated brakes or brake fires. The system consists of two overheat detection sensor
loops and an overheat detection unit.
The sensor loops are installed around the top inner surface of each main wheel well bin and
are connected to the detection unit which is installed in the forward avionics compartment.
The overheat detection unit continuously monitors the loops for overtemperature conditions
and system faults (short circuits). If an overheat condition is detected by the unit, in either
wheel well bin, a signal is sent to the EICAS to display a MLG BAY OVHT warning message
on the primary page. If a system fault is detected by the unit, a signal is sent to the EICAS
to display a MLG OVHT FAIL caution message on the primary page.
The warning of an overheat condition, alerts the pilot to immediately lower the landing gear
to reduce the landing gear temperature. The warning message will persist until the
temperature in the wheel well bin returns to normal limits.
The main landing gear overheat detection system may be tested, from the landing gear
control panel, by simulating an overheat condition or a system fault condition. The EICAS
will display the applicable warning or caution message during the test.
REV 56, Jan 31/03
Vol. 1 10--40--2
FIRE PROTECTION
Main Landing Gear Overheat Detection
Flight Crew Operating Manual MASTER
CSP A--013
Main Landing Gear Overheat --- EICAS Indications <MST>
Figure 10---40---1
Primary Page
<0039>
<0006>
MLG OVHT FAIL
MLG BAY OVHT
MLG OVHT FAIL Caution (amber)
　
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