737 MAX Flight Crew Operations Manual
Fire Protection
Chapter 8
Controls and Indicators
Section 10
MN-FLT-OH-201
8.10.1
10 Controls and Indicators
Controls and Indicators
File Highlight
Overheat/Fire Protection Panel Switches
1
Overheat Detector (OVHT DET) Switch
NORMAL – detection loop A and loop B are active.
A – detection loop A is active.
B – detection loop B is active.
2
Fire Warning BELL CUTOUT Switch
Push –
• extinguishes both master FIRE WARN lights
• silences the fire warning bell
• silences the remote APU fire warning horn (on the ground only)
• resets the system for additional warnings.
3
Extinguisher (EXT) TEST Switch
(spring–loaded to center)
1 or 2 – tests bottle discharge circuit continuity for all three extinguisher bottles.
4
Fault/Inoperative (FAULT/INOP) and
Overheat/Fire (OVHT/FIRE) TEST Switch
(spring–loaded to center)
FAULT/INOP – tests fault detection circuits for both engines and the APU.
OVHT/FIRE – tests overheat and fire detection loops on both engines and APU,
and wheel well fire detector
Note:
See Fire and Overheat Detection System Fault Test in Section 20.
DISCHARGED
APU BOTTLE
INOP
APU DET
FAULT
WELL
WHEEL
PULL WHEN ILLUMINATED
OVERHEAT
R
ENGINES
OVHT DET
NORMAL
B
A
1
2
T
S
E
T
T
X
E
E
R
I
F
T
H
V
O
P
O
N
I
DISCH
ENG 2
(FUEL SHUTOFF)
FIRE SWITCHES
OVERHEAT
ENG 1
OVHT DET
A
L
DISCH
LOCK OVERRIDE: PRESS
R
L
DISCH
BUTTON UNDER HANDLE
L
R
DISCHARGED
DISCHARGED
R BOTTLE
T
L
U
A
F
TEST
L BOTTLE
APU
BELL CUTOUT
NORMAL
B
2
1
5
4
6
AFT ELECTRONIC PANEL
3
March 1, 2021
Содержание 737-8
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