737 MAX Flight Crew Operations Manual
Air Systems
Chapter 2
Controls and Indicators
Section 10
MN-FLT-OH-201
2.10.1
10 Controls and Indicators
Controls and Indicators
File Highlight
Bleed Air Controls and Indicators
1
DUAL BLEED Light
Illuminated (amber) – APU bleed air valve open and engine No. 1 BLEED air
switch ON, or engine No. 2 BLEED air switch ON, APU bleed air valve and
isolation valve open.
2
ISOLATION VALVE Switch
CLOSE – closes isolation valve.
AUTO –
• closes isolation valve if both engine BLEED air switches are ON and
both air conditioning PACK switches are AUTO or HIGH
• opens isolation valve automatically if either engine BLEED air or air
conditioning PACK switch positioned OFF.
OFF
ON
1
OFF
HIGH
PACK
WING-BODY
OVERHEAT
ON
2
BLEED
R RECIRC FAN
OVHT
OFF
VALVE
CLOSE
AUTO
OPEN
OFF
AUTO
WING
ANTI
ICE
TEST
TRIP
BLEED
ISOLATION
DUAL
BLEED
L PACK
RESET
R PACK
APU
AUTO
OFF
WING
ANTI
ICE
AUTO
HIGH
40
60
80
20
0
DUCT
PRESS
PSI
LR
PACK
WING-BODY
OVERHEAT
BLEED
L RECIRC FAN
OFF
AUTO
1
2
3
4
5
8
9
FORWARD OVERHEAD PANEL
6
7
March 1, 2021