737 MAX Flight Crew Operations Manual
Air Systems -
Controls and Indicators
MN-FLT-OH-201
2.10.5
2
ZONE TEMP Lights
Illuminated (amber) –
• CONT CAB indicates a duct temperature overheat or failure of the
flight deck primary and standby temperature control
• FWD CAB or AFT CAB indicates duct temperature overheat.
3
Temperature Selector
AUTO – provides automatic temperature control for the associated zones.
Rotating the control toward C (cool) or W (warm) manually sets the desired
temperature.
OFF – closes the associated trim air modulating valve.
4
Air Conditioning PACK Switch
OFF – pack signaled OFF.
AUTO –
• with both packs operating, each pack regulates to low flow
• with one pack operating, operating pack regulates to high flow in flight
with flaps up
• when operating one pack from APU (both engine BLEED air switches
OFF), regulates to high flow.
HIGH –
• pack regulates to high flow
• provides maximum flow rate on ground with APU BLEED air switch
ON.
5
AIR Temperature (TEMP) Source Selector
SUPPLY DUCT – selects appropriate zone supply duct temperature
PASS CAB – selects forward or aft passenger cabin temperature
PACK – selects left or right pack temperatures.
6
TRIM AIR Switch
ON - trim air pressure regulating and shutoff valve signaled open.
OFF - trim air pressure regulating and shutoff valve signaled closed.
7
Recirculation (RECIRC) FAN Switches
OFF - fan signaled off.
March 1, 2021
Содержание 737-8
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