AIRPLANE
OPERATIONS
MANUAL
PNEUMATICS
AIR CONDITIONING
AND PRESSURIZATION
REVISION 38
2-14-10
Page
13
Code
01
AOM-145/1114
CONTROLS AND INDICATORS
AIR CONDITIONING AND PNEUMATIC CONTROL
PANEL
1 - Cockpit temperature and mode selector knob
− PRESSED - Controls the left pack in automatic mode through
the Digital Temperature Controller. The cockpit temperature
may be set between 18°C (65°F) and 29°C (85°F).
− PULLED - Controls the left pack in manual mode through the
temperature control module. No temperature range is
established.
2 - PASSENGER CABIN TEMPERATURE AND MODE SELECTOR
KNOB
− PRESSED - Controls the right pack in automatic mode through
the Digital Temperature Controller. The passenger cabin
temperature may be set between 18°C (65°F) and 29°C (85°F).
− PULLED - Controls the right pack in manual mode through the
manual mode circuit in the temperature control module. No
temperature range is established.
− ATTD - The passenger cabin temperature control is transferred
to the attendant’s panel in automatic mode only.
3 - RECIRCULATION BUTTON
− Turns on (pressed) or turns off (released) both recirculation
fans.
− A striped bar illuminates inside the button to indicate that it is
released.
4 - AIR CONDITIONING PACK BUTTON
− Opens (pressed) or closes (released) the Pressure Regulating
and Shutoff Valve of the associated ECU.
− A striped bar illuminates inside the button to indicate that it is
released.
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