PNEUMATICS
AIR CONDITIONING
AND PRESSURIZATION
AIRPLANE
O
PERATIONS
MANUAL
2-14-15
Page
10
Code
02
REVISION 41
Copyright © by Embraer. Refer to cover page for details.
CONTROLS AND INDICATORS
DIGITAL CONTROLLER
1 - LANDING ALTITUDE INDICATOR
− Displays the selected landing altitude.
− Displays a failure code if any failure is detected during power-up
and continuous monitoring tests. In this case, the selection of
the landing altitude is disabled.
− Successful power-up test is displayed (all light segments
illuminated) until a landing altitude is selected.
− Displays blanks when Dump button or Mode Selector Button is
pressed.
2 - LANDING ALTITUDE SELECTOR SWITCH
− Sets the landing altitude in the Landing Altitude Indicator.
− Altitude changes in 100-ft steps. Holding the selector for more
than 5 seconds changes the altitude in a 1000 ft/sec rate.
− Landing altitude setting from –1500 ft to +14000 ft.
3 - PRESSURIZATION MODE SELECTOR BUTTON (guarded)
− Provides selection of either automatic mode (button released) or
manual mode (button pressed) of operation.
− When pressed, the MAN inscription illuminates inside the
button.
NOTE: In case of electrical failure that leads to the complete
turning off of the automatic mode turning off, manual mode
should be selected by pressing the Pressurization Mode
Selector Button, but the MAN inscription will not be
illuminated.
4 - PRESSURIZATION DUMP BUTTON (guarded)
− Provides rapid cabin depressurization up to 14500 ft.
− When pressed, an ON inscription illuminates inside the button.
− This button is effective in the automatic mode only.
To Next Page
