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Cabin altitude limitation functions override this function and will not allow the cabin altitude above
14,500 ± 500 feet. The cabin rate of climb limitation is inoperative.
GF0210_080
0% 0%
OPEN OPEN
OUTFLOW VALVES
1 2
EMER DEPRESS
L−R PACK OFF
14,800
7.74
5000
1000
CAB ALT
P
CAB RATE
LDG ELEV
DEPRESS
ON
EMER
Close Outflow Valve
The OFVs can be manually closed, both in AUTO and MAN, by selecting the OUTFLOW VLV
switch(es) on the Cabin Pressure Control Panel. The OFV is driven to the closed position, through
the manual drive of its actuator. The outflow valves’ position will be displayed on the STATUS
page and a message is displayed on EICAS.
GF0210_081
0% 13%
OPEN OPEN
OUTFLOW VALVES
1 2
OUTFLOW VLV 1 CLSD
OUTFLOW VALVE
CLOSED
1
CLOSED
2
AIR CONDITIONING AND PRESSURIZATION
Flight Crew Operating Manual Rev 12, Aug 14, 2006
CSP 700−5000−6
Volume 2
02−10−64
SYSTEM SAFETIES (CONT'D)
Door Open Protection
Door open protection, prevents cabin pressurization if the main entrance door is not closed and
fully locked.
If the main entrance door is open:
• If both packs are ON, both outflow valves are driven to the open position.
GF0210_082
100% 100%
OPEN OPEN
OUTFLOW VALVES
1 2
PASSENGER DOOR
• If one pack is OFF, one OFV is driven close with preference to aft OFV over forward OFV
(i.e. if forward OFV is already closed, the aft OFV will not then be driven close).
GF0210_083
0% 100%
OPEN OPEN
OUTFLOW VALVES
1 2
PASSENGER DOOR
AIR CONDITIONING AND PRESSURIZATION
Rev 12, Aug 14, 2006 Flight Crew Operating Manual
CSP 700−5000−6
Volume 2
02−10−65
EICAS PHILOSOPHY
The following represents the EICAS symbols and logic for the BLEED and AIR CONDITIONING
synoptic pages. The symbols are shown in serviceable and failure conditions.
GF0210_084
BLEED and AIR CONDITIONING LOGIC
VALVE AND FLOW LINE
OPEN
VALVE
NOT FAILED
CLOSED
TRANSIT
INVALID
VALVE
FAILED
DIRECTION OF FLOW
PACKS
OPERATING OPERATING FAILED INVALID
NOT
LP
HP
BLEED AIR STARTER
POP−UP DISPLAY
and SAV
EITHER ENGINE NOT OPERATING
AIR CONDITIONING AND PRESSURIZATION
Flight Crew Operating Manual Rev 12, Aug 14, 2006
CSP 700−5000−6
Volume 2
02−10−66
BLEED/AIR CONDITIONING/PRESSURIZATION EICAS MESSAGES
AUTO PRESS FAIL
Indicates that both channels
of the pressurization control
are inoperative.
L − R PACK TEMP
Indicates that the manual
temperature selection is out
of range.
AV FANS FAIL
Both fans are
failed on the
CABIN DELTA P
Indicates that cabin differential
pressure is greater than 10.85 psid.
EMER DEPRESS
Indicates that EMER DEPRESS
switch has been selected ON.
L − R BLEED LEAK
Indicates that a bleed leak has been
detected in the L or R bleed ducts.
L − R PACK AUTO FAIL
Indicates that the affected automatic
pack control is inoperative.
L − R PACK FAIL
Indicates that the
affected pack
TRIM AIR FAIL
Indicates that one trim air valve
and one hot air SOV are failed.
TRIM AIR LEAK
Indicates that a leak has been
detected in the trim air ducts.
XBLEED FAIL
Indicates that the bleed
crossfeed has failed, open
or closed.
L − R BLEED SYS FAIL
Indicates that the affected bleed
system has failed.
FGF0210_007b
CABIN ALT
CABIN DELTA P
AV FANS FAIL
CABIN ALT
EMER DEPRESS
L BLEED LEAK
R BLEED LEAK
L BLEED SYS FAIL
R BLEED SYS FAIL
L PACK AUTO FAIL
R PACK AUTO FAIL
L PACK FAIL
R PACK FAIL
L PACK TEMP
R PACK TEMP
TRIM AIR FAIL
TRIM AIR LEAK
XBLEED FAIL
has failed.
ground.
CABIN ALT
Indicates that cabin altitude
is 9,000 feet or greater.
AUTO PRESS FAIL
CABIN ALT
Indicates that
cabin altitude
is between 8,200
and 9,000 feet.
AIR CONDITIONING AND PRESSURIZATION
Rev 12, Aug 14, 2006 Flight Crew Operating Manual
CSP 700−5000−6
Volume 2
02−10−67
BLEED/AIR CONDITIONING/PRESSURIZATION EICAS MESSAGES (CONT'D)
Effectivity:
• Airplanes 9127 thru 9158 not incorporating Service Bulletin:
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