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Management and Guidance System (FMGS) and the Air
Inertial/Reference System (ADIRS).
When in MAN position, the outflow valve is controlled
by the MANual Vertical Speed control switch.
When the MANual mode is selected, it overrides the
automatic pressure control system. Normally, this mode
is only used in the event of the failure of both
automatic systems.
The MANUAL Vertical Speed control switch is spring
loaded to neutral. It is used to manually control the
outflow valve only when MANual mode has been selected
using the MODE SELector pushbutton.
-UP: the valve moves towards the open position.
-DN: the valve moves towards the closed position.
Note 1: In MANual mode, CPC1 has a backup system with
a pressure sensor which ensures excessive
cabin altitude warning generation and pressure
outputs for the indication on the EIS.
Note 2: The MANual mode can only be selected a maximum
of two times in a single flight. On the third
selection, the auto system previously in
control will remain in the latched state.
DITCHING PUSHBUTTON
When the DITCHING pushbutton is selected ON, the
operating controller sends a closure signal to the
outflow valve.
DITCHING
When ON: The outflow valve closes, and in addition,
the emergency ram air inlet, avionics ventilation
extract valve and pack flow control valves close.
Note:
If MANual mode has been selected, the outflow valve
does not close automatically.
TMUPRE40A-T01 LEVEL 1
EFFECTIVITY 21-31-00 Page 2
Jul 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 21 AIR CONDITIONING
UF94200
EFFECTIVITY Page 154
ALL
PRESSURIZATION - SYSTEM CONTROLS AND INDICATING
TMUPRE40A-P01 LEVEL 1
EFFECTIVITY 21-31-00 Page 3
Jul 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 21 AIR CONDITIONING
UF94200
EFFECTIVITY Page 155
ALL
SELF EXAMINATION
Where do you check the correct Manual landing
elevation setting ?
A - On the scale of LDG ELEV switch
selector.
B - On the ECAM CAB PRESS page.
C - No need because it is automatic.
What happens if the MODE SELECTOR is set to MAN and
the DITCHING pushbuttom is set ON ?
A - The outflow valve, emergency RAM AIR
inlet, avionics ventilation and pack
flow control valves close.
B - Only the outflow valve closes.
C - Only the outflow valve is not
automatically controlled to close.
TMUPRE40A LEVEL 1
EFFECTIVITY 21-31-00 Page 4
Jul 31/00
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 21 AIR CONDITIONING
UF94200
EFFECTIVITY Page 156
ALL
21 - AIR CONDITIONING
21-31-00 PRESSURIZATION -
ECAM PAGE PRESENTATION
CONTENTS:
Outflow Valve
Safety Valves
System: SYS 1 Or SYS 2
Cabin Differential Pressure
Cabin Vertical Speed (V/S)
Manual Mode (MAN)
Cabin Altitude (CAB ALT)
Landing Elevation
TMUPRE503 LEVEL 1
EFFECTIVITY 21-31-00 Page 1
Sep 30/99
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 21 AIR CONDITIONING
UF94200
EFFECTIVITY Page 157
ALL
PRESSURIZATION - ECAM PAGE PRESENTATION
OUTFLOW VALVE
The outflow valve position is normally displayed in
green. If fully open in flight it changes to amber.
SAFETY VALVES
The safety valve position is displayed in green when
the two safety valves are closed. It becomes amber if
either safety valve is not closed.
SYSTEM: SYS 1 OR SYS 2
SYS 1 or SYS 2 indication is displayed in :
- green when active
- amber when faulty
- It is not displayed when inactive.
CABIN DIFFERENTIAL PRESSURE
The cabin differential pressure is displayed in green
when in normal range. It changes to amber when out of
limits.
- Indicated values in green when in normal range,
- and amber when less than 0.4 PSI or greater
than 8.5 PSI.
- Pulsing advisory when DP greater than 1.5PSI
during final approach (below 800 feet).
CABIN VERTICAL SPEED (V/S)
The cabin vertical speed is normally displayed in
green. It changes to amber when out of normal range.
It is also displayed on the cruise page.
- Indicated values in green when in normal range,
- and amber when V/S greater than 2000ft/mn up
or down.
- Pulsing advisory when V/S greater than
1200 ft/mn.
TMUPRE503-T01 LEVEL 1
EFFECTIVITY 21-31-00 Page 2
Sep 30/99
_A319/A320/A321 TECHNICAL TRAINING MANUAL
MECHANICS / ELECTRICS & AVIONICS COURSE 21 AIR CONDITIONING
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