Operational Test of Outflow Valve Partial Opening by Emergency Ram Air Switch

TASK 21-31-00-710-005-A
Operational Test of Outflow Valve Partial Opening by Emergency Ram Air Switch

WARNING: MAKE SURE THAT AIR IS NOT SUPPLIED TO THE AIR CONDITIONING SYSTEM FROM THE MAIN ENGINE, THE APU OR A GROUND SOURCE. HOT COMPRESSED AIR CAN CAUSE INJURY TO PERSONNEL.

ZONE: 210

1. Reason for the Job
Refer to the MPD TASK: 213100-04
OPERATIONAL CHECK OF OUTFLOW VALVE PARTIAL OPENING BY EMERGENCY RAM AIR SWITCH
2. Job Set-up Information
A. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD

B. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 31-60-00-860-001-A	EIS Start Procedure
TASK 31-60-00-860-002-A	EIS Stop Procedure
TASK 34-10-00-860-002-A	ADIRS Start Procedure
TASK 34-10-00-860-005-A	ADIRS Stop Procedure

3. Job Set-up
Subtask 21-31-00-861-066-A

A. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).

Subtask 21-31-00-865-055-A

B. Make sure that this(these) circuit breaker(s) is(are) closed:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	AIR COND/RAM/AIR/INLET	1HZ	D10
49VU	AIR COND/CAB/PRESS/CTL1	1HL	D09
122VU	AIR COND/CAB PRESS/CTL/MAN	3HL	Y23
122VU	AIR COND/CAB PRESS/CTL/2	2HL	Y22

Subtask 21-31-00-860-059-A

C. Aircraft Maintenance Configuration
(1) Do the EIS start procedure (upper ECAM DU and lower ECAM DU only)
(Ref. AMM TASK 31-60-00-860-001).
(2) Do the start procedure of the ADIRS (Ref. AMM TASK 34-10-00-860-002).
(3) Make sure that:

on the ECAM lower display unit the CAB PRESS page shows,
on the AIR COND panel 30VU the PACK 1 and the PACK 2 pushbutton switches are in the OFF position (the FAULT legend is off, the OFF legend is on).
on the CABIN PRESS section of the panel 25VU the MODE SEL pushbutton switch is in the AUTO position (the FAULT and the MAN legends are off).

NOTE: Make sure there are no persons near the outflow valve before you start this test.

4. Procedure
Subtask 21-31-00-710-055-A

WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE OUTFLOW VALVES ARE CLEAR. MOVEMENT OF THE OUTFLOW VALVES CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

A. Operational Test of the Outflow Valve (50 deg.) partial opening by the Emergency Ram Air Switch

NOTE: Make sure that the area around the emergency ram air-flap is free from ground equipment and personnel.

(1) Do this test

ACTION	RESULT
1.On the AIR COND panel 30VU: lift the black guard and push the RAM AIR pushbutton switch.	On the AIR COND panel 30VU: the white ON pushbutton switch light comes on.
	On the ECAM upper display unit: the green RAM AIR ON memo message comes on.
	On the ECAM lower display unit: The outflow valve symbol shows approx. 50 DEG. open when the differential pressure in the fuselage is less than 1 psi.
2.On the ECAM control panel 11VU: push the BLEED pushbutton switch.	On the ECAM lower display unit: the BLEED page comes on.
	On the ECAM lower display unit: the ram air inlet symbol opens (the maximum operation time 20 s).
3.On the AIR COND panel 30VU: lift the black guard and push the RAM AIR pushbutton switch.	On the AIR COND panel 30VU: the white ON pushbutton switch light goes off.
4.On the ECAM control panel 11VU: push the PRESS pushbutton switch.	On the ECAM lower display unit: the CAB PRESS page comes on.
	On the ECAM lower display unit: the outflow valve symbol shows fully open.
	On the ECAM upper display unit: the green RAM AIR ON memo message goes off.
5.On the ECAM control panel 11VU: push the BLEED pushbutton switch.	On the ECAM lower display unit: the BLEED page comes on. the ram air inlet symbol is closed.

5. Close-up
Subtask 21-31-00-860-060-A

A. Put the aircraft back to its initial configuration.
(1) Do the ADIRS stop procedure (Ref. AMM TASK 34-10-00-860-005).
(2) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(3) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.02 06:11:14 UTC