Functional Test of the Foot Air-Outlet Heater

TASK 21-41-00-720-001-A
Functional Test of the Foot Air-Outlet Heater

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific	AR	THERMOMETER-SURFACE CONTACT
No specific	1	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
811

C. 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 49-00-00-860-005-A	APU Start by External Power
TASK 49-00-00-860-005-A-01	APU Start by Batteries
TASK 49-00-00-860-006-A	APU Shutdown by External Power
TASK 49-00-00-860-006-A-01	APU Shutdown by Batteries
TASK 49-00-00-860-008-A	APU Start by External Power
TASK 49-00-00-860-008-A-01	APU Start by Batteries
TASK 49-00-00-860-009-A	APU Shutdown by External Power (131-9(A))
TASK 49-00-00-860-009-A-01	APU Shutdown by Batteries (131-9(A))

3. Job Set-up
Subtask 21-41-00-860-050-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(2) Do the EIS start procedure (lower ECAM DU only) (Ref. AMM TASK 31-60-00-860-001).

Subtask 21-41-00-010-050-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Put an ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position at the access door 811.
(2) Open the access door 811.
(3) Put a WARNING NOTICE(S) in position to tell persons not to close the access door 811.

Subtask 21-41-00-865-051-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
122VU	CKPT/FOOT/HEATERS	1HE	V23

Subtask 21-41-00-860-051-A ** ON A/C NOT FOR ALL

D. Aircraft Maintenance Configuration
(1) Start the APU:

For APU APS 3200
(Ref. AMM TASK 49-00-00-860-005)
For APU 131-9(A)
(Ref. AMM TASK 49-00-00-860-008).

(2) On the AIR COND panel 30VU:

Push the PACK 1 and PACK 2 pushbutton switches (OFF and FAULT legends off).
Make sure that the PACK FLOW selector switch is at NORM.
Make sure that the COCKPIT, the FWD CABIN and the AFT CABIN temperature selectors are in the 12 o'clock position.

(3) Make sure that the cabin fans operate.
(4) Make sure that all the air outlets in the cockpit are open.

NOTE: To do this test, the cockpit ambient temperature must be between 20 deg.C (68.00 deg.F) and 28 deg.C (82.40 deg.F).

4. Procedure
Subtask 21-41-00-720-050-A ** ON A/C NOT FOR ALL

A. Functional Test of the Foot Air-Outlet Heater
(1) On the AIR COND panel 30VU:

Set the cockpit blown-air temperature to between 28 deg.C (82.40 deg.F) and 32 deg.C (89.60 deg.F) with the COCKPIT temperature selector 27HK.

NOTE: The temperature is shown on the AIR COND page of the lower ECAM DU.

NOTE: Use a THERMOMETER-SURFACE CONTACT to measure the temperature at the individual air outlet.

(2) When the blown air temperature is stable:

On the AIR COND panel 30VU, set the HEATER F/O selector switch 6HE to LO.

(3) Measure the blown air temperature at the F/O foot air-outlet.

NOTE: The blown-air stable temperature must be between 37.5 deg.C (99.50 deg.F) and 47.5 deg.C (117.50 deg.F).

(4) Set the HEATER F/O selector switch 6HE to HI.
(5) Measure the blown air temperature at the F/O foot air-outlet.

NOTE: The blown-air stable temperature must be between 50 deg.C (122.00 deg.F) and 60 deg.C (140.00 deg.F).

(6) Set the HEATER F/O selector switch 6HE to OFF.
(7) Set the HEATER CAPT selector switch 5HE to LO.
(8) Measure the blown air temperature at the Captain foot air-outlet.

NOTE: The blown-air stable temperature must be between 37.5 deg.C (99.50 deg.F) and 47.5 deg.C (117.50 deg.F).

(9) Set the HEATER CAPT selector switch 5HE to HI.
(10) Measure the blown air temperature at the Captain foot air-outlet.

NOTE: The blown-air stable temperature must be between 50 deg.C (122.00 deg.F) and 60 deg.C (140.00 deg.F).

(11) Set the HEATER CAPT selector switch 5HE to OFF.

5. Close-up
Subtask 21-41-00-860-052-A ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.
(1) On the AIR COND panel 30VU:

Release the PACK 1 and PACK 2 pushbutton switches (OFF legends on).
Set the COCKPIT temperature selector to the 12 o'clock position.

(2) Shutdown the APU:

For APU APS 3200
(Ref. AMM TASK 49-00-00-860-006)
For APU 131-9(A)
(Ref. AMM TASK 49-00-00-860-009).

(3) Do the EIS stop procedure (Ref. AMM TASK 31-60-00-860-002).
(4) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

Subtask 21-41-00-410-050-A ** ON A/C NOT FOR ALL

B. Close Access
(1) Close the access door 811.
(2) Remove the WARNING NOTICE(S).
(3) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.02 06:48:16 UTC