Deactivation of the Blower Fan - FAA Operators Only

TASK 21-26-00-040-018-A
Deactivation of the Blower Fan - FAA Operators Only

ZONE: 210
FIN: 20HQ
Task Summary

Access	Test	Specific Tools	Mhr	E/T	Nb Men
NO	YES	NO	0.5	0.5	1

1. Reason for the Job
MMEL 21-26-01
BLOWER FAN (FAA ONLY)
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

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

C. Referenced Information

REFERENCE	DESIGNATION
TASK 21-26-00-040-006-A	Blower Fan Inoperative - Check that the Air Conditioned Inlet Valve is Open
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

3. Job Set-up
Subtask 21-26-00-861-096-A

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

4. Procedure
Subtask 21-26-00-865-126-A

A. Table of the circuit breakers used in this procedure:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
123VU	AVNCS VENT/BLOWER/FAN	1HQ	AD10

Subtask 21-26-00-040-076-A

B. Deactivation of the Blower Fan - FAA Operators Only
(1) Open the air-conditioned inlet valve (Ref. AMM TASK 21-26-00-040-006).
(2) In the cockpit, on the AIR COND section of overhead panel 30VU:
(a) Make sure that the PACK 1 and PACK 2 pushbutton switches are pushed (the FAULT and OFF legends are off).
(3) In the cockpit, on the VENTILATION section of overhead panel 22VU:
(a) Make sure that the BLOWER pushbutton switch is released (the OVRD legend is on).
(4) Open, safety and tag this(these) circuit breaker(s):

1HQ.

(5) On the bottom part of the upper ECAM display unit:
(a) Make sure that the VENT EXTRACT FAULT alert does not comes into view.

5. Close-up
Subtask 21-26-00-941-106-A

A. Safety Precautions
(1) Put a WARNING NOTICE(S) in the cockpit to tell the crew that the blower fan is deactivated.
(2) Make an entry in the logbook.

Subtask 21-26-00-862-099-A

B. Aircraft Maintenance Configuration
(1) Do the EIS stop procedure (Ref. AMM TASK 31-60-00-860-002).
(2) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.02 06:10:57 UTC