Decontamination of the Bleed-Air Ducting System Disconnected at HP Ground Connector with Engine 1 Bleed Pressure

TASK 36-11-00-615-804-A
Decontamination of the Bleed-Air Ducting System Disconnected at HP Ground Connector with Engine 1 Bleed Pressure

WARNING: MAKE SURE THAT WHEN THE ENGINES OPERATE ON THE GROUND:

NO PERSONS GO WHERE THE AIRCRAFT CAN CAUSE THEM INJURY OR CAN KILL THEM
NO OBJECTS STAY WHERE THE ENGINES CAN BLOW THEM AWAY OR WHERE THEY CAN BE PULLED INTO THE ENGINES BY SUCTION.

WARNING: BE CAREFUL WHEN THE DUCTS ARE DISCONNECTED THE TEMPERATURE OF THE EXHAUST GASES FROM THE OPEN ENDS OF THE DISCONNECTED DUCTS CAN BE AS HIGH AS 270 DEG.C (518 DEG.F). THE HOT GASES CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

WARNING: MAKE SURE THAT THE PNEUMATIC SYSTEM IS DEPRESSURIZED BEFORE YOU START WORK. PRESSURIZED AIR CAN CAUSE INJURY TO PERSONNEL.

WARNING: ALWAYS USE APPLICABLE GLOVES TO TOUCH HOT PARTS. HOT PARTS CAN CAUSE INJURY TO PERSONS.

ZONE: 191

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

REFERENCE	QTY	DESIGNATION
No specific	AR	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	1	AIR START COUPLING
No specific	AR	CAP - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)
C21006-7	1	DEACTIVATOR - CHECK VALVE

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
191	AIR CONDITIONING COMPT AND FAIRINGS
191BB, 191DB, 191KB, 811

C. Referenced Information

REFERENCE	DESIGNATION
TASK 21-51-00-710-002-A	Operational Test of the Flow Control and Indicating System
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 52-41-00-010-002-A	Open the Avionics Compartment Doors for Access
TASK 52-41-00-410-002-A	Close the Avionics Compartment Doors after Access
TASK 53-35-13-000-002-A	Removal of the Quick-Release Access Panels from the Belly Fairing Structure
TASK 53-35-13-400-002-A	Installation of the Quick-Release Access Panels on the Belly Fairing Structure
TASK 71-00-00-860-814-A	Shutdown of the Engine
TASK 71-00-00-860-823-A	Start the Engine (Normal Automatic Start)
TASK 71-00-00-910-804-A	General Warnings and Cautions and Related Safety Data
Bleed-Air Ducting System - Location and Detail
HP Ground Connector
BLEED Page

3. Job Set-up
Subtask 36-11-00-941-192-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) Put the aircraft in the engine run-up condition.
(2) Obey the safety precautions during the engine ground operations (Ref. AMM TASK 71-00-00-910-804).

Subtask 36-11-00-010-273-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Put an ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position below access door 811.
(2) Open access door 811 (Ref. AMM TASK 52-41-00-010-002).
(3) Put a WARNING NOTICE(S) in position to tell persons not to close access door 811.

Subtask 36-11-00-865-215-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
49VU	AIR BLEED/ENG 1/CTL	2HA1	D11
122VU	AIR BLEED/ENG 1/MONG	3HA1	Z23
122VU	AIR BLEED/X FEED VALVE/NORM	1HV	Z20

Subtask 36-11-00-865-230-A ** ON A/C NOT FOR ALL

D. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
122VU	AIR COND/TEMP CTL SYS 2/CHAN A/115VAC	53HH	W22
122VU	AIR COND/TEMP CTL SYS 2/CHAN A/28VDC	55HH	W21
122VU	AIR COND/TEMP CTL SYS 2/CHAN B/28VDC	56HH	Y21
122VU	AIR COND/TEMP CTL SYS 2/CHAN B/115VAC	54HH	Y20

Subtask 36-11-00-860-242-A ** ON A/C NOT FOR ALL

E. 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).
(3) In the cockpit, on AIR COND panel 30VU:
(a) Make sure that the ENG 1(2) BLEED pushbutton-switch is released (the OFF legend is on).
(b) Make sure that the APU BLEED pushbutton-switch is released (the ON legend is off).
(c) Make sure that the PACK 1 and 2 pushbutton switches are released (the OFF legends are on).
(d) Make sure that the PACK FLOW selector-switch is set to LO.
(e) Make sure that the X BLEED selector-switch is in the AUTO position.

Subtask 36-11-00-480-150-A ** ON A/C NOT FOR ALL

F. Preparation for Cleaning of the Bleed-Air Ducting System
(1) Disconnect the electrical connectors from the Flow Control Valve (FCV) as follows:
(a) Remove access panels 191BB and 191KB (Ref. AMM TASK 53-35-13-000-002).

CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.

(b) Disconnect the electrical connectors.
(c) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(2) Start engine 1 and keep the engine RPM to idle (Ref. AMM TASK 71-00-00-860-823).
(3) Install the C21006-7 DEACTIVATOR - CHECK VALVE as follows:
(a) In the cockpit, on AIR COND panel 30VU:
1 Make sure that the ENG 1(2) BLEED pushbutton-switch is released (the OFF legend is on).
2 Make sure that the APU BLEED pushbutton-switch is released (the ON legend is off).
(b) On the ECAM control panel, push the BLEED key:
1 On the SD, the BLEED page comes into view.
2 On the BLEED page, do a check of:

The pressure value in the duct that reads the bleed pressure sensor
The temperature value in the duct that reads the bleed temperature sensor.

3 On the BLEED page, make sure that the Pressure Regulating Valve (PRV) is closed.
(c) When the pressure and temperature values in the duct are almost the same as external pressure and temperature values:
1 Make sure that access door 191DB is open.
2 Install the C21006-7 DEACTIVATOR - CHECK VALVE and the AIR START COUPLING to the HP ground connector (7300HM).

4. Procedure
Subtask 36-11-00-615-059-A ** ON A/C NOT FOR ALL

A. Cleaning of the Odor Smell in the Bleed-Air Ducting System
(1) In the cockpit, on AIR COND panel 30VU:
(a) Set the PACK 1 pushbutton switch to the pushed position (the OFF legend is off).
(b) Set the ENG 1 BLEED pushbutton-switch to the pushed position (the OFF legend is off).
(2) On the ECAM control panel, push the BLEED key:
(a) On the SD, the BLEED page comes into view.
(b) Make sure that the PRV is open.
(3) On the ECAM display, make sure that the engine bleed temperature is 200 -10 DEG.C or +10 DEG.C (392 -18 DEG.F or +18 DEG.F):
(a) If necessary, slowly push the ENGINE-1 thrust lever to make the engine bleed temperature to 200 -10 DEG.C or +10 DEG.C (392 -18 DEG.F or +18 DEG.F). Do not reach more than 40% of N1.
(4) Wait for a minimum of 15 minutes.
(5) The ECAM control panel can show abnormal BLEED and pack fault messages.

NOTE: The system operates correctly and it is not necessary to do the related troubleshooting procedure at this step.

(6) Slowly pull the ENGINE-1 thrust lever to the idle position.
(7) In the cockpit, on AIR COND panel 30VU:
(a) Set the PACK 1 pushbutton-switch to the released position (the OFF legend is on).
(b) Set the ENG 1 BLEED pushbutton-switch to the released position (the OFF legend is on).
(8) Stop engine 1 (Ref. AMM TASK 71-00-00-860-814).

5. Close-up
Subtask 36-11-00-080-127-A ** ON A/C NOT FOR ALL

A. Put the aircraft back to its initial configuration.
(1) Remove the C21006-7 DEACTIVATOR - CHECK VALVE as follows:
(a) Remove the AIR START COUPLING from the HP ground connector (7300HM).
(b) Remove the C21006-7 DEACTIVATOR - CHECK VALVE from the HP ground connector (7300HM):
1 Make sure that the HP ground connector is in the blocked position.
(c) Close access door 191DB.
(2) Connect the electrical connectors to the FCV as follows:
(a) Remove the CAP-BLANKING from each electrical connector and receptacle.

CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.

(b) Connect the electrical connectors.
(c) Install access panels 191BB and 191KB (Ref. AMM TASK 53-35-13-400-002).
(3) Make sure that the work area is clean and clear of tools and other items.

Subtask 36-11-00-865-231-A ** ON A/C NOT FOR ALL

B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
122VU	AIR COND/TEMP CTL SYS 2/CHAN A/115VAC	53HH	W22
122VU	AIR COND/TEMP CTL SYS 2/CHAN A/28VDC	55HH	W21
122VU	AIR COND/TEMP CTL SYS 2/CHAN B/28VDC	56HH	Y21
122VU	AIR COND/TEMP CTL SYS 2/CHAN B/115VAC	54HH	Y20

Subtask 36-11-00-710-067-A ** ON A/C NOT FOR ALL

C. Operational Test
(1) Do an operational test of the flow control and indicating system (Ref. AMM TASK 21-51-00-710-002).

Subtask 36-11-00-860-244-A ** ON A/C NOT FOR ALL

D. Aircraft Maintenance Configuration
(1) Do the EIS stop procedure
(Ref. AMM TASK 31-60-00-860-002).
(2) On the ECAM control panel, set the UPPER DISPLAY and LOWER DISPLAY potentiometers to OFF.
(3) De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

Subtask 36-11-00-410-269-A ** ON A/C NOT FOR ALL

E. Close Access
(1) Remove the WARNING NOTICE(S).
(2) Close access door 811 (Ref. AMM TASK 52-41-00-410-002).
(3) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.01 01:06:05 UTC