D-ULPA Filter Element Replacement

TASK 47-10-41-920-001-A
D-ULPA Filter Element Replacement

WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:

THE FLIGHT CONTROLS
THE FLIGHT CONTROL SURFACES
THE LANDING GEAR AND THE RELATED DOORS
COMPONENTS THAT MOVE.

MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.

WARNING: YOU MUST PUT ON AND ATTACH A SAFETY HARNESS BEFORE YOU START WORK:

ON THE THS OR IN THE REAR FUSELAGE
ON TOP OF THE WINGS OR PYLONS.

WITHOUT A SAFETY HARNESS, YOU CAN FALL. THIS CAN KILL YOU OR CAUSE YOU INJURY.

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

ZONE: 191
FIN: 2YM ** ON A/C NOT FOR ALL

1. Reason for the Job
Refer to the MPD TASK: 470000-01
D-ULPA FILTER ELEMENT REPLACEMENT
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT)
No specific	1	EXTRACTION TOOL - SEAL
No specific	1	GLOVES - LATEX OR NITRILE
No specific	1	GOGGLES - SAFETY
No specific	1	OVERALL WITH HOOD
No specific	1	RESPIRATOR - PARTICULATE (NIOSH CLASS N, EN149:2001)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	Torque wrench: range to between 0.8 and 0.6 m.daN (70.80 and 53.10 lbf.in )
No specific	Torque wrench: range to between 3.5 and 2.5 m.daN (25.81 and 18.44 lbf.ft )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.06LCB1)	Non Hardening Jointing Putty-Medium Temp. Area Chromate Free -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
191	AIR CONDITIONING COMPT AND FAIRINGS
191BB

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
5	PACKING	AIPC 47-10-41-01-050
4	D-ULPA FILTER ELEMENT	AIPC 47-10-41-01-060
3	PACKING	AIPC 47-10-41-01-070

E. 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 47-31-34-740-001-A	BITE Test of the IGGS with Bleed Air
TASK 47-31-34-740-001-A-01	BITE Test of the IGGS without Bleed Air
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
D-ULPA Filter Element ** ON A/C NOT FOR ALL
D-ULPA Filter Element ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 47-10-41-860-050-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).

Subtask 47-10-41-865-050-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	IGGS/CTRL	7YA	N28
** ON A/C NOT FOR ALL
121VU	IGGS/CTRL	7YA	P28
** ON A/C NOT FOR ALL
122VU	CSAS / CTRL	1HW	U17

Subtask 47-10-41-010-050-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Put an ACCESS PLATFORM 2M (6 FT) in position at zone 191.
(2) Remove the quick-release access panel (access panel) 191BB (Ref. AMM TASK 53-35-13-000-002).

4. Procedure
Subtask 47-10-41-020-052-A ** ON A/C NOT FOR ALL

A. Removal of the Double Ultra Low Particulate Air (D-ULPA) Filter Element

WARNING: DO NOT GO INTO THE WORK AREA UNTIL A MINIMUM OF 5 MINUTES AFTER YOU REMOVE THE ACCESS PANEL. LET AIR FLOW THROUGH THE WORK AREA. AIR FROM THIS SYSTEM HAS A LOW OXYGEN CONTENT AND CAN CAUSE INJURY OR DEATH.

WARNING: PUT ON GLOVES, A COVERALL WITH A HOOD, GOGGLES AND A PARTICULATE RESPIRATOR BEFORE YOU TOUCH THE FILTER. THE FILTER REMOVES SMALL PARTICLES (SMOKE, DUST, LINT, FIBERS, POLLEN) AND INFECTIOUS MATERIALS (BACTERIA, VIRUSES, MOLD SPORES, FUNGI) FROM THE AIR. THESE MATERIALS CAN CAUSE ILLNESS.

WARNING: PUT ALL AIR FILTERS THAT YOU REMOVE FROM THE AIRCRAFT INTO PLASTIC DISPOSAL BAGS. AIR FILTERS CAN CONTAIN INFECTIOUS MATERIALS WHICH CAN CAUSE ILLNESS. OBEY AIRLINE POLICY AND LOCAL HEALTH DEPARTMENT AND LAW ENFORCEMENT REGULATIONS FOR DISPOSAL OF INFECTIOUS MATERIALS.

CAUTION: BE CAREFUL WHEN YOU TOUCH THIS ASSEMBLY. IT HAS PRECISION- TOLERANCE COMPONENTS WITH VERY POLISHED SURFACES. IF YOU ARE NOT CAREFUL, IT IS VERY EASY TO CAUSE DAMAGE TO THESE COMPONENTS (INTERNAL CONTAMINATION, EXTERNAL IMPACT DAMAGE).

CAUTION: REMOVE OR INSTALL PACKING SEALS CAREFULLY. DAMAGE TO SEALS OR SEALING SURFACES CAN CAUSE LEAKAGE AND CORROSION.

(1) Use the equipment that follows:

RESPIRATOR - PARTICULATE (NIOSH CLASS N, EN149:2001)
GOGGLES - SAFETY
GLOVES - LATEX OR NITRILE
OVERALL WITH HOOD.

(2) If the insulation jacket is installed on the filter assembly (1), remove it.
(3) Remove the bolt (7).
(4) Turn the filter bowl (6) counterclockwise to remove it from the filter head (2).
(5) Use a EXTRACTION TOOL - SEAL to remove and discard the packing (5) from the filter head (2).
(6) Remove the D-ULPA filter element (4) with its attached spring.

NOTE: It is not possible to clean a D-ULPA filter element (4) and use it again.

NOTE: The spring is permanently attached to the filter element (4). New springs are supplied with replacement filter elements.

(7) Remove and discard the packing (3).

Subtask 47-10-41-020-052-B ** ON A/C NOT FOR ALL

A. Removal of the Double Ultra Low Particulate Air (D-ULPA) Filter Element

CAUTION: REMOVE OR INSTALL PACKING SEALS CAREFULLY. DAMAGE TO SEALS OR SEALING SURFACES CAN CAUSE LEAKAGE AND CORROSION.

(1) Use the equipment that follows:

RESPIRATOR - PARTICULATE (NIOSH CLASS N, EN149:2001),
GOGGLES - SAFETY,
GLOVES - LATEX OR NITRILE,
and
OVERALL WITH HOOD.

(2) Remove the bolt (7).
(3) Turn the filter bowl (6) counterclockwise to remove it from the filter head (2).
(4) Use a EXTRACTION TOOL - SEAL to remove and discard the packing (5) from the filter head (2).
(5) Remove the D-ULPA filter element (4) with its attached spring.

NOTE: It is not possible to clean a D-ULPA filter element (4) and use it again.

NOTE: The spring is permanently attached to the filter element (4). New springs are supplied with replacement filter elements.

(6) Remove and discard the packing (3).

Subtask 47-10-41-420-052-A ** ON A/C NOT FOR ALL

B. Installation of the D-ULPA Filter Element

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

CAUTION: REMOVE OR INSTALL PACKING SEALS CAREFULLY. DAMAGE TO SEALS OR SEALING SURFACES CAN CAUSE LEAKAGE AND CORROSION.

(1) Install the new AIPC 47-10-41-01-070 PACKING (3) on a new AIPC 47-10-41-01-060 D-ULPA FILTER ELEMENT (4).
(2) Turn the D-ULPA filter element (4) clockwise to install it in the filter head (2).

NOTE: The spring is permanently attached to the filter element (4). New springs are supplied with replacement filter elements.

(3) Push down on the D-ULPA filter element (4) to make sure it is fully installed in the filter head (2). Make sure that the filter element with attached spring is installed properly.
(4) Install the new AIPC 47-10-41-01-050 PACKING (5) on the filter head (2).
(5) Install the filter bowl (6) on the filter head (2). Make sure that both parts are aligned. Do not move or cause damage to the packing (5).
(6) TORQUE the filter bowl (6) to between 3.5 and 2.5 m.daN (25.81 and 18.44 lbf.ft )

.
(7) Apply Non Hardening Jointing Putty-Medium Temp. Area Chromate Free - (Material No.06LCB1) on the thread of the bolt (7).
(8) Install the bolt (7).
(9) TORQUE the bolt (7) to between 0.8 and 0.6 m.daN (70.80 and 53.10 lbf.in )

.
(10) Make sure that the work area is clean and clear of tools and other items.
(11) In the subsequent subtask, make sure that you close the CB 1HW first.

Subtask 47-10-41-865-052-A ** ON A/C NOT FOR ALL

C. 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
121VU	IGGS/CTRL	7YA	N28
** ON A/C NOT FOR ALL
121VU	IGGS/CTRL	7YA	P28
** ON A/C NOT FOR ALL
122VU	CSAS / CTRL	1HW	U17

Subtask 47-10-41-790-050-A ** ON A/C NOT FOR ALL

WARNING: BE CAREFUL WHEN YOU DO THE BITE TEST. AIR FROM THIS SYSTEM HAS A LOW OXYGEN CONTENT AND CAN CAUSE INJURY OR DEATH.

D. Leak Test

NOTE: Do the two subsequent steps at the same time. Two persons are necessary to do these steps.

(1) Do the BITE Test of the IGGS with Bleed Air (Ref. AMM TASK 47-31-34-740-001).
(2) Examine the joint between the filter bowl (6) and the filter head (2) for air leakage.

NOTE: Air leaks are not permitted.

5. Close-up
Subtask 47-10-41-410-050-A ** ON A/C NOT FOR ALL

A. Close Access
(1) If applicable, install the insulation jacket on the filter assembly (1).
(2) Make sure that the work area is clean and clear of tools and other items.
(3) Install access panel 191BB (Ref. AMM TASK 53-35-13-400-002).
(4) Remove the access platform(s).

Subtask 47-10-41-410-050-B ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install access panel 191BB (Ref. AMM TASK 53-35-13-400-002).

Subtask 47-10-41-860-051-A ** ON A/C NOT FOR ALL

B. Put the aircraft back to its initial configuration.
(1) De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).
(2) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(3) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.02 06:26:17 UTC