DOC AIRBUS | AMM A320FWashing of the Engine Gas Path with Cleaning Agent [CFMB]
TASK 72-00-00-100-028-A
Washing of the Engine Gas Path with Cleaning Agent
Engine washing with cleaning agent is preferred when organic debris or oil deposits are present or remaining EGT margin is less than 5 deg. C.
A. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
C. Work Zones and Access Panels
D. Referenced Information
3. Job Set-up
Subtask 72-00-00-941-101-A ** ON A/C NOT FOR ALL
Subtask 72-00-00-110-079-A ** ON A/C NOT FOR ALL
Subtask 72-00-00-869-084-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 12:59:38 UTC
Washing of the Engine Gas Path with Cleaning Agent
WARNING:
BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.
CAUTION:
IF CLEANING AGENT IS USED, PROPER AIRCRAFT MAINTENANCE CONFIGURATION, ENGINE RINSING AND POST ENGINE WASH TEST MUST BE COMPLETED TO PREVENT THE POSSIBILITY OF FUMES IN THE CABIN WHEN AIRCRAFT RESUMES REVENUE FLIGHT OPERATION.
1. Reason for the JobEngine washing with cleaning agent is preferred when organic debris or oil deposits are present or remaining EGT margin is less than 5 deg. C.
NOTE: When cleaning agent is used, proper Aircraft Maintenance Configuration, engine rinsing and post engine wash test must be completed to prevent the possibility of fumes in the cabin when Aircraft resumes revenue flight operation.
NOTE: The engine bleed system must be operative prior to proceeding with engine washing with cleaning agent. Check that there is no failure message on the engine bleed system.
2. Job Set-up InformationA. Fixtures, Tools, Test and Support Equipment
B. Consumable Materials
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.CP8001) | lockwire 0.032 in. (0.8 mm) dia. |
| (Material No.CP8002) | lockwire 0.032 in. (0.8 mm) dia |
| ZONE/ACCESS | ZONE DESCRIPTION |
|---|---|
| FOR [1000EM1] (ENGINE-1) | |
| 437AL, 438AR | |
| FOR [1000EM2] (ENGINE-2) | |
| 447AL, 448AR | |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 12-13-79-610-002-A | Check oil level and replenish Check Pop Out Indicator of EMCD (Electrical Master Chip Detector) |
| TASK 12-13-79-610-002-A-01 | Check oil level and replenish (Pressure Filling) |
| TASK 21-00-00-615-803-A | Level B Decontamination of the Environmental Control System (ECS) |
| 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 71-00-00-710-001-B | Dry Motoring Check |
| TASK 71-00-00-710-003-B | Engine Automatic Start |
| TASK 71-00-00-710-028-B | Engine Shutdown |
| TASK 71-00-00-710-802-A | Water Wash Crank |
| TASK 71-13-00-010-040-B | Opening of the Fan Cowl Doors |
| TASK 71-13-00-410-040-B | Closing of the Fan Cowl Doors |
| TASK 72-00-00-100-008-A | Engine Washing Requirements |
Rigid Anti-Ice Muscle LineSubtask 72-00-00-941-101-A ** ON A/C NOT FOR ALL
A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).
Subtask 72-00-00-010-138-A ** ON A/C NOT FOR ALL (1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).
B. Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-040):
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR
4. Procedure(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR
Subtask 72-00-00-110-079-A ** ON A/C NOT FOR ALL
A. Preparation of the Engine for Washing
(1) For engine washing requirements (Ref. AMM TASK 72-00-00-100-008).
(3) Plug the open tubes and ports of the ECU with standard protective covers.
(4) Disconnect the flexible hose (25) from the nacelle anti-ice (NAI) valve.
(6) Prepare an anti-freeze mixture, if necessary, as defined in engine washing requirements (Ref. AMM TASK 72-00-00-100-008).
(7) Servicing the oil tank:
(a) Check oil level of the engine (Ref. AMM TASK 12-13-79-610-002).
Subtask 72-00-00-410-137-A ** ON A/C NOT FOR ALL (1) For engine washing requirements (Ref. AMM TASK 72-00-00-100-008).
NOTE: The disconnection of the P25 line is only available for engines equipped with the PMUX option.
(2) Disconnect PS3 line and P25 line (if installed) from the Electronic Control Unit (ECU). (3) Plug the open tubes and ports of the ECU with standard protective covers.
(4) Disconnect the flexible hose (25) from the nacelle anti-ice (NAI) valve.
NOTE: Let the flexible hose free (not plugged) during the washing of the engine.
(5) Install a standard protective cover on the anti-ice servo pressure line port of the NAI valve. (6) Prepare an anti-freeze mixture, if necessary, as defined in engine washing requirements (Ref. AMM TASK 72-00-00-100-008).
(7) Servicing the oil tank:
(a) Check oil level of the engine (Ref. AMM TASK 12-13-79-610-002).
NOTE: The oil tank must be topped off up to the window mark.
B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
Subtask 72-00-00-861-053-A ** ON A/C NOT FOR ALL Subtask 72-00-00-860-052-A ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
D. Aircraft Maintenance Configuration
(1) On the overhead control and indicating panel 25VU, make sure that the ON legend of the ANTI-ICE/ENG 1(2) pushbutton switch is off.
(2) On the AIR COND panel 30VU, make sure that the OFF legend of the ENG 1(2) BLEED pushbutton switch is on.
(3) On the AIR COND panel 30VU, make sure that the OFF legends of the PACK 1 and the PACK 2 pushbutton switches are on.
Subtask 72-00-00-110-081-A ** ON A/C NOT FOR ALL (1) On the overhead control and indicating panel 25VU, make sure that the ON legend of the ANTI-ICE/ENG 1(2) pushbutton switch is off.
(2) On the AIR COND panel 30VU, make sure that the OFF legend of the ENG 1(2) BLEED pushbutton switch is on.
(3) On the AIR COND panel 30VU, make sure that the OFF legends of the PACK 1 and the PACK 2 pushbutton switches are on.
E. Engine Washing
(3) Stop the cleaning solution injection before the end of the engine motoring.
(4) After two minutes in motoring, release the ENG/MAN START/1 (2) pushbutton switch.
(5) Let the engine soak for 5 minutes.
(6) Repeat steps (1) to (5) if extreme organic debris or oil deposits were present or if remaining EGT margin prior to the water wash was less than 10 deg. C.
Subtask 72-00-00-110-082-A ** ON A/C NOT FOR ALL CAUTION:
DO NOT WASH AN ENGINE WHICH HAS BEEN EXPOSED TO DRY CHEMICAL FIRE EXTINGUISHING AGENTS.
CAUTION:
DO NOT WASH AN ENGINE UNLESS THE EGT IS BELOW 150 DEG.F (66 DEG.C).
CAUTION:
DO NOT WASH AN ENGINE AT TEMPERATURE BELOW 14 DEG.F (-10 DEG.C).
CAUTION:
THE FUEL PUMP AND HYDRO-MECHANICAL UNIT (HMU) ARE FUEL LUBRICATED. DO NOT MOTOR, START, OR OPERATE ENGINE UNLESS A POSITIVE FUEL INLET PRESSURE IS INDICATED ON THE LOWER ECAM (FUEL SYSTEM PAGE). DAMAGE TO COMPONENTS MAY RESULT.
CAUTION:
DO NOT EXCEED THE STARTER DUTY CYCLE. DAMAGE TO THE STARTER CAN OCCUR.
CAUTION:
MAKE SURE THE N1 ROTOR TURNS FREELY THROUGHOUT WASHING TO PREVENT OIL SYSTEM CONTAMINATION.
CAUTION:
DO NOT APPLY WATER AT MORE THAN 6 US GAL (23 LITERS) PER MINUTE. IF YOU DO, ENGINE DAMAGE CAN OCCUR.
(1) Dry motor the engine for two minutes (Ref. AMM TASK 71-00-00-710-001) or do the water wash crank (Ref. AMM TASK 71-00-00-710-802). NOTE: The water wash crank is an alternate procedure available for engine with FADEC Post 5BS2 software. This task will optimize the wash procedure and will put the valves in position better.
(2) After 30 seconds in motoring, inject the cleaning solution at 1 o'clock position on the Low Pressure Compressor (LPC) inlet through the fan blades (or at the LP compressor inlet if a specific rig is used). (3) Stop the cleaning solution injection before the end of the engine motoring.
(4) After two minutes in motoring, release the ENG/MAN START/1 (2) pushbutton switch.
(5) Let the engine soak for 5 minutes.
(6) Repeat steps (1) to (5) if extreme organic debris or oil deposits were present or if remaining EGT margin prior to the water wash was less than 10 deg. C.
F. Engine Rinsing
(2) After 10 seconds in motoring with positive fan rotation, inject the water at 1 o'clock position on the Low Pressure Compressor (LPC) inlet through the fan blades (or at the LP compressor inlet if a specific rig is used).
(3) Stop the water injection before the end of the engine motoring.
(4) Let the engine soak for 5 minutes.
(5) Dry motor the engine again for two minutes (Ref. AMM TASK 71-00-00-710-001).
(6) After 10 seconds in motoring with positive fan rotation, inject the water, at 1 o'clock position on the Low Pressure Compressor (LPC) inlet through the fan blades (or at the LP compressor inlet if a specific rig is used).
(7) Stop the water injection before the end of the engine motoring.
(8) Let the engine soak for 5 minutes.
(9) Dry motor the engine again for two minutes (Ref. AMM TASK 71-00-00-710-001).
(10) After 10 seconds in motoring with positive fan rotation, inject the water, at 1 o'clock position on the Low Pressure Compressor (LPC) inlet through the fan blades (or at the LP compressor inlet if a specific rig is used).
(11) Stop the water injection before the end of the engine motoring.
(12) If water still drains out of the disconnected rigid anti-ice muscle line, dry motor the engine again until no water drains out (Ref. AMM TASK 71-00-00-710-001).
Subtask 72-00-00-110-082-B ** ON A/C NOT FOR ALL CAUTION:
DO NOT RINSE THE ENGINE EXPOSED TO DRY CHEMICAL EXTINGUISHING AGENT.
DO NOT RINSE THE ENGINE UNLESS THE EGT IS BELOW 150 DEG.F (66 DEG.C.).
DO NOT RINSE THE ENGINE AT TEMPERATURE BELOW 14 DEG. F (-10 DEG.C.).
CAUTION:
THE FUEL PUMP AND HYDRO-MECHANICAL UNIT (HMU) ARE FUEL LUBRICATED. DO NOT MOTOR, START, OR OPERATE ENGINE UNLESS A POSITIVE FUEL INLET PRESSURE IS INDICATED ON THE LOWER ECAM (FUEL SYSTEM PAGE). DAMAGE TO COMPONENTS MAY RESULT.
CAUTION:
DO NOT EXCEED THE STARTER DUTY CYCLE. DAMAGE TO THE STARTER CAN OCCUR.
CAUTION:
MAKE SURE THAT THE N1 ROTOR TURNS FREELY THROUGHOUT RINSING TO PREVENT OIL SYSTEM CONTAMINATION.
CAUTION:
DO NOT APPLY WATER AT MORE THAN 6 US GAL (23 LITERS) PER MINUTE. IF YOU DO, ENGINE DAMAGE CAN OCCUR.
(1) Dry motor the engine for two minutes (Ref. AMM TASK 71-00-00-710-001). (2) After 10 seconds in motoring with positive fan rotation, inject the water at 1 o'clock position on the Low Pressure Compressor (LPC) inlet through the fan blades (or at the LP compressor inlet if a specific rig is used).
(3) Stop the water injection before the end of the engine motoring.
(4) Let the engine soak for 5 minutes.
(5) Dry motor the engine again for two minutes (Ref. AMM TASK 71-00-00-710-001).
(6) After 10 seconds in motoring with positive fan rotation, inject the water, at 1 o'clock position on the Low Pressure Compressor (LPC) inlet through the fan blades (or at the LP compressor inlet if a specific rig is used).
(7) Stop the water injection before the end of the engine motoring.
(8) Let the engine soak for 5 minutes.
(9) Dry motor the engine again for two minutes (Ref. AMM TASK 71-00-00-710-001).
(10) After 10 seconds in motoring with positive fan rotation, inject the water, at 1 o'clock position on the Low Pressure Compressor (LPC) inlet through the fan blades (or at the LP compressor inlet if a specific rig is used).
(11) Stop the water injection before the end of the engine motoring.
(12) If water still drains out of the disconnected rigid anti-ice muscle line, dry motor the engine again until no water drains out (Ref. AMM TASK 71-00-00-710-001).
F. Engine Rinsing
(3) Stop the water injection before the end of the engine motoring.
(4) Let the engine soak for 5 minutes.
(5) Dry motor the engine again for two minutes (Ref. AMM TASK 71-00-00-710-001).
(6) After 10 seconds in motoring with positive fan rotation, inject the water, at 1 o'clock position on the Low Pressure Compressor (LPC) inlet through the fan blades (or at the LP compressor inlet if a specific rig is used).
(7) Stop the water injection before the end of the engine motoring.
(8) Let the engine soak for 5 minutes.
(9) Dry motor the engine again for two minutes (Ref. AMM TASK 71-00-00-710-001).
(10) After 10 seconds in motoring with positive fan rotation, inject the water, at 1 o'clock position on the Low Pressure Compressor (LPC) inlet through the fan blades (or at the LP compressor inlet if a specific rig is used).
(11) Stop the water injection before the end of the engine motoring.
(12) If water still drains out of the disconnected rigid anti-ice muscle line, dry motor the engine again until no water drains out (Ref. AMM TASK 71-00-00-710-001).
Subtask 72-00-00-010-139-A ** ON A/C NOT FOR ALL CAUTION:
DO NOT RINSE THE ENGINE EXPOSED TO DRY CHEMICAL EXTINGUISHING AGENT.
DO NOT RINSE THE ENGINE UNLESS THE EGT IS BELOW 150 DEG.F (66 DEG.C.).
DO NOT RINSE THE ENGINE AT TEMPERATURE BELOW 14 DEG. F (-10 DEG.C.).
CAUTION:
THE FUEL PUMP AND HYDRO-MECHANICAL UNIT (HMU) ARE FUEL LUBRICATED. DO NOT MOTOR, START, OR OPERATE ENGINE UNLESS A POSITIVE FUEL INLET PRESSURE IS INDICATED ON THE LOWER ECAM (FUEL SYSTEM PAGE). DAMAGE TO COMPONENTS MAY RESULT.
CAUTION:
DO NOT EXCEED THE STARTER DUTY CYCLE. DAMAGE TO THE STARTER CAN OCCUR.
CAUTION:
MAKE SURE THAT THE N1 ROTOR TURNS FREELY THROUGHOUT RINSING TO PREVENT OIL SYSTEM CONTAMINATION.
CAUTION:
DO NOT APPLY WATER AT MORE THAN 6 US GAL (23 LITERS) PER MINUTE. IF YOU DO, ENGINE DAMAGE CAN OCCUR.
(1) Dry motor the engine for two minutes (Ref. AMM TASK 71-00-00-710-001) or do the water wash crank (Ref. AMM TASK 71-00-00-710-802). NOTE: The water Wash Crank is an alternate procedure available for FADEC POST 5BS2 software. This task is to optimize the washing procedure by positioning the valves in the better way.
(2) After 10 seconds in motoring with positive fan rotation, inject the water at 1 o'clock position on the Low Pressure Compressor (LPC) inlet through the fan blades (or at the LP compressor inlet if a specific rig is used). (3) Stop the water injection before the end of the engine motoring.
(4) Let the engine soak for 5 minutes.
(5) Dry motor the engine again for two minutes (Ref. AMM TASK 71-00-00-710-001).
(6) After 10 seconds in motoring with positive fan rotation, inject the water, at 1 o'clock position on the Low Pressure Compressor (LPC) inlet through the fan blades (or at the LP compressor inlet if a specific rig is used).
(7) Stop the water injection before the end of the engine motoring.
(8) Let the engine soak for 5 minutes.
(9) Dry motor the engine again for two minutes (Ref. AMM TASK 71-00-00-710-001).
(10) After 10 seconds in motoring with positive fan rotation, inject the water, at 1 o'clock position on the Low Pressure Compressor (LPC) inlet through the fan blades (or at the LP compressor inlet if a specific rig is used).
(11) Stop the water injection before the end of the engine motoring.
(12) If water still drains out of the disconnected rigid anti-ice muscle line, dry motor the engine again until no water drains out (Ref. AMM TASK 71-00-00-710-001).
G. Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-040):
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR
Subtask 72-00-00-420-064-A ** ON A/C NOT FOR ALL (1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR
H. Installation of PS3 Line and P25 Line (if installed)
(2) Blow PS3 and P25 lines clear of water with compressed air or nitrogen.
(a) Do a visual inspection to make sure that the PS3 line weep-hole is clear and there is no blockage.
(3) Connect PS3 line to ECU, TORQUE to between 300 and 270 lbf.in (3.39 and 3.05 m.daN )
and safety with CP8001 lockwire 0.032 in. (0.8 mm) dia. CP8002 lockwire 0.032 in. (0.8 mm) dia
(4) Connect P25 line to ECU, TORQUE to between 200 and 180 lbf.in (2.26 and 2.03 m.daN ) and safety with CP8001 lockwire 0.032 in. (0.8 mm) dia. CP8002 lockwire 0.032 in. (0.8 mm) dia
(5) Remove the standard protective cover from the nacelle anti-ice port of the NAI valve.
(6) Connect the flexible hose (25) to nacelle anti-ice valve, TORQUE the flexible hose coupling to between 160 and 150 lbf.in (1.81 and 1.70 m.daN ).
Subtask 72-00-00-410-138-A ** ON A/C NOT FOR ALL WARNING:
USE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.
CAUTION:
DO NOT BLOW COMPRESSED AIR OR NITROGEN INTO THE ECU AS DAMAGE TO THE ECU CAN OCCUR.
CAUTION:
DURING INSTALLATION, MAKE SURE THAT THE PS3 LINE DOES NOT TOUCH THE LOWER STARTER DUCT OR OTHER PARTS IN THIS AREA. IF IT DOES, CHAFING OF THE PS3 HOSE CAN OCCUR.
(1) Remove the plugs from the PS3 and P25 lines and from the ECU. (2) Blow PS3 and P25 lines clear of water with compressed air or nitrogen.
(a) Do a visual inspection to make sure that the PS3 line weep-hole is clear and there is no blockage.
(3) Connect PS3 line to ECU, TORQUE to between 300 and 270 lbf.in (3.39 and 3.05 m.daN )
and safety with (4) Connect P25 line to ECU, TORQUE to between 200 and 180 lbf.in (2.26 and 2.03 m.daN )
and safety with (5) Remove the standard protective cover from the nacelle anti-ice port of the NAI valve.
(6) Connect the flexible hose (25) to nacelle anti-ice valve, TORQUE the flexible hose coupling to between 160 and 150 lbf.in (1.81 and 1.70 m.daN )
. I. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
Subtask 72-00-00-620-065-A ** ON A/C NOT FOR ALL (1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-040):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR
J. Post-Engine Wash Test
(b) After five minutes from the engine start, do the following:
1 Press the ANTI-ICE/ENG 1(2) pushbutton switch to operate the engine anti-ice system.
2 Make sure that the ON legend of the ANTI-ICE/ENG 1(2) pushbutton switch comes on when the engine anti-ice system operates.
4 Make sure that the OFF legend of the ENG 1(2) BLEED pushbutton switch goes off when the engine bleed anti-ice system operates.
5 Press the ANTI-ICE/WING pushbutton switch to operate the WAI system.
6 Make sure that the ON legend of the ANTI-ICE/WING pushbutton switch comes on when the WAI system operates.
7 Increase and stabilize the engine thrust to at least 60 percent Fan (N1) Speed until High Pressure Valve (HPV) is closed while Pressure Regulating Valve (PRV) is open on the ECAM BLEED page.
8 Make sure that the HPV is closed and the PRV is open on the ECAM BLEED page with the engine running at this speed.
(c) Let the engine run this stabilized Fan (N1) Speed for ten minutes.
(d) Pull the throttle to stabilize the engine thrust at idle for five minutes.
(e) After 20 minutes from the engine start, do the following:
1 Press the ANTI-ICE/ENG and ANTI-ICE/WING pushbutton switches to turn off both anti-ice systems.
2 Make sure that the ON legends of the ANTI-ICE/ENG and ANTI-ICE/WING pushbutton switches go off.
3 Turn the cross bleed valve rotary selector to the AUTO position.
4 Press the PACK 1 (2) pushbutton switch to operate the air conditioning pack.
5 Make sure that the OFF legend of the pushbutton switch goes off.
6 Check for evidence of cleaning agent or anti-freeze mixture odor/smoke in the cabin.
5. Close-upNOTE: The aim of this post-engine wash test is:
(1) On AIR COND panel 30VU, make sure that: - To purge water from the oil system in order to prevent potential bearing/sump corrosion/deterioration
- To prevent fumes in the cockpit and in the cabin when the airplane is put back into service.
- The OFF legends of the PACK 1 and the PACK 2 pushbutton switches are set to ON before you start the procedure.
- The cross bleed valve rotary selector is in the OPEN position.
NOTE: The APU Bleed Valve must be closed (the ON legend of the APU pushbutton switch is off) after the engine start, to avoid the supply of the air to the Wing Anti-Ice (WAI) systems from the APU.
NOTE: This engine run is done to ensure that the bleed system is free from contaminants. Smoke/smell in the cabin can result if contaminants enter the bleed system.
(a) Let the engine run at idle for five minutes. (b) After five minutes from the engine start, do the following:
1 Press the ANTI-ICE/ENG 1(2) pushbutton switch to operate the engine anti-ice system.
2 Make sure that the ON legend of the ANTI-ICE/ENG 1(2) pushbutton switch comes on when the engine anti-ice system operates.
CAUTION:
AFTER 30 MINUTES FROM ENGINES START, ANTI-ICE/ENG 1(2) PUSHBUTTON SWITCH SHOULD BE PRESSED OFF TO DEACTIVATE THE ENGINE ANTI-ICE SYSTEM. IF NOT, DAMAGE TO THE ENGINE COULD OCCUR.
3 Press the ENG 1(2) BLEED pushbutton switch to operate the engine bleed system. 4 Make sure that the OFF legend of the ENG 1(2) BLEED pushbutton switch goes off when the engine bleed anti-ice system operates.
5 Press the ANTI-ICE/WING pushbutton switch to operate the WAI system.
6 Make sure that the ON legend of the ANTI-ICE/WING pushbutton switch comes on when the WAI system operates.
7 Increase and stabilize the engine thrust to at least 60 percent Fan (N1) Speed until High Pressure Valve (HPV) is closed while Pressure Regulating Valve (PRV) is open on the ECAM BLEED page.
8 Make sure that the HPV is closed and the PRV is open on the ECAM BLEED page with the engine running at this speed.
(c) Let the engine run this stabilized Fan (N1) Speed for ten minutes.
(d) Pull the throttle to stabilize the engine thrust at idle for five minutes.
(e) After 20 minutes from the engine start, do the following:
1 Press the ANTI-ICE/ENG and ANTI-ICE/WING pushbutton switches to turn off both anti-ice systems.
2 Make sure that the ON legends of the ANTI-ICE/ENG and ANTI-ICE/WING pushbutton switches go off.
3 Turn the cross bleed valve rotary selector to the AUTO position.
4 Press the PACK 1 (2) pushbutton switch to operate the air conditioning pack.
5 Make sure that the OFF legend of the pushbutton switch goes off.
6 Check for evidence of cleaning agent or anti-freeze mixture odor/smoke in the cabin.
- If evidence is found, continue to operate the engine at idle until no odor/smoke remains in the cabin.
- After 10 minutes of engine running, if continuous odor/smoke remains in the cabin, shut the engine down (Ref. AMM TASK 71-00-00-710-028) and decontaminate the Environmental Control System (ECS) (Ref. AMM TASK 21-00-00-615-803).
- If no evidence is found, shut the engine down (Ref. AMM TASK 71-00-00-710-028).
Subtask 72-00-00-869-084-A ** ON A/C NOT FOR ALL
A. Make sure that the work area is clean and clear of tools and other items.
Subtask 72-00-00-942-059-A ** ON A/C NOT FOR ALL B. Remove the WARNING NOTICE(S).
Subtask 72-00-00-862-053-A ** ON A/C NOT FOR ALL