Water Wash Procedure (Menu Mode) [CFML]

TASK 72-00-00-740-801-A
Water Wash Procedure (Menu Mode)

WARNING: MAKE SURE THAT ALL ENGINE OPERATING AREAS ARE AS CLEAN AS POSSIBLE. ALL RAMPS, TAXIWAYS, RUNWAYS AND OTHER OPERATING AREAS MUST BE VERY CLEAN TO PREVENT BAD DAMAGE TO THE ENGINE, AIRCRAFT AND PERSONS IN THE AREA.

WARNING: DO NOT TRY TO STOP THE FAN FROM TURNING BY HAND. THIS CAN CAUSE INJURY TO THE PERSONS AND DAMAGE TO THE EQUIPMENT.

WARNING: MAKE SURE THAT THE LANDING GEAR GROUND SAFETIES AND THE WHEEL CHOCKS ARE IN POSITION. MOVEMENT OF THE AIRCRAFT CAN BE DANGEROUS.

WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

CAUTION: MAKE SURE THAT THERE IS NO HYDRAULIC GROUND POWER SUPPLY CONNECTED TO THE AIRCRAFT WHEN YOU DO THIS PROCEDURE. IF A HYDRAULIC GROUND POWER SUPPLY IS CONNECTED, THERE IS A RISK OF DAMAGE TO THE ENGINE PUMPS.

CAUTION: DO NOT EXCEED THE STARTER DUTY CYCLE. DAMAGE TO THE STARTER CAN OCCUR.

ZONE: 210
ZONE: 400

1. Reason for the Job
The water wash procedure with menu mode function dry-motors the engine, opens the Variable Stator Vanes (VSV) and closes the Variable Bleed Valves (VBV) to allow water wash mixture to more effectively enter the compressor and clean compressor hardware.
This task is done when cleaning the engine gas path with pure water (non-detergent) or with cleaning solution.
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
400	POWER PLANT, NACELLES AND PYLONS

C. Referenced Information

REFERENCE	DESIGNATION
TASK 12-13-79-610-805-A	Check of the Oil Level and Replenishing
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 31-32-00-860-012-A	Procedure to Get Access to the SYSTEM REPORT/TEST/ENG Page
TASK 36-12-00-860-805-A	Pressurization of the Bleed System with the APU
TASK 36-12-00-860-806-A	Pressurization of the Bleed System through the HP Ground Connector
TASK 72-00-00-100-803-A	Gas Path Cleaning with a Cleaning Solution
TASK 72-00-00-100-804-A	Gas Path Cleaning with Water (Non Detergent)
Water Wash Screen Menu

3. Job Set-up
Subtask 72-00-00-861-061-A

A. Energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-861-002).

Subtask 72-00-00-865-060-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	ENGINE/1 AND 2/IGN/SYS A	1JH	A03
FOR FIN: 4020KM1 (POWER PLANTDEMOUNTABLE, ENGINE 1)
49VU	FUEL/LP VALVE/MOT1/ENG1	1QG	A08
49VU	ENGINE/1/FADEC A/AND EIU 1	2KS1	A04
121VU	FUEL/LP VALVE/MOT2/ENG1	3QG	M25
121VU	ENGINE/IGN/ENG1/SYS B	3JH1	P41
121VU	ENGINE/ENG1/FADEC B/AND EIU 1	4KS1	R40
FOR FIN: 4020KM2 (POWER PLANTDEMOUNTABLE, ENGINE 2)
49VU	FUEL/LP VALVE/MOT1/ENG2	2QG	A09
49VU	ENGINE/2/FADEC A/AND EIU 2	2KS2	A05
121VU	FUEL/LP VALVE/MOT2/ENG2	4QG	M26
121VU	ENGINE/IGN/ENG2/SYS B	3JH2	P42
121VU	ENGINE/ENG2/FADEC B/AND EIU2	4KS2	R41

Subtask 72-00-00-865-063-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
FOR FIN: 4020KM1 (POWER PLANTDEMOUNTABLE, ENGINE 1)
49VU	ENGINE/1/HP FUEL SOV	1KC1	A01
FOR FIN: 4020KM2 (POWER PLANTDEMOUNTABLE, ENGINE 2)
49VU	ENGINE/2/HP FUEL SOV	1KC2	A02

Subtask 72-00-00-860-124-A

D. Aircraft Maintenance Configuration

CAUTION: MAKE SURE THAT THE HYDRAULIC RESERVOIR PRESSURE IS IN THE CORRECT OPERATION RANGE BEFORE YOU START THE ENGINE MOTORING. THE HYDRAULIC FLUID IS NECESSARY TO LUBRICATE THE HYDRAULIC PUMPS THAT THE ENGINE OPERATES.

(1) On the ENG section of maintenance panel 50VU:
(a) Push the FADEC GND PWR 1(2) pushbutton switch.
(b) The ON legend of this pushbutton switch comes on.
(2) Supply the aircraft pneumatic system from the HP ground power unit or the APU (Ref. AMM TASK 36-12-00-860-805) or (Ref. AMM TASK 36-12-00-860-806).
(3) On the lower ECAM Display Unit (DU):
(a) Get the HYDRAULIC page.
(b) Make sure that the pressure of the Green reservoir for engine 1 (the Yellow reservoir for engine 2) is correct.
(c) Make sure that the reservoir fluid level is correct.
(4) On HYD/FUEL panel 40VU, make sure that the ENG 1(2) pump is serviceable:

CAUTION: MAKE SURE THAT THE ENG/MASTER 1(2) CONTROL SWITCH (ON THE PANEL 115VU) IS SET TO OFF BEFORE YOU START THE FUEL PUMPS.

(a) Make sure that the OFF legend of the ENG 1(2) pump pushbutton switch must be off.
(5) On ECAM FUEL SD page, make sure that LP valve is open.
(6) Make sure that the oil quantity in the engine 1(2) oil tank is correct. If necessary, fill the oil tank (Ref. AMM TASK 12-13-79-610-805).
(7) On the lower ECAM DU, make sure that the available air pressure is between 25 psi (1.72 bar) and 55 psi (3.79 bar).

4. Procedure
Subtask 72-00-00-740-050-A

A. Water Wash Procedure with the Menu Mode Function

Water Wash Screen Menu

(1) Do the water wash procedure with the menu mode function.

NOTE: The Engine Electronic Controller (EEC) will not enter the menu mode (the interactive mode) after an inquired command from the Centralized Fault Display System (CFDS) when any of the following conditions is set:

N2 more than ten percent or invalid
Engine in operation
Engine not in the default start state
Throttle Lever Angle (TLA) not at idle or invalid
Aircraft in the air
MASTER lever ON or invalid.

ACTION	RESULT
1.Get Access to the SYSTEM REPORT/TEST/ENG Page (Ref. AMM TASK 31-32-00-860-012).
2.From the menu mode main menu on the left or right Multipurpose Control and Display Unit (MCDU), select the key adjacent to SPECIAL FUNCTIONS (2R).	The SPECIAL FUNCTIONS menu is displayed (Screen 1).
3.Select the key adjacent to WATER WASH PROCEDURE (2L).	The WATER WASH PROCEDURE screen is displayed (Screen 2).
4.Put the cockpit controls in position to start the dry-motoring procedure as follows: A.On the center pedestal, on ENG panel 115VU: Set the ENG/MODE selector switch to the CRANK position. B.On OVERHEAD CTL & IND panel 22VU: Push the ENG/MAN/START/1(2) pushbutton switch (The ON legend of this pushbutton switch comes on).	The engine performs the bowed rotor motoring sequence and begins the dry-motoring. Obey the starter limits and the duty cycle. Do not engage the starter when the core speed is above 60 percent. The starter is capable of three motoring cycles, one after the other, each five-minutes in length, with a five-minute rest period between each motoring cycle, followed by a fifteen-minute cool-down period before you attempt a new start or motoring cycle.
5.Make sure that N2 is more than 20 percent and the oil pressure indication is positive. NOTE: In cold weather conditions, large oil pressure surges can occur.
6.Select the key adjacent to START THE WASH (5R).	Once N2 exceeds the bowed rotor motoring speed and the bowed rotor indication has cleared, the WATER WASH PROCEDURE screen is displayed (Screen 3). The VSVs are slewed open and the VBVs are slewed closed to prepare the engine for the water wash. NOTE: The EEC will abort the water wash menu mode function if one or more of the following conditions occur: N2 is less than 20 percent for two minutes during the motoring The TLA is not at idle or the signals are invalid.
7.Perform the compressor wash (Ref. AMM TASK 72-00-00-100-804) or (Ref. AMM TASK 72-00-00-100-803). A.Wait for ten seconds of positive fan rotation: Start the water/cleaning fluid injection and continue for two minutes Stop the water/cleaning fluid injection.
8.Wait for ten seconds and then stop the engine crank with: The manual start button set to OFF The start switch set to NORM.	After approximately five seconds, the MCDU returns to Screen 1.
9.Let the water/cleaning fluid soak for 10 to 15 minutes.
10.Do steps 4. thru 9. again to perform additional washes as required per the wash procedure.
11.Complete the engine motoring by setting these cockpit controls as follows: The manual start button to OFF The start switch to NORM.	The engine core speed and the oil pressure decrease. Once the core speed falls below 20 percent, the WATER WASH screen (Screen 4) is displayed.
12.On the WATER WASH COMPLETE screen (Screen 4), select the key adjacent to RETURN (6L) to return to the SPECIAL FUNCTIONS menu.	The SPECIAL FUNCTIONS menu is displayed (Screen 1).

5. Close-up
Subtask 72-00-00-865-064-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
FOR FIN: 4020KM1 (POWER PLANTDEMOUNTABLE, ENGINE 1)
49VU	ENGINE/1/HP FUEL SOV	1KC1	A01
FOR FIN: 4020KM2 (POWER PLANTDEMOUNTABLE, ENGINE 2)
49VU	ENGINE/2/HP FUEL SOV	1KC2	A02

Subtask 72-00-00-860-125-A

B. Put the aircraft back to its initial configuration.
(1) On the ENG section of the maintenance panel 50VU:
(a) Release the FADEC GND PWR 1(2) pushbutton switch.
(b) The ON legend goes off.
(c) Set the ADIRU to the OFF position.

Subtask 72-00-00-862-058-A

C. De-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.01 13:03:46 UTC