EcoPower Engine Gas Path Clean for Performance Improvement (Water Only) [IAE]

TASK 72-00-00-100-808-A
EcoPower Engine Gas Path Clean for Performance Improvement (Water Only)

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

CAUTION: DO NOT USE WATER TO WASH ENGINES WITH GAS PATHS THAT HAVE BEEN EXPOSED TO DRY POWDER FIRE EXTINGUISHING AGENTS. THESE AGENTS ARE NOT WATER SOLUBLE. IF YOU CLEAN WITH WATER, THESE MATERIALS WILL BOND TO ENGINE PARTS.

CAUTION: TO PREVENT THE FORMATION OF ICE, MIX V01-007 OR V01-124 ALCOHOL WITH THE WATER YOU USE TO DILUTE THE CLEANER IF THE AMBIENT TEMPERATURE IS BETWEEN 40 DEG.F (4.4 DEG.C) AND 25 DEG.F (-3.9 DEG.C). DO NOT WASH BELOW TEMPERATURES OF 25 DEG.F (-3.9 DEG.C).

CAUTION: THE ENGINE EGT MUST BE BELOW 150 DEG.F (65.6 DEG.C) TO PREVENT ENGINE DAMAGE.

CAUTION: IF POSSIBLE, DO NOT DO THIS PROCEDURE ON MORE THAN ONE ENGINE ON AN AIRCRAFT DURING THE SAME MAINTENANCE VISIT. IF YOU MUST DO MAINTENANCE ON MORE THAN ONE ENGINE AT THE SAME TIME, IT IS RECOMMENDED THAT DIFFERENT TEAMS DO THE SERVICING OF EACH ENGINE. THIS MAINTENANCE ACTION MUST OBEY THE CURRENTLY APPROVED CONTINUOUS AIRWORTHINESS MAINTENANCE PROGRAM OF THE OWNER OPERATOR. THIS IS TO PREVENT DUAL ENGINE DAMAGE OR FAILURE IF THE CLEANING PROCESS IS INCORRECT.

FIN: 1000EM1 ** ON A/C NOT FOR ALL
FIN: 1000EM2 ** ON A/C NOT FOR ALL

1. Reason for the Job
To clean the engine gas path for performance improvement or to remove debris because of birdstrike. It is recommended to use pure water only for the engine gas path cleaning.

NOTE: This task can contribute to fuel savings and take off Exhaust Gas Temperature (EGT) margin recovery.

2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	AIR SOURCE 5 BAR (72.5 PSI)
No specific	1	BOTTLE - SAMPLE
No specific	1	NITROGEN COMPRESSED SOURCE 5 BAR (72.5 PSI) - (DRY)
No specific	AR	PLUG - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)
No specific	AR	WATER - DEMINERALISED
No specific	Torque wrench: range to between 150 and 142 lbf.in (1.70 and 1.60 m.daN )
No specific	Torque wrench: range to between 199 and 182 lbf.in (2.25 and 2.06 m.daN )
No specific	Torque wrench: range to between 310 and 283 lbf.in (3.50 and 3.20 m.daN )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.V01-007)	denatured ethyl alcohol
(Material No.V01-124)	Isopropyl Alcohol, Technical grade
(Material No.V01-201)	distilled or deionized water
(Material No.V02-274)	safety cable

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR, 451AL, 452AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR, 461AL, 462AR

D. Referenced Information

REFERENCE	DESIGNATION
TASK 12-13-79-610-010-A	Drain the Engine Oil System
TASK 12-13-79-610-011-A	Check Oil Level and Replenish
TASK 70-23-11-911-013-A	General Torque Tightening Techniques
TASK 70-40-11-911-016-A	General Instructions for Uses of Safety Cable
TASK 71-00-00-700-013-A	Procedure to Dry Out the High Pressure Turbine (HPT) after Oil Contamination
TASK 71-00-00-710-013-C	Test No.11 : High Power Assurance Test
TASK 71-00-00-710-018-A	Discontinued Start, Restart and Shutdown Procedures
TASK 71-00-00-710-043-A	Normal Engine Automatic-Start Procedure
TASK 71-00-00-710-045-A	Test No.1 : Dry Motor Leak Check
TASK 71-00-00-710-047-A	Normal Engine Manual-Start Procedure
TASK 71-13-00-010-010-A	Opening of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 71-13-00-410-010-A	Closing of the Fan Cowls 437AL(447AL),438AR(448AR)
TASK 73-22-49-220-040-A	Purge the Burner Pressure Sensor Tube
TASK 75-32-41-000-010-A	Removal of the Variable Stator Vane (VSV) Actuator
TASK 75-32-41-400-010-A	Installation of the Variable Stator Vane (VSV) Actuator
TASK 75-32-41-400-010-A-01	Installation of the Variable Stator Vane (VSV) Actuator (SBE 75-0122, Type G4000VSVA Series)
TASK 77-21-43-350-801-A	EGT Harness Dry-Out Procedure
TASK 78-30-00-040-012-A	Deactivation of the Thrust Reverser Hydraulic Control Unit (HCU) for Ground Maintenance
TASK 78-30-00-440-012-A	Re-activation of the Thrust Reverser Hydraulic Control Unit (HCU) after Ground Maintenance
TASK 78-32-00-010-010-A	Opening of the Thrust Reverser Halves
TASK 78-32-00-410-010-A	Closing of the Thrust Reverser Halves
Stage 12 (P3) Air Tube
Electronic Engine Control
Alcohol and Water Mixture Ratio
EcoPower lnlet Manifold

3. Job Set-up
Subtask 72-00-00-941-261-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) On the center pedestal, on ENG panel 115VU:
(a) Put the WARNING NOTICE(S) in position to tell persons not to start the engine.
(2) Make sure that the engine shutdown occurred five minutes or more before you do this procedure.
(3) On 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 the WARNING NOTICE(S) in position to tell persons not to energize FADEC 1(2).
(4) On AIR COND panel 30VU:
(a) Make sure that the OFF legend of the ENG 1(2) BLEED pushbutton switch is on.
(b) Make sure that the OFF legends of the PACK 1 and PACK 2 pushbutton switches are on.

Subtask 72-00-00-010-361-A ** ON A/C NOT FOR ALL

B. Open the fan cowls (Ref. AMM TASK 71-13-00-010-010):
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR.

Subtask 72-00-00-040-172-A ** ON A/C NOT FOR ALL

C. Deactivate the thrust reverser Hydraulic Control Unit (HCU) (Ref. AMM TASK 78-30-00-040-012).

Subtask 72-00-00-010-362-A ** ON A/C NOT FOR ALL

D. Open the thrust reverser halves (Ref. AMM TASK 78-32-00-010-010):
(1) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(2) FOR [1000EM2] (ENGINE-2)
461AL 462AR.

4. Procedure
Subtask 72-00-00-020-113-A ** ON A/C NOT FOR ALL

A. Disconnection of the Sense Line Hoses and if Necessary, the Variable Stator Vane (VSV) Actuator
(1) Disconnect the P4.9 (P5) hose from the adapter and the union on the bottom of the Electronic Engine Control (EEC).

Electronic Engine Control ** ON A/C NOT FOR ALL

(a) Removal of the lockwire

WARNING: USE PROTECTIVE 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.

1 Remove the lockwire that safeties the nut of the hose (2) and the union (1)
(b) Disconnect the nut of the hose (2) from the union.
(2) Disconnect the PS3 (PB) hose from the adapter and the union on the bottom of the EEC. See the figure:

Electronic Engine Control ** ON A/C NOT FOR ALL

(a) Remove the wire that safeties the nut of the hose (3) and the union (4).
(b) Disconnect the nut of the hose (3) from the union (4).

PRE SBE 75-0081

(3) Disconnect stage 12 (P3) air tube at its connection with the off-take tube located at the six o'clock position below the diffuser case (the off-take tube supplies pneumatic pressure to the group of solenoids at three o'clock on the fan case.

Stage 12 (P3) Air Tube ** ON A/C NOT FOR ALL

(4) Put PLUG - BLANKING on the disconnected line ends.

END OF PRE SBE 75-0081

NOTE: The disconnection of the Variable Stator Vane (VSV) actuator and the manual opening of the stator vanes is optional. An additional core wash cycle can be done to compensate the core wash efficiency reduction due to a closed VSV during the core wash. Disconnecting and reconnecting the VSV actuator requires a high-power assurance run.

(5) Optional

WARNING: BE CAREFUL NOT TO PUT FOD (FOREIGN OBJECT DEBRIS) INTO THE ENGINE INLET. FOREIGN OBJECT DEBRIS CAN CAUSE INJURY TO PERSONS AND FAILURE OF THE ENGINE.

CAUTION: WHEN YOU USE TOOLS OR SHARP OBJECTS, BE CAREFUL NOT TO CAUSE DAMAGE TO THE DYNAROHR MATERIAL IN THE INLET. DO NOT COMPLETE ADJUSTMENTS IN THE INLET AND DO NOT PUT OTHER TOOLS THAN THE MANIFOLD IN THE INLET. IF YOU DO, YOU CAN CAUSE DAMAGE TO THE ENGINE.

(a) Disconnect the VSV actuator from the actuator control rod and manually move the stator vanes to fully open (Ref. AMM TASK 75-32-41-000-010).

NOTE: Refer to the applicable equipment operations manual and procedure for the correct equipment steps.

Subtask 72-00-00-410-313-A ** ON A/C NOT FOR ALL

B. Close the thrust reverser halves (Ref. AMM TASK 78-32-00-410-010):
(1) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(2) FOR [1000EM2] (ENGINE-2)
461AL 462AR.

Subtask 72-00-00-410-314-A ** ON A/C NOT FOR ALL

C. When using the EcoPower inlet mounted or rear-mounted J-hook, fan (forward spraying) (RMJF) manifold systems, the thrust reverser doors must be closed to capture effluent during the wash. See the sheet 1 and 2 of the figure:

EcoPower lnlet Manifold ** ON A/C NOT FOR ALL

NOTE: Inspect inlet and fan blades for damage before installing the wash manifold assembly.

Subtask 72-00-00-820-055-A ** ON A/C NOT FOR ALL

D. Calibrate and install the EcoPower manifold system (inlet-mounted or rear-mounted J-hook, fan (forward spraying)(RMJF)) into the engine in preparation for the wash.

Subtask 72-00-00-869-093-A ** ON A/C NOT FOR ALL

E. Check the engine oil level
(1) Check the engine oil level. If necessary, add oil to the engine oil tank (Ref. AMM TASK 12-13-79-610-011).

Subtask 72-00-00-865-061-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	ENGINE/1 AND 2/IGN/SYS A	1JH	A03
FOR FIN: 1000EM1 (ENGINE1)
121VU	ENGINE/IGN/ENG1/SYS B	3JH1	P41
121VU	ENGINE/IGN/ENG1/SYS A BAT	2JH1	P39
FOR FIN: 1000EM2 (ENGINE2)
121VU	ENGINE/IGN/ENG2/SYS B	3JH2	P42
121VU	ENGINE/IGN/ENG2/SYS A BAT	2JH2	P40

Subtask 72-00-00-110-101-A ** ON A/C NOT FOR ALL

G. Cleaning of the Compressor Gas Path

Alcohol and Water Mixture Ratio ** ON A/C NOT FOR ALL

CAUTION: IF THE AMBIENT TEMPERATURE IS BETWEEN 40 DEG.F (4.4 DEG.C) AND 25 DEG.F (-3.9 DEG.C), MIX V01-007 OR V01-124 ALCOHOL WITH THE WATER THAT YOU USE TO DILUTE THE CLEANER. THIS WILL PREVENT ICE FORMATION. ICE CAN CAUSE DAMAGE TO THE ENGINE.

(1) The EcoPower wash unit will be filled with the appropriate amount of water to perform the wash. The water will be heated to between 149 deg.F (65.00 deg.C) and 158 deg.F (70.00 deg.C). Use WATER - DEMINERALISED or WATER - DEMINERALISED mixed with denatured ethyl alcohol (Material No.V01-007) or V01-124Isopropyl Alcohol, Technical grade.

Alcohol and Water Mixture Ratio ** ON A/C NOT FOR ALL

NOTE: If you have the correct water specification, it is permitted to use potable water. It is not necessary to test before each wash. If the water does not have the correct water specification, use distilled or deionized water (Material No.V01-201) .

Table 701 - Potable or Demineralized Water Specification

Constituent	Na*K	Ca*Mg	Total Halides	S04	P04	TDS	pH
PPM Max	50	100	100	100	50	500	6.6 - 8.5

Use WATER - DEMINERALISED or WATER - DEMINERALISED mixed with denatured ethyl alcohol (Material No.V01-007) or V01-124Isopropyl Alcohol, Technical grade.

Alcohol and Water Mixture Ratio ** ON A/C NOT FOR ALL

(2) Operate the starter

WARNING: DURING THE MOTORING OF THE ENGINE:

DO NOT GO IN THE INLET OR EXHAUST HAZARD AREAS
STAY A MINIMUM OF 15 FEET AWAY FROM THE INLET

AFTER THE MOTORING, WAIT UNTIL THE FAN NO LONGER TURNS OR TURNS ONLY BECAUSE OF THE WIND BEFORE YOU GO IN THE INLET HAZARD AREA. IF YOU DO NOT OBEY THESE INSTRUCTIONS, INJURY TO PERSONS CAN OCCUR.

WARNING: WEAR EAR PROTECTION DURING AIRCRAFT ENGINE MOTORING. THE NOISE OF THE ENGINE CAN CAUSE INJURY TO YOUR EARS.

CAUTION: DO NOT MOTOR THE ENGINE MORE THAN THE LIMIT OR YOU CAN CAUSE DAMAGE TO THE STARTER (NOT CONTROLLED BY THE EEC).

(a) Make sure that you do not operate the starter more than its operating limit
1 Three cycles: Two of two-minutes and one of one-minute duration maximum.
2 Do not operate for 15 seconds between cycles to allow for starter rotor lubrication.
3 After three cycles, let the starter cool for 30 minutes before you try a new start or motoring.
4 Do not engage the starter again with the engine motoring above ten percent N2.
(b) First wash cycle:
1 Motor the engine with the starter until a minimum of 14 percent N2 is reached (approximately ten seconds after start air is activated), push the pump ON button to start spraying water (Ref. AMM TASK 71-00-00-710-045).
2 Add water for the remaining time up to two minutes maximum from start air on (water application lime approximately 1 min and 45 seconds).
a Push the pump OFF button to stop the flow.
b Stop motoring and let the engine soak for ten minutes.
(c) Second wash cycle:
1 Do Para. 4.H.(2).(b) again.
(d) Third wash cycle:
1 Motor the engine with the starter until a minimum of 14 percent N2 is reached (Ref. AMM TASK 71-00-00-710-045).
a Once the engine has reached 14 percent N2 (approximately ten seconds) push the pump ON button and spray demineralized water for a total of one minute since the start of motoring.
b Stop motoring after one minute and let the engine drain prior to removing the collection system.
2 EcoPower personnel will remove all wash equipment from the engine, remove manifold from engine, being cautious of the Dynarohr material and remove the collection system. Check inlet for Foreign Object Damage (FOD).

NOTE: If effluent flow from the tail pipe is dirty following the third wash cycle, additional benefit may be gained by additional wash cycles. The operator may elect to repeat the wash procedure at their discretion. ln this case, ensure that the time between successive motoring cycles complies with the starter duty-cycle requirements. EcoPower recommends that you do not exceed six wash cycles.

Subtask 72-00-00-010-364-A ** ON A/C NOT FOR ALL

H. Open the thrust reverser halves (Ref. AMM TASK 78-32-00-010-010):
(1) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(2) FOR [1000EM2] (ENGINE-2)
461AL 462AR.

Subtask 72-00-00-870-050-A ** ON A/C NOT FOR ALL

I. Purge PS3 (PB), P4.9 (PS) pressure sensor lines and reconnect the tubes

CAUTION: DO NOT BLOW COMPRESSED AIR OR NITROGEN THROUGH THE LINES TO THE EEC. IF YOU DO, DAMAGE TO THE PRESSURE SENSORS CAN OCCUR.

CAUTION: DO NOT USE LUBRICANTS ON THE EEC SENSING TUBES, ADAPTERS OR PACKINGS. IF YOU DO, CONTAMINATION OF THESE COMPONENTS CAN OCCUR.

CAUTION: MAKE SURE THAT:

THERE IS NO WATER IN ALL THE DISCONNECTED ENGINE EEC LINES
YOU REMOVE THE PROTECTION COVERS FROM THEIR ENDS
YOU RECONNECT THEM CORRECTLY.

IF THE OPENINGS OF THE LINES ARE BLOCKED OR IF THE LINES ARE INCORRECTLY INSTALLED, DAMAGE TO THE ENGINE CAN OCCUR. THIS CAN HAVE AN UNWANTED EFFECT ON THE OPERATION OF THE AIRCRAFT.

(1) Remove the PLUG - BLANKING from the disconnected line ends.
(2) Purge the burner pressure PS3 (PB) sensor tube (Ref. AMM TASK 73-22-49-220-040).

Electronic Engine Control ** ON A/C NOT FOR ALL

(3) Purge P4.9 (P5) sensor tube.

Electronic Engine Control ** ON A/C NOT FOR ALL

(a) Blow out all contamination from the P4.9 pressure sensor line from the EEC into the engine with NITROGEN COMPRESSED SOURCE 5 BAR (72.5 PSI) - (DRY) or AIR SOURCE 5 BAR (72.5 PSI) for three minutes.

Subtask 72-00-00-420-104-A ** ON A/C NOT FOR ALL

J. Connection of the the stage 12 (P3) air tube

PRE SBE 75-0081

(1) Connect the stage 12 (P3) air tube to the off-take tube on the EEC.
(2) TORQUE the tube connector to between 310 and 283 lbf.in (3.50 and 3.20 m.daN )

(Ref. AMM TASK 70-23-11-911-013).
(3) Safety the tube connector

(a) Safety the tube connector with safety cable (Material No.V02-274) (Ref. AMM TASK 70-40-11-911-016).

END OF PRE SBE 75-0081

Subtask 72-00-00-420-105-A ** ON A/C NOT FOR ALL

K. Connection of the P4.9 tube
(1) Connect the P4.9 tube to P5 connection on the bottom of the EEC.
(2) Connect the nut of the hose (2) to the union (1).
(3) TORQUE the nut of the hose (2) to between 199 and 182 lbf.in (2.25 and 2.06 m.daN )

(Ref. AMM TASK 70-23-11-911-013).
(4) Safety the union of the hose (2).

(a) Safety the nut of the hose (2) with safety cable (Material No.V02-274) (Ref. AMM TASK 70-40-11-911-016).

Subtask 72-00-00-420-106-A ** ON A/C NOT FOR ALL

L. Connect the Pb tube to the Pb connection on the bottom of the EEC
(1) Connect the nut of the hose (3) to the union (4).
(2) TORQUE the nut of the hose (3) to between 150 and 142 lbf.in (1.70 and 1.60 m.daN )

(Ref. AMM TASK 70-23-11-911-013).
(3) Safety the nut of the hose (3)

(a) Safety the nut of the hose (3) with safety cable (Material No.V02-274) (Ref. AMM TASK 70-40-11-911-016).

Subtask 72-00-00-420-107-A ** ON A/C NOT FOR ALL

M. Reconnection of the VSV
(1) If disconnected, reconnect the VSV actuator from the actuator control rod and manually move the stator vanes to fully open (Ref. AMM TASK 75-32-41-400-010).

NOTE: Disconnecting and reconnecting the VSV actuator requires a high-power assurance run.

Subtask 72-00-00-865-062-A ** ON A/C NOT FOR ALL

N. 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
49VU	ENGINE/1 AND 2/IGN/SYS A	1JH	A03
FOR FIN: 1000EM1 (ENGINE1)
121VU	ENGINE/IGN/ENG1/SYS B	3JH1	P41
121VU	ENGINE/IGN/ENG1/SYS A BAT	2JH1	P39
FOR FIN: 1000EM2 (ENGINE2)
121VU	ENGINE/IGN/ENG2/SYS B	3JH2	P42
121VU	ENGINE/IGN/ENG2/SYS A BAT	2JH2	P40

Subtask 72-00-00-350-055-A ** ON A/C NOT FOR ALL

O. Remove the moisture from the Exhaust Gas Temperature (EGT) harness and junction box (Ref. AMM TASK 77-21-43-350-801).

5. Close-up
Subtask 72-00-00-410-315-A ** ON A/C NOT FOR ALL

A. Close the thrust reverser halves (Ref. AMM TASK 78-32-00-410-010):
(1) FOR [1000EM1] (ENGINE-1)
451AL 452AR
(2) FOR [1000EM2] (ENGINE-2)
461AL 462AR.

Subtask 72-00-00-440-162-A ** ON A/C NOT FOR ALL

B. Activate the thrust reverser Hydraulic Control Unit (HCU) (Ref. AMM TASK 78-30-00-440-012).

Subtask 72-00-00-710-075-A ** ON A/C NOT FOR ALL

C. Post Wash Engine Oil Contamination Check
(1) Do a visual check of the engine oil tank sight glass for contamination.
(a) Look at oil through the oil tank sight glass. If the oil is emulsified (has a white color) drain the engine oil system and fill the system with new oil immediately (Ref. AMM TASK 12-13-79-610-010) and (Ref. AMM TASK 12-13-79-610-011).
(b) If the visual check was satisfactory, continue with the steps that follow.

Subtask 72-00-00-410-316-A ** ON A/C NOT FOR ALL

D. Close Access
(1) Close the fan cowls (Ref. AMM TASK 71-13-00-410-010):
(a) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(b) FOR [1000EM2] (ENGINE-2)
447AL 448AR.
(2) Remove the WARNING NOTICE(S).

Subtask 72-00-00-700-052-A ** ON A/C NOT FOR ALL

E. Dry Out the High Pressure Turbine
(1) Do the dry out procedure for the HPT (Ref. AMM TASK 71-00-00-700-013).

NOTE: If the VSV actuator was disconnected and reconnected, a high-power assurance run is required (Ref. AMM TASK 71-00-00-710-013).

Subtask 72-00-00-710-076-A ** ON A/C NOT FOR ALL

F. Post High Pressure (HP) Compressor Wash and Oil Sampling

NOTE: EcoPower recommends running the engine as soon as possible post water wash. However, it is possible for the engine to sit up to 24 hours before the engine idle run. ln freezing conditions ( 40 deg.F (4.44 deg.C) and below), it is recommended the engine dry-out run is completed within 30 minutes after the wash.

(1) If the engine is sent back to revenue service in less than 12 hours, no more action is required.
(2) If a high-power assurance run is done within 12 hours, no further action is necessary (Ref. AMM TASK 71-00-00-710-013).
(3) If criteria at Para. 5.F.(1) or Para. 5.F.(2) above are not fulfilled, do the steps that follow:
(a) If necessary, open the fan cowls (Ref. AMM TASK 71-13-00-010-010):
1 FOR [1000EM1] (ENGINE-1)
437AL, 438AR
2 FOR [1000EM2] (ENGINE-2)
447AL, 448AR
(b) Check engine oil for water contamination

CAUTION: MAKE SURE THERE IS NO CONTAMINATION FROM AN EXTERNAL WATER SOURCE. ONE DROP OF WATER WILL CAUSE THE SAMPLE TO READ OVER THE LIMITS.

1 Use a new clear BOTTLE - SAMPLE to collect approximately 0.0159 USgal (0.06 l) sample of oil for the thin film capacitive polymer oil water content tester test. It is permissible to insert the thin film capacitive polymer oil water content tester directly into the main oil tank fill.
2 Reinstall the main oil tank tiller cap and ensure it is properly locked in position.
3 For the thin film capacitive polymer oil water content tester, perform the following:
a Set thin film capacitive polymer oil water content tester to MIL-L-23699 oil.
4 Stir the probe in the oil until the unit has reached the steady state level of water concentration for 20 seconds. This normally takes at least two minutes of stirring to complete.
(c) Engine water on content limit(s):
1 If the water content is below 1000 parts per million by weight or by volume, the engine can sit no more than a maximum of 24 hours before the next engine run-up.
2 If the water content is above 1000 parts per million by weight or by volume, remove the water content from the oil. Do the steps that follow:
(4) Perform the following idle dry-out run

WARNING: COMPLETE AMM TASK 71-00-00-710-043 OR TASK 71-00-00-710-047 TO OPERATE THE POWER PLANT. IF YOU DO NOT USE ONE OF THESE PROCEDURES, INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT CAN OCCUR.

CAUTION: YOU MUST START THE ENGINE AND OPERATE IT AT IDLE DURING 10 MINUTES BEFORE YOU OPERATE THE ENGINE BLEEDS. IF YOU DO NOT OBEY THIS INSTRUCTION, THE AIR-CONDITIONING SYSTEM CAN BECOME CONTAMINATED.

(a) Use the power plant operation (normal) procedure to start the engine (Ref. AMM TASK 71-00-00-710-043) or (Ref. AMM TASK 71-00-00-710-047).

CAUTION: DO NOT OPERATE THE ENGINE ABOVE IDLE DURING THIS PROCEDURE. IF YOU DO, THE OIL THAT IS IN THE HIGH PRESSURE TURBINE CAN IGNITE. THIS CAN CAUSE ENGINE COMPONENT DAMAGE.

(b) Operate the engine at minimum idle for a minimum of ten minutes.

NOTE: The engine bleeds need to be cycled during the engine run to ensure no odors or fumes in the cabin prior to returning aircraft back to revenue service. Odor or fumes in the cabin is not expected if only WATER - DEMINERALISED was used for the wash.

(c) Operate the cabin bleeds and anti-ice system (IAW applicable AMM task) to purge any water trapped in the system.
(d) Toggle the anti icing control valve ON/OFF by pressing the anti ice selector switch ENG 1 (or ENG 2) from the flight deck.

NOTE: The selector switch will have the ON indicator illuminating in blue color.

(e) Keep the valve open (ON) while engine running in idle. Shut-off valve (OFF) before the engine shutdown.
(f) Use the power plant operation (normal) procedure to do the engine shutdown (Ref. AMM TASK 71-00-00-710-018).
(5) Check engine oil for water contamination:

CAUTION: MAKE SURE THERE IS NO CONTAMINATION FROM AN EXTERNAL WATER SOURCE. ONE DROP OF WATER WILL CAUSE THE SAMPLE TO READ OVER THE LIMITS.

(a) Use a new clear BOTTLE - SAMPLE to collect approximately 0.0159 USgal (0.06 l) sample of oil for the thin film capacitive polymer oil water content tester test. It is permissible to insert the thin film capacitive polymer oil water content tester directly into the main oil tank fill.
(b) Reinstall the main oil tank filler cap and ensure it is properly locked in position.
(6) For the film capacitive polymer oil water content tester, perform the following:
(a) Set film capacitive polymer oil water content tester to MIL-L-23699 oil.
(b) Stir the probe in the oil until the unit has reached the steady state level of water concentration for 20 seconds. This normally takes at least two minutes of stirring to complete.
(c) Engine water oil content limit(s):
1 If the water content is below 1000 parts per million by weight or by volume, the engine can sit up to a maximum of 24 hours before the next engine run.
2 If the water content is above 1000 parts per million by weight or by volume, remove the water content by repeating the idle dry-out run again.
3 If the water content of 1000 parts per million by weight or by volume or less cannot be obtained by additional idle runs, dratn the engine oil system and fill the system with new oil (Ref. AMM TASK 12-13-79-610-010) and (Ref. AMM TASK 12-13-79-610-011).

[Rev.10 from 2021] 2026.04.01 02:44:31 UTC