DOC AIRBUS | AMM A320FEngine Washing Requirements [CFMB]
TASK 72-00-00-100-008-A
Engine Washing Requirements
Self explanatory
2. Job Set-up Information
A. Consumable Materials
B. Referenced Information
3. Job Set-up
Subtask 72-00-00-869-075-A ** ON A/C NOT FOR ALL
Subtask 72-00-00-110-061-A ** ON A/C NOT FOR ALL
[Rev.10 from 2021]
2026.04.01 12:59:36 UTC
Engine Washing Requirements
CAUTION:
DO NOT USE METHANOL. IF YOU DO, THIS CAN CAUSE DAMAGE TO ENGINE TITANIUM PARTS.
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).
1. Reason for the JobSelf explanatory
2. Job Set-up Information
A. Consumable Materials
| REFERENCE | DESIGNATION |
|---|---|
| (Material No.CP1041) | isopropyl alcohol |
| (Material No.CP5060) | gas path cleaner |
| REFERENCE | DESIGNATION |
|---|---|
| TASK 72-00-00-100-026-A | Washing of the Engine Gas Path with Pure Water |
| TASK 72-00-00-100-028-A | Washing of the Engine Gas Path with Cleaning Agent |
Subtask 72-00-00-869-075-A ** ON A/C NOT FOR ALL
A. Not Applicable
4. ProcedureSubtask 72-00-00-110-061-A ** ON A/C NOT FOR ALL
A. Engine Washing Requirements
(1) General
(a) You can wash the engine either with pure water only (Ref. AMM TASK 72-00-00-100-026), or with a solution of gas path cleaner (Material No.CP5060) (Ref. AMM TASK 72-00-00-100-028).
1 For EGT margin recovery, it is recommended to perform the engine gas path water wash with pure water only (without cleaning agent) (Ref. AMM TASK 72-00-00-100-026). Pure water (without detergent) is effective in most situations depending on the engine operating environment and the gas path cleaning program implemented by the operator.
2 An engine gas path water wash using detergent (Ref. AMM TASK 72-00-00-100-028) provides the most effective method for cleaning the engine compressors. However, the use of detergent requires the strict application of the engine rinsing and bleed system cycling per AMM procedures to thus prevent fumes in the cabin when the aircraft resumes revenue service operation. Consideration should be given to accomplishing gas path cleaning with detergent if any of the following conditions are met:
(2) Water
(a) Water properties
1 Use water consistent with U.S. Environmental Protection Agency Secondary Maximum Contaminant Level in Safe Drinking Water (40 CFR Ch. I Para 143.3 (7 -1 -02 Edition)).
The secondary maximum contaminant levels for public water systems are as follows:
Contaminent levels:
Aluminum: 0.05 to 0.2 mg/l.
Chloride: 250 mg/l.
Color: 15 color units.
Copper: 1.0 mg/l.
Corrosivity: Non-corrosive.
Fluoride: 2.0 mg/l.
Foaming agents: 0.5 mg/l.
Iron: 0.3 mg/l.
Manganese: 0.05 mg/l.
Odor: 3 threshold odor number.
pH: 6.5 - 8.5.
Silver: 0.1 mg/l.
Sulfate: 250 mg/l.
Total dissolved solids (TDS): 500 mg/l.
Zinc: 5 mg/l.
2 Use water with less than 25 parts per million sodium plus potassium (Na+K), and with a pH of 6.8-8.0 (potable water usually meets these requirements).
3 Hot water from 150 deg.F (66 deg.C) to 200 deg.F (93 deg.C) is more effective for cleaning or rinsing.
(b) Water flow
(c) Water temperature
1 For best results, increase the temperature of the water to between 150 deg.F (66 deg.C) and 200 deg.F (93 deg.C).
2 Hot water from 150 deg.F (66 deg.C) to 200 deg.F (93 deg.C) will wash and rinse the gas path with more efficiency than cold water.
(3) Cleaning solution (if required)
(4) Anti-freeze mixtures
(b) Prepare mixtures as follows:
1 For temperatures of 40 deg.F (5 deg.C) to 23 deg.F (-5 deg.C), mix 25 percent of isopropyl alcohol (Material No.CP1041) to 75 percent of water.
2 For temperatures of 23 deg.F (-5 deg.C) to 14 deg.F (-10 deg.C), mix 35 percent of isopropyl alcohol (Material No.CP1041) to 65 percent of water.
(c) Do not use anti-freeze mixtures at temperatures below 14 deg.F (-10 deg.C).
(1) General
(a) You can wash the engine either with pure water only (Ref. AMM TASK 72-00-00-100-026), or with a solution of gas path cleaner (Material No.CP5060) (Ref. AMM TASK 72-00-00-100-028).
1 For EGT margin recovery, it is recommended to perform the engine gas path water wash with pure water only (without cleaning agent) (Ref. AMM TASK 72-00-00-100-026). Pure water (without detergent) is effective in most situations depending on the engine operating environment and the gas path cleaning program implemented by the operator.
2 An engine gas path water wash using detergent (Ref. AMM TASK 72-00-00-100-028) provides the most effective method for cleaning the engine compressors. However, the use of detergent requires the strict application of the engine rinsing and bleed system cycling per AMM procedures to thus prevent fumes in the cabin when the aircraft resumes revenue service operation. Consideration should be given to accomplishing gas path cleaning with detergent if any of the following conditions are met:
- Organic debris or oil deposits are observed on compressor airfoil.
- The engine has less than 10 deg.C (50 deg.F) EGT margin left.
(2) Water
(a) Water properties
1 Use water consistent with U.S. Environmental Protection Agency Secondary Maximum Contaminant Level in Safe Drinking Water (40 CFR Ch. I Para 143.3 (7 -1 -02 Edition)).
The secondary maximum contaminant levels for public water systems are as follows:
Contaminent levels:
Aluminum: 0.05 to 0.2 mg/l.
Chloride: 250 mg/l.
Color: 15 color units.
Copper: 1.0 mg/l.
Corrosivity: Non-corrosive.
Fluoride: 2.0 mg/l.
Foaming agents: 0.5 mg/l.
Iron: 0.3 mg/l.
Manganese: 0.05 mg/l.
Odor: 3 threshold odor number.
pH: 6.5 - 8.5.
Silver: 0.1 mg/l.
Sulfate: 250 mg/l.
Total dissolved solids (TDS): 500 mg/l.
Zinc: 5 mg/l.
2 Use water with less than 25 parts per million sodium plus potassium (Na+K), and with a pH of 6.8-8.0 (potable water usually meets these requirements).
3 Hot water from 150 deg.F (66 deg.C) to 200 deg.F (93 deg.C) is more effective for cleaning or rinsing.
(b) Water flow
CAUTION:
DO NOT APPLY WATER AT MORE THAN 6 US GAL (23 LITERS) PER MINUTE. IF YOU DO, ENGINE DAMAGE CAN OCCUR.
1 Apply a water flow between 5 USgal (19 l) and 6 USgal (23 l) per minute. (c) Water temperature
1 For best results, increase the temperature of the water to between 150 deg.F (66 deg.C) and 200 deg.F (93 deg.C).
2 Hot water from 150 deg.F (66 deg.C) to 200 deg.F (93 deg.C) will wash and rinse the gas path with more efficiency than cold water.
(3) Cleaning solution (if required)
WARNING:
USE RUBBER GLOVES AND EYE PROTECTION WHEN HANDLING LIQUID DETERGENT. LIQUID DETERGENT AND ANTI-FREEZE SOLVENT HAVE LOW FLASHPOINTS.
KEEP AWAY FROM HEAT AND OPEN FLAME. PROVIDE ADEQUATE VENTILATION. STAND AT LEAST 3 FEET (1M) AWAY FROM COWLING INLET WHEN SPRAYING LIQUIDS INTO ENGINE TO AVOID PERSONAL INJURY.
(a) Mix 20 to 25 percent of gas path cleaner (Material No.CP5060) with 75 to 80 percent of water. (4) Anti-freeze mixtures
WARNING:
USE RUBBER GLOVES AND EYE PROTECTION WHEN HANDLING LIQUID DETERGENT. LIQUID DETERGENT AND ANTI-FREEZE SOLVENT HAVE LOW FLASHPOINTS.
KEEP AWAY FROM HEAT AND OPEN FLAME. PROVIDE ADEQUATE VENTILATION. STAND AT LEAST 3 FEET (1M) AWAY FROM COWLING INLET WHEN SPRAYING LIQUIDS INTO ENGINE TO AVOID PERSONAL INJURY.
CAUTION:
USE ONLY ISOPROPYL ALCOHOL AS AN ANTI-FREEZE MIXTURE. METHANOL CAN CAUSE CORROSION OF THE TITANIUM PARTS OF THE ENGINE.
(a) Use anti-freeze mixtures at temperatures below 40 deg.F (5 deg.C). (b) Prepare mixtures as follows:
1 For temperatures of 40 deg.F (5 deg.C) to 23 deg.F (-5 deg.C), mix 25 percent of isopropyl alcohol (Material No.CP1041) to 75 percent of water.
2 For temperatures of 23 deg.F (-5 deg.C) to 14 deg.F (-10 deg.C), mix 35 percent of isopropyl alcohol (Material No.CP1041) to 65 percent of water.
(c) Do not use anti-freeze mixtures at temperatures below 14 deg.F (-10 deg.C).