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Old 26th Oct 2017, 10:29
  #9 (permalink)  
Join Date: Oct 2006
Location: EDDF
Posts: 128
Fuel Nozzle clean and Water Wash

There are two different things, one is the fuel nozzle cleaning from carbon deposits. Therefore one uses a detergent, a milky stuff, which is pumped into the fuel injection system. You let it soak and pump again. This is repeated several times.
The other thing is to clean the compressor/turbine blades. Therefore you can spray simply with a fire hose into the compressor inlet, while dry motoring (no ignition & no fuel) the engine. The Lufthansa tool is of course much better.... Do not forget to drain the moisture trap at the FCU when the job is finished and let the engine run for about five minutes.
At intervals both tasks are completed together in the hangar.
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