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Operation Manual / A150-M56/66/57/67 - A155-M..

7 Periodic maintenance work / 7.2 Cleaning the compressor during op-

eration

72000 Compressor casing

27000 External water pressure vessel

27005 Sealing plug

01 Water pipe to filter silencer or air suction branch

02 Pressurized air inlet pipe

03 Valve activator

Pressurized air from the compressor casing(72000) of the turbocharger passes through the

pipe(02) to the water pressure vessel(27000). As soon as the valve activator(03) is activ-

ated, water is pressed into the pipe (01) and routed to the filter silencer or air suction

branch.

The water does not act as a solvent. The coating is removed by the mechanical action of the

impacting droplets.

7.2.5 Carrying out wet cleaning of the compressor

Fig.28: Carrying out wet cleaning of compressor

Engine load Filling amount of water pressure

vessel [dm

]

Water temperature

[°C]

Water injection

period [s]

50…85% 0.4 5…30 10

Table13: Parameters for wet cleaning of compressor

u Remove sealing plug (27005).

u Fill container with 0.4 dm

of pure water.

u Screw in sealing plug (27005) again.

u Push the valve activator(03) against the spring and hold for 10…15seconds until the en-

tire volume of water is injected.

u Continue to operate the engine for at least five minutes to ensure that all of the water is

flushed out of the system.

Not more than three cleaning cycles should be conducted consecutively. Before repeating

the process, continue to operate the engine for at least five minutes to ensure that all of the

water is flushed out of the system.

Page 61 / 194

ABB A155-M66 User Manual

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