Surging Of The Turbocharger - ABB A140-H56 Operation Manual

Operation Manual / A130-H.. - A140-H..
9 Troubleshooting
9.3

Surging of the turbocharger

Surging of the turbocharger
Possible causes
Engine Protective grating in front of the tur-
bocharger contaminated or damaged
Turbocharger Filter silencer or diffuser contaminated
Heavy dirt deposits in the turbine or in
the nozzle ring
Charge air coo- Cooler contaminated
ler
Charge air duct blocked
Table 24
Continuous or periodic surging
Possible damage to components such as compressor wheel, turbine blades,
bearing and filter silencer.
CAUTION
Have the cause clarified and remedied immediately by an ABB Tur-

bocharging Service Station.
Have parts assessed for damage and, if necessary, replaced by an ABB

Turbocharging Service Station.
Sporadic surge blows
Surging of the turbocharger can occur during certain operating states, such as when reducing
the engine load quickly when manoeuvring. When this happens, the flow direction in the com-
pressor is momentarily reversed. Such sporadic surge blows do not impair the safe operation
of the turbocharger.
 A surge blow is accompanied by a loud bang and escape of hot air from the filter silencer.
© Copyright 2013 ABB. All rights reserved.
Remedy
Clean/replace
Clean (Periodic maintenance [➙ 61])
Clean
HZTL2414_EN
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Revision B
March 2013