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Operation Manual / A130-H.. - A140-H..
8 Eliminating malfunctions / 8.3 Turbocharger is surging
8.3
Turbocharger is surging
WARNING
Hot air escapes from the air inlet
A surge blow is accompanied by a loud bang and escape of hot air from the
air inlet. This may result in injury to personnel.
While the turbocharger is pumping, keep a distance from the air inlet.
u
Turbocharger surges continuously or periodically
CAUTION
Continuous or periodic surging
If the turbocharger surges continuously or periodically, parts of the tur-
bocharger may be damaged.
Gradually reduce the engine load.
u
Have the cause clarified and remedied immediately by an ABB Turbochar-
u
ging Service Station.
Have parts assessed for damage and, if necessary, replaced by an ABB
u
Turbocharging Service Station.
Possible causes
Turbocharger
Filter silencer or diffuser contamin-
ated
Heavy contamination deposits in the
turbine or in the nozzle ring
Engine
Protective grating in front of the tur-
bocharger contaminated or damaged
Charge air
Cooler contaminated
cooler
Charge air duct blocked
Table 25: Malfunction – Turbocharger pumping
Sporadic surge blows
Possible causes
Engine
Engine load reduced quickly when
manoeuvring.
When this happens, the flow direc-
tion in the compressor is momentar-
ily reversed. Such sporadic surge
blows do not impair the safe opera-
tion of the turbocharger.
Table 26: Malfunction – Sporadic surge blows
© Copyright 2021 ABB. All rights reserved.
Remedy
Clean (see chapter
→60)
ance work
Clean/replace
Clean
Remedy
- -
HZTL4030_EN
Periodic mainten-
Rev.G
July 2021
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