ABB HT604133 - Table 23: Malfunction - Turbocharger Pumping; Table 24: Malfunction - Sporadic Surge Blows; Turbocharger Is Surging

Operation Manual / 4 Product description / A130-H.. - A140-H
7 Eliminating malfunctions / 7.3 Turbocharger is surging
© Copyright 2020 ABB. All rights reserved. HZTL4030_EN Rev.F February 2020
7.3 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.
u While the turbocharger is pumping, keep a distance from the air inlet.
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.
u Gradually reduce the engine load.
u Have the cause clarified and remedied immediately by an ABB Turbochar-
ging Service Station.
u Have parts assessed for damage and, if necessary, replaced by an ABB
Turbocharging Service Station.
Possible causes Remedy
Turbocharger Filter silencer or diffuser contamin-
ated
Clean (see chapter Periodic mainten-
ance work →40)
Heavy contamination deposits in the
turbine or in the nozzle ring
Engine Protective grating in front of the tur-
bocharger contaminated or damaged
Clean/replace
Charge air
cooler
Cooler contaminated Clean
Charge air duct blocked
Table23: Malfunction – Turbocharger pumping
Sporadic surge blows
Possible causes Remedy
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24: Malfunction – Sporadic surge blows
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