ABB HT581373 - 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 2018 ABB. All rights reserved. HZTL4030_EN Revision E September 2018
7.3 Turbocharger is surging
WARNING
Hot air escapes from the filter silencer
A surge blow is accompanied by a loud bang and escape of hot air from the
filter silencer. This may result in injury to personnel.
u Keep a distance from the filter silencer while the turbocharger is surging.
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 maintenance
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 direction
in the compressor is momentarily re-
versed. Such sporadic surge blows do
not impair the safe operation of the
turbocharger.
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Table24: Malfunction – Sporadic surge blows
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