Turbocharger Is Surging; Table 26 Malfunction - Turbocharger Pumping; Table 27 Malfunction - Sporadic Surge Blows - ABB A155-M57 Operation Manual

Operation Manual / 4 Product description / A150-M.. - A155-M..
7 Eliminating malfunctions
7.3

Turbocharger is surging

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. Personal injury can result.
WARNING
Keep distance from the filter silencer while the turbocharger is surging.

Turbocharger surges continuously or periodically
Continuous or periodic surging
If the turbocharger surges continuously or periodically, parts of the turbo-
charger may be damaged.
CAUTION
Gradually reduce the engine load.

Have the cause clarified and remedied immediately by an ABB Turbo-

charging Service Station.
Have parts assessed for damage and, if necessary, replaced by an ABB

Turbocharging Service Station.
Possible causes
Engine Protective grating in front of the turbo-
charger contaminated or damaged
Turbocharger Filter silencer or diffuser contaminated
Heavy contamination deposits in the
turbine or in the nozzle ring
Charge air Cooler contaminated
cooler
Charge air duct blocked
Table 26: Malfunction – Turbocharger pumping
Sporadic surge blows
Possible causes
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 tur-
bocharger.
Table 27: Malfunction – Sporadic surge blows
© Copyright 2017 ABB. All rights reserved.
Remedy
Clean/replace
Clean (see chapter Periodic maintenance
work [➙ 41])
Clean
Remedy
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Revision F January 2017