Turbocharger Is Surging; Table 26 Malfunction - Turbocharger; Table 27 Malfunction - Sporadic Surge Blows - ABB A145-M56 Operation Manual

Operation Manual / 4 Product description / A130-M.. - A145-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 cool- Cooler contaminated
er
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 [➙ 45])
Clean
Remedy
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HZTL4031_EN
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Revision E January 2017