Operation Manual / 4 Product description / A130-M.. - A145-M..
7
Eliminating malfunctions
Page 69 / 121
© Copyright 2017 ABB. All rights reserved.
HZTL4031_EN
Revision E
January 2017
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. Personal injury can result.
Keep 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 turbo-
charger may be damaged.
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
Remedy
Engine
Protective grating in front of the turbo-
charger contaminated or damaged
Clean/replace
Turbocharger
Filter silencer or diffuser contaminated Clean (see chapter Periodic maintenance
Heavy contamination deposits in the
turbine or in the nozzle ring
Charge air cool-
er
Cooler contaminated
Clean
Charge air duct blocked
Table 26: 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 tur-
bocharger.
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Table 27: Malfunction – Sporadic surge blows