ABB A140-H55 - Turbocharger Is Surging; Table 26 Malfunction - Turbocharger; Table 27 Malfunction - Sporadic Surge Blows

Operation Manual / 4 Product description / A130-H.. - A140-H..
7
Eliminating malfunctions
Page 69 /
115
© Copyright 2015 ABB. All rights reserved.
HZTL4030_EN
Revision C
September 2015
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
turbocharger may be damaged.
 Gradually reduce the engine load.
 Have the cause clarified and remedied immediately by an ABB
Turbocharging 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
turbocharger contaminated or damaged
Clean/replace
Turbocharger Filter silencer or diffuser contaminated Clean (see chapter Periodic maintenance
work [➙ 45])
Heavy contamination deposits in the
turbine or in the nozzle ring
Charge air
cooler
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
reversed. Such sporadic surge blows
do not impair the safe operation of the
turbocharger.
- -
Table 27: Malfunction – Sporadic surge blows