Surging Of The Turbocharger; Malfunctions When Stopping; Table 20: Malfunctions When Stopping - Runout Noises; Table 21: Malfunctions When Stopping - Shortened Runout Time - ABB HT575751 Operation Manual

Operation Manual / 4 Product description / A100-M axial
7 Troubleshooting / 7.3 Surging of the turbocharger
7.3

Surging of the turbocharger

CAUTION
Continuous or periodic surging
If the turbocharger surges continuously or periodically, parts of the tur-
bocharger may be damaged.
Gradually reduce the engine load.
u
Have the cause clarified and remedied immediately by an ABB Turbochar-
u
ging Service Station.
Have parts assessed for damage and, if necessary, replaced by an ABB
u
Turbocharging Service Station.
Sporadic surge blows
Surging of the turbocharger can occur during certain operating states, such as when redu-
cing the engine load quickly when manoeuvring. When this happens, the flow direction in the
compressor is momentarily reversed. Such sporadic surge blows do not impair the safe op-
eration of the turbocharger.
¡
A surge blow is accompanied by a loud bang and escape of hot air from the filter silencer.
7.4

Malfunctions when stopping

Runout noises
Possible causes
Turbocharger Turbocharger contaminated
Bearing damaged
Rotor rubbing
Foreign object in the turbocharger
Table 20: Malfunctions when stopping – Runout noises
Shortened runout time
Possible causes
Turbocharger Turbocharger contaminated
Bearing damaged
Rotor rubbing
Foreign object in the turbocharger
Table 21: Malfunctions when stopping – Shortened runout time
© Copyright 2017 ABB. All rights reserved.
Remedy
Clean
Contact an ABB Turbocharging
Service Station
Remedy
Clean
Contact ABB Turbocharging Service Sta-
tion
HZTL4033_DE Revision B December 2017