Malfunctions When Stopping; Table 30: Malfunctions When Stopping - Runout Noises; Table 31: Malfunctions When Stopping - Shortened Runout Time - ABB A170-M Series Operation Manual

Operation Manual / A170-M.. - A175-M..
8 Troubleshooting / 8.4 Malfunctions when stopping
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.
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A surge blow is accompanied by a loud bang and escape of hot air from the filter silencer.
8.4

Malfunctions when stopping

Runout noises
Possible causes
Turbochar- Turbocharger contaminated
ger
Bearing damaged
Rotor rubbing
Foreign object in the turbocharger
Table 30: Malfunctions when stopping – Runout noises
Shortened runout time
Possible causes
Turbochar- Turbocharger contaminated
ger
Bearing damaged
Rotor rubbing
Foreign object in the turbocharger
Table 31: Malfunctions when stopping – Shortened runout time
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Remedy
Clean
Contact an ABB Turbocharging
Service Station
Remedy
Clean
Contact an ABB Turbocharging
Service Station
HZTL4033_EN Rev.G December 2020