ABB A175-L35 - Malfunctions When Stopping; Table 24 Malfunctions When Stopping - Noises During Run-Down; Table 25 Malfunctions When Stopping - Run-Down Time Shortened

Operation Manual / 4 Product description / A100-L
7
Troubleshooting
Page 55 /
113
© Copyright 2016 ABB. All rights reserved.
HZTL4034_EN
Revision H
November 2016
Sporadic surge blows
Surging of the turbocharger can occur during certain operating states, such as when reducing
the engine load quickly when manoeuvring. When this happens, the flow direction in the com-
pressor is momentarily reversed. Such sporadic surge blows do not impair the safe operation
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
Noises during run-down
Possible causes
Elimination
Turbocharger Turbocharger contaminated Clean it
Damaged bearing Contact an ABB Turbocharging Service
Station
Rubbing rotor
Foreign object in turbocharger
Table 24: Malfunctions when stopping - noises during run-down
Run-down time shortened
Possible causes
Elimination
Turbocharger Turbocharger contaminated Clean it
Damaged bearing
Contact an ABB Turbocharging Service
Station
Rubbing rotor
Foreign object in turbocharger
Table 25: Malfunctions when stopping - run-down time shortened