ABB VTC304-13 - Page 98

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Beheben von Störungen Kap. / Chap. 4 Troubleshooting
10103
ABB Turbo Systems Ltd
- A -
Trouble Location Cause Remedy see
Turbine power
too high, engine
performance and
speed unaltered
Engine
- faults in the injection system
- engine performance higher than
assumed
- injection system incorrectly adjusted
- adjust correctly
- check engine performance
- adjust correctly
Turbo-
charger
- manometer indication incorrect
- nozzle ring dirty or partly obstructed
- replace manometer
- clean
chap. 3
Vibrations
Turbo-
charger
- turbine unbalance due to heavy
contamination of power turbine
- turbine blades or damping wire
damaged
- bearing defect
- remove and clean,
call service station
- replace rotor
- replace bearing, seek possible
cause
chap. 5
chap. 5
chap. 5
Noises on
running down,
time too short,
reluctant starting
Turbo-
charger
- bearing damaged
- rotor rubbing
- dirt in turbocharger
- foreign bodies in the tubocharger
- replace bearing
- call service station
- clean
- call service station, replace
damaged parts
chap. 5
chap. 8
chap. 3
chap. 8
Leaks in the
casing
Turbo-
charger
- cracks due to thermal tension:
insufficient ventilation
insufficient cooling water
dirt in cooling water space
- replace casing
- provide better ventilation
- check and top up
- clean
chap. 3
Loss of
lubrication oil
Turbo-
charger
- piston rings (21004/25003) worn out
or damaged
- compensation ducts X obstructed
- gasket rings (32003/34003) damaged
- replace piston ring
- clean
- replace gasket rings
chap. 5
chap. 3
chap. 5
Constant
surging of the
turbocharger
Turbo-
charger
- increased flow resistance due to:
- dirt in the chargeair cooler
or silencer
- heavy deposits of dirt in the
compressor / turbine
- clean
- clean
chap. 3
chap. 3
Engine
- exhaust gas pressure increased after
the turbine, because the boiler or
the exhaust gas silencer are dirty
- grid dirty
- clean
- clean
Call the service station or representative if the cause of the surging cannot be detected.