ABB HT845038 Operation Manual page 86

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Troubleshooting
Malfunctions during operation
Charge air pressure too high
Engine performance and engine speed unchanged, air intake condition
normal
Possible causes
Engine Malfunctioning injection sys-
tem
Poorly adjusted injection
system
Engine performance higher
than expected
Turbocharger Manometer display wrong
Fouling of the compressor due to the feeding in of ventilation gases
Reduced compressor performance/efficiency, hence engine performance
losses
Possible causes
Turbocharger Heavy fouling of the com-
pressor components
Increased vibrations, com-
pressor blade damage
Reduced fatigue strength of the compressor wheel, compressor blade
failure.
Possible causes
Turbocharger Material of compressor
wheel corroded
Operation Manual / TPS48-D/E.. - TPS61-D/E..
6
6.3
Elimination
Repair it or contact the manufac-
turer
Correct it
Check engine performance
Replace the manometer
Remedy
Clean compressor
Optimize oil separation
Correct the feed of ventilation
gases according to instructions
of enginebuilder.
Remedy
Check the fuel and its corrosive
components, and change fuel if
necessary.
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