Operation Manual / 4 Product description / A100-L
7 Troubleshooting / 7.2 Malfunctions during operation
© Copyright 2018 ABB. All rights reserved.
HZTL4034_EN
Revision M
August 2018
Exhaust gas temperature too high
Engine performance and engine speed unchanged
Possible causes
Remedy
Turbocharger
Insufficient air, for example, when fil-
ter silencer is blocked by dirt
Compressor/turbine contaminated
Exhaust gas back pressure too high
Clean or repair boiler or exhaust gas si-
lencer
Turbine damaged or eroded
Contact ABB Turbocharging Service Sta-
tion
Engine
Malfunction in the injection system
Repair or contact manufacturer
Charge air
cooler
Cooler contaminated
Clean
Cooling water volume too low
Fill
Inlet temperature of cooling water too
high
Check/clean cooling system
Insufficient ventilation
Improve ventilation
Table 20: Malfunctions during operation – Exhaust gas temperature too high
Charge air pressure too low
Engine performance and engine speed unchanged, suction condition normal
Possible causes
Remedy
Turbocharger Manometer display not correct
Replace manometer
Supply pipe to manometer not sealed
Repair leak
Filter silencer contaminated, therefore
pressure drop too high
Compressor end and/or turbine end con-
taminated
Compressor/turbine damaged
Contact ABB Turbocharging Service Sta-
tion
Exhaust gas back pressure too high
Clean or repair boiler or exhaust gas si-
lencer
Engine
Air receiver not sealed
Repair
Gas pipe between engine and turbine not
sealed
Injection mistimed
Set correctly
Valve control misadjusted
Pipes
Pipes downstream to the compressor
outlet not sealed.
Repair.
Table 21: Malfunctions during operation – Charge air pressure too low
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