Operation Manual / A150-M56/66/57/67 - A155-M..
8 Eliminating malfunctions / 8.2 Malfunctions during operation
© Copyright 2021 ABB. All rights reserved. HZTL4032_EN Rev.Q January 2021
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 contamina-
tion
Clean (see chapter Periodic mainten-
ance work →58)
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
Station
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25: 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
Turbochar-
ger
Manometer display not correct Replace manometer
Supply pipe to manometer not sealed Repair leak
Filter silencer contaminated, therefore
pressure drop too high
Clean (see chapter Periodic mainten-
ance work →58)
Compressor end and/or turbine end
contaminated
Compressor/turbine damaged Contact ABB Turbocharging Service
Station
Exhaust gas back pressure too high Clean or repair boiler or exhaust gas si-
lencer
Engine Air receiver not sealed Repair
Gas piping between engine and turbine
leaking
Injection mistimed Set correctly
Valve control misadjusted
Pipes Pipes downstream to the compressor
outlet not sealed.
Repair.
Table26: Malfunctions during operation – Charge air pressure too low
Page 80 / 194
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