Operation Manual / 4 Product description / A150-M56/66/57/67 -
A155-M..
7 Eliminating malfunctions / 7.2 Malfunctions during operation
© Copyright 2020 ABB. All rights reserved. HZTL4032_EN Rev.P March 2020
Charge air pressure too high
Engine performance and engine speed unchanged, suction condition normal
Possible causes Remedy
Turbochar-
ger
Manometer display not correct Replace manometer
Increased speed due to contamination
of nozzle ring
Clean (see chapter Periodic mainten-
ance work →39) or contact an ABB Tur-
bocharging Service Station
Engine Malfunction in the injection system Repair or contact manufacturer
Injection mistimed Set correctly
Engine performance higher than indic-
ated
Check engine performance
Table25: Malfunctions during operation – Charge air pressure too high
Reduced compressor performance/efficiency and therefore engine performance
losses
CAUTION
Compressor damage
A severely contaminated or corroded compressor wheel can reduce the com-
pressor wheel’s fatigue endurance limit and result in the turbocharger being
damaged.
u Rectify malfunction in accordance with the following table.
Possible causes Remedy
Turbochar-
ger
Compressor components severely con-
taminated by the ventilation gases that
have been fed in
Clean (see chapter Periodic mainten-
ance work →39)
Optimize oil separation
Increased blade vibration, compressor
blade damage due to the ventilation
gases that have been fed in
Correct the feed of ventilation gases ac-
cording to instructions of engineb-
uilder.
Material of the compressor wheel cor-
roded due to the feeding in of ventila-
tion gases containing corrosive com-
ponents
Correct the feed of ventilation gases ac-
cording to instructions of engineb-
uilder.
Material of the compressor wheel cor-
roded due to intake air containing ex-
haust gases or salt
Prevent exhaust gas leakages in the en-
gine space
Clean (see chapter Periodic mainten-
ance work →39)
Table26: Malfunctions during operation – Engine performance losses
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