Table 27: Malfunctions During Operation - Charge Air Pressure Too High; Table 28: Malfunctions During Operation - Engine Performance Losses - ABB HT604877 Operation Manual

Operation Manual / A150-M56/66/57/67 - A155-M..
8 Eliminating malfunctions / 8.2 Malfunctions during operation
Charge air pressure too high
Engine performance and engine speed unchanged, suction condition normal
Possible causes
Turbochar- Manometer display not correct
ger
Increased speed due to contamination
of nozzle ring
Engine Malfunction in the injection system
Injection mistimed
Engine performance higher than indic-
ated
Table 27: 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.
Rectify malfunction in accordance with the following table.
u
Possible causes
Turbochar- Compressor components severely con-
ger taminated by the ventilation gases that
have been fed in
Increased blade vibration, compressor
blade damage due to the ventilation
gases that have been fed in
Material of the compressor wheel cor-
roded due to the feeding in of ventila-
tion gases containing corrosive com-
ponents
Material of the compressor wheel cor-
roded due to intake air containing ex-
haust gases or salt
Table 28: Malfunctions during operation – Engine performance losses
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Remedy
Replace manometer
Clean (see chapter
ance work →58) or contact an ABB Tur-
bocharging Service Station
Repair or contact manufacturer
Set correctly
Check engine performance
Remedy
Clean (see chapter
ance work →58)
Optimize oil separation
Correct the feed of ventilation gases ac-
cording to instructions of engineb-
uilder.
Correct the feed of ventilation gases ac-
cording to instructions of engineb-
uilder.
Prevent exhaust gas leakages in the en-
gine space
Clean (see chapter
ance work →58)
HZTL4032_EN
Periodic mainten-
Periodic mainten-
Periodic mainten-
Rev.Q January 2021