Operation Manual / Power2 850-M / 4 Product description
7 Troubleshooting / 7.2 Malfunctions during operation
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HZTL4061_EN
Rev.D
March 2020
Charge air pressure too low
Engine performance and engine speed unchanged, suction condition normal
Possible causes
Remedy
Engine
Air receiver not sealed
Repair
Gas piping between engine and tur-
bine not sealed
Injection mistimed
Set correctly
Valve control misadjusted
Low-pressure
or
high-pressure
stage
Manometer display not correct
Replace manometer
Supply pipe to manometer not
sealed
Repair leak
Filter silencer contaminated, there-
fore pressure drop too high
Clean
Compressor/turbine contaminated
Compressor/turbine damaged
Contact ABB Turbocharging Service
Station
Exhaust gas back pressure too high
Clean or repair boiler or exhaust gas si-
lencer
Table 25: Malfunctions during operation – Charge air pressure too low
Charge air pressure too high
Engine performance and engine speed unchanged, suction condition normal
Possible causes
Remedy
Engine
Malfunction in the injection system
Repair or contact manufacturer
Injection mistimed
Set correctly
Engine performance higher than ex-
pected
Check engine performance
Low-pressure
or
high-pressure
stage
Manometer display not correct
Replace manometer
Table 26: Malfunctions during operation – Charge air pressure too high
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