ABB PT003888 - Table 26: Malfunctions During Operation - Power2 HP Speed Increases; Table 27: Malfunctions During Operation - Exhaust Gas Temperature too High

Operation Manual / Power2 340-H / Low-pressure stage
8 Troubleshooting / 8.2 Malfunctions during operation
© Copyright 2022 ABB. All rights reserved. HZTL4053_EN Rev.F March 2022
Increase in high-pressure stage speed
Possible causes Remedy
High-pressure
stage
Heavy contamination of the nozzle
ring
Contact a Turbo Systems service sta-
tion
Low-pressure stage defective Contact a Turbo Systems service sta-
tion
Pipes Leak in exhaust gas pipe before the
low-pressure stage
Repair
Table26: Malfunctions during operation – Power2 HP speed increases
Exhaust gas temperature too high
Engine performance and engine speed unchanged
Possible causes Remedy
Engine Malfunction in the injection system Repair or contact manufacturer
Low-pressure
or
high-pressure
stage
Insufficient air, for example, because
filter silencer is blocked by contam-
ination
Clean
Compressor/turbine contaminated
Exhaust gas back pressure too high Clean or repair boiler or exhaust gas si-
lencer
Turbine damaged or eroded Contact a Turbo Systems service sta-
tion
Charge air
cooler/inter-
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27: Malfunctions during operation – Exhaust gas temperature too high
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