Table 30: Malfunctions During Operation - Power2 Hp Speed Increases; Table 31: Malfunctions During Operation - Exhaust Gas Temperature Too High - ABB PT004165 Operation Manual

Operation Manual / Power2 850-M / High-pressure stage
8 Troubleshooting / 8.2 Malfunctions during operation
Increase in high-pressure stage speed
Possible causes
High-pressure Heavy contamination of the nozzle
stage ring
Low-pressure stage defective
Pipes Leak in exhaust gas pipe before the
low-pressure stage
Table 30: Malfunctions during operation – Power2 HP speed increases
Exhaust gas temperature too high
Engine performance and engine speed unchanged
Possible causes
Engine Malfunction in the injection system
Low-pressure Insufficient air, for example, because
or filter silencer is blocked by contam-
high-pressure ination
stage
Compressor/turbine contaminated
Exhaust gas back pressure too high
Turbine damaged or eroded
Charge air Cooler contaminated
cooler/inter-
Cooling water volume too low
cooler
Inlet temperature of cooling water
too high
Insufficient ventilation
Table 31: Malfunctions during operation – Exhaust gas temperature too high
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Remedy
Contact a Turbo Systems service sta-
tion
Contact a Turbo Systems service sta-
tion
Repair
Remedy
Repair or contact manufacturer
Clean
Clean or repair boiler or exhaust gas si-
lencer
Contact a Turbo Systems service sta-
tion
Clean
Fill
Check/clean cooling system
Improve ventilation
HZTL4063_EN Rev.F March 2022