ABB HT608780, Operation Instructions Manual

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Operation Manual / Power2 850-M / 4 Product description
7 Troubleshooting / 7.2 Malfunctions during operation
© Copyright 2020 ABB. All rights reserved. HZTL4061_EN Rev.D March 2020
Possible causes Remedy
Low-pressure
or
high-pressure
stage Axial clearance of the rotor excessive Contact ABB Turbocharging Service
Station
Table 19: Malfunctions during operation – Lubricating oil pressure too low
Drop in low-pressure stage speed
Possible causes Remedy
Engine Defects on the connected cylinders Contact enginebuilder
Low-pressure
stage Heavy contamination of the tur-
bine Clean
Damaged rotor components or
bearing Contact ABB Turbocharging Service
Station
Change of operating state of high-
pressure stage Check the operating point of the high-
pressure stage.
Pipes Defects, such as leaks, in the ex-
haust gas pipes or charge air ducts Repair
Table 20: Malfunctions during operation – Power2 LP speed reductions
Drop in high-pressure stage speed
Possible causes Remedy
Engine Defects on the connected cylinders Contact enginebuilder
High-pressure
stage Heavy contamination of the turbine Clean
Damaged rotor components or bear-
ing Contact ABB Turbocharging Service
Station
Change of operating state of low-
pressure stage Check the operating point of the low-
pressure stage.
Pipes Defects, such as leaks, in the exhaust
gas pipes or charge air ducts Repair
Table 21: Malfunctions during operation – Power2 HP speed reductions
Increase in low-pressure stage speed
Possible causes Remedy
Low-pressure
stage Heavy contamination of the nozzle
ring Contact ABB Turbocharging Service
Station
Table 22: Malfunctions during operation – Power2 LP speed increases
Increase in high-pressure stage speed
Possible causes Remedy
High-pressure
stage Heavy contamination of the nozzle
ring Contact ABB Turbocharging Service
Station
Low-pressure stage defective Contact ABB Turbocharging Service
Station
Pipes Leak in exhaust gas pipe before the
low-pressure stage Repair
Table 23: Malfunctions during operation – Power2 HP speed increases
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