Expected Replacement Intervals - ABB A170-M66 Operation Manual

Operation Manual / 4 Product description / A100-M axial
5 Operation and service
5.3

Expected replacement intervals

Rotating components
The recommended replacement intervals for compressor wheels and turbine wheels are spec-
ified based on the safety concept for rotating parts (SIKO) and dependent on the operating
conditions. These intervals are shown on the rating plate of the turbocharger.
Non-rotating components
Depending on the system-specific operating conditions, a differentiation must be made be-
tween the intervals to be expected for:
 replacing the bearing parts and
 replacing the non-rotating components exposed to hot gas.
A decisive role is played by various influencing parameters which, in extreme cases, can dras-
tically reduce the replacement interval of these parts.
During the prescribed periodic service work, the individual parts are examined for wear and
replaced if necessary.
Influencing parameters for bearing parts
 Inferior lubricating oil quality (lubricating oil filtering, lubricating oil condition)
 Exceptional stresses (vibrations, start/stop frequency)
 Inadmissible unbalance of the rotor
Influencing parameters for exhaust gas-charged, non-rotating components
 Fuel quality (gas, MDO, HFO)
 Load profile (thermal cycling, number of start/stop cycles)
 Temperature level of the exhaust gas
 Frequency of turbine cleaning
 Turbine cleaning process
Influencing parameters for exhaust gas-charged, rotating components
 Fuel quality (gas, MDO, HFO)
 Frequency of turbine cleaning
 Turbine cleaning process
 Load profile
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Revision A July 2016