Operation Manual / TPS44-H.. - TPS52-H..
6 Operation and service / 6.3 Expected replacement intervals
© Copyright 2021 ABB. All rights reserved.
HZTL4037_EN
Rev.G
June 2021
6.3
Expected replacement intervals
Fuel
The expected replacement intervals apply to engine operation with pre-mix gas and diesel
oil.
Applications with frequent engine start/stop cycles (Peak shaving)
In addition to the replacement intervals specified on the rating plate for the compressor and
turbine wheel (in operating hours), the number of successful engine start/stop cycles must
also be taken into account.
Rotating components
The recommended replacement intervals of the compressor and turbine wheels are spe-
cified with the aid of the safety concept for rotating parts (SIKO) and dependent on the op-
erating conditions. These intervals are shown on the rating plate of the turbocharger.
When employing the ‘Peak shaving’ mode, ABB Turbocharging generally recommends repla-
cing the compressor and turbine wheel after 20000 successful engine start/stop cycles or
after reaching the number of operating hours specified on the rating plate.
Non-rotating components
Depending on the system-specific operating conditions, a differentiation must be made
between 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 sig-
nificantly reduce the replacement interval of these parts.
When utilising the ‘Peak shaving’ mode with frequent engine start/stop cycles, the tur-
bocharger components on the exhaust gas side are subjected to high thermal loads. This
load can cause thermal fatigue when the operating time and number of engine start cycles
increase, thereby resulting in wear and cracking of the components. ABB Turbocharging
therefore recommends having the components periodically inspected and replaced, if neces-
sary, by an ABB Turbocharging Service Station based on the number of successful engine
start cycles specified in the following table.
The individual components will generally be examined for wear and replaced, if necessary,
during the prescribed periodic service work.
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