ABB HT601081 Operation Manual page 63

Operation Manual / TPL65-A32 / -A33 / -A36 + TPL69-A32 / -A33
5 Maintenance / 5.5 Cleaning components mechanically
5.5.5 Cleaning the cartridge group on the turbine end
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Dry the compressor wheel and the gap between the compressor and
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the bearing casing with a weak jet of compressed air.
Lightly spray the gap between the compressor and the bearing casing
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with penetrating oil.
Dispose of contaminated water and cleaning agent in accordance
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with the safety data sheet.
Soaking the contamination
Baked layers of contamination from fuel residue or coked oil may occur
at the turbine end. The contamination can be removed by soaking and
brushing. The procedure for soaking the layers of contamination as well
as for cleaning the turbine are described in the following.
To soak the layers of contamination on the turbine, the cartridge group
can be immersed vertically in a container with fluid.
The cartridge group must be rotated to do this.
Two cranes (or chain blocks) must be used for the rotating operation.
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Suspending the chain block directly from the crane and rotating the cart-
ridge group is not permitted because of the risk of damage to the com-
pressor wheel.
Cartridge group with one central suspension point
CAUTION
Damage to compressor wheel
The lifting gear must not touch the compressor wheel at any time dur-
ing rotation.
Choose appropriate lifting gear length.
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HZTL2498_EN Rev.F December 2020