ABB HT596419 Operation Manual page 59

Operation Manual / TPL65VA32 / VA33
5 Maintenance / 5.5 Cleaning components mechanically
5.5.3 Cleaning the cartridge group on the compressor end
5.5.4 Cleaning the cartridge group on the turbine end
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CAUTION
Selection of the cleaning agent
Cleaning agents that contain chlorine corrode metals.
Only use pH-neutral cleaning agents that do not corrode metals.
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Observe the material safety data sheet.
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Observe country-specific regulations regarding banned and restric-
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ted substances.
CAUTION
Water and contamination in the cartridge group
If water or contamination penetrates the cartridge group, this can im-
pair the function of the turbocharger and damage parts inside the cart-
ridge group.
Make sure that no water or contamination can enter into the cart-
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ridge group.
Clean compressor wheel with a scouring cloth or soft brush soaked in
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water with household cleaning agent. Do not use any wire brushes!
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.
HZTL2464_EN Rev.E March 2020