ABB A140-H56 Operation Manual page 76

Operation Manual / A130-H.. - A140-H..
8 Periodic maintenance
Heating up the fluid
To shorten the soaking time, the fluid can be heated up.
NOTICE
Water and dirt in the cartridge group
If water or dirt enters the cartridge group, this can impair the function of the
turbocharger and damage parts inside the cartridge group.
CAUTION
Place the cartridge group on suitable supports (1) made of wood or metal.

Observe value (B) for the supports (1) so that the cartridge group is not

immersed too deeply.
Let the layers of dirt on the turbine soak for four hours.

Removing dirt
Lift up the cartridge group and align it horizontally.

Remove dirt manually using a soft brush or a wire brush.

Water and dirt in the cartridge group
If water or dirt enters the cartridge group, this can impair the function of the
turbocharger and damage parts inside the cartridge group.
CAUTION
Make sure that no water or dirt enters the gap between partition wall and

turbine.
Inadmissible rotor unbalance after cleaning
Unevenly distributed residual dirt deposits lead to a rotor unbalance. This
can result in damage to the bearings and turbocharger.
CAUTION
Completely remove any residual dirt deposits on the turbine.

After brushing off the dirt, fill the container (2) with clean water, not salt water.

Immerse the turbine of the cartridge group in clean water so that any loose dirt comes off.

Lift up the cartridge group and align it horizontally.

Clamp the partition wall to the bearing casing.

Dry the turbine and the gap between the turbine and the partition wall with low-pressure

pressurized air.
Lightly spray the turbine and the gap between the turbine and the partition wall with penet-

rating oil.
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Page 74 / 115
Revision B
March 2013