ABB HT574400 Operation Manual page 42

Operation Manual / 4 Product description / A100-M axial
2 Removal and installation
2.2.1 Loosening the clamping nut
Incorrect procedure can make loosening impossible
Never relieve individual pressure screws completely. If this procedure is not
complied with, the pressure screws can get compressed, thus making it im-
CAUTION
possible to loosen them.
Comply with the following steps for loosening the pressure screws.

Figure 8: Loosening the clamping nut
1. Working in a circle, break loose all pressure screws of the clamping nut.
2. Working in a circle, loosen each of the pressure screws by about ¼ of a turn (90°).
3. Repeat the previous step until all pressure screws are relieved of pressure.
Unscrew and remove the clamping nut by hand.

Do not clean pressure screws
The pressure screws are equipped with a permanent sliding layer that must
not be removed.
CAUTION
Do neither clean nor lubricate the pressure screws. In case of non-
compliance, it cannot be ensured that the necessary tension force is
reached.
Do not clean pressure screws.

Do not lubricate pressure screws.

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Revision A July 2016