ABB HT570679 Operation Manual page 43

Operation Manual / 4 Product description / A150-M.. - A155-M..
2 Removing and Installing
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.

Figure 7: Loosening the clamping nut
Working in a circle, break loose all pressure screws of the clamping nut.

Working in a circle, loosen each of the pressure screws by about ¼ of a turn (90°).

Repeat the previous step until all pressure screws are relieved of pressure.

Loosen clamping nut by hand.

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Revision F January 2017