ABB HT557844 - Page 51

Operation Manual / 4 Product description / A150-M.. - A155-M..
2
Removing and Installing
Page 19 /
120
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HZTL4032_EN
Revision F
January 2017
Tightening pressure screws
Figure 13: Tightening pressure screws
Torque-controlled tightening
Product
Fixing screw [mm]
Tightening torques [Nm]
A150 M30 45
A155
M36
85
Table 4: Pressure screw tightening torques
1. Screw in pressure screws crosswise by hand until reaching the stop.
2. Tighten pressure screws crosswise to 50 % of the tightening torque specified in the table.
3. Tighten pressure screws crosswise to 100 % of the tightening torque specified in the table.
4. Work in a circle to tighten all pressure screws to 100 % of the tightening torque specified in
the table.
5. Tighten pressure screws to 100 % in 5 … 7 rounds until the required residual tightening
angle of < 20° is achieved.