ABB A140-H55 - Table 5 Pressure Screw Tightening

Operation Manual / 4 Product description / A130-H.. - A140-H..
2
Removing and Installing
Page 21 /
115
© Copyright 2015 ABB. All rights reserved.
HZTL4030_EN
Revision C
September 2015
Tightening pressure screws
Figure 14: Tightening pressure screws
Torque-controlled tightening
Product
Fixing screw [mm]
Tightening torques [Nm]
A140 M24 35
Table 5: Pressure screw tightening torque
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 tightening torque specified in 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.