ABB ACS580-01 +C135 Series Original Instructions Manual page 24

24 Mechanical installation – Frames R1 to R3
8. Attach the top (f) and bottom (g) brackets to the side brackets, first the inner
sides (1) (the sides that touch the drive), then the outer sides (2). Remove the
tightening bracket (e) from the top to enable replacement of the cooling fan.
8 × M6 nut
6 N·m (4.4 lbf·ft)