ABB UZE Repair Manual page 25

2.
3.
Upper end stop
Stop screw
Pivoting arm
Fig. 10.
Pivoting arm
Stop screw
Lower end stop
Fig. 11.
Upper end stop
Stop screw
Pivoting arm
Fig. 12.
1ZSE 5492-128 en, Rev. 4
Change the upper end stop in the following way:
-
Operate to the new highest position –1.
-
Mark up the first hole above the pivoting arm (Fig. 10).
-
Operate the on-load tap-changer to a position where the marked hole is accessible
and mount another extra stop screw.
Operate the motor-drive mechanism using the hand crank and check that the mechani-
cal end stops work and with motor operation that the electrical limit switches work in
both lower position (Fig. 11) and upper position (Fig. 12).
3 Repairs and adjustments
Lower end stop
Stop screw
Stop screw
Upper end stop
Lower end stop
Stop screw
fm_00109
25