6 Mounting
Maschinenfabrik Reinhausen GmbH 2020
69
6385142/08 EN
ETOS
®
ED
13. Uncouple the motor-drive unit and vertical drive shaft by removing the
coupling brackets. After uncoupling, do not turn the drive shaft any fur-
ther.
Figure 50: Uncoupling the motor-drive unit and drive shaft
14. Operate the motor-drive unit using the hand crank in the same direction,
continuing by C tap-change indicator sections on the tap-change indica-
tor (example: 1.5 tap-change indicator sections).
15. Couple the motor-drive unit and on-load tap-changer by refitting the verti-
cal drive shaft (tightening torque 9 Nm). Do not turn the drive shaft or
output shaft of the bevel gear or motor-drive unit any further.
16. Continue to turn in the same direction while counting the tap-change in-
dicator sections required for the pointer to reach the mid-position of the
area marked in gray on the tap-change indicator. Note the number
counted (value A) and the direction of rotation. If value A is greater than
8 tap-change indicator sections, the tap-change operation has been
completed correctly. If value A is less than 8 tap-change indicator sec-