ABB BUE, Руководство по ремонту

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26 1ZSE 5492-129 en, Rev. 6
21. Check that the position indicator in the second gear box is in its exact position, see
Fig. 8. If not, loosen the two screws in the multihole coupling on the second gearbox
and find the position of the screws that positions the opening in the brass toothed
wheel closest to the red point in the gear box housing. The deviation from exact align-
ment
must not be more than shown in Fig. 8! Also check and, if necessary, adjust the
multihole coupling on the gear box of the third unit, if any.
22. Apply grease on the couplings. Fit the protection tubes to the gear boxes, turning the
slots downwards. Fit and tighten the hose clamps.
23. Check that all gear boxes are lubricated with grease. If not, apply grease on the gears.
24. Make a final check that all gear boxes are in their exact positions within the tolerance
given in Fig. 8 and that all on-load tap-changer units are in the same service position as
the motor-drive.
25. Mount the gaskets and covers of the gear boxes. On UCL there is a slot in the cover for
a gear. Make sure the cover is turned so the slot is above the gear.
26. Refill the transformer with oil according to the transformer documentation.
27.
Remove the locking device of the motor-drive. Operate the on-load tap-changer a few
number of operations in both directions to make sure that everything works properly.
Put the on-load tap-changer back in the position noted in point 2.
28. If everything was working properly, the on-load tap-changer is now ready for energizing.
3. Repairs and adjustment