7 Maintenance
Maschinenfabrik Reinhausen GmbH 202068 5788897/03 ENVACUTAP
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VVS
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7. Remove screws with locking elements on the on-load tap-changer head
cover.
Figure58: On-load tap-changer head cover
8. Lift off the on-load tap-changer head cover horizontally.
Figure59: On-load tap-changer head cover
9. Extract insulating fluid via pipe connection S.
10. Open the stop-cock between oil conservator and on-load tap-changer.
ð The insulating fluid flows out of the oil conservator into the oil com-
partment.
11. Extract insulating fluid via pipe connection S.