MR VACUTAP VMS - Filling the Oil Compartment and Oil Conservator with Fresh Insulating Fluid

7 Maintenance
Maschinenfabrik Reinhausen GmbH 202054 5993419/02 ENVACUTAP
®
VMS
®
7.3.4 Filling the oil compartment and oil conservator with fresh
insulating fluid
NOTICE
Damage to the on-load tap-changer!
Unsuitable insulating fluids cause damage to the on-load tap-changer.
► Only use insulating fluids that meet the requirements in accordance with
IEC60296.
► Ensure that the new insulating fluid has the same chemical, mechanical,
thermal and electrical properties. Otherwise contact Maschinenfabrik
Reinhausen GmbH's Technical Service department.
1. Fill the oil compartment of the on-load tap-changer with fresh insulating
fluid via the pipe connection S up to the level of the carrier plate.
2. Insert the new o-ring untwisted in the on-load tap-changer head cover.
3. Check that the feather key is securely positioned in the adapter shaft.
Where necessary, use Vaseline to secure the feather key against falling
out.
Figure28: Feather key
4. Position the on-load tap-changer head cover on the on-load tap-changer
head in such a way that the red triangular markings on the on-load tap-
changer head and the on-load tap-changer head cover are aligned.
Figure29: Triangular markings and o-ring