10 Fault elimination
Maschinenfabrik Reinhausen GmbH 2020 3496385142/08 EN ETOS
®
ED
10 Fault elimination
This chapter describes how to rectify simple operating faults.
10.1 Safety instructions
WARNING
Danger of death or severe injury!
Danger of death or severe injury from explosive gases in the on-load tap-
changer / de-energized tap-changer, in the pipework system, at the dehy-
drating breather opening and from flying parts and hot oil splashing!
► If a protective device has been tripped or you suspect a fault, first check
the transformer, on-load tap-changer / de-energized tap-changer and mo-
tor-drive unit. Never operate the motor-drive unit electrically or with the
hand crank beforehand as long as the transformer is energized.
► Do not resume operation until the troubleshooting has been completed.
► Make sure that only trained technicians perform the work.
► Use suitable personal protective equipment/clothing.
► Ensure that there are no naked flames, hot surfaces or sparks (for exam-
ple caused by static charging) in the immediate surroundings and that
none occur.
► Ensure that all safety equipment for the on-load tap-changer / de-ener-
gized tap-changer is ready for use.
► Ensure that the oil compartment of the on-load tap-changer is correctly
filled with oil as per the instructions.
10.2 General information
Document each fault, even if it is easy to rectify.
In the event of faults on the on-load tap-changer / de-energized tap-changer
or motor-drive unit, which cannot be easily and immediately corrected on
site, or if a protective device has been tripped, please inform your authorized
MR representative, the transformer manufacturer or contact us directly at:
Maschinenfabrik Reinhausen GmbH
Technical Service
Postfach 12 03 60
93025 Regensburg
Germany
Phone: +49 94140 90-0
Fax: +49 9 41 40 90-7001
E-mail: service@reinhausen.com
Internet: www.reinhausen.com
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