Edition 4 - 01-04-2019
info@vag-group.com
www.vag-group.com
Problem
Possible causes
Troouble-shooting
Penstock hard to operate
Stem dirty
Clean stem and relubricate
Stem nut dirty
Clean stem nut and relubricate
Stem nut worn
Replace stem nut
Foreign matter in lateral sealing
groove
Clean sealing groove
Penstock cannot be closed completely
Obstacle in flow passage
Remove blocking objects (branches, stones...) from the
flow passage
Foreign matter in lateral sealing
groove
Clean sealing groove
Wrong adjustment of electric
actuator
Check the torque adjustment of the electric actuator and
readjust it, if required, according to the manufacturer‘s
instructions
Penstock does not seal
Penstock not completely closed
Close penstock completely
Obstacle in flow passage
Remove blocking objects (branches, stones...) from the
flow passage
Seal damaged
Replace seal
Table 5: Trouble-shooting
9 How to contact us
Head office
VAG GmbH
Carl-Reuther-Str. 1
68305 Mannheim
Germany
Telephone: +49 (621) 749-0
Fax: +49 (621) 749-2153
info@vag-group.com
http://www.vag-group.com
Service
Our service hotline can be reached 24/7 world-wide. In case of
emergency, please contact us by phone.
Service hotline: +49 621-749 2222
Service per E-Mail: service@vag-group.com
