Operating Instructions for ERU Knife Gate Valve K1 with electric actuator
9
Maintenance
For inspection or repair, the valve – or parts thereof - must not be removed unless the
pipe section in which the valve is installed has been isolated and made pressureless. If
work is carried out in the vicinity of the valves, which leads to soiling (concrete work,
masonry, painting, sandblasting and the like), the valves must be covered effectively.
ERU Knife Gate Valves K1 have to be moved regularly at short intervals (every half
year) over the whole travel (OPEN-CLOSED). Depending on the flow medium and the
local conditions at the site of application, the maintenance interval must be reduced or
may be extended. If the profile seal is found to be untight, retighten the hexagon bolts
of the cover plate evenly. If it is no longer possible to retighten the cover plate, replace
the sealing elements.
Check gate and stem regularly for contaminations, clean them if necessary and treat
them with lubricant (rub in a thin layer).
Recommended lubricant:
KLÜBERSYNTH VR69-252
company Klüber Lubrication, Munich
Spare parts and wearing parts according to: drawing
2E 39861
BA46E033
July 2005
Rev. 4
ERHARD-Armaturen
x
D-89502 Heidenheim
x
Postfach 1280
(07321) 320-0
(07321) 320 491 e-mail:info
@
erhard.de
Internet: http://www.erhard.de
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