Bürkert 2702, Руководство по эксплуатации, Страница: 27 / 94

2702 - 27
M
aintenance and
S
ervicing of the valve
english
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Knock out the dowel pin with a suitable driver.
Driver diameter:
up to DN 32
∅
4 mm
from DN 40
∅
5 mm
→
Pull off the plug with aid of two metal strips of equal height that are clam-
ped to the left and right of the spindle between the plug and the threaded
nipple of the actuator. To pull off the plug, apply compressed air (approx. 6
bar) to the lower pilot air port of the actuator.
→
Push the new plug over the end of the spindle.
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Align the bores.
Dowel pin
Plug
→
Support the plug at its cylindrical part with the aid of a V-block or the like.
→
Carefully knock the dowel pin into the bore with a hammer.
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Bring the dowel pin into a central position relative to the spindle axis (knock in as far as the end of the
recess).
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Before reinstalling the actuator, grease the nipple thread with stainless steel lubricant, e.g.Klüberpaste
UH1 96-402 from company Klüber and replace the graphite seal.*
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After tightening the threaded nipple, orient the control connection by turning the actuator.*
mounting.the.actuator
attention!
Do not damage the sealing surface or the control contour!
attention!
* The valve must be for this in the opened position.
Replacement.of.the.plug