Burkert Type 2712 - Manual (Page 13)

EA 2012, 2702, 2712 - 11
englis
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5) Diameter of driver
6) For tightening torques for threaded nipple (SW 70), see the following page
7)
Type 2702 2712
Actuator mm
all
80 - 125 175, 225
DN mm 10 - 65 65 - 100
Knock out the dowel pin with a suitable driver 5) X X X
Clamp two equally long metal bars to the left and right of
the spindle between control cone and threaded nipple of
actuator
X X X
Apply compressed air to the lower control port of actuator 6 bar 6 bar 6 bar
Pull off control cone with the aid of the metal bars X X X
Push the new control cone over the end of the spindle
Attention! Do not damage the sealing surface or the
control contour!
X X X
Align the bores X X X
Support the control cone at its cylindrical part with the aid
of a V-block or the like
X X X
Position dowel pin X X X
Carefully knock the dowel pin into the bore with a
hammer
X X X
Bring the dowel pin into a central position relative to the
spindle axis
X X X
Knock in the dowel pin up to the of the recess X X X
Tighten threaded nipple
Observe torque! 6)
X X X
Grease the thread with high temperature resistant
lubricant, e. g. Klüberpaste UH1 96-402
Attention! Valve must be open
X 7) X 7) X 7)
Replace graphite seal if necesarry X
Assemble the actuator in the reserve order to that
described for disassembly
X X X
Replacing the control cone
ATTENTION!
For special applications such as for oxygen and
analysis, use only the approved lubricants.
up to DN 25 4 mm
DN 32 - DN 65 5 mm
DN 65 - DN
100
8 mm