Burkert 2000 Manuel D'utilisation page 17

Type 2000 INOX
11.1.2. Replacing valve set
Pendulum disc
Fig. 7: Valve set
Repairs
Spindle
Wrench flat
Seal holder
Seat seal
Centering
Graphite seal
WARNING!
Risk of injury from damaged devices!
If the wrong tools are used for assembly work, the device may be
damaged.
• To remove the actuator from the valve housing, use an open-end
wrench, never a pipe wrench.
If the tightening torque is too great, the spindle thread may be
damaged.
• Observe tightening torque (40 ± 3 Nm)
Procedure:
→
Counter spindle on the wrench flat using open-end wrench
(WAF 7).
→
Carefully loosen centering using a suitable open-end wrench
(WAF 5.5) to prevent damaging the spindle thread.
→
Unscrew centering.
→
Remove seal holder together with seat seal.
→
Attach new seal holder and new seat seal to the spindle.
→
Apply adhesive (Loctite 640) to spindle thread.
→
Screw on centering and tighten using a suitable open-end
wrench (WAF 5.5).
Observe tightening torque (40 ± 3 Nm)!
english
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