Installation Of The Valve - Burkert 2712 Instructions De Service

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OMMISSIONING

INSTALLATION OF THE VALVE

May be installed in any position, but preferably with the drive unit above.
Observe the flow direction (general rule for control valves: flow input under seat!)
Clean the piping of contamination!
Before connecting the valve housing, take care that piping is aligned!
In the case of weld-on housings, be sure to remove the drive unit before welding.
Procedure:
1. Remove the electrical and pneumatic supplies from the TopControl.
2. Pull off the pneumatic hose between TopControl and drive unit at control connection of drive unit.
3. In the case of control function A, pressurize the lower control connection of the drive unit with compressed air (5 to 7 bar) so
that the control cone lifts from the valve seat and is not damaged. With control function B, no compressed air must be
applied for this purpose.
4. Remove the drive unit in the open valve position by unscrewing the threaded nipple of the housing.
5. Before reinstalling the drive (in open valve position), grease the nipple thread with stainless steel lubricant, e.g. silicone
grease CKS 1110 from OKS, Munich and replace the graphite seal.
After tightening the housing nipple, align the control connections by turning the drive unit.
NOTE When using in an aggressive environment, you are advised to connect pneumatic hoses to all free
control connections and place their other ends in a neutral atmosphere.
CO 2
Operating Instructions No. 803 800