testo 549 Manual De Instrucciones página 6

Install new valve positioner
1 - Make sure that the piston on the valve positioner is
fully in the "open" position.
2 - Apply 2 drops of the enclosed adhesive to the thread (see arrow).
3 - Screw the valve positioner into the valve block. Use the torque wrench for this, do
not use any automatic screwing devices. Secure the valve positioner to 8 Nm.
WARNING
Tightening torque too high.
• Damage to the PTFE seal.
• Mechanical deformation of the valve piston leading to the PTFE seal falling out.
• Damage to the thread of the threaded spindle and the valve screw.
• Broken valve knob
WARNING
Tightening torque too low.
• The valve positioner drops out as soon as there is a build-up of pressure.
Wear protective goggles and safety gloves.
4 - Check that the valve positioner is completely screwed in, i.e. resting against the
block.
5 - Push the plastic handle back onto the valve positioner.
Make sure that the plastic handle is positioned correctly (blue -> left, red -> right)
6 - Reinsert the locking split pin into the plastic handle.
If you have any questions please contact your local dealer or the Testo Customer Service.
Contact details can be found on the internet at www.testo.com/service-contact.
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