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Start up and operation
Fig. 17: Tapping the valve set disc
8.2 Calibrate the stroke control drive (optional)
52
With dangerous or unknown feed chemicals, take suitable protective
measures according to the safety data sheet!
1.
Loosen the discharge line.
2.
Install a piece of translucent hose.
3.
Run the pump slowly until the feed chemical appears in the section
of hose.
4.
Remove the piece of hose.
5.
Assemble the discharge line.
Eliminating suction problems (only for single ball valves
with PTFE ball seat)
For suction problems occurring during start up:
Exclude the possibility that there are foreign bodies
–
in the valve.
Place the valve on a stable surface.
–
Using a hammer (1) and a brass bar (2), gently tap
–
the PTFE ball seat above the valve ball - see figure
below.
–
Then with the valve in a damp condition allow it to
prime.
The stroke control drive is calibrated to the capacity ordered ex-factory.
Please contact ProMinent in the event that you want the stroke control
drive to be calibrated to another capacity.
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