Bleeding The Liquid End; Calibrate The Stroke Control Drive (Optional) - ProMinent Makro TZ Operating Instructions Manual

8.1 Bleeding the liquid end

When bleeding the liquid end or priming
against pressure:
Fig. 15: Tapping the valve set disc

8.2 Calibrate the stroke control drive (optional)

Requirements:
Depressurise the suction and discharge lines!
With dangerous feed chemicals, take suitable protective measures as per
the material safety data sheet!
Read the safety information in this chapter with flammable feed chemicals!
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.
Start up and operation
41