KM 251 en Start-up/Shutdown
V1.0 35
measuring beaker.
2. Set dosing flow to 15%.
3. Remove cover (1l) from stroke adjustment button (L).
4. Use a screwdriver to loosen the locking screw (21) by approximately 2 rotations.
5. Switch on the pump.
6. Turn the stroke adjustment button slowly towards the zero point, until the dosing (the
liquid level falls) stops in the measuring device.
7. Switch off the pump.
8. Set the scale ring (4l) to zero
8.1 Loosen the screw (3l) in the scale ring (4l) slightly using an Allan wrench M3,
8.2 Turn the scale ring (4l) until both “0” are the same on the scale and scale ring.
8.3 Tighten screw (3l).
9. Depending on the application, tighten the locking screw (21) so that the stroke adjust-
ment button can still be turned/cannot be turned any more.
10. Replace cover (1l).
7.5 Operating the pump
Note
When operating the pump, refer to the section “Operating the pump”, “Operating
the pump electronics “ (only for Etron Profi Electronics), as well as “Maintenance”
and if necessary for troubleshooting, the section “Possible faults”.
7.6 Shutdown
!
Warning
When working on the dosing head, connections or lines:
Risk of injuries! Wear the necessary protective clothing (goggles, gloves)!
Do not allow any chemicals to leak from the pump. Collect and dispose of all che-
micals correctly!
Note
If possible, rinse the dosing head before shutting down the pump, e.g.
by supplying it with water.
7.6.1 Switching Off/Uninstalling
• Switch off the pump and disconnect it from the mains.
• Depressurise the system.
• Take suitable steps to ensure that the returning dosing medium is safely collected.
• Carefully remove all lines.
• Uninstall the pump.
7.6.2 Cleaning
• Rinse all parts that have come into contact with the medium very carefully:
• Lines
• Valves
• Dosing Head
• Diaphragm
• Remove any trace of chemicals from the pump housing.
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