1.
Connect the suction and pressure line to the liquid end.
2.
Connect the return line.
3.
Open the vent valve by turning the star-shaped handle
counter-clockwise.
ð
You can now use the return line to degas the pump.
4.
Switch on the metering pump and allow it to work at max‐
imum stroke length and stroke rate until some feed chemical
becomes visible in the return or pressure line.
ð
The liquid end has been filled completely without bub‐
bles.
5.
Switch off the metering pump.
6.
Close the vent valve.
ð
The metering pump is ready for operation.
n
The return line is connected to the vertical valve on the top of
the liquid end. It is labelled with a red sleeve ex-works.
n
The pressure line is connected to the horizontal valve.
1.
Switch on the metering pump and allow it to work at max‐
imum stroke length and stroke rate until some feed chemical
becomes visible in the return or pressure line.
ð
The liquid end has been filled completely without bub‐
bles.
2.
Switch off the metering pump.
ð
The metering pump is ready for operation.
Stroke length and stroke rate
n
Select as large a stroke length as possible with outgassing
feed chemicals.
n
Select as high a stroke rate as possible for good mixing.
n
Do not set the stroke length to less than 30% for precise
metering with volume-proportional metering.
With liquid ends with degassing (not
SEK):
With self-degassing metering pumps
(SEK type):
Setting the precise metering
Start up
40
