User guide

6.1 Direct calibration

Before calibration, make sure:

• that the pump is installed with foot valve, injection

valve, etc. in the existing system.

• that the pump is running at the counter pressure it

is supposed to operate at (adjust the counter pres-

sure valve, if required).

• that the pump is operating with the correct suction

lift.

To carry out a direct calibration, proceed as follows:

Action Pump display

1. Prime the dosing head and the suction tubing.

2. Stop the pump. The green LED is flashing.

3. Fill a graduated glass with dosing liquid, Q

7800-2: approx. 40 ml 7800-19: approx. 500 ml

7800-8: approx. 150 ml 7800-48: approx. 1000 ml

7800-12: approx. 250 ml

4. Read and note the quantity Q

5. Place the suction tubing in the graduated glass.

6. Go to the calibration menu, see section 4.7.

7. Press the button twice.

8. The pump is performing 100 dosing strokes.

9. The factory-calibration value appears in the display.

10. Remove the suction tubing from the graduated

glass and read Q

11. Set the display value to Q

= Q

– Q

12. Confirm with the button.

13. The pump is now calibrated and returns to the op-

erating display.

Set value

to Q

Operating display