Direct Calibration - Grundfos DME 2 Instrucciones De Instalación Y Funcionamiento

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).
Action
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
DME 2: approx. 40 ml
DME 8: approx. 150 ml
DME 12: approx. 250 ml
4. Read and note the quantity Q
5. Place the suction tubing in the graduated glass.
Q
1
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 .
2
11. Set the display value to Q
12. Confirm with the
13. The pump is now calibrated and returns to the op-
erating display.
26
.
1
DME 19: approx. 500 ml
DME 48: approx. 1000 ml
.
1
Q
d
Q
2
= Q – Q .
d 1 2
button.
• that the pump is operating with the correct suction
lift.
To carry out a direct calibration, proceed as follows:
Pump display
Set value
to Q
d
Operating display