Start-Up - Grundfos DME 2 Notice D'installation Et D'entretien

5. Start-up

Step
1
2
3
100%
4
5
6
100%
7
100%
8
If the pump is not operating satisfactorily, see section 9. Fault finding chart.
24
Action
Prior to start-up, the dosing head screws must be re-tightened:
• Cross-tighten the screws to 5.5 Nm (+ 0.5/– 0 Nm).
Connect the hoses/pipes:
• Connect the suction and dosing tubes/pipes to the pump.
• Connect a tube to the vent valve, if required, and lead the hose to
the tank.
Switch on the electricity supply:
• The display is on.
• The green indicator light is flashing (the pump has stopped).
• Select language, if required, see section 4.19.
Select the operating mode (see section 4.8):
• Manual.
• Pulse.
• Analog.
• Timer.
• Batch.
Connect the cables:
• Connect the control/level cables, if any, to the pump, see section
3.6.
Start the pump:
• Start the pump by pressing the on/off button.
• The green indicator light is permanently on.
Priming/venting:
• Press the button on the pump control panel and let the pump
100%
run without a counter pressure. Loosen the vent valve by giving it a
1/8 to 1/4 turn, if required.
When the buttons
100%
priming, the pump can be set to run for a specific number of sec-
onds at maximum capacity.
Calibration:
• When the pump has been primed and is running at the right
counter pressure, calibrate the pump, see section 6.
and are pressed simultaneously during