Related information
• 3.1 Preparing the pump for startup
• 3.2 Safety instructions and requirements for startup
• 3.9 Opening and reactivating the integral relief valve
3.4 Stopping and starting dosing
Make sure the pump was installed and started up correctly.
1. To stop dosing:
•
For pumps with AR control unit, press the start/stop button.
•
Switch off the power supply.
2. To start dosing:
•
Switch on the power supply.
•
For pumps with AR control unit, press the start/stop button.
Related information
• 3.1 Preparing the pump for startup
• 3.3 Starting up the pump
3.5 Deaerating the pump during operation
Make sure the pump was installed and started up correctly.
WARNING
Chemical hazard
Death or serious personal injury
● Wear protective clothing when working on the dosing head, connections or
lines.
● Before relieving the pressure from the outlet side, make sure escaping dosing
medium cannot cause any harm to persons or equipment.
● Collect and dispose of all chemicals in a way that is not harmful to persons or
the environment.
1. Relieve the counterpressure so that air can escape and dosing medium can flow out.
•
Open the deaeration valve (17), if installed.
•
Open the relief valve, if installed.
2. Switch on the power supply.
3. For pumps with AR control unit: Press the start/stop button and keep pressing it for continu-
ous operation during the deaeration process.
4. Set the stroke-length adjusting knob to 100 %.
5. Let the pump run until the dosing medium is free of air bubbles.
The pump has been deaerated.
6. Reactivate the deaeration valve or relief valve.
•
Close the deaeration valve (17), if installed.
•
Reactivate the relief valve, if installed.
7. Change back to operating settings of the pump.
Related information
• 3.3 Starting up the pump
• 3.4 Stopping and starting dosing
• 9.3.1 Torque values
DMX 221 | |
17