35
O
pe
ra
tion
Commissioning
Always make commissioning when first mounting the pump in your system or resuming operation after a long
period of stoppage.
Open an air vent and a suction line.
Do not open a calibration line if any.
Supply the rated power voltage to the pump.
Start the pump at a low flow rate and gradually increase it to a target rate.
Continue operation for 10 minutes and check the pump and pipework for any abnormality.
Close an air vent line to introduce liquid to a main line.
Before a long period of stoppage (One month or more)
Clean wet ends and the inside of piping.
• Run the pump with clean water for about 30 minutes to rinse chemicals off.
Before unplugging the pump
•
Always stop the pump by key operation and wait for three seconds before unplugging the pump. Otherwise,
the last key operation may not be put in memory. In this case the pump unintentionally starts to run as pow
-
ered on, discharging liquid.
When the pump does not transfer liquid at resuming operation.
• Clean the valve sets and remove foreign matters.
• If air is in the pump head, expel air through the above commissioning procedure.
2
1
3
4
Before operation
Air vent valve
Open
Open
Close
