6.1.3
Switching the pump on
Pre-requisites:
•
Strainer basket is installed, where applicable.
•
Lid is fitted securely.
•
The pump is filled with water for suction operation.
1.
Open the valve on the intake side completely.
2.
Only open the valve on the delivery side halfway.
NOTICE
The pump can be damaged if it runs dry!
Purge air from the pump and suction line.
3.
Switch the pump/unit on.
NOTICE
If the pump has a three-phase motor and it turns in the wrong
direction, the pump/unit is louder and has a lower capacity.
4.
For three-phase motors: Ensure that the motor turns in the
direction of the arrow labeled on the fan hood. If the motor
rotates in the wrong direction, notify an electrician.
5.
As soon as full speed is reached, open the valve on the
delivery side completely.
6.
Check the mechanical seal for leaking.
6.1.4
Start-up of the pump above the water level
–
Fill pump body with pump medium.
–
Turn on the pump briefly (at least 10 seconds but maximum
20 seconds).
–
Fill pump body with pump medium again and continue the
priming process.
6.2
Decommissioning
1.
Turn the pump off.
2.
Close the valves on the suction and pressure sides.
3.
Drain the pump and pipes.
4.
If there is a chance of frost, store the pump and pipes
sensitive to frost in a dry place, secure from frost.
06|2021
Commissioning/Decommissioning
EN 23