FLOWTECH flowboost G.V Operation And Maintenance Manual page 20

Pump runs at maximum speed without stops
Cause
Pressure set point not suitable for
the system (the value is higher than
the pump is able to deliver)
Sensor is not connected or damaged
Only one pump is operating
Cause
Pumps have different setting
There is water demand but pump does not start
Cause
Set point is set to zero
Solution
Set new set point in according to pump performance
Check the hydraulic and electrical connection of sensor
Solution
Check frequency converter setting
Solution
1. Check frequency converter setting
2. Set the set point
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