Xylem Flygt 2008 Ready 8 Installation, Operation And Maintenance Manual page 37

Cause
There are signs of wear on the
impeller, pump, and casing.
The liquid level is too low.
If the problem persists, then contact a sales or authorized service representative.
Always state the serial number of the product, see
2008 Ready 8, 8S Installation, Operation, and Maintenance
Remedy
Replace the worn parts.
• Check that the level sensor is set correctly.
• Depending on the installation type, add a means for priming the pump,
such as a foot valve.
Product Description
7 Troubleshooting
on page 8.
35