Cavitation noise — Pump damage risk

What does Cavitation noise mean?

An audible noise from the pump indicates cavitation, which occurs when the minimum required inlet pressure is not met. This condition can damage the pump bearings and reduce its performance.

• Insufficient inlet pressure at the pump inlet during operation.
• Pump installed above 300 meters altitude without pressure compensation.
• Cascade operation without adequately increased inlet pressure.

Click steps to track your progress.

1. 1

   Check the system's inlet pressure to ensure it meets the minimum requirements for your specific MAGNA3 pump model and liquid temperature (refer to the table on page 54).

2. 2

   For installations above 300 meters, ensure the required relative inlet pressure is increased by 0.01 bar/0.001 MPa per 100 meters of altitude.

3. 3

   If operating in a cascade system, increase the required relative inlet pressure by 0.1 bar/0.01 MPa compared to the stated values for single-head operation.

4. 4

   If the cavitation noise persists after verifying and adjusting the pressure, consult a qualified installer to inspect the system.