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NOTICE:
Do NOT override the motor protection repeatedly if it has tripped. Doing so may result in
equipment damage.
Cause
The impeller rotates in the wrong
direction.
One or more of the valves are set in
the wrong positions.
The impeller is difficult to rotate by
hand.
The pipes are obstructed.
The pipes and joints leak.
There are signs of wear on the
impeller, pump, and casing.
The liquid level is too low.
If the problem persists, contact the local Xylem service shop. Always state the serial
number of your pump when you contact Xylem, see
Flygt 2400 Installation, Operation, and Maintenance Manual
Remedy
• If it is a 3-phase pump, transpose two phase leads.
• If it is a 1-phase pump:
Contact the local Xylem service shop.
• Reset the valves that are set in the wrong position.
• Replace the valves, if necessary.
• Check that all valves are correctly installed according to media flow.
• Check that all valves open correctly.
• Clean the impeller.
• Clean out the sump.
• Check that the impeller is properly trimmed.
Clean out the pipes to ensure a free flow.
Find the leaks and seal them.
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
Troubleshooting
(page 11).
41
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