Troubleshoot Nordson® Pump


Is your Nordson® ProBlue pump cycling fast, not holding pressure and not producing glue at the applicators?

1.  Verify the proper air pressure is being sent to the pump.

  • If not, adjust pressure to recommendations made in melter operating manual.

2.  Check for adhesive leaks in manifold and at pump bottom ball.

  • If leaks, repair leaks and/or clean contaminants from check ball in pump.

3.  Verify glue tank is full.

  • If not full, turn off pump, fill tank with adhesive and give tank time to melt adhesive before turning pump on.

4.  Verify isolation valve is open.

  • If closed, open isolation valve.

5.  Verify the hot melt is not returning to the tank through the return port located behind the tank screen.

Still having issues, call us for free technical assistance.
Submit Feedback