Tensioner Pulley Assembly Replacement


Goals:

 

 

Replace the Tensioner

To replace the tensioner assembly:

  • Manually move the print head to the center of the printer and turn the printer off.
  • Use a 3mm hex wrench to loosen the set screw that applies tension to the belt.



  • Use a 3mm hex wrench to remove the two screws that attach the tensioner to the printer chassis.



  • Pull the old tensioner away from the printer chassis and release the belt from the pulley.
  • Slide the belt around the pulley on the new tensioner.
  • Make sure the belt is securely installed around each pulley and replace the new tensioner on the printer's chassis.



  • Use a 3mm hex wrench to replace the two screws that attach the tensioner to the printer chassis.



  • Follow steps below to Adjust the Belt Tension and Calibrate the Motor Encoders before printing.

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Adjust Belt Tension

To adjust the belt tension on your printer:

  1. Install and open the Pano Tuner app on your mobile device.
  2. Within Pano Tuner settings, set the "Tolerance" field to the "+/- 10 Cents" position.
  3. Turn off the printer; manually move the printhead to a position that allows space for plucking the belt underneath the Y-rail opposite of the printhead.



  4. Place your phone's microphone close to, but not touching the belt opposite of the printhead.  Pluck the belt, as if it were a guitar string. Use a 3mm hex wrench to adjust the belt tensioner until a frequency of 82Hz-84Hz is read by the app.

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Calibrate Motor Encoders

To calibrate your encoders with the utility:

  1. Press the menu button in the upper right corner of your printer's LCD touch screen.



  2. Select the "Utilities" tile from the available options.



  3. Select the "Maintenance" tile from the available options.



  4. Select the "Calibrate Stepper Encoders"tile.



  5. Press "Unload Plastic" on your printer's touch screen.



  6. Push in the black Push-To-Connect fitting to release the plastic plastic filament feed tube.
  7. Pull the plastic tube from the Push-To-Connect fitting to expose the plastic filament.
  8. Using a pair of cutters, cut the plastic material at a 45 degree angle.
  9. Wait for the print head to heat up then press "Next" on the touch screen.



  10. Take hold of the cut plastic material and help direct it free from the plastic extruder.  When it stops coming out, press “Stop” on the printer touch screen.



  11. Manually move the print head to the center of the printable area and press "Next" on the printer's touch screen.

  12. Allow the stepper motors to calibrate and then press "Done" on the printer's touch screen.



  13. Press "Done" to exit the utility or press "Retry" to re-calibrate the encoders.



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