Follow these steps to reset your Velpro 400:
Phase 1: Preparation
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Get Your Tools Ready
You will need a screwdriver and the cleaning brush included with your grinder.
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Clear the Grinder
Empty the bean hopper completely. Ensure there are no coffee beans left in the grind chamber.
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Clean the Burrs
Remove the burr assembly. The removed components should include the bean hopper, outer ring cover, inner ring cover, grind setting dial, bolt, rotating burr and carrier, and spring. Clean the grinding chamber and the flat burrs thoroughly using the brush. Ensure there is no residual powder or leftover beans.
Phase 2: Check the Mark Before Calibration
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Reinstall
Make sure the burr, inner ring cover, and grind setting dial are correctly installed.
Crucial Step: The positioning dot on the inner ring cover must align with the positioning dot on the grinder body (see the red box in the image below).
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Troubleshooting Dial Mark Position
If the dots do not align when tightened:
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Turn the grind setting dial about 10-20 clicks towards the "Coarse" direction (larger numbers).
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Try tightening the inner ring cover clockwise again.
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Check if the dots align. If not, repeat the process until they do.
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Once aligned, turn the grind setting dial about 10 clicks towards the "Coarse" direction (larger numbers).
Phase 3: The Calibration Process
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Run on Empty
Keep the Velpro 400 empty (no beans in the grind chamber). Turn on the grinder and set the rotational speed (RPM) to 15.
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Find the Zero Point
Slowly turn the grind setting dial towards the "Fine" direction (smaller numbers). Make small adjustments until you hear a slight sound of the burrs touching. STOP immediately and turn off the grinder.
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Remove the Grind Setting Dial
Carefully remove the grind setting dial. Do not rotate the dial while doing this. You will see that the indicator is not currently at "0"—this is what we are fixing.
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Remove the Grind Adjustment Knob
Unscrew the positioning screws and take off the grind adjustment knob (the part with the numbers).
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Start the Calibration
Rotate the grind adjustment knob and make the "9" align exactly with the calibration mark.
Note: Do not rotate the burr adjustment gear during this step.
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Reinstall and Check
Place the knob back onto the grind setting dial. You should see it is now calibrated to the "9" position.
Note: To reinstall the knob correctly, make sure the “1” and “2” alignment marks are lined up before pressing the knob back into place.
Reinstall the four screws on the grind adjustment knob.
Phase 4: The Final Buffer Adjustment
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Reattach the Grind Setting Dial to the machine.
After reinstalling the Grind Setting Dial correctly onto the VelPro 400, you should see the alignment shown in the image below.
Reinstall the outer ring cover, then rotate the grind adjustment knob toward the “0” position and stop at “0”.
(This creates enough clearance between the burrs, allowing coffee beans to enter the grinding chamber smoothly while preventing burr contact and protecting the burrs. Therefore, after calibration, we do not recommend using grind settings below “0”.)
(This creates enough clearance between the burrs, allowing coffee beans to enter the grinding chamber smoothly while preventing burr contact and protecting the burrs. Therefore, after calibration, we do not recommend using grind settings below “0”.)
Need More Help?
We’re committed to making sure your GEVI grinder delivers the performance you expect.
If you still experience issues after calibration, our support team is here to help.
Email: service@gevi.com
Phone: +1 855-992-2888
