Eureka Mignon Libra Grind-by-Weight Guide

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The Libra grinds by weight using Eureka’s Instant Grind Weighing Technology: set two target weights and it delivers each dose. These steps follow Eureka’s Mignon Libra user manual.

Which models this covers: One model: the Eureka Mignon Libra grind-by-weight grinder.

Jump to: Setting up · Grinding by weight · Everyday care · Cleaning the hopper and burrs · Burrs and servicing

Watch: Mignon Libra – How to Use

Official video by Eureka Grinders.

Setting up

  1. Fit the hopper, fill it with whole beans and set the fork height for your portafilter.
  2. The Libra is calibrated at the factory, so it is ready to use.

Grinding by weight

  1. Program your two dose weights on the touch display (Eureka’s “How to Use” video shows how), or use continuous grinding.
  2. Adjust grind size with the stepless knob, in small steps, and test with a fresh dose.
  3. If doses stop matching your scale, recalibrate the portafilter fork: Eureka’s recalibration video and manual section 5.5 show the button sequence. Only needed if calibration is lost.

Everyday care

  1. Brush any grounds from the chute and fork after use.
  2. Wipe the body with a dry or barely damp cloth.

Cleaning the hopper and burrs

  1. Always unplug the grinder before cleaning. Never use water jets or steam cleaners on it.
  2. Hopper: Eureka recommends washing the inside of the hopper with water and mild soap at least once a week to remove coffee oils. Dry fully before refitting.
  3. Grinder cleaning granules (such as Cafetto Grinder Clean) can be run through the burrs to absorb oils – Eureka allows food-safe grinder cleaning tablets for a complete clean.
  4. For a deeper clean, Eureka shows how to open the upper burr holder and brush or vacuum the burrs (see the official burr video). If you would rather not open it, we can do it at service.

Burrs and servicing

  • Burrs wear slowly. Have them checked when the grind becomes inconsistent or slow, or with your machine service: every 12 months for home use, every 6 months in cafés.

More official Libra videos

Mignon Libra – Recalibration

Mignon Libra – Instant Grind Weighing Technology

Reorder cleaning supplies

Prefer to order by phone? Call us on 1300 357 575.

Official manual and resources

Shop this model

Need a hand?

Call Coffee Machines and Beans on 1300 357 575, or book a service.
1/48 Shandan Circuit, Albion Park Rail NSW 2527

Servicing: have your grinder checked every 12 months for home use, or every 6 months in cafés and busy commercial sites.

Videos are by Eureka Grinders and are played from the official YouTube channel. Written steps are based on Eureka’s official user manuals. Always follow the manual supplied with your machine.