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Mythos 1 Deep Clean

Remove Back Plate & Change Clump Crushers

The Victoria Arduino Mythos 1 is designed for precision, temperature stability, and consistency — but only when it’s properly maintained. Over time, coffee oils, fines, and wear to internal components (especially the clump crushers) can seriously affect grind flow and espresso quality.

In this guide, we walk through a full Mythos 1 deep clean, including back plate removal and changing the clump crushers — essential maintenance for any busy café.

Why This Deep Clean Matters

A surface clean won’t solve:

• ☕ Muted or muddy flavours

• ⚙️ Inconsistent grind flow

• ⏱️ Slower or uneven extractions

• 🌡️ Heat and airflow issues

• 👩🍳 Frustrating dial-ins

Worn or blocked clump crushers are one of the most common causes of poor grind distribution on the Mythos 1 — and they’re often overlooked.

How Often Should You Do This?

We recommend:

• ✅ Daily: Brush chute, wipe externals

• ✅ Weekly: Remove hopper, clean burr chamber

• ✅ Every 1–3 months (or as needed):
  Full deep clean + back plate removal + clump crusher inspection/replacement

High-volume cafés may need this more frequently.

What You’ll Need

Before starting:

• Grinder brush

• Vacuum (strongly recommended)

• Clean, dry cloths

• Screwdriver / hex key (for back plate)

• Replacement clump crushers (if worn)

• Empty hopper

• 20 minutes

⚠️ Always switch off and unplug the grinder before starting.

Step-by-Step: Mythos 1 Deep Clean

1. Empty the Hopper

• Remove all beans

• Run the grinder briefly to clear retained coffee

This prevents beans dropping into the burr chamber during cleaning.

2. Remove the Hopper

• Lift off the hopper

• Wipe inside thoroughly to remove old coffee oils

Old oils here will contaminate fresh coffee.

3. Access the Burr Chamber

• Adjust the grind coarser to relieve burr pressure

• Remove the top burr carrier

• Note your grind setting before removal

Brush away loose grounds.

4. Remove the Back Plate

• Unscrew and carefully remove the rear panel

• Keep screws safe

This exposes the fan, motor housing, and airflow pathways — critical for temperature stability.

5. Clean Internal Components

• Brush and vacuum built-up fines

• Pay close attention to:

  • Fan area

  • Air vents

  • Internal surfaces

⚠️ Do not use water or liquid cleaners inside the grinder.

6. Change the Clump Crushers

• Locate the clump crushers in the chute

• Remove the old crushers

• Inspect for:

  • Hardening

  • Tearing

  • Blockage

If worn, replace with new clump crushers — this makes an immediate difference to grind flow and consistency.

7. Clean the Chute

• Brush and vacuum thoroughly

• Ensure no compacted coffee remains

A clean chute + fresh clump crushers = smoother dosing.

8. Reassemble the Grinder

• Refit the back plate securely

• Reinstall burr carrier and hopper

• Return grind setting to original position

9. Test & Re-Dial In

• Add fresh beans

• Pull a test dose

• Check grind flow, shot time, and taste

A clean Mythos often needs a slight grind adjustment.

Common Mistakes to Avoid

• Forgetting to unplug the grinder

• Using water or chemicals internally

• Losing back-plate screws

• Ignoring worn clump crushers

• Not re-dialling after cleaning

Make It Part of Your Maintenance Routine

Regular deep cleaning and timely clump-crusher replacement:

• Improves flavour clarity

• Restores grind consistency

• Reduces waste

• Protects motor and burrs

• Makes dial-in faster and easier

This isn’t just maintenance — it’s good barista practice.