Grinder Troubleshooting Guide
Common grinder problems and solutions from Kanen Coffee's Berkeley repair workshop
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Grinder runs but no output
Common causes: Foreign object jamming burrs, broken burr carrier, worn burrs, or clogged chute.
Solutions:
- Remove hopper and check for stones or debris
- Clean thoroughly with brush
- Inspect burrs for damage or wear
- Replace burrs if edges are rounded (every 300-500 lbs)
- Check burr carrier for cracks
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Common grinder problems
Inconsistent grind size:
- Worn burrs need replacement (every 300-500 lbs coffee)
- Check burr alignment and calibration
- Clean coffee oil buildup
- Ensure hopper is properly seated
Grinder making loud grinding noise:
- Foreign object in burrs (immediately stop and check)
- Burrs touching (needs recalibration)
- Worn burr carrier or motor bearings
- Coffee beans too oily or stale
Grinder won't turn on:
- Check safety switches (hopper, grounds bin)
- Test thermal overload protection (let cool 30 min)
- Inspect power cord and switch
- Motor capacitor may need replacement
Coffee clumping or static:
- Add 1-2 drops of water to beans (RDT method)
- Use anti-static spray on catch bin
- Check humidity levels (40-60% ideal)
- Clean chute and exit point regularly
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Burr maintenance schedule
Daily maintenance:
- Empty and wipe hopper
- Brush out grounds from chute
- Clean dosing area
Weekly maintenance:
- Deep clean with grinder cleaning tablets
- Remove and clean hopper thoroughly
- Vacuum around burr chamber
Monthly maintenance:
- Remove upper burr and clean both burrs
- Check burr sharpness and alignment
- Clean all coffee oil residue
Annual maintenance:
- Professional service and calibration
- Replace burrs if needed
- Motor bearing inspection
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Grinder troubleshooting tips
When to replace burrs:
- After 300-500 lbs of coffee (home use: 2-3 years)
- When grind becomes inconsistent
- If burr edges appear rounded or damaged
- When you can't get fine enough grind
Grinder brands we service:
- We sell and service: Eureka, Baratza, Breville grinders
- We also repair: Mazzer, Compak, Mahlkonig, Rancilio, and most major brands