If your Breville Bambino Plus is experiencing frequent grinder clogs, it can disrupt your coffee routine and potentially damage the machine. This issue is often caused by residual coffee oils, stale grounds, or improper grind settings. Fortunately, with careful troubleshooting and maintenance, you can resolve the problem and restore optimal performance.
In this guide, we’ll walk you through practical, safe, and effective steps to fix a grinder that keeps clogging, ensuring you continue to enjoy café-quality espresso at home. Remember, regular cleaning and proper usage are key to preventing future issues.
Key Takeaways
| Regular Cleaning | Cleaning the grinder and burrs prevents oil buildup that causes clogs. |
| Proper Grind Settings | Using the correct grind size reduces strain on the grinder and minimizes blockages. |
| Use Fresh Coffee Grounds | Stale grounds tend to clump and clog the grinder; fresh beans help maintain flow. |
| Routine Maintenance | Consistent descaling and replacing filters prolong machine life. |
| Check for Blockages | Inspect and clear any jammed grounds or debris in the grinding pathway. |

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Identify the Cause of the Clog
- First, turn off and unplug your Breville Bambino Plus to ensure safety.
- Remove the bean hopper and the portafilter to access the grinder chamber.
- Check for visible blockages or jammed coffee grounds within the burrs and chute.
- Note if the coffee grounds appear stale or clumped, which can contribute to clogging.
- If the grinder struggles or makes unusual noises, this indicates a buildup of residual oils or grounds.

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Clean the Grinder Thoroughly
- Remove the hopper and empty any remaining beans.
- Use a soft brush or a dedicated grinder cleaning tool to sweep away coffee grounds and oils from the burrs and chute.
- For a deeper clean, run a small amount of grinder cleaning tablets designed for Breville (such as BREVILLE BEC250 or compatible products) through the grinding cycle.
- Wipe all accessible parts with a damp cloth, avoiding water contact with motor components.
- Reassemble the hopper and check for smooth movement of the burrs.
Adjust the Grind Settings
If your grind setting is too fine, it can cause frequent clogs. Set the grinder to a slightly coarser setting and test with a small amount of coffee. Gradually adjust until you find a balance between grind size and flow rate.
Always use the recommended grind size for espresso—generally fine but not so powdery that it impedes flow.
Use Fresh Coffee Grounds
Old or stale coffee grounds tend to clump, which can block the grinder. Use fresh, high-quality beans and grind only what you need for each shot. Store beans in a cool, airtight container to maintain freshness.
Grinding in small batches reduces the chance of grounds compacting and clogging the pathway.
Routine Maintenance and Prevention
Regularly clean the grinder and burrs every few weeks, especially if you use the machine daily. Use approved cleaning tablets periodically to dissolve residual oils and prevent buildup.
Replace water filters (such as Breville Charcoal Filters or Possiave Water Filters) regularly to prevent water impurities from affecting the grinder and internal components.
Always follow manufacturer instructions for maintenance to avoid voiding warranties or damaging the machine.
The Products in This Guide

Breville Bambino Plus
- ✔ Warranty: 1 Year
- ✔ Capacity: 64 oz Water Tank
- ✔ Grind Adjustments: Multiple Settings

Breville BEC250 Espresso Machine Cleaning Tablets
- ✔ Pack Size: 8 Tablets
- ✔ Grade: Food Grade
- ✔ Purpose: Cleaning Residues
Breville Bambino Plus

The Breville Bambino Plus combines compact design with professional features like dose control grinding and optimal water pressure. Its quick heat-up time and user-friendly interface make it ideal for espresso enthusiasts looking for quality results at home.
Pros:
- Fast heat-up with ThermoJet system
- Precise dose control for consistency
- Sleek black stainless steel finish
- Easy to clean and maintain
Cons:
- Grinder can clog if not properly maintained
- Limited water reservoir size
- Requires regular descaling
Best for: Home baristas seeking café-quality espresso with minimal fuss
Not ideal for: Users who prefer larger capacity machines or commercial-grade equipment
Bottom line: A compact and efficient espresso machine perfect for home use, with minor maintenance needed to prevent clogging.
Breville BEC250 Espresso Machine Cleaning Tablets

Using Breville BEC250 Cleaning Tablets helps dissolve coffee oils and residues, preventing clogging and ensuring your machine operates smoothly over time.
Pros:
- Official Breville product
- Effective at removing oils and residues
- Safe and pharmaceutical grade
- Easy to use
Cons:
- Requires regular use for best results
- Only suitable for cleaning, not descaling
Best for: Maintaining your espresso machine’s cleanliness and performance
Not ideal for: For descaling mineral build-up in hard water regions
Bottom line: A reliable choice for keeping your Breville espresso machine clean and in top condition.
Frequently Asked Questions
Why does my Breville grinder keep clogging?
Clogging often results from stale or oily coffee grounds, improper grind size, or infrequent cleaning. Regular maintenance and using fresh beans help prevent this issue.
How often should I clean the grinder?
It’s best to clean the grinder every 2-4 weeks if used daily. Use dedicated cleaning tablets monthly to dissolve oils and residues.
Can I use regular cleaning tablets in my Breville machine?
Only use tablets specifically designed for espresso machines, like Breville BEC250 or compatible products, to avoid damage and ensure effective cleaning.
What grind setting should I use to prevent clogging?
Set the grinder to a slightly coarser setting if you experience frequent clogs. The ideal setting varies by beans and preference, so adjust gradually.
Is descaling related to grinder clogging?
Descaling addresses mineral build-up in the water system, which can affect internal components. While not directly related to grinding, regular descaling helps overall machine performance.
Keep Your Breville Bambino Plus Running Smoothly
Maintaining your Breville Bambino Plus involves regular cleaning, proper grind settings, and using fresh coffee grounds. By following these steps, you can prevent grinder clogs and ensure your machine consistently delivers high-quality espresso.
Remember, routine maintenance extends the lifespan of your machine and preserves its performance. A little proactive care goes a long way in enjoying café-quality coffee at home every day.
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