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Most super automatic espresso machines are equipped with grinders that allow the machine — and in many cases the user — to control grind size and coffee dose. Understanding how grinder adjustments work, and how they interact with dose and extraction, is key to getting the best possible espresso from your machine.
This guide explains how grinder adjustment works on super automatic espresso machines, what to expect from different settings, and how to dial in your coffee properly without damaging the machine or over-adjusting.
Where to Find the Grinder Adjustment
On most super automatic espresso machines, the grinder adjustment dial or knob is located:
• Inside the bean hopper (most common)
• Near the grinder motor
• In fewer cases, behind a service panel or service door
The adjustment is usually marked with:
• Numbers
• Dots
• Or icons indicating fine → coarse
If you do not see an adjustment knob anywhere on your machine, you may have a model that does not allow manual grinder adjustment.
How Different Brands Handle Automatic Dosing
Not all automatic systems work the same way.
De’Longhi (e.g., Magnifica series)
Most De’Longhi super automatic machines use a time-based dosing system. The machine grinds for a set duration depending on the selected strength (aroma level). A stronger setting increases grind time; a lighter setting reduces it. The burr spacing remains fixed unless manually adjusted by the user.
Philips (EP 1200 / 2200 / 3200 series)
Philips machines use an adaptive dosing system. In addition to grind time presets for light, medium, and strong aroma, the machine monitors brew unit motor effort during brewing and rinsing cycles. If resistance is too low or too high, the machine subtly adjusts grind duration over time to stabilize extraction.
This is not weight-based dosing, but it is a feedback-driven correction system.
Jura (I.P.B.A.S. – Intelligent Pre-Brew Aroma System)
Jura machines combine grind-time dosing with their I.P.B.A.S. system. This system pulses water onto the coffee puck before full extraction, allowing the grounds to pre-expand and extract more evenly. By stabilizing extraction through controlled pre-infusion, Jura improves consistency and cup quality without relying solely on grind timing.
Each brand approaches dosing differently, but all aim to balance grind size, dose, and water flow for optimal extraction.
Understanding Grind Size: Fine vs Coarse
For machines with manual grinder adjustment:
• Lower numbers / smaller dots = finer grind
• Higher numbers / larger dots = coarser grind
What This Means in the Cup
Finer grind
• Slower water flow
• Stronger, more concentrated espresso
• More resistance in the brew unit
Coarser grind
• Faster water flow
• Lighter-bodied, milder espresso
• Less brew pressure
Grind size controls how quickly water passes through the coffee puck, directly affecting strength, body, and flavor intensity.
Coffee Dose and Its Impact on Flavor
Most super automatic machines allow you to adjust coffee strength (dose), typically in the range of approximately 7–10 grams per shot, depending on the brand and model.
• Lower dose (around 7 g)
• Faster extraction
• Lighter flavor
• Higher dose (closer to 10 g)
• Slower extraction
• Fuller body and stronger flavor
Even on machines with adaptive dosing (like Philips) or advanced extraction systems (like Jura), grind time remains the foundation of dose control.
How Different Brands Handle Automatic Dosing
Not all automatic systems work the same way.
De’Longhi (e.g., Magnifica series)
Most De’Longhi super automatic machines use a time-based dosing system. The machine grinds for a set duration depending on the selected strength (aroma level). A stronger setting increases grind time; a lighter setting reduces it. The burr spacing remains fixed unless manually adjusted by the user.
Philips (EP 1200 / 2200 / 3200 series)
Philips machines use an adaptive dosing system. In addition to grind time presets for light, medium, and strong aroma, the machine monitors brew unit motor effort during brewing and rinsing cycles. If resistance is too low or too high, the machine subtly adjusts grind duration over time to stabilize extraction.
This is not weight-based dosing, it's feedback from certain variable the machine tracks and adjust on it own.
Jura (I.P.B.A.S. – Intelligent Pre-Brew Aroma System)
Jura machines combine grind-time dosing with their I.P.B.A.S. system. This system pulses water onto the coffee puck before full extraction, allowing the grounds to pre-expand and extract more evenly. By stabilizing extraction through controlled pre-infusion, Jura improves consistency and cup quality without relying solely on grind timing.
Each brand approaches dosing differently, but all aim to balance grind size, dose, and water flow for optimal extraction.
The best results come from finding the right balance between grind size and dose, rather than maximizing either setting on its own.
How to Adjust the Grinder Properly
When making grinder adjustments, follow these rules:
-
Only adjust one step or one dot at a time
-
After adjusting, make 1–2 coffees before judging the result
-
Expect some residual coffee from the previous grind setting
Avoid making large adjustments, as this makes it harder to dial in and can interfere with the machine’s internal calibration.
If your machine uses adaptive systems (Philips) or intelligent pre-infusion (Jura), remember that the software may also be making small corrections in the background.
Machine Self-Learning After Adjustments
Even when you manually adjust grind size or dose, many super automatic machines continue to self-adjust internally.
It’s normal for a machine to take:
• 5–10 coffees to fully stabilize after a grinder change
• 5–10 coffees to adapt when switching to a new coffee bean
Machines with adaptive dosing (like Philips) monitor brew resistance over multiple cycles. Machines with advanced pre-infusion systems (like Jura) optimize extraction consistency through puck expansion and pressure stabilization.
If you’ve just changed beans, it’s best to wait before adjusting the grinder, allowing the machine time to adapt on its own.
Troubleshooting Common Grinder Issues
No Coffee Coming Out?
In most cases, this indicates:
• The grind is too fine
• The dose is too high
Very oily beans or grinder buildup can also contribute. Ease the grind setting slightly and allow the machine to adjust.
Coffee Tastes Weak or Watery?
• Grind may be too coarse
• Dose may be too low
Try increasing the dose or moving slightly finer.
Remember: different coffee beans grind differently, and even two identical machines from the factory can require different grinder settings in real-world use.
A Note on Crema and Coffee Blends
For those who enjoy a thick layer of crema (Like on the Roccobar Gran Crema):
• Super automatic machines tend to perform best with blended coffees
• A blend containing 20–30% Robusta typically produces more crema
Robusta increases crema potential, especially in super automatic machines, though freshness and roast level also play a role.
More back pressure generally produces more crema, but this does not mean using the finest grind with the highest dose. Instead, aim for:
• Balanced grind size
• Appropriate dose
• A coffee blend suited to super automatic machines
Final Tips for Best Results
• Avoid copying grinder numbers from a retailer or a friend
• Dial in your machine with your beans, in your environment
• Make small changes and give the machine time to respond
• Taste is the final judge — not numbers on a dial
Understanding how your specific brand handles grind size and dose — whether time-based (De’Longhi), adaptive (Philips), or enhanced with intelligent pre-infusion (Jura) — helps you make better adjustments and consistently enjoy better espresso.