Introduction
This manual provides detailed instructions for the safe and efficient operation, maintenance, and troubleshooting of your Tuni Silver Conical Burr Coffee Grinder and Tuni Mini Coffee Scale. Please read this manual thoroughly before using the products to ensure optimal performance and longevity.
The Tuni Silver Conical Burr Coffee Grinder features 48 adjustable grind settings and a patented anti-static 40mm conical burr for precise and consistent grinding. The Tuni Mini Coffee Scale is equipped with a high-precision sensor, offering multiple measurement units and modes for accurate coffee preparation.
Important Safety Instructions
- Read all instructions before use.
- Do not immerse the grinder or scale in water or other liquids.
- Keep hands and utensils out of the bean hopper and ground coffee container during operation.
- Unplug the grinder from the outlet when not in use, before putting on or taking off parts, and before cleaning.
- Do not operate any appliance with a damaged cord or plug, or after the appliance malfunctions or has been dropped or damaged in any manner.
- Use only attachments recommended or sold by the manufacturer.
- This appliance is for household use only.
Product Components
Tuni G1 Conical Burr Coffee Grinder

- Bean Hopper (250g/8.8oz capacity)
- Grind Adjustment Collar
- Conical Burrs (Upper and Lower)
- Grinder Body with Control Panel (LED display, Start/Stop button, Grind Time/Cup Size adjustment)
- Ground Coffee Container (75g/2.6oz capacity)
- Portafilter Holder
- Cleaning Brush
Tuni Mini Coffee Scale

- Tempered Glass Weighing Platform
- Hidden LED Display
- Power/Tare Button
- Timer Button
- Unit Conversion Button (g, ml, oz)
Setup
Grinder Setup
- Unpacking: Carefully remove all components from the packaging. Retain packaging for future storage or transport.
- Cleaning: Before first use, wipe the exterior of the grinder with a damp cloth. Wash the bean hopper and ground coffee container with warm, soapy water, rinse thoroughly, and dry completely.
- Assemble Hopper: Place the bean hopper onto the grinder body, ensuring it is securely locked in place.
- Power Connection: Plug the grinder into a grounded electrical outlet.
Scale Setup
- Unpacking: Remove the scale from its packaging.
- Charging: If necessary, charge the scale using the provided USB cable until fully charged.
- Placement: Place the scale on a flat, stable, and level surface to ensure accurate readings.
Operating Instructions
Using the Tuni G1 Coffee Grinder

- Add Beans: Fill the bean hopper with whole roasted coffee beans. The hopper has a capacity of 250g (8.8oz).
- Select Grind Setting: Rotate the grind adjustment collar to select your desired grind size. The grinder offers 48 settings, suitable for:
- Espresso: Settings 0-16 (very fine)
- Drip/Pour Over: Settings 16-32 (medium)
- French Press: Settings 32-48 (coarse)

Image: A detailed view of the Tuni G1 Coffee Grinder's control panel and grind adjustment collar, emphasizing the 48 precision settings. - Choose Output Method: Place either the ground coffee container or your portafilter (using the included holder) under the dispensing chute.
- Set Grind Time/Cups: Use the control panel to adjust the grind time in 0.5-second increments (up to 40 seconds) or select the desired number of cups (2 to 12 cups).
- Start Grinding: Press the Start/Stop button to begin grinding. The grinder will automatically stop once the set time or quantity is reached. You can also manually stop grinding by pressing the button again.
- Empty Container: Once grinding is complete, remove the ground coffee container or portafilter.
Using the Tuni Mini Coffee Scale

- Power On: Press the Power button to turn on the scale. The hidden LED display will illuminate.
- Select Unit: Press the Unit Conversion button to cycle through available units: grams (g), milliliters (ml), and ounces (oz).
- Tare Function: Place an empty container on the weighing platform. Press the Power/Tare button to zero out the weight of the container.
- Weighing: Add your ingredients (e.g., coffee beans, water) to the container. The display will show the precise weight.
- Timer Function:
- Manual Timing: Press the Timer button to start the timer. Press again to pause, and a third time to reset.
- Automatic Mode: The scale features an automatic mode that can detect changes in weight and start the timer automatically, ideal for pour-over brewing. Refer to the scale's specific instructions for activating this mode.
- Powder/Water Ratio Mode: This mode assists in maintaining specific brewing ratios.
- Flow Rate Mode: Displays the flow rate of liquid, useful for precise pour-over techniques.
- Power Off: Press and hold the Power button to turn off the scale. The scale will also auto-shutoff after a period of inactivity to conserve battery.
Maintenance and Cleaning
Grinder Cleaning
- Unplug: Always unplug the grinder before cleaning.
- Empty Hopper: Remove any remaining coffee beans from the hopper.
- Remove Burrs: Carefully remove the upper burr. Use the provided cleaning brush to brush away any coffee grounds from both the upper and lower burrs.
- Clean Chute: Use the brush to clean the dispensing chute.
- Wipe Exterior: Wipe the exterior of the grinder body with a soft, damp cloth. Do not use abrasive cleaners or immerse the grinder in water.
- Reassemble: Reassemble the burrs and hopper once all parts are dry.
Scale Cleaning

- Wipe the tempered glass surface with a soft, damp cloth.
- Do not use harsh chemicals or abrasive materials.
- The scale is water-resistant, but do not immerse it in water.
Troubleshooting
Grinder Issues
| Problem | Possible Cause | Solution |
|---|---|---|
| Grinder not starting. | Not plugged in; power outage; hopper not correctly seated; motor overheated. | Ensure plug is securely in outlet; check power supply; ensure hopper is locked in place; allow grinder to cool down for 30 minutes. |
| Inconsistent grind. | Burrs are dirty or clogged; incorrect grind setting for bean type. | Clean burrs thoroughly; adjust grind setting to a finer or coarser level as needed. |
| Grinder is loud or struggling. | Beans are too oily/hard; burrs are clogged. | Clean burrs; try different beans; do not overfill hopper. |
Scale Issues
| Problem | Possible Cause | Solution |
|---|---|---|
| Inaccurate readings. | Scale not on a flat surface; battery low; overloaded; external vibrations. | Place on a stable, level surface; recharge battery; do not exceed 2000g capacity; avoid vibrations during use. |
| Display not turning on. | Battery depleted. | Charge the scale using the provided USB cable. |
Specifications
Tuni G1 Conical Burr Coffee Grinder
- Grind Settings: 48 precision settings
- Burr Type: 40mm Stainless Steel Conical Burr
- Grinding Speed: 450 RPM (revolutions per minute)
- Bean Hopper Capacity: 250g (8.8oz)
- Grounds Container Capacity: 75g (2.6oz)
- Grind Time Adjustment: 1-40 seconds (0.5s increments)
- Cup Selection: 2-12 cups
- Dimensions: 7.08" x 4.52" x 14.0"
- Body Material: Stainless Steel
Tuni Mini Coffee Scale
- Measurement Range: 0.3g - 2000g (0.01oz - 70.5oz)
- Accuracy: 0.1g
- Units: g, ml, oz
- Timer: Max 99 minutes 59 seconds
- Modes: Manual Timing, Automatic Mode, Powder/Water Ratio Mode, Flow Rate Mode
- Display: Hidden LED Tempered Glass Display
- Power: Rechargeable (USB)
- Dimensions: Approximately 4.1" x 4.1" x 0.8"
- Product Weight: 0.33lb
Warranty and Support
Tuni products are manufactured with high-quality materials and craftsmanship. For warranty information and customer support, please refer to the warranty card included with your product or visit the official Tuni website. Please have your product model number and purchase date available when contacting support.
Official Tuni Store: Visit the Tuni Store on Amazon





