1. Introduction
Thank you for choosing the Aigostar Electric Coffee Grinder. This manual provides essential information for the safe and efficient operation, maintenance, and troubleshooting of your new coffee grinder. Please read it thoroughly before first use and keep it for future reference.
The Aigostar Electric Coffee Grinder is designed to provide a professional coffee grinding experience at home, featuring 52 precise grinding settings and a durable conical burr system.
2. Important Safety Instructions
When using electrical appliances, basic safety precautions should always be followed, including the following:
- Read all instructions before using the appliance.
- Do not immerse the appliance, power cord, or plug in water or other liquids.
- Close supervision is necessary when any appliance is used by or near children.
- Unplug from outlet when not in use, before assembling or disassembling parts, and before cleaning.
- Avoid contact with moving parts.
- Do not operate any appliance with a damaged cord or plug, or after the appliance malfunctions or has been damaged in any manner.
- The use of attachments not recommended or sold by the manufacturer may cause fire, electric shock, or injury.
- Do not use outdoors.
- Do not let cord hang over edge of table or counter, or touch hot surfaces.
- Do not place on or near a hot gas or electric burner, or in a heated oven.
- Always ensure the bean hopper lid is securely in place before operating.
- This appliance is for household use only.
3. Product Components
Familiarize yourself with the parts of your Aigostar Electric Coffee Grinder:

- Bean Hopper: Transparent container for whole coffee beans (320g capacity).
- Bean Hopper Lid: Covers the bean hopper.
- Grinding Adjustment Ring: Located below the bean hopper, used to select grind fineness.
- Control Panel: Features LED display and control buttons (MODE, +, -, Play/Pause).
- Grinding Outlet: Where ground coffee is dispensed.
- Ground Coffee Container: Collects ground coffee (130g capacity).
- Portafilter Holders: Two sizes (51-54mm and 58mm) for direct grinding into a portafilter.
- Base Unit: Main body of the grinder.
- Cleaning Brush: For maintenance of the burrs and grinding area.
4. Setup Guide
- Unpack: Carefully remove all components from the packaging.
- Clean: Wash the bean hopper, bean hopper lid, and ground coffee container with warm, soapy water. Rinse thoroughly and dry completely. Wipe the main unit with a damp cloth.
- Assemble Bean Hopper: Place the bean hopper onto the top of the grinder. Rotate it clockwise until it locks securely into place. Ensure the grinding adjustment ring is properly aligned.
- Position Container/Holder:
- For collecting ground coffee in the container: Place the ground coffee container directly under the grinding outlet.
- For direct grinding into a portafilter: Select the appropriate portafilter holder (small for 51-54mm, large for 58mm) and insert it into the designated slot under the grinding outlet. Place your portafilter onto the holder.

The grinder includes two portafilter holders for direct grinding into 51-54mm or 58mm portafilters. - Connect Power: Plug the power cord into a suitable electrical outlet.
5. Operating Instructions
Follow these steps to grind your coffee beans:
- Fill Bean Hopper: Open the bean hopper lid and pour whole coffee beans into the hopper. Replace the lid securely. The hopper has a 320g capacity.
- Select Grinding Fineness: Rotate the grinding adjustment ring to select your desired fineness level. Refer to the "Grinding Settings" section for guidance.
- Choose Grinding Mode:

The control panel with LED display and buttons for mode selection and adjustment. - Press the MODE button to switch between "Cup Mode" (indicated by a cup icon) and "Time Mode" (indicated by a clock icon).
- In Cup Mode, use the + and - buttons to select the number of cups (1-10 cups).
- In Time Mode, use the + and - buttons to select the grinding duration (1-50 seconds).
- If using a portafilter, the recommended grinding time is 5-20 seconds.
- Start Grinding: Press the Play/Pause (▶II) button to start grinding. The grinder will automatically stop once the selected time or cup quantity is reached.
- Stop Grinding (Manual): You can press the Play/Pause (▶II) button again at any time to manually stop the grinding process.
- Remove Ground Coffee: Once grinding is complete, carefully remove the ground coffee container or portafilter.
Video: Aigostar Flavor Electric Coffee Grinder product overview, demonstrating features like bean hopper, grinding settings, control panel, portafilter holders, and cleaning.
6. Grinding Settings
The Aigostar coffee grinder offers 52 precise grinding settings to suit various brewing methods. Adjust the grinding adjustment ring to achieve the desired fineness:

| Grind Level | Fineness | Brewing Method |
|---|---|---|
| 1-5 | Extra Fine | Turkish Coffee |
| 6-15 | Fine | Espresso |
| 16-25 | Medium-Fine | Moka Pot |
| 26-35 | Medium | Drip Coffee, Pour Over |
| 36-52 | Coarse | French Press, Cold Brew |
7. Cleaning and Maintenance
Regular cleaning ensures optimal performance and extends the lifespan of your grinder.
- Unplug: Always unplug the grinder from the power outlet before cleaning.
- Empty Hopper: Remove any remaining coffee beans from the bean hopper.
- Remove Bean Hopper: Rotate the bean hopper counter-clockwise to unlock and remove it from the unit.
- Clean Burrs:
- The upper grinding disc (burr) is removable for easy cleaning. Unlock it by rotating and lift it out.
- Use the provided cleaning brush to remove any coffee grounds from both the upper and lower burrs, as well as the grinding chamber.
- Do not wash the burrs with water.
- Clean Containers: Wash the bean hopper, bean hopper lid, and ground coffee container with warm, soapy water. Rinse thoroughly and dry completely before reassembling.
- Wipe Main Unit: Wipe the exterior of the main unit with a soft, damp cloth. Do not use abrasive cleaners or immerse the unit in water.
- Anti-static Feature: The anti-static design helps keep the coffee powder container and work surface clean. Gently tapping the bean hopper lid after each grinding session can further reduce residual dust.
- Reassemble: Ensure all parts are dry before reassembling the grinder. Lock the bean hopper back into place.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Grinder does not start. | Not plugged in; bean hopper not correctly locked; power outage. | Ensure the grinder is plugged in. Check if the bean hopper is securely locked. Verify power supply. |
| Inconsistent grind. | Burrs are dirty or clogged; incorrect grind setting. | Clean the burrs and grinding chamber thoroughly. Adjust to a more appropriate grind setting for your brewing method. |
| Grinder stops during operation. | Overheating; motor overload; beans jammed. | Unplug and let the unit cool down. Check for any jammed beans and clear them. Do not exceed maximum grinding time. |
| Coffee grounds flying/static. | Environmental humidity; very dry beans. | While the grinder has anti-static technology, some static can occur. Try a light mist of water on beans before grinding (RDT method) or ensure the container is completely dry. |
9. Technical Specifications
| General Specifications | |
|---|---|
| Brand Name | AIGOSTAR |
| Model | Electric Coffee Grinder |
| Power Source | Electric |
| Power (W) | 180W |
| Motor Speed | 600 U/min (RPM) |
| Type | Burr Grinders (Conical) |
| Burr Material | 420 Stainless Steel (40mm) |
| Number of Grinding Levels | 52 |
| Loading Coffee Beans Capacity | 320g |
| Ground Coffee Container Capacity | 130g |
| Housing Material | Stainless steel |
| Certification | CE, RoHS |

10. User Tips
- Fresh Beans: Always use fresh, high-quality whole coffee beans for the best flavor.
- Grind Just Before Brewing: For optimal freshness and aroma, grind your coffee beans immediately before brewing.
- Experiment with Settings: Don't hesitate to experiment with different grind settings to find what works best for your specific coffee beans and brewing method. Even within the recommended ranges, slight adjustments can make a big difference.
- Regular Cleaning: Clean the burrs and grinding chamber regularly to prevent oil buildup and ensure consistent grind quality. Coffee oils can become rancid and affect flavor.
- Avoid Overfilling: Do not overfill the bean hopper or ground coffee container to prevent jams and ensure smooth operation.
11. Warranty and Support
For warranty information, product support, or service inquiries, please refer to the documentation provided with your purchase or contact Aigostar customer service directly. Keep your proof of purchase for warranty claims.





