1. Product Overview
The COOL KNIGHT Electric Herb and Spice Grinder M150B is designed for efficient and quick grinding of various dry ingredients such as herbs, spices, and coffee beans. Its compact design and powerful motor ensure consistent results with ease of use.

Image 1: COOL KNIGHT Electric Herb and Spice Grinder (Wood Grain 2)
2. Safety Precautions
- Always ensure the lid is securely in place before operating the grinder. The device will not operate if the lid is not properly closed and pressed down.
- Do not immerse the main body of the grinder in water or any other liquid. Clean with a damp cloth and the provided brush.
- Keep hands and utensils away from the blades during operation.
- Unplug the grinder from the power outlet when not in use, before cleaning, or when adding/removing parts.
- This appliance is for household use only. Do not use outdoors.
- Do not grind wet, oily, or excessively hard ingredients.
3. Setup
3.1 Unboxing and Component Identification
Carefully remove all components from the packaging. Verify that all parts are present:
- Main Grinder Body (with stainless steel cup and blades)
- Inner Transparent Lid
- Outer Top Cover (Switch Button)
- Detachable Power Cord
- Cleaning Brush

Image 2: Disassembled view of the grinder components.
3.2 Power Connection
Connect the detachable power cord to the port at the base of the grinder. Ensure it is firmly inserted. Plug the other end into a standard 110V-120V AC power outlet.

Image 3: Connecting the detachable power cord.
4. Operating Instructions
4.1 Loading Ingredients
Remove the outer top cover and the inner transparent lid. Add your desired dry ingredients into the stainless steel cup. Do not exceed the 'MAX' fill line indicated inside the cup. The maximum capacity is 120g (4.2 oz).

Image 4: Maximum fill line inside the grinding cup.
4.2 Grinding Process
- After loading ingredients, place the inner transparent lid securely onto the stainless steel cup.
- Place the outer top cover onto the grinder body. Ensure it is properly aligned.
- To start grinding, gently press down on the outer top cover. The grinder will operate as long as pressure is applied.
- Release pressure to stop the grinding.

Image 5: One-button operation for grinding.
4.3 Achieving Desired Fineness
The fineness of the grind is controlled by the duration of operation:
- Coarse Grind: 3-5 seconds
- Medium Grind: 5-10 seconds
- Fine Grind: 10-15 seconds
Monitor the grinding process through the transparent lid to achieve your preferred consistency.

Image 6: Example of finely ground ingredients.
4.4 Multi-purpose Grinding
The COOL KNIGHT grinder is suitable for a variety of dry ingredients, including:
- Herbs
- Spices
- Coffee Beans
- Nuts
- Seeds

Image 7: Examples of ingredients suitable for grinding.
5. Maintenance
5.1 Cleaning
To clean the grinder:
- Unplug the power cord from the outlet and the grinder.
- Remove any remaining ground ingredients from the stainless steel cup.
- Use the provided cleaning brush to remove any residue from the blades and inside the cup.
- Wipe the stainless steel cup and blades with a damp cloth. Do not immerse the main body in water.
- The inner transparent lid and outer top cover can be washed with mild soap and water, then dried thoroughly.
5.2 Storage
Store the grinder in a dry place. The detachable power cord allows for easy storage and saves space.
6. Troubleshooting
- Grinder does not start: Ensure the power cord is securely plugged into both the grinder and a working electrical outlet. Verify that the inner transparent lid and outer top cover are correctly placed and pressed down firmly. The grinder has a safety mechanism that prevents operation if the lid is not properly engaged.
- Grinder stops during operation: The grinder is equipped with automatic power-off protection for overheating, short circuits, or if the outer lid is opened during operation. If the motor temperature control protection is activated after prolonged use, turn off the power and allow the unit to cool down for 15-20 minutes before resuming use.
- Inconsistent grind: Adjust grinding time according to desired fineness (refer to Section 4.3). Ensure ingredients are dry and not overloaded beyond the 'MAX' fill line.
7. Specifications
| Feature | Specification |
|---|---|
| Model Number | M150B |
| Brand | COOL KNIGHT |
| Voltage | 110 Volts |
| Motor Speed | 30,000 rotations per minute |
| Grinding Capacity | Max 120g / 4.2 oz |
| Blade Material | 304 Stainless Steel |
| Item Weight | 4.2 ounces |
| Package Dimensions | 7.62 x 4.59 x 4.02 inches |
| UPC | 721295380034 |
8. Warranty and Support
Specific warranty details are not provided in the product information. Please refer to your purchase documentation or contact the retailer for warranty information.
For product support, please contact COOL KNIGHT customer service through the retailer's platform or the official brand website, if available.