Fits All Dry Material: Multi-function grinder can grind ALL DRY materials such as grain, spice, coffee beans, nutmeg, vanilla, bay leaf, birdseed, dog food, pepper, chili, etc. Large grinders over 2000g can even grind hard stones. WALNUTS and ALMONDS with high oil content and wet materials are NOT SUITABLE! The amount of material should be between the covering long blade and 2/3 of the capacity of the sharpening box. GRAIN MILL WITH IMPROVED SAFETY COVER: The open-cover-stop type grain mill will automatically stop the operation when the cover is opened, which greatly increases safety and protects the user from injury. TWO INDUCTION SWITCHES: There are two induction switches in the buckles on both sides, which only allow the spice grinder to be started when the lid is completely closed. So if the grinder does not turn on at the first time, please adjust the lid as the steps in picture 5. OVERLOAD PROTECTION & 0-6 MIN TIMER SWITCH: When the Pepper Spice Grinder is in an overloaded/overheated condition, the overload protection will automatically kick in to stop the operation. It is easy to solve by replacing the carbon brushes on both sides and then pressing the overload protection again, then the grinder could work well. #1: 800g Electric Grain Mill: Type: Electric Grain Mill Capacity: 800g Load Power: 2400W Speed: 25000 rpm Continuous working time: less than 5 minutes Interval time: 5-10 minutes Powder fineness: 60-300 mesh Crush Level: Superfine Crush Packaging dimensions: 14.5 x 13.5 x 34 cm (LxWxH) #2: 2500g Electric Grain Mill: Type: Electric Grain Mill Capacity: 2500g Charging Power: 4000W Speed: 32000 rpm Continuous working time: less than 5 minutes Interval time: 5-10 minutes Powder fineness: 60-300 mesh Crush Level: Superfine Crush Packaging dimensions: 20.5 x 13.5 x 35 cm (LxWxH). Our grinder can only be turned on after the lid is fully closed. Please follow the steps to close the lid in the manual and video. The materials ready for grinding must be DRY enough; 3. Let the machine rest for 5-10 minutes after every 3-5 minutes of operation. Before putting material into the bowl, new machine need to operate without adding anything for a while, so that the motor can preheat. At the first minutes of grinding, it may have some carbon brush smell, it is normal. The grinding material should be as dry as possible and make the material into small pieces in order that the blade not be stuck. Moist and oily things should not be grinded. If you want to grind peanuts, you must put a little of them into the bowl once for short time and continue to grind them again in order to prevent the blade stuck. It is recommended that the harder things be put in less quantity, the smashing effect will be better. If you have any questions about the product. We will provide you with a good solution and try our best to solve the problem.