It can grind all kinds of corns and grains into fine powder . The working time is depending on the material, please put the material to half of the cabin. The effect will be better. And you should let the material cover the blade at least.

20s for spice such as chili, pepper
20s-30s for bean, such as soybean, rice, corn
40s-60s for hard things, such as roots.
About the nuts, and other things with oil. It is better to grind 2-3 seconds, then stop. again, grind 2-3 seconds, then stop.

It is widely used in families, Shops, clinic, hospital, pharmacy and institute laboratories.

For tough grinding such as turmeric, masala or idli batter - use mixer grinders with wattage rating 750 Watts or more.
Please allow the motor to cool for some time between product uses. Most MGs come with overload protection which automatically turns off the motor in case of overheating.
Burning smell during first few usage is normal due to varnish coating on motor and will stop after few usage cycles.
If you feel the machine is a little hot. Please let it have a rest.