KitchenAid makes more than 25 models of mixers as of October 2011, ranging from designer stand mixers to heavy-duty commercial mixers. The features and functions vary from machine to machine, such as the size of the mixing bowl and the accompanying attachments. However, most of KitchenAid's mixers have a few components and uses that create heat and even can cause smoke. You can troubleshoot at least five general aspects of these mixers in an effort to stop this problem.
Unplug the mixer from the power outlet. Inspect the entire length of the mixer's power cord for damage, such as kinks or exposed wiring. Look at the plug and make sure the prongs are not bent out of shape or broken off. Call KitchenAid for service if any part of the power cord is damaged (see Resources).
Discontinue use of mixer attachments that were not created by KitchenAid for your specific model. Also, don't use attachments from a different brand of mixer. The incompatibility can cause the mechanical components inside the mixer to catch fire. Visit KitchenAid's "Attachments, Accessories and Parts" webpage to find attachments that match your model (See Resources).
Run the mixer as you normally would, even if you smell a pungent, smoky odor. This is a common occurrence with the motors in brand new electrical appliances. The odor will subside after normal, continued use, according to KitchenAid..
Plug the mixer's power cord directly into a three-pronged wall outlet instead of using an adapter or extension cord. Use of these accessories that are not made and approved by KitchenAid might result in a fire hazard.
Turn off the mixer if the top of the unit is hot to the touch during periods of heavy usage. This doesn't necessarily produce smoke, but the excess heat can be a nuisance. Allow the unit to cool down for a few minutes then proceed with using it again.