To follow is a list of Do's and Don'ts from ISE. Hope it helps. Marty
Disposer Do's and Dont's
The In-Sink-Erator Food Waste Disposer is one of America's most reliable appliances. However, here are a few simple hints that will keep it working smoothly for many, many years.
Grind food waste with a moderate flow of cold water.
Grind hard materials such as bones, fruit pits, etc. A scouring action is created by the particles inside the grind chamber.
Grind peelings from citrus fruits to freshen up drain smells.
Dispose of coffee grounds in your disposer whether or not you are on metropolitan sewer or septic tank.
Flush disposer for cleaning. Allow disposer and cold water to run after grinding or after draining sink of dish water. Some detergents are caustic; flushing will pass such material into the drain line without disposer damage.
Use a disposer cleaner, degreaser, or deodorizer as necessary.
Use hot water when grinding food waste. It is OK to drain hot water into the disposer between grinding periods.
Turn off motor or water until grinding is completed.
Be alarmed if a brown discoloration appears on the face of the grinding disc. This is normal. It is surface discoloration only and will not affect the life or performance of the disposer.
Grind extremely fibrous material like corn husks, artichokes, etc. to avoid possible drain blockage.