Garbage disposals
The February 2017 services page listed disposals next to the laundry machines and did not name a disposal brand. The checks below fit the common under-sink units that have a reset button and a hex socket in the center of the bottom. If your shell has neither, say so in the email and send a photo of the sticker on the side.
It hums and does not grind
Turn the wall switch off. Unplug the unit if it has a cord. If it is hardwired, switch off the breaker and confirm the hum is gone. Do not put a hand in the sink opening. Pull bones, glass, and twist ties out with tongs. Then use a hex key, usually 1/4 inch, in the socket under the unit and work it back and forth until the turntable moves freely from above. Press the reset button on the bottom afterward. If the hex key will not move, the jam is still in the grind chamber.
No hum at all
The reset button clicks when it was tripped. Press it once. A disposal that then runs had overloaded on a jam. A disposal that trips again with an empty chamber is finished as a motor. No click, and still no hum with the switch on, leaves the switch or the wiring. Those need a meter on a live circuit, so they are not in the steps above.
Water at the sink
Water at the mounting ring, and only when the sink holds water, is the flange or the lock ring. Water from the side nipple while the dishwasher runs is the hose or its clamp. That hose should rise to the underside of the counter before it drops to the disposal, so the sink does not drain back into the dishwasher.
A dishwasher that never empties into the disposal often still has the factory knockout in the disposal's side inlet. With the power off, knock that plug inward and fish the plastic out of the grind chamber before you run the unit. A plug left inside becomes the next jam. Water from the body of the shell during a grind, not from the flange, is a cracked housing.
Send the side-sticker photo and which of the three headings matches to [email protected].