If your garbage disposal is not running, first check to see if it is plugged in and receiving power. If so then check to see whether it will turn freely with your service wrench. Most disposers are sent with a self service wrench. The wrench is silver and should be located on or near your garbage disposal. (Check under your sink!) If it will not turn freely using the wrench, the disposal is most likely jammed. Check to see if the reset button has popped out.
What's up with that scary loud noise when you turn it on? There are some reviews that make this sound like it is eating a spoon (a LOUD, disturbing, and/or startling snap or click noise, etc.). I have to say that was one of my biggest reservations when I ordered this thing, having read the reviews. A fairly large slice of reviewers commented negatively on it. Here's my take... The motor is 3/4 HP compared to my little dinky 1/3 HP motor on my old one. That is a lot more horsepower and, consequently, a lot more torque. The little "teeth" that do the waste grinding that sit in the base of the chamber spin freely. When you turn it on, the little grinders snap into place like how your head gets whipped back on one of those crazy spinning carnival rides. It's just from centrifugal force setting the blades into place. The fine print in the directions tell you that it is part of the anti-jam mechanism. It's not startling or even disconcerting to me or my wife. We didn't blink an eye. I couldn't scare my children by turning it on. It just makes a bit of a click when you turn it on. No biggie. Full disclosure here - ours is mounted to the bottom of a heavy, porcelain coated cast iron sink. Our sink may be better at handling the torque and may dampen the sound and vibration more than a thin stainless steel sink. Our sink weighs probably 75 pounds. A stainless steel sink weighs 7 pounds. A heavier sink can probably handle a garbage disposal operating under full load better than a flexible, lightweight sink. That's not why we got the sink but I think it's probably a benefit to damping sounds and vibrations.
The size of the motor in the garbage disposal directly correlates to the units grinding ability. Garbage disposals typically have between 1/3-1 horsepower motors. Choose the correct horsepower based on the waste that you need to remove. 1/3 horsepower units will help tackle tasks like grinding vegetables easily, but more power is recommended if disposing a large quantity of food waste such as, vegetables and harder to grind meats.

Abt carries both types of garbage disposal systems, continuous and batch feed. Continuous feed disposers are turned on and off with a power switch. They usually have a shield surrounding the hole in the sink so things do not come back out while being ground for disposal. Some continuous feed disposals have a reverse setting to help reduce jamming. Batch feed disposals operate when a lid is engaged, making them safer. They are a good option for families with children because food is unable to fly out of the sink. Batch feed food waste disposals are usually more expensive than the continuous feed disposals.

Garbage Disposal Installation

Flip the disposer over and unscrew the electrical cover plate on the bottom of the disposer by removing the cover plate screw. Again, be sure the power to the unit has been turned off at the electrical supply panel. Then disconnect the electrical cable connector. Pull out the wires and remove the wire nuts. Also unscrew the ground wire from the green ground screw. Be sure to save the electrical cable connector so you can use it again.
Energy usage is not high; typically 500–1,500 W of power is used, comparable to an electric iron, but only for a very short time, totaling approximately 3–4 kWh of electricity per household per year.[34] Daily water usage varies, but is typically 1 US gallon (3.8 l) of water per person per day,[35] comparable to an additional toilet flush.[36] One survey of these food processing units found a slight increase in household water use.[37]
No need to worry if your garbage disposal is on the fritz—installing a new one is a straightforward project that you can do yourself in just a few minutes. Start by switching off the power to the disposal at your home’s breaker box to ensure that you can work safely. Next, remove the old unit by detaching it from the mounting ring directly beneath the sink drain. Finally, install any necessary new mounting hardware, fit the new disposal into place, and turn on the water to test for leaks before giving it a trial run.
If your garbage disposal is making a clicking or rattling sound, there may be some food particles that will not grind up inside. Remove power from disposer, reach into the sink hole with a pair of tongs and remove anything that is still down in the disposer. Test your disposer to be sure the noise is gone. If not continue troubleshooting your disposer issue (see below).

Garbage Disposal Replacement