No matter the quality of a garbage disposal, it may at a certain time break down. Unlike installing a new garbage disposal system, replacing an existing one is somehow easier. This is because the electrical system and drain pipes are in place. All you require are some tools and materials to get started. Some of the tools needed include: a hammer, slip-joint pliers, and flat-head screwdriver. Below is a step-by-step guide on how to replace your existing garbage disposal.
Step one: Gear up for the project
Before you begin replacing the old garbage disposal, you should ensure that you have all the necessary parts named on the instructions sheet. Switch off the power to the unit at the circuit-breaker box. For safety reasons, view the amperage of the circuit to be certain the disposal won’t overload it. Usually, the amperage is shown on the breaker circuit.
Step two: Get rid of the drain arm and tube
On your current disposal unit, disconnect the drain arm from the disposal unit. Apply pliers to loosen the spring clamp holding the dishwasher drain tube in position. Then get rid of the dishwasher drain tube from the disposal garbage.
Step three: Remove the disposal unit
Get rid of the unit by twisting it off the mounting nut. Dispose off any remaining water and debris if present. Turn the unit upside down and get rid of the plate covering the electrical connections. Take out the grounding screw and wire nuts and pull the cable out of the disposal garbage. In addition, you may be required to loosen a strain relief sleeve. Take out the present mounting assembly and drain. Then, unscrew the mounting ring and push the drain flange up rough the drain hole. Remove any plumber’s putty from the sink.
Step four: Setup new hardware
Put a rubber seal on the underside of the drain flange. In case your new disposal doesn’t have a rubber seal, you will be required a plumber’s putty. Then, push the drain flange into position in the drain hole. Put a second rubber seal on the drain flange on the underside of the sink. Connect the metal backup ring, flat side up. You can use a manual as well.
Step five: Connect the mounting ring
Connect the mounting ring loosely with three screws. Push the mounting ring up, and secure it up with a snap ring. Then, tighten the mounting screws until the assembly is tight and even.
Step six: Prepare the new disposal
For those with a unit that is needed to be linked to the dishwasher drain, apply the hammer and screwdriver to get rid of the knock out plug. Turn the disposal upside down, and shake it to get rid anything that might remain in the unit. Take out the electrical plate, and gently pull the electrical wires away from the disposal garbage. Then, screw the strain relief sleeve into position, and push the electrical cable through the sleeve into the unit. Strongly tighten the sleeve.
Step Seven: Finish the setup
Link the electrical wires, matching black to black and white to white. Then, secure the connections using wire nuts. Link the ground wire to green screw on the disposal and change the cover plate. After that, hang the unit by twisting it into position on the mounting nut. Rotate the unit until you make sure it is well aligned and connect the drain arm and dishwasher drainpipe. Finally, run water through the unit for some few minutes to check for leaks.