How to Install an In Sink Erator

InSinkErator garbage disposals have a 79-year service history and are the world's best-selling brand of under-sink food waste disposers. All models feature heavy-duty .5 to 1.0 horsepower induction motors with large stainless-steel or galvanized grind chambers and components. The mounting hardware and connection procedures are standardized across the product line, so, if you're replacing an old unit with a new one, you can use the existing hardware.

Difficulty: Moderately Easy

Instructions

Things You'll Need:

• Pipe wrench
• Channel-lock pliers
• Bucket
• Plumber's putty or caulk
• Screwdriver
• InSinkErator Jam-Buster wrench

1. Disconnect the power to the junction box or outlet receptacle that will provide the garbage disposal's power by flipping the circuit breaker off or removing the fuse.

2. 
    
   P-Trap

   Use a pipe wrench or Channel Lock pliers to loosen the connections on the P-trap from the sink drain pipe and horizontal pipe. Allow the water from the trap to drain into the bucket. Finish loosening the nuts and remove the P-trap.

3. Unscrew the large nut that holds the drain flange to the sink and remove the flange. Clean any old plumber's putty or caulk from around the drain hole.

4. Lay a 1/4-inch bead of caulk or plumber's putty around the drain hole and install the InSinkErator flange from the top of the sink. Place the InSinkErator fiber gasket, backup ring, mounting ring and snap ring onto the bottom of the flange. Tighten the three mounting screws to secure the flange to the sink.

5. Remove the bottom panel from the garbage disposal with a screwdriver to access the wiring. Twist the white wire from the power cord and the white wire from the disposal together using the wire nuts provided with the installation kit. Repeat the procedure with the black wires and the ground wires (bare copper).

6. Line up the mounting points on the disposer with those on the flange assembly and turn the disposer until the mounts are locked into place. Connect the discharge tube provided with the mounting kit to the disposer outlet with the two screws. Attach the P-trap to the discharge tube and tighten the connectors.

7. 
    
   InSinkErator Jam-Buster Wrench

   Tighten the mounting bolts at the flange attachment with the Jam-Buster wrench provided with the installation kit. Restore power to the circuit box or outlet. Turn on the water faucet and the garbage disposal unit and check that the unit operates properly.

Resources

• InSinkErator Garbage Disposals