Install a Moen disposal
One of the jobs service and repair plumbers often find themselves doing on a call is replacing a worn out garbage disposer. It’s not generally a very tough job, taking maybe a half hour to accomplish when everything goes correctly.
To ensure everything goes correctly, follow along with us as we chronicle a step-by step installation of a Moen disposer, keeping in mind the basic techniques shown here will work for most any disposer, but make sure to check the installation manual for any important notes before beginning
First, assemble the tools you’re going to need to accomplish the installation. Nothing complicated or special is required: In this case we’re going to need an adjustable wrench, slip joint pliers, a dowel/punch, screwdrivers, tape measure, sealant, wire strippers, wire nuts, a cable connector and a set of wire cutters. Once you have your tools ready to go and you’ve read the safety instructions you’re ready to go.
The first step in any installation – except in new construction – will be to remove the old unit from the sink in question. We aren’t showing you how to do that because there are lots of different disposals with varying ways of removal. Basically, though, unplug the pigtail, disconnect all the fittings, unscrew or otherwise remove the sink flange and out she comes. We think you can figure it out. We join the installation with an empty spot in the sink and a new disposer on the floor unpacked and ready to go.
POTENTIAL DIFFICULTY SCALE:
1. The first step is to unpack your new disposer and make sure you have all the parts. Most instruction sheets will have an illustrated parts list like this one to help you with the inventory.
2. Using a flat-blade screwdriver, remove the mounting assembly from the new disposer. Then use the same tool to pry the snap ring from the mounting flange. The take off the mounting ring, backup flange and fiber gasket from the flange, making sure to note the position of the components in the stack.
3. Clean the area around the sink drain and put a ½-inch rope of plumber’s putty around the sink flange. Center the flange in the sink opening and press it into place. Putty will squeeze out. Don’t clean it up yet. Then reassemble the fiber gasket, backup flange, mounting ring and screws. From under the sink, place the fiber gasket, backup flange and mounting ring onto the sink flange in this order.
4. Then, holding all the parts up against the bottom of the sink, pull he snap ring open and carefully feed it into the groove in the sink flange until it snaps into place. Tighten the three screws lightly against the backup flange. Now move topside and remove the squeezed-out plumber’s putty from around the sink flange.
5. Now grab the disposer and install the pre-assembled discharge elbow, gasket and flange. You might be tempted, but do NOT re-use the old elbow and gasket. They’re trashed – use the new stuff. Next, if the disposer is installed with the dishwasher, use your dowel and a hammer to punch out the plug in the dishwasher inlet. Use a pair of pliers to get the plug out of there.
6. Now you’re ready to connect the disposer to the sink components, Make sure to check the lower mounting ring is in place and the cushioning mount is engaged around the top lip. Then align the discharge area with the drain connection and hang the disposal by aligning the three mounting tabs on the lower mounting ring with the slide-up ramps on the mounting ring. Use your slip-joint pliers to turn the lower mounting rings until all three lock over the ramps.
7. Connect the discharge elbow to the drain line, then make sure all plumbing connections are secure. If you’re installing the disposer with a dishwasher, then connect the dishwasher hose using a hose clamp.
8. Install your electrical pigtail and wire it into the disposer unit according to your manufacturer’s instructions. Plug it into a grounded receptacle, if available, and let your customer enjoy their new disposal.
9. Installation’s complete. Clean up your work area, write up the customer, accept payment and get on with your day.