Skip to main content

Install and Secure Drain Assembly — Mount the Air Switch Button

Beginner

Part of project

How to Install an In-Sink Air Switch for a Garbage Disposal · Step 3 of 6

Helpful?

In this video

Carefully place the drain assembly with the fresh putty into the sink drain opening from the top. Press down firmly to seat it. From underneath the sink, slide the rubber gasket up against the sink bottom, followed by the cardboard friction ring. Finally, thread the large locknut onto the drain assembly and tighten it by hand. To fully secure it, use a screwdriver and hammer to gently tap the locknut clockwise until it is snug. This will squeeze the plumber's putty out around the top, creating a tight seal.

Goal: Secure the new drain assembly in the sink

  • Have someone hold the drain in place from the top while you tighten the locknut from below to prevent it from spinning.

Used in this video

  • Flathead Screwdriver (Screwdriver_Type: Flathead)Tapping the locknut to tighten it.
  • Hammer (Tool Functionality: Applying)Tapping the screwdriver to tighten the locknut.
153.5K views5685 minutes
AdamDIY

236K subscribers

View Channel

FAQs

Do I really need a specific 1-5/16 inch hole saw for the air switch button, or can I use a different size drill bit?

Using the recommended 1-5/16 inch hole saw is crucial for a clean, precise cut and a snug fit for the air switch button. An incorrect size could lead to a loose fit, potential water ingress, or difficulty in securing the button properly. While other methods might exist, the hole saw provides the best result for durability and safety.

What are the most important safety precautions I need to take before starting this installation, especially since it involves electrical components near water?

Always turn off the power to your garbage disposal circuit at the breaker before beginning any work, and confirm it's off with a non-contact voltage tester. Ensure your work area under the sink is completely dry, and after installation, thoroughly check for any leaks around the new switch and existing plumbing connections before restoring power.

My air switch button is installed, but the garbage disposal isn't turning on when I press it. What should I check first?

First, verify that the power control module is plugged into a functioning outlet and the garbage disposal is securely plugged into the module. Next, check that the air tube is firmly connected to both the air switch button under the sink and the power control module. A kinked or disconnected air tube is a common issue.

Is there an alternative to drilling a hole in my sink deck if I'm hesitant to do so?

Yes, if you have an existing unused pre-drilled hole in your sink deck (like for a soap dispenser or old sprayer), you can often use that. Alternatively, some air switch kits offer options for mounting directly into the countertop instead of the sink, or you can purchase a separate countertop-mounted button that doesn't require drilling into the sink.

Transcript
Hide

I'm going to have to probably clean it up. So that will go in there just like that. Okay, so I haven't tightened it down yet. But as you can see, I've screwed it on. There's the cardboard right there. Up there is the rubber seal. So now I'm going to tighten this. I'm going to get a screwdriver hammer and tap a flathead screwdriver and tap it right there just to tighten it. And then I'm just going to reassemble this like that. And then once this is tightened down, the plumber putty will ooze out the side and I'll clean that up here. And then we'll check it and see if we got a good seal. So I'll show you the next step in a minute.

Auto-generated transcript. May contain errors.