CleanMax CM-WAV Ground Ring Terminal F21

The CleanMax CM-WAV Ground Ring Terminal (part# F21) is a #10, 14-16 AWG ring terminal used on the CM-WAV wide-area vacuum to terminate the harness ground wire at its grounding screw.

Compatible Models for the Ground Ring Terminal

• CleanMax CM-WAV Wide Area Vacuum (wide-track commercial upright)

This is a genuine Tacony hardware item used on the CleanMax CM-WAV. The same size fastener may appear on other Tacony machines; call 763-535-0770 to confirm the exact part for your model.

What the Ground Ring Terminal does

This ring terminal crimps onto the end of the 14-16 AWG ground wire and slips over a #10 grounding screw, giving the ground conductor a secure, low-resistance connection to the machine’s metal. A sound ground termination is a safety-critical connection — it is what keeps exposed metal at earth potential if a fault occurs, so the terminal must make solid contact.

Signs the Ground Ring Terminal needs replacing

Replace the ground ring terminal if it is corroded, if the crimp is loose so the wire pulls out or the connection is high-resistance, or if the ring is cracked or overheated. A ground wire that has come off its screw or a terminal that no longer grips the conductor is a safety concern and should be re-terminated with the correct part.

Installation and fit

Strip the ground wire to length, crimp the new F21 terminal firmly onto the 14-16 AWG conductor, and secure it under the #10 ground screw on clean metal so it makes solid contact. Tug-test the crimp and confirm the ground screw is tight. Twin City Vacuum has sold and serviced CleanMax equipment since 1956, and every part is sourced directly from Tacony. Browse more CleanMax parts, or learn more at CleanMax.

Frequently Asked Questions

What does the Ground Ring Terminal do on the CleanMax CM-WAV?

It crimps onto the 14-16 AWG ground wire and connects it to a #10 grounding screw, giving the ground conductor a secure, low-resistance connection to the machine’s metal.

How do I know if my CM-WAV ground terminal needs replacing?

Replace it if it is corroded, the crimp is loose so the wire pulls out or the connection is high-resistance, or the ring is cracked or overheated. A ground wire off its screw is a safety concern.

What models is the Ground Ring Terminal (part# F21) compatible with?

The Ground Ring Terminal (part# F21) is listed for the CleanMax CM-WAV wide-area commercial upright. If you run a different CleanMax model and are unsure whether this part fits, call 763-535-0770 and we will confirm it against your machine.

How do I order the Ground Ring Terminal (part# F21) or get help?

You can add the Ground Ring Terminal (part# F21) directly to your cart on this page, or call us at 763-535-0770. Our staff at 5415 West Broadway, Crystal, MN 55428 has been servicing CleanMax equipment since 1956 and can confirm the right part for your CM-WAV.

Questions? Call us at 763-535-0770 or visit 5415 West Broadway, Crystal, MN 55428.