Replacing the Solid State relays on IVS Select-A_Vac

[Rudy]

I have a 20 year old Industrial Vac Systems "Select-A_Vac". It allows the customer to select either a 2 or 3 motor suction.

The unit still works fine. However, the contact blocks and Solid State relays are badly corroded. It's impossible to even turn the screws on the contacts. I'm going to replace the relays, and redo the contact blocks.

I assume that the relays use 24 AC, not DC?????

Does anyone know?

Next, I noticed that there's an electrical device connected across the 24V input contacts. I'd guess that it's some type of electrical snubber (Quencharc or RC device)?

Does anyone know what the electrical part is that goes across the input contacts?

 

[TMoliver]

please send photo's

 

[Greg Pack]

FWIW I replaced my fragramatics relay with a mercury relay probably ten years ago and it works fine.

 

[Rudy]

That's actually a good idea.

The device across the inputs HAS to be some kind of suppression device.

Those vac motors are electrically noisy. Switching from 2 to 3 motors would involve some "noise" during the startup....which could, in turn, cause the inputs to sense the noise instead of the control signal.

 

[Dan kamsickas]

I have a 20 year old Industrial Vac Systems "Select-A_Vac". It allows the customer to select either a 2 or 3 motor suction.

The unit still works fine. However, the contact blocks and Solid State relays are badly corroded. It's impossible to even turn the screws on the contacts. I'm going to replace the relays, and redo the contact blocks.

I assume that the relays use 24 AC, not DC?????

Does anyone know?

Next, I noticed that there's an electrical device connected across the 24V input contacts. I'd guess that it's some type of electrical snubber (Quencharc or RC device)?

Does anyone know what the electrical part is that goes across the input contacts?

Can you post a couple of pictures? We never had a vac called a "Select-A-Vac" that I can remember. The device you're describing sounds like a diode pack that was used a long time ago in an attempt to limit spikes. It never really worked as hoped, if I recall correctly.

If this is one of our old machines, I would be cautious at how much time and money you put into it. Many parts are long obsolete.

 

[Rudy]

I'll get some pictures ASAP.

The unit is dated 2003. It has "Mega-Vac IVS" decals on the tank. The decals (I think) are original.

The plexiglass has been replaced with a Fragramatics "Select-a-Vac" window.

The front door is One piece. The coin mech is a Sensotron.

The display is an IDX BT902....which still works fine.

Didn't IVS (perhaps) sell the rights to this Vac to Fragramatics in the early 2000's?

 

[Dan kamsickas]

I'll get some pictures ASAP.

The unit is dated 2003. It has "Mega-Vac IVS" decals on the tank. The decals (I think) are original.

The plexiglass has been replaced with a Fragramatics "Select-a-Vac" window.

The front door is One piece. The coin mech is a Sensotron.

The display is an IDX BT902....which still works fine.

Didn't IVS (perhaps) sell the rights to this Vac to Fragramatics in the early 2000's?

If the front door is one piece, it is not a unit we manufactured. Prior to 2004, Fragramatics manufactured those and private labeled them for us. You will want to reach out to them to see if they are still supporting them. I believe they are but it wouldn't be the first time I was wrong.