auto vac shut off/start with 220 v

[tcross]

i want to hook my vacuum pump up to a temp controller to shut off and start the thing. it's a bb4 pump that runs off of 220v. is there a temp controller that is used with 220v. i've ready other threads about temp controllers but can't seem to find one that is hooked up to such high voltage. i'm sure it's been done... but i have zero clue what i need for parts/pieces. does anyone have experience with what i'm trying to accomplish that could offer up some advice? my main priority is the shut off (sick of waking up at 1 a.m to shut it off) but a auto turn on would be a added benefit if it worked out.

Thanks!

[toothfairy050]

Purchase a contactor that will operate on 110 volt that would be controlled by your temperature controller but the contactor would be able to handle 220 volts to operated the pump. Look at Grainger or an electrical supply house,

[maple flats]

You can switch only one lead, that will turn the pump on and off. A 220 (most are 240 now days) are really 2 lines at 120V each. Being they are attached to opposite poles at the panel box, they play back and forth at 60x a second. As the current flows away from the panel in one line, it is flowing towards the panel in the other. Switch either one and it will turn on and off. Just remember to shut the power off at the breaker box before working on it, because that second leg will be hot.

[steam maker]

My electrician , for my 5 hp sihi, put in a contact switch. When the 120 volt is apllied it lets the switch contact allowing the 240 to fire up. My 120 leg of the contact switch is run thru a wifi plug so i can turn it on and off from my phone , but if u used a temp controller instead of wifi plug it would do same idea. I think

[FL Maple]

I use 4 Johnson A419 controllers for my vacuum pumps and sugarhouse applications. They can control 240 volts, so you don’t need a contactor. They are expensive but great quality and easy to program. Here is a link to the data sheet. At the bottom of page 3 on the right, it shows how to wire for 240 volts. They have a probe on a cable so you can stick it outside your building.
https://cgproducts.johnsoncontrols.com/MET_PDF/2476641539.PDF

[arcticmaple8]

Use a johnson or ranco control. These are only rated for 8 or 10 amps so depending on your motor you may need to fire a contactor with temp controller for more amperage capability.

[Shaun]

I think you are looking for something like this if you want to try to build one (cheaper option). The coil voltage is what closes the contactor and is separate from the line and load terminals. Eaton is a decent name but I built a starter a while back with a 10 dollar unit and it worked fine, bunch of options to choose from.

https://www.amazon.com/Eaton-Cutler-C25BNB230A-Contactor-Voltage/dp/B00WN4UCIG/ref=sr_1_6?crid=MRX4LV34G0IM&dchild=1&keywords=double+pole+contactor+120v+coil&qid=1612133635&sprefix=double+pole+contactor+120v+coil%2Caps%2C20 4&sr=8-6

[tcross]

Thanks everyone. sounds like this will be a little easier than i was thinking... should be able to pull this off!

thanks again!

[DrTimPerkins]

If you just want simple, most of the maple equipment manufacturers sell an auto start-stop device that can be operated by temperature or manually. Decidedly more costly than DIY, but typically much simpler install.