Nema 8536 Square D Motor Starter

[Krusscher]

If you can see a time the disconnect would be shut off to the well pump motor adding a aux switch to the disconnect would prevent the contactors from coming on and allowing your chlorine pump to run with the well pump disconnect off. running your chlorine coil control through the running contact on the well pump contactor makes it so it cant run if the well pump were to over load or not come in for whatever reason.

 

[Drod04Mustang]

If you can see a time the disconnect would be shut off to the well pump motor adding a aux switch to the disconnect would prevent the contactors from coming on and allowing your chlorine pump to run with the well pump disconnect off. running your chlorine coil control through the running contact on the well pump contactor makes it so it cant run if the well pump were to over load or not come in for whatever reason.

The chlorine pump only should come on when when well is on. Never by itself. The well acts as a siphoner injecting chlorine little by litle in the 3000 gal tank.

 

[Krusscher]

The chlorine pump only should come on when when well is on. Never by itself. The well acts as a siphoner injecting chlorine little by litle in the 3000 gal tank.

Then you should probably have it go through and aux switch on the disconnect although there are probably very few times that disconnect would be off so its up to you. You could put a label on the disconnect saying power needs to be shut off to the motor cabinet instead and just lock the well pump disconnect in the on position.
It still needs to go through the running contacts on the well pump starter so it wont come on if the well pump contactor isn't in.

 

[Drod04Mustang]

Thanks for your help sir. Will implement this tommorow. I just found it weird that they ran 240V to the pressure switch. They only needed it to turn on the motor starter and then send a signal to the secondary motor starter for the chrlorine pump to turn on.

 

[Krusscher]

there is only 1 phase going to your pressure switch according to your drawing which should be right. It then returns and starts your well pump

 

[Drod04Mustang]

there is only 1 phase going to your pressure switch according to your drawing which should be right. It then returns and starts your well pump

Current setup White(3) to ground 120v and then blue(screw behind L1) to ground 214. Idk seems weird.

 

[Krusscher]

That is strange, might be something I am missing off your original drawing. If its fed with 240 delta that might make sense if L1 is your Wild Leg.

 

[Drod04Mustang]

That is strange, might be something I am missing off your original drawing. If its fed with 240 delta that might make sense if L1 is your Wild Leg.

its actually on (L2 blue wire screw behind ) .You are correct.

 

[Drod04Mustang]

View attachment 2568440

I have tried it the way above. The chlorine pump turns on without turning the on/off switch. Once you turn on the on/off switch once the well#2 turns on the chlorine pump shuts off. I am close I think but I dont want to burn anything up. Lol. Thanks guys.

 

[ptonsparky]

What is it that you are trying to accomplish?
I posted a very basic schematic that should work.
Tell me how it does not fit what you have & I will change it.

 

[Krusscher]

Sounds like the running contact on the well contactor probably has a NO and a NC. You want to run the coil for the chlorine pump through the NO side of the running contact.
You can do it the way it was before and just run it off the bottom of the well pump contactor but just know that is not how it would normally be because you would normally be using a lower voltage to control the coils.

 

[Krusscher]

Also you probably want to fuse down that coil circuit if it's not already.

 

[ptonsparky]

Sounds like the running contact on the well contactor probably has a NO and a NC. You want to run the coil for the chlorine pump through the NO side of the contactor.
You can do it the way it was before and just run it off the bottom of the well pump contactor but just know that is not how it would normally be because you would normally be using a lower voltage to control the coils.

That may be it.

 

[Krusscher]

That may be it.

but even the way I had it drawn out it shouldn't start the chlorine pump with the switch off. Sounds like he's a bit new to controls so I am trying to explain this as well as I know how to, just hard for me to do it through forum post lol.

 

[Krusscher]

1. from the L1 on the top of your well contactor go to a fuse block
2. from the bottom of the fuse block go to the switch contact
3. from the switch contact go to your pressure switch
4. from the pressure switch go to the common on the running contact of the well pump contactor
5. also under the common on the running contact go to the well pump coil
6. from the Normally Open on the well pump running contact go to the coil of the chlorine pump

 

[Krusscher]

Also add the disconnect aux switch where it makes sense in there if you are using it.

 

[kwired]

If you can see a time the disconnect would be shut off to the well pump motor adding a aux switch to the disconnect would prevent the contactors from coming on and allowing your chlorine pump to run with the well pump disconnect off. running your chlorine coil control through the running contact on the well pump contactor makes it so it cant run if the well pump were to over load or not come in for whatever reason.

What I see in his drawings the control power to the chlorine pump comes from well pump main circuit so there would be no control power to chlorine pump if well disconnect is off.

Presuming things are connected as shown, maybe he needs to make sure the coil is good on the chlorine pump or that the overload contact is closed on the chlorine pump if he can't get that contactor to pull in? Might be better ways of doing it but should still function as drawn.

 

[kwired]

Thanks for your help sir. Will implement this tommorow. I just found it weird that they ran 240V to the pressure switch. They only needed it to turn on the motor starter and then send a signal to the secondary motor starter for the chrlorine pump to turn on.

They did not send 240 to the switch. They brought L1 to one side, ran the return through the on/off switch and then went to the coil of the contactor. When on/off switch is closed but pressure switch is open you will read 240 across the pressure switch though because the L2 is feeding back through the contactor coil and there is no voltage drop across the coil if there is no current flowing through it.

 

[Krusscher]

What I see in his drawings the control power to the chlorine pump comes from well pump main circuit so there would be no control power to chlorine pump if well disconnect is off.

Presuming things are connected as shown, maybe he needs to make sure the coil is good on the chlorine pump or that the overload contact is closed on the chlorine pump if he can't get that contactor to pull in? Might be better ways of doing it but should still function as drawn.

In the original drawing the disconnect for the well pump is in between the starter and the motor not before the starter. So even witht eh disconnect off there would be power to the starters.
The chlorine pump sounds like it is pulling in just not at the right time.

 

[ptonsparky]

1. from the L1 on the top of your well contactor go to a fuse block
2. from the bottom of the fuse block go to the switch contact
3. from the switch contact go to your pressure switch
4. from the pressure switch go to the common on the running contact of the well pump contactor
5. also under the common on the running contact go to the well pump coil
6. from the Normally Open on the well pump running contact go to the coil of the chlorine pump

This is one of many ways. You have more things to consider other than to just make it run. Study 430.

ETA: My lack of bifocals. That should be a N/O and N/C contacts at 4.