Will this controler work

[Mickymouse]

I was reading Kryptos thread and want to build one.http://www.icmag.com/ic/showthread.php?t=6341
But will this simpler one work.Heres what I want to do

1. controler would have one float switch top and bottom
2.Timer would have contacts for on/off or no/nc
3.Neutral wire for fill pump run through top float switch . set n/c (normanly closed)
4.neural wire for return pump run through bottom float switch set n/o(normanly open)

Timer comes on fill pump comes on until top float switch opens and shuts off pump.(will start and stop untill completely full)

Timer shuts off @ set time say 10 min.return pump comes on untill bottom float opens and shuts off pump.(will start as needed to empty).controler stays drained untill timer kicks on again.This one pretty much needs two floats and a timer for wiring
OK is there a flaw in my plan.

 

[Observer Tom]

I would suggest drawing the wiring, preferably on the computer so you can post it here. If there is a flaw it will be much easier to spot that way and you'll be able to match up any tricky parts like relays to make sure they will work together with the correct voltage.

 

[Mickymouse]

No relays Its pretty simple every thing 120v.Timer turns on fill pump.Top Float shuts it off.Timer shuts off which turns on drain pump.bottom float shuts it off.

 

[Mickymouse]

Ah no 120v float valves.Iknew there was something.

 

[Mickymouse]

OK I found the floats on Ebay $6.00. 250v ac 1.5 amp.. When I get the parts I will see how it goes.This can be done with no relays.I hope

 

[yamaha_1fan]

Will it work? probably, but not well. have you ever had a pump connected to a float switch? I have and it sucked. As the water barely raises the float, the pump comes on, then just for a second because the water dropped. But now it raises again 3 seconds later because it only dropped a hair.

Basically the pump will turn on and off very rapidly, sloshing water, making it worse, and just wreaking havoc. It may work but I do not think its wise to turn the pump on and off every 10-20 seconds.


The relay circuit with 2 floats creates hysterisis which is basically a buffer. A good example is a thermostat set for 70. It may actually work at 68-72. When the room hits 68, it shuts off, then when it hits 72, it turns on. Otherwise it would turn on and off much more frequently.

Its well worth the extra 35 bucks for 2 more floats, and relays