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Anonymous Poster

Ice Cube Relay

02/04/2011 8:38 PM

How do I wire an ice cube relay to make a pump and 1/8hp motor turn on and off with two floats in a poly tank.( Reverse Osmosis system)I have the basics of the current travel into the rely but lost in wiring all other items.

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#1

Re: ice cube relay

02/04/2011 8:58 PM

I recommend that you use copper wire. Silver does have a lower resistivity than copper at room temperature but the cost/benefit does not warrant the expense. Now how this wire should be connected is in a Set-Reset relay wiring configuration. You'll find the circuit about halfway down the page after the logic symbol equivalent.

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#2

Re: ice cube relay

02/04/2011 9:05 PM

L1
|
•---(upper float)---•
|.........................|
•---3 R|| 1--------•---(lower float)---7 (R) 2---L2
|.................................................................|
•---6 R|| 8----------------------------(M)-----•

P1----M||----------------------------(pump)---P2

(The dots are just spacers to make the vertical wires line up. R = ice-cube relay; M = motor control relay with contacts sufficient to handle the load. L1/L2 = control power. P1/P2 = motor power, assumed single-phase for 1/8hp pump. The numbers are a standard pin-out for 8-pin octal relays.)

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#3

Re: Ice Cube Relay

02/05/2011 11:19 PM
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#4

Re: Ice Cube Relay

02/06/2011 11:08 AM

Hopefully, whoever is working on this project has the proper ability to work with ?120? 220? voltage. An anonymous post in a forum does not seem the best place for answers. Especially when working around electricity and water. If in doubt, call an electrician or electrical design company.

A few years ago, I was asked to help a person in a very similar situation. (The reason this post caught my eye) the float switches and relays were connected all wrong, 120VAC was inadvertently connected to a spigot that was used to draw water from the poly storage tank. (Ground path thru spigot handle.... Ouch!)

Needless to say, the person wiring this should have called someone who knew a little more about electricity sooner. Thankfully (as far as I know), no one got hurt before this hazard was corrected.

Good Luck, THINK! JB

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