A few weeks back a mate dropped off a doohickey box which he had spare which had a float switch and a power supply attached which was intended to work as a controller for auto-top off filling.
I finally got some time yesterday to really work on it and make it suitable for my system. Basically the unit was originally designed to run off 2 powerpoints, 1 for a plugpack which was for a low voltage trigger for a floatswitch/relay combo and the other was a 240v switched supply controlled by the relay. This in turn was to allow a 24v retic solenoid plugpack, to be plugged into a 240v outlet. [smilie=nerd.gif]
While I have a bunch of powerpoints spare, the design was very functional, but a little inelegant in that it required so much interaction and 240V units.
Long story cut short. The relay and its plugpack were 24vDC, my solenoid was DC compatible so I decided to rework the internals a little on the low voltage side an the plugpack 24v side was rewired to allow it to power both the float/relay circuit and the solenoid. In theory the setup could work without the relay, but this particular relay had a much better current rating than the float switch so why put huge current thru the float switch when it just wasn't necessary. No 240V circuits were harmed in the making of this unit [smilie=whew.gif]
I attached a powerpoint timer to the powerpoint, plugged this unit into that and now the system works for 2.5hrs at a time every 60hours, this is enough to fill up my reservoir to just short of the top, but the float will kill it when the water level is high enough regardless.
While I was meditating on the changes for the switch box it occurred to me that the effluent run from the RO unit was going to need to be re-routed as I hadn't really done more than stuff it in under the tank on the shelf when I put it in. :book: I also wanted to adjust a few things including the drain for the skimmer cup. Again cutting the waffle to a minimum, I now run all of the RO effluent into 1 of the spare holes in my skimmer cup lid, this fills the skimmer cup with water until it gets to 1/2 full and by carefully setting the bend in the drain hose I now have it so it will drain like a surge bucket after it fills to this point and syphon will drain the cup completely. what this translates to is a skimmer cup rinse every 2.5 days with no effort at all from me. [smilie=devil.gif]
Pics of the setup when I finish tidying it all up, there is going to be a drastic rerun of all of the 240V cabling in the next week so I will wait till it's all pretty.
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