[chbot] PLC/Pump

[Henri Shustak]

Nice write up!

Is it not possible to have a third pump for the tiny house header tank or is that shared by the cows (etc)?

H

> On 28/06/2018, at 9:30 AM, Marshland Engineering <marshland at marshland.co.nz> wrote:
> 
> This may be if interest to others especially if you are off grid, so here it
> is. 
> 
> We live on a block and have animals. The pump and pressure switch is not
> great, Every time a cow has a drink or we make a cup of tea, the pressure
> drops and the pump goes on. This uses quite a bit of electricity. 
> 
> We currently have a header tank in the house, (all plumbing is low pressure)
> and the pump is activated by a radio transmitter with a float switch with a
> big hysteresis loop. We have about a days water in the tank and electricity in
> the roof cavity.  
> 
> We have a second pump for the animals troughs. This comes on on a timer for 15
> min a day 3 times a day. This is the clever bit well at least I think so. This
> water line also goes to the garden sprinkler. Once the troughs are full and
> the pressure increases, the sprinkler comes on. I can see by the sprinkler
> that the cows troughs are full from my lounge sipping my tea,beer,gin or what
> ever takes my fancy.  
> 
> This was all fine to we took on a tiny house. They needed water. We got an old
> tank stand from the school down the road and a tank from a neighbour. This is
> where I need the new solution. The tank has enough water for 4-5 days however,
> once a day this tank and the cow troughs will be filled. I'm not particularly
> sure the sprinkler will provide enough pressure to fill the tank (4-5 M high)
> so the PLC with a pressure switch is the new solution. 
> 
> The reason for the long discussion is that system uses very little power. If
> you are on a block and want to be off grid, use header tanks.  Within the
> house, rooms that require water have their own feed from the tank so my shower
> does not change temperature when the washing machine comes on. 
> 
> Cheers Wallace
> 
> 
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