Advice on control panel

[armedcor]

Hi Guys,
I've just started work on my all grain system. Unfortunately I'm unable to run a 32a circuit where I live so that's out the door. I got a wiring plan from HBT which I'm going to follow the idea of. (obviously 120v swapped for 230v)

The only problem is I like using the small 12v solar pumps and the diagram is wired for full size pumps. Is there some kind of AC to DC transformer that I can wire in the control box to run these? I'm going to have the wiring done by someone qualified but I'd like to just have all the components on hand before I start.

Also how are people wiring they're Solar pumps? I'd like to be able to detach mine from it's power supply.

Thanks in advance guys.

[LordEoin]

post up the diagram and I'm sure someone will be able to help.
I'd probably go with using a some relays

[armedcor]

Jesus sorry that was the first thing I meant to do.

[Ozbrewer]

@armedcor - where are you based?

2 things I can see:

1. If your elements are 240v elements and you run them on 120v you will only get 1000w out of them. What voltage are your elements rated for? Why are you only able to have 120v?

2. For safety you should put in a mechanical relay / contactor and an element on/off switch, which should "turn on" the relay which allows electricity to run to the ssr and the PID controls the firing of the SSR.

The reason is that if SSR fails, it USUALLY fails in the closed state - circuit closes the gate and allows electricity to run through - therefore element stays on and you can get boil overs etc. SSR's leak current and you don't want that happening when you are cleaning, so put a mechanical relay in place and an on/off element switch.

If you haven't haven't already, read carefully the electric brewery website as it has good diagrams and provides very good safety advice.

I have no experience with the brown pumps, so someone else may help you there.

[Ozbrewer]

Just re-reading the post and see you do have the 240v not the 120v as in the wiring diagram. So point one in my reply is not relevant. Point 2 is though.... 

[armedcor]

Thanks for that oz. I'll definitely add the relay and switch.  Going over all the electric brewery stuff the last few days it's definitely helpful!