Electric Home Brewery, Electrical Assistance Request

MAGICMAGIC Doot DootFurniture City, Michigan
edited July 2013 in Food & Drink
I am not an electrical engineer or a certified electrician so I'm looking for some input. I have a good knowledge of AC and DC but aside from doing general home wiring repairs and PC wiring I don't have a lot of experience.

The project I am working on now is an electric home brewery. This isn't a new concept, and there are a lot of people that have built very similar setups. I didn't want to fallow a guide/plan and not really know what I was doing, so I did a lot of reading on electrical circuits and components to determine what I need based on what I'm trying to do. Here's a description of what I'm trying to do.


- 62qt stainless steel kettle heated by a 5500w heating element.

- The heating element will be controlled by a Solid State Relay and PID controller .

- 1/20hp pump for recirculating liquid in the kettle and draining.

- LED indicator push button switches for Main Power, Heating Element, and Pump

- Pump is also on on a Rheostat to control flow.

In summary, the element should be drawing 23A (5500w/240v), pump (37.29/115v) image

Primary Goal: don't die. Secondary, build this as safely and efficiently as possible. This is the diagram I came up with.

I'm looking for some feedback, suggestions, improvements, confirmation that I did this correctly or not. Thanks!
mertesnPirateNinjaGHoosdum
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Comments

  • mertesnmertesn I am Bobby Miller Yukon, OK
    Pics once you've started building plz
  • primesuspectprimesuspect Beepin n' Boopin Detroit, MI
    Paging @J
  • MAGICMAGIC Doot Doot Furniture City, Michigan
    edited February 2013
    Pics once you've started building plz
    Yeah, once I get some feedback I'll hopefully be ordering the control box components by Friday.

    And, my primary question is should I go with a 40A contactor relay for the Main Power switch? I wasn't sure if the 27A total was too close to the 30A max on that main contactor.
  • Its going to be pretty easy to get start up spikes in current draw in your pump, would go with 40A in my opinion.
    MAGICmidga
  • shwaipshwaip bluffin' with my muffin
    Get a good multimeter and check continuities before hooking up any power. Then check voltages before hooking up anything expensive.

    I don't have any AC power experience to add, but it looks reasonable to me. Also make sure you get AC relays.
    RyanFodder
  • MAGICMAGIC Doot Doot Furniture City, Michigan
    Okay, I am going to upgrade both of the relays to 40a (only a couple more dollars) and order the parts.
  • shwaipshwaip bluffin' with my muffin
    make sure you ground the case
    primesuspect
  • NiGHTSNiGHTS San Diego
    This is really badass
    primesuspect
  • MAGICMAGIC Doot Doot Furniture City, Michigan
    make sure you ground the case
    Yes sir, the main case and the top panel are both grounded.
    shwaipprimesuspect
  • midgamidga "There's so much hot dog in Rome" ~digi (> ^.(> O_o)>
    What sort of thermal probe are you using?
  • MAGICMAGIC Doot Doot Furniture City, Michigan
    image

    A stainless steel threaded probe, like this.
  • midgamidga "There's so much hot dog in Rome" ~digi (> ^.(> O_o)>
    Thermistor?
  • MAGICMAGIC Doot Doot Furniture City, Michigan
    Yes, it is.
  • This is amazing. Please continue.
  • MAGICMAGIC Doot Doot Furniture City, Michigan
    I was talking with some dudes on Reddit, and concluded that the pump will probably burn out the resistor. So, I am just going to use a ball valve to control the flow from the pump.
    midga
  • midgamidga "There's so much hot dog in Rome" ~digi (> ^.(> O_o)>
    I would recommend a needle valve for better control. If you're worried about being able to open it quickly for pump safety, build in a ball-valve bypass.
  • MAGICMAGIC Doot Doot Furniture City, Michigan
    edited February 2013
    I would recommend a needle valve for better control. If you're worried about being able to open it quickly for pump safety, build in a ball-valve bypass.
    True, but stainless steel needle valves are expensive as all hell. I don't need precise flow control, just half or full on. I think a ball valve should work.
  • Good thing you went with the larger amp relays... Going to be stressing your pump more that way.
  • MAGICMAGIC Doot Doot Furniture City, Michigan
    edited February 2013
    Good thing you went with the larger amp relays... Going to be stressing your pump more that way.
    Yeah, its only a 0.26 amp pump. How much do you think the amperage could swing under start-up/stress?
  • midgamidga "There's so much hot dog in Rome" ~digi (> ^.(> O_o)>
    I would recommend a needle valve for better control. If you're worried about being able to open it quickly for pump safety, build in a ball-valve bypass.
    True, but stainless steel needle valves are expensive as all hell. I don't need precise flow control, just half or full on. I think a ball valve should work.
    Oh, alrighty then :)
  • midgamidga "There's so much hot dog in Rome" ~digi (> ^.(> O_o)>
    Hey, nice M-Audios.

    Also, this is really freaking sweet. Once this has proven itself, I think I just might have to build a one.
  • MAGICMAGIC Doot Doot Furniture City, Michigan
    Hey, nice M-Audios.

    Also, this is really freaking sweet. Once this has proven itself, I think I just might have to build a one.
    Thanks. When I'm all done I'll post of video of using it for the first time. Or, you will know to look at my iPhone for my last minutes.
    midga
  • TushonTushon I'm scared, Coach Alexandria, VA
    Hey, nice M-Audios.

    Also, this is really freaking sweet. Once this has proven itself, I think I just might have to build a one.
    Thanks. When I'm all done I'll post of video of using it for the first time. Or, you will know to look at my iPhone for my last minutes.
    I read that as "look for my iPhone" as in, lost in the first brew. iBeer, with only a hint of glass and plastic.
  • mertesnmertesn I am Bobby Miller Yukon, OK
    Hey, nice M-Audios.

    Also, this is really freaking sweet. Once this has proven itself, I think I just might have to build a one.
    Thanks. When I'm all done I'll post of video of using it for the first time. Or, you will know to look at my iPhone for my last minutes.
    I read that as "look for my iPhone" as in, lost in the first brew. iBeer, with only a hint of glass and plastic.
    More along the lines of a "found footage" horror movie.
  • RyanMMRyanMM Ferndale, MI
    This thread gives me a beerboner.
  • drasnordrasnor Starship Operator Hawthorne, CA
    I think I would've gone with a variac instead of a rheostat for the pump throttle. If it's based on a universal motor then you could also use a triac or SCR-based dimmer circuit.
    midga
  • Good thing you went with the larger amp relays... Going to be stressing your pump more that way.
    Yeah, its only a 0.26 amp pump. How much do you think the amperage could swing under start-up/stress?
    Maybe 2-3x that.
    midga
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