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Help me be less of an idiot regarding soda fountain carbonators

1.8K views 7 replies 5 participants last post by  arcadefreaque  
#1 ·
I recently got myself into my first soda fountain, and although the fella assured me that everything was there except for some hose, I’m not sure if I’m missing a part, or just not understanding how it is supposed to be configured. I’m hoping for a little direction if possible.
Basic elements are:
  • Lancer 4 head tower
  • 4 FlowJet CO2 powered syrup pumps
  • Chiller plate
  • 2 CO2 regulators (with a T to split output from #2 and feet into #2 to presumably down the pressure for the pumps)
  • McCann 2.0 Econo Boost (carbonator?) Model: 16-3172-3/8

What I’m struggling with is the carbonator aspect. This McCann thing has an Aquajet pump with an input and output (presumably for the water to come in and pushed into the tank). And then it as a 2 gallon tank with only ONE single input/output (actually it has a small port on the back that is like a metal valve stem, which I believe is used to set the initial 40lbs of internal pressure with air). The single entry/exit point into the tank has a 3-way head on it so that the pressurized water from the pump goes into one of the 3 spots, another spot is consumed by a pressure release mechanism, and then the 3rd is just a barbed end for a hose – which leaves me scratching my head, because I would have thought I’d have an input somewhere for CO2 and an output for the carbonated water.

Since the water HAS to be able to come out again, I’ve got to assume the 3rd spot is the water output. Which means we aren’t getting any CO2 in the tank to carbonate. So, I question – Am I missing another piece of the puzzle that mixes the co2 and water after the water comes out of this ‘booster’? Or is there some sort of sciencey/voodoo that says I should be using one of these Y shaped or T-shaped hose connectors (that were in the box along with a bunch of other spare parts) to have the water and the co2 merge inline somewhere, with the fact that the co2 is running at 100psi being the factor that prevents all heck from breaking lose and water backing up and ruining my day? Or something else stupid that I’m missing?
 
You need someone there that knows what they're doing.

Use the wrong material and people get sick! Very sick.
I appreciate the suggestion/warning about interactions between the various materials and chemicals involved. I do understand that there are serious ramifications if one were to use brass fittings anywhere past the point of carbonation. All of the fittings are stainless, and all hose is food safe, transparent/braided, and hi-pressure.

I am hoping to understand what I have here, if I'm missing parts, or how the process should work, for a few reasons:
  • Curiosity of how this is supposed to work keeps me up at night
  • So far, manuals, videos, instructions and such haven't helped me understand the process for this configuration, as I've yet to come across an installation that uses a carbonator with less than 1 water input, 1 water output, and 1 co2 input, except for a couple that simply gloss over the details of how carbonation is happening in the 1 input/1 output configuration.
  • Since I live in the boonies, I'd rather not have to bring a pro immediately and pay him to drive 2 hours round trip + the minimum service fee to tell me that I'm missing a $ part, and that I'll need to order it and have him come back another time. If it comes down to that, I'm probably stuck tossing the thing in the shed out back and forgetting about it, as I don't like soda THAT much.
  • The only person that I could get on the phone so far that seemed interested in helping, was not interested in helping me figure out these details ahead of his initial visit (hence the chance of multiple visits just for a soda).

I've attached a pic of what the "carbonator" that I currently have looks like, incase that helps set me straight.
 

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Discussion starter · #8 ·
I Do you happen to do a 'Vanilla Egg Cream' drink?
No, not Martha Stewart over here.

I googled 'how to carbonize water for a soda fountain' and got a few explanations on how the CO2 tank does its 'pressurization' thing to the water.
I have also done a bit of research on carbonizing water. This particular device, that I'm told was used as the carbonator (model description suggests its only a 'water booster', but it also has the word 'carbonator' stamped on the name plate). From what I understand about carbonizing water with CO2, there is something missing with this setup to allow carbonization and distribution, hence the reason that I was wanting to learn a bit more about how this works and what might be missing before bringing anybody in to work on it and end up discovering I'm missing some major/expensive parts.

As luck would have it, I picked up a McCann Big Mac Fast Flow carbonator, so as long as it ends up working well, the need for an understanding of my initial question will be no more.
 
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