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Brown water drained from tank of brand new HX machine

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  • Brown water drained from tank of brand new HX machine

    Long story short: I bought a brand new coffee machine in about two months ago. Always used filtered water. Noticed little specs of junk in the water from the hot water outlet pretty much from day 1. Junk is still there so I drained the tank. See photos for result. How concerned should I be?

    Click image for larger version  Name:	hx-tank-water-1.jpg Views:	0 Size:	226.4 ** ID:	844897
    Click image for larger version  Name:	hx-tank-water-2.jpg Views:	0 Size:	126.4 ** ID:	844898
    Last edited by snoopen; 9 October 2020, 10:42 PM.

  • #2
    Have you raised this issue with the retailer you bought the machine from?

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    • #3
      Waiting to hear back regarding the tank water. But they're otherwise aware of the junk that was coming from the hot water wand and wanted me to just pull more through the wand. I didn't like that so flushed the tank. Strange thing is the water from the hot water wand never really looked brown. Maybe because the hot water is pulled from the top of the tank.

      Either way... kinda grossed out that I've been using that water to pull shots.

      Comment


      • #4
        What do you mean you 'flushed the tank?' is the container of water from the group? if so, i would expect there to be a small amount of discoloration.

        It's important to understand the water from your hot water outlet is the same water that goes out your grouphead, they both come from the same place in the water tank, travel through the same heat exchanger, and never enter the boiler. It is the same water

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        • #5
          Can happen sometimes, but no biggie. Flush away until it's gone.

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          • #6
            That would be classified as good quality water in some places.

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            • #7
              Originally posted by kofekitt View Post
              What do you mean you 'flushed the tank?' is the container of water from the group? if so, i would expect there to be a small amount of discoloration.

              It's important to understand the water from your hot water outlet is the same water that goes out your grouphead, they both come from the same place in the water tank, travel through the same heat exchanger, and never enter the boiler. It is the same water
              In an HX machine brewing water never goes through the boiler while the hot water does. So in this situation it does matter whether the brown water came from the group head or the hot water wand.

              A single boiler machine draws both the brew water and hot water from the boiler, not an HX.


              Java "It pays to know ones equipment" phile
              Toys! I must have new toys!!!

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              • #8
                Originally posted by Javaphile View Post

                In an HX machine brewing water never goes through the boiler while the hot water does. So in this situation it does matter whether the brown water came from the group head or the hot water wand.

                A single boiler machine draws both the brew water and hot water from the boiler, not an HX.


                Java "It pays to know ones equipment" phile
                Unless it's a HX fed hot water like on Nuova simonelli's (and some wega's)

                Koffee "who knows his equipment" kitt

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                • #9
                  Always the rare exceptions and I should have added the usual caveat so let me correct that error: In an HX, with rare exceptions, machine brewing water never goes through the boiler while the hot water does.


                  Java "Snoopen's equipment hasn't been identified" phile
                  Toys! I must have new toys!!!

                  Comment


                  • #10
                    Yeah, I'm still not sure how the water is plumbed through the tank. It's a Nuova Simonelli Musica. I was told the group head brew water and hot water are both drawn from the same source.

                    There's a "heater" drain port on the side of the tank which is where I "flushed the tank".

                    So the water I drained is the boiler water for steaming and not the same as the brew water that goes through the heat exchanger?

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                    • #11
                      Originally posted by snoopen View Post
                      .

                      So the water I drained is the boiler water for steaming and not the same as the brew water that goes through the heat exchanger?
                      Correct, it's one of the downsides of a HX fed hot water machine, there is very little boiler water turnover

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                      • #12
                        Ok cool I can see why then the water could get so ugly looking.

                        So I have specks of junk in the water from the hot water wand. If I want to clean out, my only option without breaking open the brew water HX loop is to continually run water out of the wand through normal operation?
                        Last edited by snoopen; 10 October 2020, 04:56 PM. Reason: Edit to make my question more clear

                        Comment


                        • #13
                          You really shouldn't be getting specks nor should you be getting brown water. However, you should also be flushing out your boiler more often - every 1-2 days is when I do it because I don't like the idea of water sitting in the boiler tank being reboiled + possibly causing any chemical reactions with the copper (even though my water quality is excellent).

                          I would flush out your boiler a few times to give it a bit of a clean first, then go from there.

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                          • #14


                            Thanks kofekitt, javaphile and others for your inputs so far. I'll be continuing my discussion with the retailer as well. But it's good to get a sense check since I have no prior experience with a HX machine.

                            Originally posted by Jayce View Post
                            You really shouldn't be getting specks nor should you be getting brown water. However, you should also be flushing out your boiler more often - every 1-2 days is when I do it.
                            Yeah... zero particles would be ideal and was my expectation. As for flushing out my tank, it doesn't sound like I have that option.

                            Originally posted by kofekitt View Post
                            Correct, it's one of the downsides of a HX fed hot water machine, there is very little boiler water turnover.
                            If I understand kofekitt correctly the water in the heater tank is isolated from all water outputs. The only chance heater tank water has to escape would then be through the steam wand.

                            Comment


                            • Dimal
                              Dimal commented
                              Editing a comment
                              the water in the heater tank is isolated from all water outputs.
                              By Heater Tank, do you mean the machine's Boiler or Water Reservoir?

                            • Javaphile
                              Javaphile commented
                              Editing a comment
                              He means the boiler Mal, Nuova calls it the Heater Tank. Probably one of those literal translation things.


                              Java "Translate what?" phile

                            • snoopen
                              snoopen commented
                              Editing a comment
                              Haha, yep, I've obviously been reading the NS manuals. A lot of literal translations in those things!

                          • #15
                            Oh I mean boiler

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