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Profitec Pro 500 filling boiler during milk steaming

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  • #16
    Originally posted by Jackster View Post
    It would be pretty easy (in interim) to switch machine off when using the steam, them back on once finished steaming and ready to brew. Hopefully it's just some crud on the probe as mentioned above. I measured it before- how much water is added when steaming a jug of milk. May have been 100ml or so? Anyway, it shouldn't be enough to trigger the autofill if boiler is full already. Maybe test that. See how much hot water you can take before triggering the fill. (If it takes hot water from the boiler that is)
    So I took water from the tap and allowed it to do a full refill and recovery, then: -130mls out before the refill kicked in again -1min 18sec to fully recover steam pressure Is that comparable with others?

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    • #17
      I'm not home, so can't measure mine. Also my hot water comes from the hx, not the boiler.
      hopefully someone with a more similar machine can compare and report back.
      130mls doesn't sound much. Not even a cupfull for a cuppa tea

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      • #18
        Originally posted by simonsk8r View Post
        Yeah, well it basically refills it then and there's no chance of it wanting to refill around the end stage. And yeah I mainly do it just to refresh the boiler water but it gets the cups super hot and prevents it from refilling at steaming time, so bonus!
        I did what you suggested this morning and it was better. I still didn’t get through my routine before it filled, and it filled during milk texturing.

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        • #19
          Out of interest, what sort of water filtering are you using? Do you regularly refresh the water in the boiler?
          Excessive dissolved mineral compounds in the boiler water could possibly lead to a very narrow band of operation...

          Mal.

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          • #20
            Originally posted by Dimal View Post
            Out of interest, what sort of water filtering are you using? Do you regularly refresh the water in the boiler? Excessive dissolved mineral compounds in the boiler water could possibly lead to a very narrow band of operation... Mal.
            I’m in Melbourne and our water is already quite soft, though I’m filtering it with a BRITA extra filter. I empty the boiler regularly.

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            • #21
              Can you pull the water level probe, and give it a bit of a scrub? Scotch Brite will do it.
              then see if more than the 150ml comes out before refill.

              Hoping someone else can test their machine to compare for you.

              Till then, turn it off when steaming. I'm sure that will work for you till you get sorted.

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              • #22
                Originally posted by crazyhakins View Post
                I did what you suggested this morning and it was better. I still didn’t get through my routine before it filled, and it filled during milk texturing.
                Hmmm that's interesting that it still didn't make it without having to refill... sorry can't offer any more advice, not sure :s

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                • #23
                  Originally posted by Jackster View Post
                  Can you pull the water level probe, and give it a bit of a scrub? Scotch Brite will do it. then see if more than the 150ml comes out before refill. Hoping someone else can test their machine to compare for you. Till then, turn it off when steaming. I'm sure that will work for you till you get sorted.
                  As in use water from the hot water tap and see how much it lets out before refilling the boiler? I thought you meant the steam wand before, but that didn't seem right to get 100ml or so outta that haha! Got the iso crazies.... I'll try it tomorrow! (Have had my Profitec Pro 500 for about 2.5 years now)

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                  • #24
                    Yes Simon.
                    Take water from hot water spout and see if you get more than 150ml before it refills.

                    https://www.jetblackespresso.com.au/...d-view-boiler/
                    Parts list here^
                    Seems to suggest hot water is boiler water, so maybe on right track.
                    Also says water probe length is 80mm (item 21). Op could check this when cleaning his probe. Though I would clean and just check length initially, and then consider changing length after testing.

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                    • #25
                      Originally posted by simonsk8r View Post
                      As in use water from the hot water tap and see how much it lets out before refilling the boiler? I thought you meant the steam wand before, but that didn't seem right to get 100ml or so outta that haha! Got the iso crazies.... I'll try it tomorrow! (Have had my Profitec Pro 500 for about 2.5 years now)
                      I could be on wrong track... I'm just not quite sure how to diagnose the issue.
                      i did a weight check one time. Weighed a measure of milk and steamed it, then reweighed it. I really can't recall how much weight (water) it gained

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                      • #26
                        Ah okay yeah, I just wouldn't think the steam wand would add more than 100ml of water... I tried with the hot water tap just before (made a hot chocolate), made sure the boiler was full first, and I let out a little bit of hot water at a time, only got to about 48.5ml before it needed to refill. Will try again tomorrow anyways

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                        • #27
                          Hmmm...

                          Sounding more and more like a controller problem, too narrow a hysteresis to be useful.

                          Mal.

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                          • #28
                            Ok, I'll put my hand up as well.
                            My almost 5 year old Pro 500 also has done a boiler top up on the odd occassion, usually only lasts for a second or two and barely impacts the pour.
                            While I have questioned the logic myself at the time, I haven't thought to mention it during a machine service, probably because I have forgotten as it does not occur frequently enough or long enough to cause me much angst.
                            Will be interesting to see if this is confined to Profitec/ECM HX machines or if any other brand has a similar issue.

                            Mal

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                            • #29
                              Originally posted by Brewster View Post
                              Ok, I'll put my hand up as well.
                              My almost 5 year old Pro 500 also has done a boiler top up on the odd occassion, usually only lasts for a second or two and barely impacts the pour.
                              While I have questioned the logic myself at the time, I haven't thought to mention it during a machine service, probably because I have forgotten as it does not occur frequently enough or long enough to cause me much angst.
                              Will be interesting to see if this is confined to Profitec/ECM HX machines or if any other brand has a similar issue.

                              Mal
                              Mine is the same if it fills whilst the shot is pouring - doesn't affect the shot at all, but when steaming it kills it. I'm guessing the cooler water missing with the steam affects how 'wet' the steam is coming out of the machine. I could be wrong, but I feel like this is just one of the tradeoffs of a Hx machine.

                              I'll be checking the probe over the weekend, replacing the ant-vac at the same time and giving the machine a good go over and report back on my results.

                              Turning the machine off as I steam the milk doesn't work for me because I lose pressure too quickly. My wife has a larger coffee (thinking mugacino) and likes it hot, so it does take a fair bit of steam to get it up to temp.

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                              • #30
                                Never experienced these issues with any of the HX (or DB) machines I have owned and would be atypical in my opinion. Boiler filling during a shot should never happen in modern machines and the experience of it happening regularly during milk texturing is odd, to say the least. Still feels like a controller issue...

                                Mal.

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