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Thread: Breville BES920 Dual Boiler - Owners thread

  1. #1901
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    Screw hole and shower screen marks are there after the shot.
    The puck is a bit sloppy so after removing and allowing to dry I applied the Razertool and the puck is below the level of the tool even with 20grams in the basket.
    For me and my old BCG800 I have settled on 20grams as the optimum dose.

  2. #1902
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    Quote Originally Posted by mthomas87 View Post
    Using my BES900 at work with a pretty new BCG820 I'm grinding at 13 and about 21g into a double with about 12s til first drips and a 25-30s extraction. Has the grinder been pulled apart at any point that you know of? I think it's possible to stuff up the zero point of the grinder. There's also a burr setting you can change (New Breville BCG820 "Smart Grinder Pro")

    Has it always been like this? The BCG800 used to have issues with the impeller wearing out but I thought the 820 was stainless instead of plastic.
    .
    Thanks for the reply. I had no idea you could easily change the burr setting. I had a look and mine was set on 6, so I'll make it finer and see if that improves my shot. The grinder hasn't been touched since new.

  3. #1903
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    Quote Originally Posted by Valvster View Post
    Screw hole and shower screen marks are there after the shot.
    The puck is a bit sloppy so after removing and allowing to dry I applied the Razertool and the puck is below the level of the tool even with 20grams in the basket.
    For me and my old BCG800 I have settled on 20grams as the optimum dose.
    There is no point in using the Razor after the shot. Use the Razor to get the level right before the shot. If you then insert the portafilter, the puck won't touch the shower screen. After you remove the portafilter AFTER the shot, there will will be screen marks on the puck. This is correct.
    The used puck should be reasonably dry, not sloppy. It should be firm.

    If you weighed your coffee going into the into the basket, this weight would be the correct weight to use going forward. The correct weight may change depending on the coffee being used, albeit very slightly.

    I'm using a 18g VST basket and 18g is the correct weight for the BES 920. I also have a Izzo Vivi and it needs 19g in the VST basket. This implies the shower screen is shallower in the basket in the Izzo.

  4. #1904
    Senior Member csutak40's Avatar
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    I have upgraded from a BES900 and am having a few problems.
    First... With the BES900 I had the famous flying group handle problem. I was sure that this will not be happening with the 920. Well, it has happened once, but worse, twice now the handle flew off BEFORE I even put coffee in it, while it was warming up! That certainly never happened with the BES900! Has this happened to anyone else?
    The second problem is that I just can't seem to dial in a consistent shot. I have a VST 20gr basket and a naked portafilter, which I had purchased for the 900, but it seems to fit (hmm, maybe it doesn't fit 100% and that is the reason for the fly offs? This thought had just occurred to me)
    I weigh the coffee every day (23gr), even use the Razertool to be sure, time the shot (30 seconds after preinfusion) and hope to get 60ml of coffee. I keep adjusting the grinder to achieve that. The problem is, having achieved it, and changing nothing the next time, I don't get 60ml. Sometimes I get a lot less (say 45ml) sometimes a LOT more. Even as much as 110ml, unless I stop the shot before the 30seconds are up. The only thing that has changed is that the beans are now a day older, but every other variable is exactly the same.
    What am I doing wrong?
    Also, the puck is always wet, which never used to be the case with the 900. I haven't changed any of my "habits" since I got this machine, (except, I have reduced the amount of beans, after reading this Forum and trying the Razertool, seems I have been overdosing all this time. Used to use about 25gr) so I can't understand why I can't get it right.

  5. #1905
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    Quote Originally Posted by csutak40 View Post
    ... a naked portafilter, which I had purchased for the 900 ...
    Unless you purchased the naked portafilter after the BES920 was introduced, you'll have to modify it by grinding a notch in the handle as shown before it will properly fit the 920.

    IMG_1130.JPGIMG_1131.JPG

    If you're going to try this yourself, search for how to grind stainless steel first. The main tip is to use a brand new aluminium oxide grinding wheel. Don't touch the handle with anything that's been used to grind or file normal steel or the surface will be contaminated and it will rust.
    Last edited by Banjo.au; 1 Week Ago at 08:43 AM. Reason: Added grinding tip.

  6. #1906
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    Quote Originally Posted by dlight View Post
    There is no point in using the Razor after the shot. Use the Razor to get the level right before the shot. If you then insert the portafilter, the puck won't touch the shower screen. After you remove the portafilter AFTER the shot, there will will be screen marks on the puck. This is correct.
    The used puck should be reasonably dry, not sloppy. It should be firm.

    If you weighed your coffee going into the into the basket, this weight would be the correct weight to use going forward.
    Just to clarify.....of course I'm aware the Razor should be used before the shot my post was in response to a query from Bismuth a few days ago about the coffee pressing against the shower screen.

    "Hello all, my first post here! I bought the machine in November and have been making some great coffee save one frustration. After tamping (and even checking the dose is correct with the razor tool) the coffee is still pressing up against the shower screen when the group handle is attached (using the single walled double shot basket). If I reduce the dose the flow rate is effected and adequate pressure isn't generated - I would have thought that the suggested dose from the razor tool was at a level that wouldn't be against the shower screen? Any ideas?"

    I have found that using fresh beans + Breville single wall basket + Breville supplied tamper + Razer + old BCG800 grinder I get :
    18gram dose = watery under extracted shot at 5-7bar + wet puck + channelling + puck with shower screen marks
    19gram dose = under extracted shot at 7bar + wet puck + occasional channelling + puck with shower screen marks
    20gram dose = shot extracted at 8-9 bar + wet puck + puck with shower screen marks + tastes luvvly

    I don't use the Razer when dosing and always thought the puck expanded during extraction (otherwise there would be severe edge channelling?)
    Today I dosed at 19gram and forgot to check with the Razer before the shot and got the above result....I checked with the Razer after the puck had
    dried and there was daylight....maybe the puck shrinks?

    Conclusion...I need a properly fitted tamper, new grinder, more precise scales and the Razer is useless.

  7. #1907
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    I have followed all the advice from folks on this site to no avail and a suggestion from Breville USA support suggestions to squirt some compressed air up into the group head water dispensing hole. It still didn't fix the descale problem and now I get no steam from the steam wand. Just 3 beeps and absolutely no steam. I am now really frustrated and ready to ditch this Breville machine if I can't get it fixed. It is out of warranty of course now so I will have to spend a bunch of money to get it fixed since I will have to ship it somewhere for service.

  8. #1908
    Senior Member csutak40's Avatar
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    Quote Originally Posted by Banjo.au View Post
    Unless you purchased the naked portafilter after the BES920 was introduced, you'll have to modify it by grinding a notch in the handle as shown before it will properly fit the 920.

    IMG_1130.JPGIMG_1131.JPG

    If you're going to try this yourself, search for how to grind stainless steel first. The main tip is to use a brand new aluminium oxide grinding wheel. Don't touch the handle with anything that's been used to grind or file normal steel or the surface will be contaminated and it will rust.
    I am not sure what I'm looking for. This is what mine looks like
    2018-01-12 14.44.48.jpg2018-01-12 14.44.14.jpg

  9. #1909
    Senior Member csutak40's Avatar
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    I just noticed thisNaked portafilter for the Brevill BES920 Dual Boiler
    I wonder if that is what's causing it to fly off - he reckons the 920 is slightly bigger
    However, just looked on Breville and it says This item compatible with BES980XL, BES920XL and BES900XL.

  10. #1910
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    That's my portafilter. I think the difference is that the later version works with both the 920 and the 900. If yours is flying off, are you using the stock basket? I found that my VST basket more easily came off during brew, but it was usually temporary, eg after cleaning or changing seal.

  11. #1911
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    Quote Originally Posted by iampivot View Post
    That's my portafilter. I think the difference is that the later version works with both the 920 and the 900. If yours is flying off, are you using the stock basket? I found that my VST basket more easily came off during brew, but it was usually temporary, eg after cleaning or changing seal.
    I am using the VsT basket.
    I am still not clear, is mine different from Banjo.au ?

  12. #1912
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    Compare the naked one to your normal portafilter. See if the ears are different. If your naked flies off more than the normal portafilter, then it's an issue with the portafilter, otherwise, I'd say it's the basket which has a slightly different flange to it.

  13. #1913
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    Quote Originally Posted by csutak40 View Post
    I am still not clear, is mine different from Banjo.au ?
    No, it's effectively the same. Earlier 900 nakeds didn't have the notch in the handle, so they can't be used in a 920 without modification.

    I ground the notch myself and it works fine in my 920. The ears have a slightly different ramp profile to the stock 920 portafilter, but it's never fallen out in use even with VST baskets or after cleaning. I do have to turn it further to lock it in.

  14. #1914
    Senior Member csutak40's Avatar
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    Quote Originally Posted by Banjo.au View Post
    . I do have to turn it further to lock it in.
    I have been a bit scared to tighten it too much as the repairer (with my 900) told me that people make a mistake by tightening too much and that is what wrecks it

  15. #1915
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    Quote Originally Posted by csutak40 View Post
    I have been a bit scared to tighten it too much as the repairer (with my 900) told me that people make a mistake by tightening too much and that is what wrecks it
    The repairer is correct, gorilla force combined with over dosing are a bad combination.

  16. #1916
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    Same force, more travel with the same basket.

  17. #1917
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    Quote Originally Posted by John1938 View Post
    I am unable to complete the descale process and cannot get rid of the descale notice on my display. Also am tasting the descale chemicial in my coffee.
    I tried to follow the instructions in the manual to the letter and can't get it to work properly. I did somehow manage to get to the 20 minute routine that filled the boilers with the descale solution but con't complete the procedure. It keeps displaying "Valv" and beeps 3 times. I have tried multiple times but have had no luck in getting past this to complete the flushing out of the solution and refilling the boilers with clean water. I have had to give up on the Descale function and started up normally to fill the boilers and have then emptied them by pressing the manual button to put out water and use the Hot Water function and Steam nozzle many times,
    I really would like to know how to actually complete the Descale process.
    Thanks,
    John
    I had issues descaling my 920 last time. I couldn't get the boilers to empty properly, much the same as the error you are getting.

    The advice I received from Breville Australia was to follow the attached BES920 Descale Flyer_1337 to current_A15_Lowres (3).pdf (updated) process, and during the draining part, tilt the machine forward to get the water out.

    Worked for me, so hopefully it helps.

  18. #1918
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    Whoops, the "Clean Me" notification has popped up again and I forgot what I researched last time it happened (used the last of my free tablets).

    Can you use a little of the Cafetto Descaler Powder to clean the machine via the filter basket (Clean Me cycle, not descaling)? Or do I need to get the specific "cleaning powder"? Heard the powder was the way to go than tablets.

    Cheers

  19. #1919
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    I would say the actual cleaning powder

  20. #1920
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    Quote Originally Posted by Cloudy View Post
    Whoops, the "Clean Me" notification has popped up again and I forgot what I researched last time it happened (used the last of my free tablets).

    Can you use a little of the Cafetto Descaler Powder to clean the machine via the filter basket (Clean Me cycle, not descaling)? Or do I need to get the specific "cleaning powder"? Heard the powder was the way to go than tablets.

    Cheers
    DONT use descaler, do use a back flush powder such as Cafetto EVO or similar.

  21. #1921
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    Thanks Rusty & Yelta for the quick response. I see the cafetto powder on eBay for ~$22 for 500g delivered. How much do you use? About a tablet portion? Wondering if I should go the 1kg option for not much more.

  22. #1922
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    Quote Originally Posted by Cloudy View Post
    Thanks Rusty & Yelta for the quick response. I see the cafetto powder on eBay for ~$22 for 500g delivered. How much do you use? About a tablet portion? Wondering if I should go the 1kg option for not much more.
    I use a level teaspoon of EVO to back flush, 500 grams will last for ages.

  23. #1923
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    500g is all you need. Iím probably less than a scoop and it will last forever.

  24. #1924
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    I use a scoop of the powder (scoop comes in the jar) and the built in cleaning cycle

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