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advice on descaling em6910

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  • paulsmithx
    replied
    Thanks Tampit,
    Had ruled out the milk/wand thing and cleaned the nozzle. I thought I'd clean prior to surgery and it worked. An afternoon's descaling session and she's right as right can be.
    Best, P

    Leave a comment:


  • TampIt
    replied
    Originally posted by paulsmithx View Post
    Oh oh. Our faithful EM6910 has just stopped producing steam. Symptoms are a periodic squeak with a disharge of water into the tray and very low steam if any. The pump is making pumping sounds and we assume that the little water coming out the bottom means that it's working.

    I've tried the suggested low heat/max wet + vinegar solution with virtually no improvement.

    Guess it's off to find some commercial descaler and put her outside for a run tomorrow some time.

    Any further advice?
    Thanks,
    Paul
    G'day Paul

    The first step would always be to remove the nozzle (unscrews on a 6910, right hand thread) and then see if that helps.

    Noidle has reported that in "non West Oz states" things tend to block up / fail at the pump to thermoblock section. Surgery required.

    No idea why, however in WA it is normally milk slurped up into the wand that creates issues. If the nozzle is blocked, try checking the lower part of the wand and see if it is blocked as well. Hopefully you can clear it up by using a pipe cleaner, perhaps dipped in some solvent. In an extreme I have removed the whole wand and used an ultrasonic bath to clean the worst of the gunk out of it. When even that failed I resorted to a last resort (too dangerous for CS "in the wild").

    Hope this helps


    TampIt

    Leave a comment:


  • TampIt
    replied
    Originally posted by Gerry123 View Post
    Thanks TampIt.. Do you remove the anticalc filter. Again in the em7000 manual it doesn't say to remove it when descaling...
    G'day again Gerry

    I removed mine before I filled it with my filtered rainwater for the first time (any machine since the '80's). The things taint the coffee unacceptably AFAIAC.

    Yes, you should remove it before putting vinegar through it anyway - at the least it would be a lot harder to rinse vinegar out of the decalc filter whilst trying to get the rest of the machine free of the vinegar taste.

    TampIt

    Leave a comment:


  • paulsmithx
    replied
    Oh oh. Our faithful EM6910 has just stopped producing steam. Symptoms are a periodic squeak with a disharge of water into the tray and very low steam if any. The pump is making pumping sounds and we assume that the little water coming out the bottom means that it's working.

    I've tried the suggested low heat/max wet + vinegar solution with virtually no improvement.

    Guess it's off to find some commercial descaler and put her outside for a run tomorrow some time.

    Any further advice?
    Thanks,
    Paul

    Leave a comment:


  • Gerry123
    replied
    Thanks TampIt.. Do you remove the anticalc filter. Again in the em7000 manual it doesn't say to remove it when descaling...

    Leave a comment:


  • TampIt
    replied
    Originally posted by Gerry123 View Post
    Sorry to bring this up, but when descaling an EM7000, the manual says the group head shower screen is to be removed, washed and replaced before starting the cycle which seems to be different to the above instructions for the EM6910 (run the descale with the shower screen off)

    So on an EM7000 do I leave the screen on or off when running the descale program

    Thanks in advance
    Gerry
    G'day Gerry

    It actually won't make much, if any, difference to the descaling process inside the machine.

    I have used the white vinegar at one to two tablespoons per litre on any & all espresso makers since the 70's.

    The main reason for leaving the showerscreens in place is to help remove the more persistent grunge which forms when coffee grounds and oils adhere to the showerscreen. In extreme cases they are incredibly difficult to remove. Leaving the showerscreens in situ actually helps them to become cleaner - which is always a good thing, never a bad one. Vinegar at 9 bar pressure can remove a lot of things that most other cleaners cannot deal with.

    FWIW, I would leave them in place on any machine unless I had a really good cleaning regime and I knew they were already pristine.

    TampIt

    Leave a comment:


  • Gerry123
    replied
    Sorry to bring this up, but when descaling an EM7000, the manual says the group head shower screen is to be removed, washed and replaced before starting the cycle which seems to be different to the above instructions for the EM6910 (run the descale with the shower screen off)

    So on an EM7000 do I leave the screen on or off when running the descale program

    Thanks in advance
    Gerry

    Leave a comment:


  • davehoz
    replied
    Re: advice on descaling em6910

    I just ordered some descalling tablets on ebay. Also found http://www.youtube.com/watch?v=lb0W2Ul2_3Y. Is that what to do with it? Also my machine is 3 or 4 years old - still going strong. Ive never descaled it before, how often should I do it?

    Leave a comment:


  • warden
    replied
    Re: advice on descaling em6910

    Sorry to necro an old thread. Just ran the descaling liquid from sunbeam through as instructed. However have put 6 litres of clean water through and still get a cloudy output. Followed the manual to a T.

    I know hot water can be cloudy, is this what Im seeing? Certainly not soapy etc.

    Leave a comment:


  • Crisp_image
    replied
    Re: advice on descaling em6910

    I have just used the vinigar method in my machine and I removed the filter in the water tank before doing so. Everything went fine and I noticed a little bit of gunk in the water. My machine is about 3-4 months old.
    There was no residual taste in the coffee or the water that was flushed through after the process.
    It does state not to put descaller through the seam wand. At SB coffee school they only recomended back flusshing tha machine every day after use and dont bother about descaling. I am of the opinion that that is incorrect as it will not clean the thermoblock but will clean the releif valve by the fact that water (clean) is released through the 3 way valve to the drip tray removing any coffee oil build up. but does not go back through the themo block.
    These are my thought only and have nothing to do with any others. I base my thoughts on a therotical knowlage and common sense therefore could be wrong and If anyone wants to correct me I will be happy to be.
    Regards
    Crisp Image

    Leave a comment:


  • A_M
    replied
    Re: advice on descaling em6910

    Originally posted by flatwhite link=1191327427/0#11 date=1192233490
    Originally posted by Thundergod link=1191327427/0#4 date=1191407275
    Page 32:

    .
    Ive just descaled using citric acid - 1.5 tablespoons in 500ml of water. Its what Ive used on my Saeco for years and seems to do the job as well as any of the branded descalers.
    Had a scary moment reassmebling the filter because there was no picture in the manual.
    So it has been some time and you have done this how many times since ?
    The results to date are ?

    Further more, I use filtered water and have not changes the in-line filter in the water reservoir to date...

    However it begs the Question How often if at all do you change this filter and do you leave it in when de scaling ?

    Leave a comment:


  • Thundergod
    replied
    Re: advice on descaling em6910

    Originally posted by flatwhite link=1191327427/0#11 date=1192233490
    Originally posted by Thundergod link=1191327427/0#4 date=1191407275
    Page 32:

    .

    I hope you didnt retype all of that!!!
    Thanks.

    No I didnt.

    Leave a comment:


  • flatwhite
    replied
    Re: advice on descaling em6910

    Originally posted by Thundergod link=1191327427/0#4 date=1191407275
    Page 32:

    .

    I hope you didnt retype all of that!!!

    Ive just descaled using citric acid - 1.5 tablespoons in 500ml of water. Its what Ive used on my Saeco for years and seems to do the job as well as any of the branded descalers.
    Had a scary moment reassmebling the filter because there was no picture in the manual.

    Leave a comment:


  • christretto
    replied
    Re: advice on descaling em6910

    Hey good idea Toad...

    Leave a comment:


  • Toad
    replied
    Re: advice on descaling em6910

    Ive tried most of the DIY mixtures, with varying success.

    But when i bought the 6910, I figured it deserved a little respect.  So I bought some commercial descaler (and back-flush powder) from Coffee Parts, who are a site sponsor.

    I am amazed how much gunk each of the products removes. The descaler is not cheap, but I save the water and descale my kettle and steam iron at the same time.

    Leave a comment:

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