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Thread: Domobar durability?

  1. #1
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    Domobar durability?

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Im just wondering. Since this machine is geared towards the domestic market, can it handle a higher volume use? Say 20 shots a day?


  2. #2
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    Re: Domobar durability?

    Of course it can...any machine can. If youre wanting to know if it can handle 20 double handles in a row...thats a different story. Best ask the experts.

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    Re: Domobar durability?

    What I meant was will that sort of abuse decrease the life of the machine? and yes 20 double handles in a row.


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    Re: Domobar durability?

    Any given machine will be capable of making a specific number of shots. in that machine, some part will fail eventually. Some are considered service items such as brewhead gasket, steam and hot water seat gaskets, and brewhead seals.

    The other part that is prone to failure is the pressurestat. The VBM Supers have a very heavy duty Pstat in them. its life can be extended by the wiring a solid-state relay (SSR) between the Pstat and the heating element.

    So using it like that (20+ shoots a day) will shorten the span between servicing, but will not decrease the number of shots between servicing).

    On the other hand, leaving a machine on all day is better for it that turning it on and off a few times a day.Leaving it on eliminates one level of stress on components which can eliminate one cause of failure.

    The other benefit of the VBM Supers is that they are relatively easy to service because of the amount of space between components inside. That also is good for the life of the machine because with the electronics mounted in the bottom as they are, the space allows a freer airflow though the interior which keeps the electronics cooler.

    Oh, just buy the freakin thing already! ;-)


  5. #5
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    Re: Domobar durability?

    Quote Originally Posted by Randy G. link=1211719356/0#3 date=1211730423
    Oh, just buy the freakin thing already! * ;-)
    He did ;)

  6. #6
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    Re: Domobar durability?

    Yes I did...

    The machine goes on in the morning for a couple of hours then in the evening for a couple of hours.

    Just thought I might be killing the machine....


    Hmm....I should be more concerned about my health with the amount of coffee im drinking! :s

  7. #7
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    Re: Domobar durability?

    Ive been leaving mine on all day since I had it, turning it off overnight.


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    Re: Domobar durability?

    how long has it been?

  9. #9
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    Re: Domobar durability?

    6 days 2 hours 57 minutes (give or take)

  10. #10
    ev
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    Re: Domobar durability?

    Mines been on since Jan 2005. You work it out!

    Evan.

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    Re: Domobar durability?

    Quote Originally Posted by Evan link=1211719356/0#9 date=1211802845
    Mines been on since Jan 2005. You work it out! - Evan.
    You didnt give a date, but if you powered it up on January 1, 2005, that would be approximately 75,686,400 seconds. There! I worked it out! ;D

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    Re: Domobar durability?

    Hmm I would assume having the machine on 24/7 would shorten its life? or at least the life of some components?

    How are you finding it Evan?

  13. #13
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    Re: Domobar durability?

    No probs Gavin. The only thing I replace regularly is the group gasket which is easy & only costs a few bucks.

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    Re: Domobar durability?

    So the p-stat is going strong? Great to hear if it is!

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    Re: Domobar durability?

    Quote Originally Posted by Evan link=1211719356/0#9 date=1211802845
    Mines been on since Jan 2005. You work it out!

    Evan.
    So youve never had a power blackout in all that time?? I find this hard to believe! Unless you live outside NSW ;-)

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    Re: Domobar durability?

    OK, you got me! Yes the machine has been powered off a few times for one reason or another but normally its on. If we go away, I switch it off & cut the water supply just in case.

    YeeZa, the original pressurestat is still going strong but I think the diaphragm is getting weak. The deadband is getting wider as time goes on. No big deal though. One day Ill fit the new style "pro" PS which apparently isnt very expensive.

    Overall, I really cant fault the machine & would buy again in a heartbeat.

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    Re: Domobar durability?

    Thing is, when the boiler refills from the water tank, mine goes on and off for a few times. it goes on and off real quick, then 3 seconds later slightly longer and stops, then again. Didnt really notice this untill recently...

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    Re: Domobar durability?

    Quote Originally Posted by Gavin1 link=1211719356/15#16 date=1211876689
    Thing is, when the boiler refills from the water tank, mine goes on and off for a few times. it goes on and off real quick, then 3 seconds later slightly longer and stops, then again. Didnt really notice this untill recently...
    I suspect that you either dont have enough ions in the water (using distilled, demineralised or RO water)

    or

    You have had too many scale producing minerals in the water (unsoftened hard tap water)...


    In the first case the probe cant quite detect the water level as not enough current will flow and in the second a layer of scale has built up on the level probe..... and this prevents the current flow...

    Both these will cause erratic operation of the fill circuit (even though caused for totally opposite reasons)....

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    Re: Domobar durability?

    Since Ive got the machine Ive only been putting in water from the brita jug....

    Thats odd

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    Re: Domobar durability?

    Quote Originally Posted by Gavin1 link=1211719356/15#18 date=1211879277
    Since Ive got the machine Ive only been putting in water from the brita jug....

    Thats odd
    Gavin.

    Where are you located? (Not in your profile).....

    Brita jugs remove the hardness.... but not for long (the filter needing to be changed far more frequently than the recommended frequency as the bits which reduce the hardness become depleted very quickly)...

    They should work well in Melbourne and Sydney but in Adelaide and especially Perth (where I live).... you will probably only get 1 weeks life from an element.... pretty damn expensive!!) Melbourne and Sydney.... maybe 3 weeks unless you use it for other than coffee (or have lots of coffees each day ;))

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    Re: Domobar durability?

    O.O

    Im in melbourne

    I use about two jugs a day just for the machine. Poped in a new one after about 6 weeks i think.

    But surely scale will take months too build up to a level where its affecting my probe no?

    Its only been say 8 weeks....




  22. #22
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    Re: Domobar durability?

    Quote Originally Posted by Gavin1 link=1211719356/15#20 date=1211880302
    O.O


    Its only been say 8 weeks....

    If the machine is only 8 weeks old..... no way is it scale..... that would take far, far longer!! (even with Perth water ::))

    In that case it is probably a problem with the autofill circuitry.... poor joint, fault with the autofill relay etc....

  23. #23
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    Re: Domobar durability?

    Hmm......

    Any thoughts Chris?

  24. #24
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    Re: Domobar durability?

    For mine, just variation between machines. When I bench test, some drink differently to others....

    Add a little salt to your water and see if it changes things ;)

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    Re: Domobar durability?

    Will do....

    Report back soon....

  26. #26
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    Re: Domobar durability?

    Ive noticed with my machine that when the pump fills the boiler it sometimes turns on for half a second or so.
    Its new, and bench tested by Chris so I figured it was just normal.
    Would be interested to hear whether others experience this.
    Straight tap water for now - In Tassie with pretty good water, but I now have a filter from Bombora which will be installed with the new kitchen that I am working on...

  27. #27
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    Re: Domobar durability?

    Ahh good to hear im not the only one...

    I just added a tiny bit of salt into the tank. Will see what happens tomorrow....

    Early in the morning when the machines been turned off overnight is normally 4-5s of continuous filling.

  28. #28
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    Re: Domobar durability?

    Um......Gavin, you sure Chris wasnt joking when he made the salt comment?

  29. #29
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    Re: Domobar durability?

    Quote Originally Posted by Evan link=1211719356/15#27 date=1211892618
    Um......Gavin, you sure Chris wasnt joking when he made the salt comment?
    No, not joking Evan. It is a good quick way to resolve the TDS question.

    Chris

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    Re: Domobar durability?

    It makes sense to do it tho.


  31. #31
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    Re: Domobar durability?

    Quote Originally Posted by Evan link=1211719356/15#15 date=1211875297
    OK, you got me! Yes the machine has been powered off a few times for one reason or another but normally its on. If we go away, I switch it off & cut the water supply just in case.

    YeeZa, the original pressurestat is still going strong but I think the diaphragm is getting weak. The deadband is getting wider as time goes on. No big deal though. One day Ill fit the new style "pro" PS which apparently isnt very expensive.

    Overall, I really cant fault the machine & would buy again in a heartbeat.
    Evan, I wouldnt really bother with a "pro" pressurestat if I were you. The smaller CEME and MATER stats actually have smaller deadbands. If durability is the issue, maybe its worthwhile fitting a relay for the stat to switch through.

    Im in melbourne

    I use about two jugs a day just for the machine. Poped in a new one after about 6 weeks i think.

    But surely scale will take months too build up to a level where its affecting my probe no?

    Its only been say 8 weeks...
    Note that the brita filter isnt really designed for removing scale. Itll remove abotu a third of the calcium per filtration if the filter is pretty new: see Jims Insanely Long Water FAQ. Dont get me wrong; I use one too, but Im not relying on it as an anti-scale measure - which I doubt you are either.

    Cheers,

    Luca

  32. #32
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    Re: Domobar durability?

    Luca, my PS is actually a Jaeger. Obviously no durability issues with the contacts on this baby! Theyve held up beautifully over the years. I just thought that if I ever do replace it, I might as well go with the "new improved" item. For the time being, its doing just fine.

    Chris, regarding the salt thing, how would you go about flushing all traces of salt out of your boiler once youve completed the experiment?

    Evan.

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    Re: Domobar durability?

    Evan,

    ur not putting a whole 250g bag of salt and run it into your boiler.

    With the amount I just droped into the water tank, I cant even taste it if iI sprinkle it on food.



  34. #34
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    Re: Domobar durability?

    One other minor consideration....Salt is soluble and brass is not scared of it ;)

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    Re: Domobar durability?

    Quote Originally Posted by 2muchcoffeeman link=1211719356/30#33 date=1211933109
    One other minor consideration....Salt is soluble and brass is not scared of it ;)
    Unless you use Chicken Salt ;D

  36. #36
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    Re: Domobar durability?

    Quote Originally Posted by YeeZa link=1211719356/30#34 date=1211933551
    Quote Originally Posted by 2muchcoffeeman link=1211719356/30#33 date=1211933109
    One other minor consideration....Salt is soluble and brass is not scared of it ;)
    Unless you use Chicken Salt *;D
    Im scared of chicken salt :o

  37. #37
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    Re: Domobar durability?

    Hmm...

    ok heres what Ive found after adding some salt into the tank.

    so morning, machine goes on, boiler takes in the biggest drink from the tank (with salt).

    Whenever the tank starts drinking when the water is low, not from running the hot water tap, but from steaming...etc, It still does the same thing.

    But this time, the fills are longer. No more .5 of a second fills. The last one was 2 fills. each about 2-3 seconds.

    Will observe more.....

  38. #38
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    Re: Domobar durability?

    Dont know if its the salt....

    But my shots this morning were amazing.....

  39. #39
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    Re: Domobar durability?

    Gavin,

    Sounds like your water is too pure alright....

    Melbourne has the best water in Australia..... over here in the west we strain it through our teeth and then chew the bits that get through!!!!!

    Without enough ions in the water (and the salt has provided those) the probe cant conduct properly and autofill wont function as it should.

    My water softener (ion exchange) replaces the calcium ions in the hard water with sodium ions..... and a lot of them at that......

    Looks like you have the desired result!



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