Results 1 to 9 of 9

Thread: Vibrating Giotto

  1. #1
    Junior Member
    Join Date
    Mar 2005
    Posts
    18

    Vibrating Giotto

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Hi Everyone,
    Just after some feedback regarding the Giotto. When the pump switches on on mine it is quite loud and makes a vibrating noise. The pump itself sounds fine but not sure if it should be this loud.
    Is this normal? Ive read that Giottos are really quiet but mine doesnt seem to be.
    Also, as part of the initial set up I gave the steam a really good purge for 20-30 seconds but because the arm was pointing straight down a fair bit of moisture went behind the drip tray, around the pressure gauge and the on/off switch. Is this a big deal? Im guessing theyre pretty tough and made for this.
    Thanks for your help!

  2. #2
    Senior Member
    Join Date
    Dec 2004
    Posts
    485

    Re: Vibrating Giotto

    I havent had any practical experience with the Giotto but the couple of times Ive used the Diadema Junior (similar machine) the rattling created by the vibration pump was noticable. Ive heard of people pulling their machine apart and trying to dampen the sound by minimising metal on metal contact points. I dont think it was a big success. When I mentioned it to my local vendor he said, its only noisey for 25 seconds ;)
    Hes got a point.

    The other thing he suggested was if I wanted to I could house the pump outside the machine, but Im willing to put up with some rattling in short bursts.

    I dont think there would be much to worry about with the steam wand incident. Im sure machines of this calibre are made to withstand much worse abuse.

  3. #3
    Mal Dimal's Avatar
    Join Date
    Oct 2004
    Location
    Warwick, QLD
    Posts
    16,879

    Re: Vibrating Giotto

    Hi newbean,

    Actually what you need to do to minimise sympathetic resonance and rattling throughout your machine is to fix your pump to a substantial metallic base, not rubber as one would think.

    The problem with rubber is that the vibration although isolated from its fixing points, is allowed to travel unhindered via any piping attached to the pump. If this piping is rigid, eg like copper, then this vibration is transmitted throughout the entire machine.

    By fixing the pump to a metal base, say 100mm(L) x 25mm(W) x 6mm(H) and fixing this in turn to the machines frame via substantial fixings such as 6mm bolts and nuts, the generated vibration energy is dispersed over a wider area and results in lesser perceived noise. This can be further improved by attaching all piping to the pump via flexible high pressure couplings which will decouple the pipework altogether and restrict this network from proliferating the noise.

    This might all be academic as far as your Giotto is concerned as if it is still under warranty you wont want to start fiddling around with its internals. What you might want to look for though, if there is any sign that the pump or any attached pipework is in contact with any of the Giottos panel work. If it is, and it is simply adjusted then you might be able to do it yourself. If you think it is going to require more effort than this, then you might have to refer it back to your retailer to be fixed under warranty.

    Hope this has been of some help. All the best,

    Mal.

  4. #4
    Junior Member
    Join Date
    Jan 2005
    Posts
    18

    Re: Vibrating Giotto

    Hi,

    Dont have one of my owne *:( but have seen one demod
    I remember John pointing out that ther was a fifth foot in the middle of the machin for the purpose of noise reduction.
    He did note to adjust this foot last.
    (cant remember if the unit was a premium or not)

    Have a look, give it a try.

    Regards,
    Boris

  5. #5
    Junior Member
    Join Date
    Mar 2005
    Posts
    18

    Re: Vibrating Giotto

    Thanks Guys,
    I appreciate the feedback. I did read a post on the net that someones Giotto sounded like chitty chitty bang bang! It made me feel a bit better about mine.
    If similar machines also have relatively noisy pumps Ill let it be. Ill also look at the feet underneath and if I have any success Ill let you know.
    Cheers

  6. #6
    Senior Member
    Join Date
    Nov 2004
    Location
    Sandringham NSW
    Posts
    134

    Re: Vibrating Giotto

    How old is the Giotto?????

  7. #7
    Junior Member
    Join Date
    Mar 2005
    Posts
    18

    Re: Vibrating Giotto

    Only a couple of weeks and brand new. It had been bench tested before I bought it.

  8. #8
    Senior Member
    Join Date
    Nov 2004
    Location
    Sandringham NSW
    Posts
    134

    Re: Vibrating Giotto

    Newbean
    I do not recognise your sign on.
    The pump should not be very noisy.
    If you bought the machine from me, please call me ASAP.
    If not ,I sugest that you contact the place where you purchased the machine.
    We usually bench test all our machines for 3-5 days, and from time to time have made adjustments to the pump to make it quieter.
    I could make some suggestions, but as it is a new machine, as soon as you lift the lid you void your warranty.
    I would be interested to look at your machine, but then again, only one problem as soon as I touch it, your warranty would be voided.
    John


  9. #9
    Junior Member
    Join Date
    Mar 2005
    Posts
    18

    Re: Vibrating Giotto

    Behmor Brazen - $249 - Free Freight
    Hi John,
    I purchased the machine from a supplier here in Sydney. I might give them a call next week and talk it over with them. I appreciate the offer to have a look but will avoid opening it up just yet to protect the warranty as you mentioned.
    Fortunately I bought it close to home so I can return it quite easily.
    Ill keep you posted on how it goes.
    Cheers




Similar Threads

  1. Rotary vs Vibrating pump
    By alisters in forum Brewing Equipment (non-machine specific)
    Replies: 15
    Last Post: 21st August 2009, 09:45 AM
  2. Vibrating manometer noise
    By Wushoes in forum Brewing Equipment - Extreme Machines ($3000+)
    Replies: 6
    Last Post: 11th February 2009, 08:54 PM
  3. VBM Levetta vibrating
    By MarkC77 in forum Brewing Equipment - Midrange ($500-$1500)
    Replies: 5
    Last Post: 4th March 2008, 01:35 PM

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •