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Thread: Sunbeam 4800 design problem?

  1. #1
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    Sunbeam 4800 design problem?

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Gday folks,

    This is my first post on this forum, Iíve spent a day reading through all the hints and tips, just ordered the green bean starter pack and a non-pressurised basket and proper tamper. *Many of my searches pulled up group head seal replacements, and lots of you veterans telling people to search properly *:).

    We replaced our Sunbeam 3600 (red ďspecial editionĒ one) with the 4800. *In hindsight the special edition wasnít as good as the silver one my BIL has. *After 18 months of faithful service the group head seal wore out. *Which brings me to my main question. *Both these machines had/have the seal held in by a screen which in turn is held in by a single crappy screw. *Crappy because they seem corrode to the group head (made aluminium, screw some sort of stainless = galvanic corrosion perhaps). *This renders the seal un-replaceable. *I actually re-drilled the 3600 and put a proper allen bolt in, but the thing never sealed as well as it should have and the whole lot cracked 6 months later, group head or collar or something.

    So anyhow, blow me down when I unpacked the 4800 and the screw head started to strip with the slightest pressure (yes from the correct size screw driver). *Is this a common problem? *Do they alloy their steel with butter? *Iíll be getting a new group head seal by the Sunbeam rep prior to the 1 year warranty running out!

    I cant be the only sucker that had to buy a new machine because they used a 5 cent screw versus a 7c screw? *I complained to Sunbeam and they didnt even both read my email properly, saying I needed the seal replaced.

  2. #2
    A_M
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    Re: Sunbeam 4800 design problem?

    Quote Originally Posted by 63405D5A5C42484B455C4C290 link=1283237506/0#0 date=1283237506
    After 18 months of faithful service the group head seal wore out.
    Replace them every 4 months and pull the head / shower screen apart every 3 to 4 weeks and clean ...

    If not, ya get what ya get..

    Quote Originally Posted by 63405D5A5C42484B455C4C290 link=1283237506/0#0 date=1283237506
    This renders the seal un-replaceable.
    If the maintenance is not done timely or like some; who OVER tighten when the system is still hot.. YES teh shower screen can become a problem to get off. Guess what. Happens with machines worth thousands... Bad service / workmanship.

    Quote Originally Posted by 63405D5A5C42484B455C4C290 link=1283237506/0#0 date=1283237506
    I actually re-drilled the 3600 and put a proper allen bolt in
    If it was not counter sunk type head and depending on which head system and how far in you drilled; this could totally wreck it as there are some interesting water pathways in some of these systems.

    PS. My 4800C lasted some 4 years until I wanted parts from it. And my old very old 3600 was passed on to a mate some time ago... Still going. Change a seal every so often and they are almost bullet proof.

  3. #3
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    Re: Sunbeam 4800 design problem?

    I reckon it is a common problem as when I went into the local service centre to pick up a new seal for my 4800C, the nice lady checked how old the machine was and advised me to regularly remove the shower screen and clean it to avoid the screw getting permanently stuck.

    The first seal for my 4800c lasted precisely six weeks, so I dont think this is exactly a precision made unit! The new seal works a lot better than the first one ever did, I have my suspicions it wasnt on straight or was faulty, as I had to tighten it like crazy to get it to seal at all, even when new and with the original double walled baskets-and that inevitably led to it splitting. Even with the slightly looser unpressurized basket Im now getting very good 30s pours with no leaks at all, with very gentle tightening.

  4. #4
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    Re: Sunbeam 4800 design problem?

    Quote Originally Posted by 604F4644536C404F4046444C444F55210 link=1283237506/1#1 date=1283238178
    Replace them every 4 months and pull the head / shower screen apart every 3 to 4weeks and clean ...
    If not, ya get what ya get..
    Thanks, but straight out of the box? Next opportunity I will get them to replace the seal. Thanks for the advise

    Quote Originally Posted by 604F4644536C404F4046444C444F55210 link=1283237506/1#1 date=1283238178
    If it was not counter sunk type head and depending on which head system and how far in you drilled; this could totally wreck it as there are some interesting water pathways in some of these systems.
    Nope, not countersunk - the unit was finished so I had nothing to loose, and yes there were some interesting leak paths going on.
    Thanks for the advise, will get seals changed ASAP. I suspect they wont be able to remove the screw as its already corroded straight out of the box.

    Surely $500 - $1000 machines have a better fixing system than this? The presso seems to have a ring than holds the shower screen against an o-ring. Id buy a $50 tool to avoid this problem!

  5. #5
    A_M
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    Re: Sunbeam 4800 design problem?

    Quote Originally Posted by 02213C3B3D23292A243D2D480 link=1283237506/3#3 date=1283243741
    Surely $500 - $1000 machines have a better fixing system than this?
    Some one else tell him ;D

    In effect two main methods to keep teh Shower screen in place..

    1: A Screw
    2: Interference fit and the Group seal

    It means two different processes and tends to be on two separate group concepts.

    And yes, once under teh shower screen.. Guess what more screws; regardless of what holds teh screen on..

    Ya take care and treat correctly... All is OK.

    Its like having to use a Key and a yale lock rather than an eye print.

    The key works great; unless you use Stilsons on it :D ;D :o



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