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San Marino CKXE

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  • San Marino CKXE

    As part of my buying spree, I just picked up a 2-year old San Marino CKXE. Came with a Mazzer Mini, too

    It all looks to be in very good condition, sits at around 1 bar pressure, but I've noticed a couple of things:
    * Terrible group gasket, feels like it was replaced with a piece of plastic. I couldn't get it out for the life of me! I'm going to try the self-tapping screw followed by flat screw trick tonight.
    * Shower screen is stuck. Backflush was fairly nasty but didn't help with removing it.
    * The 'program' button doesn't feel as clicky as the other buttons. It works when pressed but doesn't have the pokey feel of having a button behind it like the other buttons do. Is this normal?
    * The steam output doesn't look like enough - but I'm not sure what enough is for this machine.

    I've never owned a HX machine before! I am excited by the possibilites...

    Will the shower screen be any easier to remove after the group gasket is out? Should I just order a new shower screen and destroy the old one with a set of pliers? Or is there some removing trick I don't know about?

    Descaling... is it worth descaling a 2 year old HX machine? It wasn't plumbed in, so no filter was in place, but Melbourne has quite soft water. So, I'm not sure what to do here.

    Steam pressure. It came with a 5 hole tip - and just looking at it, it seems that there isn't much steam. Should this create loads of steam? Or does a 5 hole tip mean there's less pressure therefore less steam from each hole? Would I be better off with a tip with less holes - as a milk amateur I found the current tip difficult to use.

    Oh boy, so many questions... my biggest post ever.
    Last edited by tass; 2 April 2013, 01:47 PM. Reason: My mistake, not E61

  • #2
    So, I've ordered:
    * New shower screen
    * Gasket
    * 2 hole steam tip

    Lastly, I noticed that the hot water switch turns the pump on. Does this mean the hot water is coming via the heat exchanger? It doesn't seem to steam out like I'm used to seeing from a HX machine. Can you descale the boiler on this if that's the case?

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    • #3
      Really talking to myself in this thread, but after a quick dismantle, I can see two heat exchangers here.

      I've attached a picture of the boiler:

      The top-left pipe is for hot water.
      The bottom-right pipe is for the group.
      The bottom left is steam.

      So, two separate heat exchangers for hot water and brewing, and the boiler is only used for steam.

      There is something coming out the bottom of the boiler but I haven't yet traced what it is. Hopefully it's a tap to empty the boiler - the steam currently smells a little stale (but not stinky from milk, luckily!)
      Attached Files

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