Originally Posted by 312A2728211B2E2D29440 link=1261793211/0#0 date=1261793211Hello all. Ive been lurking and reading here for over a year now and have enjoyed learning before buying. Sadly the buying part so far has meen less satisfying that I had hoped!
That is the fun part... After a year, you should know that it is often a rocky road. [/edit]
Santa (wife) brought me this combo, and I have been using the machine without the grinder successfully for the last week (I negotiated use of the machine pre-Christmas but had to wait for the grinder!). At that time I had been using pre-ground supermarket coffee with the double-floor double shot basket, without any problems whatsoever. I would fill the basket, smooth it, tamp relatively firmly until I had approx. 3mm clearance for the shower screen.
All fake and will disadvantage you when it comes to real coffee...[/edit]
Today though I have started witht he grinder and I cant get a coffee shot without water leaking out the group head.
Choking = Fine grind / overdosing and over tamping[/edit]
I set the grinder to 10 (outside of Sunbeams espresso range, I know, but I had read that the 0480 commonly undergrinds), switched to the single floor basket, and the coffee came out of the grinder extremely lumpy. I applied the same tamp pressure as I did before, it didnt compress much further. First shot the pressure gauge went off the charts, a small amount of water came through the spout, more out of the collar. The puck when tapped out was solid.
See comment above... Different beans = different grind and dose and tamp.. [/edit]
I repeated with grind at 13, filling the coffee container, using a spoon to eliminate the lumps (which were fewer this time but still over half the coffee was in lumps). Filled the basket, leveled, tamped the same pressure. The coffee compressed to past the metal part of the tamper. Same extraction problem. The puck would not come out readily, I had to use a knife to scrape it out, it was like a paste. Part was still stick to the shower screen.
Grind to fine..... Finer that salt but not fine black pepper.. If like flower... TOOOOOO FINE.[/edit]
Finally tried grind at 18. Still lumpy coffee but less than 50% at an estimate. Tamped to a similar level, but used less force, probably around 6kg? This time it actually extracted a shot, but the pressure kept rising and in the latter half of extraction water flowed from around the group head.
What is ya Sweet Spot as per the EM6910... Do a search and read http://coffeesnobs.com.au/YaBB.pl?num=1257241858[/edit]
In terms of grind fineness, at 10 the coffee feels like a fine powder. At 18 it feels finer than table salt, maybe the consistency of sand?
Too fine.... At 18 to 20 it may be OK... Fill as per the 5 cent piece test... Use teh search feature...[/edit]
Bear in mind before today I had pulled about eight shots from this machine. I have been using the same model at work (with supermarket pre-ground coffee) for about a year now.
Where am I going wrong?
BEANS... And Assumptions as to ya grinder and Manchine... I think I have posted about 3 times to day about fresh beans.. Ignore the general media and Supermarkets... Read and you will find that many all say the same... But once ya use fresh beans the changer is one of Earth Shattering...[/edit]
Thanks all for any help.