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Bezzera owners thread
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Discussions > Espresso > Machines > Bezzera owners...  
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smico
Senior Member


Joined: 2 Feb 2010
Posts: 46
Location: Montreal
Expertise: I love coffee

Espresso: Brewtus IIIR, Olympia...
Grinder: Vario, Pharos
Vac Pot: Yama
Drip: Brazen
Roaster: Hottop B2 + HTC
Posted Sat May 11, 2013, 6:56am
Subject: Re: Bezzera owners thread
 

And here is rubber band on the basket...

smico: B_basket2.jpg
(Click for larger image)
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IB
Senior Member
IB
Joined: 24 Jan 2011
Posts: 59
Location: pittsburgh
Expertise: I like coffee

Espresso: Kim Lever, Bezzera BZ07
Grinder: Vario
Posted Sat May 11, 2013, 12:36pm
Subject: Re: Bezzera owners thread
 

smico Said:

Friend of mine owns brand new BZ-07 and Baratza Vario, but he has major issue with overflow.  
I tried to help out, and I have noticed that when we use blind basket for backflush there was no leak.  That was confirmation that gasket is ok.
Then I noticed two cuts on portafilter that I have never seen before

Posted May 11, 2013 link

The following suggestions might seem kind of obvious...but - make sure there is some extra headspace above the puck, a good quarter of an inch or a bit more. Then just crank the handle on tighter - it may need to rest a bit beyond the midline.  
I have seen the two notches on the rim of PF with some brands, but many don't have it.  Mine does and it doesn't leak. See the link below, just as an example...folks have discussed the notches on other brands as a problem when trying to create a pressure gauge by screwing one on to the bottom of the PF.


http://coffeegeek.com/forums/espresso/machines/211152
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smico
Senior Member


Joined: 2 Feb 2010
Posts: 46
Location: Montreal
Expertise: I love coffee

Espresso: Brewtus IIIR, Olympia...
Grinder: Vario, Pharos
Vac Pot: Yama
Drip: Brazen
Roaster: Hottop B2 + HTC
Posted Sat May 11, 2013, 1:06pm
Subject: Re: Bezzera owners thread
 

Thank you for the link IB.
They have to keep portafilter tight like crazy throughout extraction, otherwise it would wiggle out.
I have Brewtus III myself, and never had such problems except when I bough naked portafilter from Rancillio.
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IB
Senior Member
IB
Joined: 24 Jan 2011
Posts: 59
Location: pittsburgh
Expertise: I like coffee

Espresso: Kim Lever, Bezzera BZ07
Grinder: Vario
Posted Sat May 11, 2013, 2:26pm
Subject: Re: Bezzera owners thread
 

I think that might have happened t me once or twice, where the PF became loose during extraction.  Again, I would make sure they are leaving some extra headspace above the puck,
and of course that the grind setting is not too fine so as to create too much back-pressure -  I am assuming they are getting close to normal extraction flow/timing?
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smico
Senior Member


Joined: 2 Feb 2010
Posts: 46
Location: Montreal
Expertise: I love coffee

Espresso: Brewtus IIIR, Olympia...
Grinder: Vario, Pharos
Vac Pot: Yama
Drip: Brazen
Roaster: Hottop B2 + HTC
Posted Sat May 11, 2013, 2:46pm
Subject: Re: Bezzera owners thread
 

At time I tried, I adjusted grind to get 14 grams of coffee, 25 seconds, 25 ml of coffee.  
They have to keep portafilter in place, and most of the times water overflows.  
He bough Synesso double basket and this a brand new machine.
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IB
Senior Member
IB
Joined: 24 Jan 2011
Posts: 59
Location: pittsburgh
Expertise: I like coffee

Espresso: Kim Lever, Bezzera BZ07
Grinder: Vario
Posted Sat May 11, 2013, 3:51pm
Subject: Re: Bezzera owners thread
 

did they try the basket which came with the machine?
and - sorry to repeat myself, but - this machine needs more headspace than many others - so
where you leaving plenty of space above the puck??
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smico
Senior Member


Joined: 2 Feb 2010
Posts: 46
Location: Montreal
Expertise: I love coffee

Espresso: Brewtus IIIR, Olympia...
Grinder: Vario, Pharos
Vac Pot: Yama
Drip: Brazen
Roaster: Hottop B2 + HTC
Posted Sat May 11, 2013, 4:03pm
Subject: Re: Bezzera owners thread
 

They used original for a few months, but I found here that people suggest that basket...
I will tell them about the headspace, thank you for the suggestion.
How much coffee do you use for the shots?
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IB
Senior Member
IB
Joined: 24 Jan 2011
Posts: 59
Location: pittsburgh
Expertise: I like coffee

Espresso: Kim Lever, Bezzera BZ07
Grinder: Vario
Posted Sat May 11, 2013, 6:03pm
Subject: Re: Bezzera owners thread
 

smico Said:

They used original for a few months,

Posted May 11, 2013 link


Did they get leaking with that one?  

smico Said:

I will tell them about the headspace, thank you for the suggestion.

Posted May 11, 2013 link

Aim for at least a 1/4 inch  - when i tamp, if  the top edge of the tamper lines up with the top of the basket, then there is enough headspace. of course there is variation in the thickness of
a tamper base, but you get the idea.

smico Said:

How much coffee do you use for the shots?

Posted May 11, 2013 link

I have a bottomless and I use a triple basket. I also have the vario grinder, and rather than ever measuring by weight I have just dialed in a time and setting that results in the headspace I mention above, while giving me
a shot with a nice flow rate, which blonds at about 1.75 ounces (sorry for all the non-metric measurements!) and tastes good to me.
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smico
Senior Member


Joined: 2 Feb 2010
Posts: 46
Location: Montreal
Expertise: I love coffee

Espresso: Brewtus IIIR, Olympia...
Grinder: Vario, Pharos
Vac Pot: Yama
Drip: Brazen
Roaster: Hottop B2 + HTC
Posted Sun May 12, 2013, 6:09am
Subject: Re: Bezzera owners thread
 

This is ongoing saga...  It has been leaking from the day one with any basket except blind basket for backflush. I had troubles adjusting OPV because of the overflow.

I will pass all the messages IB.  They also have Vario.


Last question: where did you buy bottomless?

Found one in Canada (preferable):In Canada
Has anyone tried this one yet?

Found one in US:In the US
But member reports here that it does not fit his BZ07:Does not fit on BZ07

Thank you for all the info and advices IB.

Miroslav
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dyqik
Senior Member


Joined: 7 Oct 2011
Posts: 383
Location: Cambridge, MA
Expertise: I love coffee

Espresso: Bezzera BZ07 PM
Grinder: Baratza Virtuoso Preciso...
Vac Pot: Cona D
Drip: Bona-Vita, CCD, Aeropress.
Roaster: Gene Cafe, Modded Poppers
Posted Mon May 13, 2013, 9:07am
Subject: Re: Bezzera owners thread
 

The slots in the PF cannot be causing this problem - they should not be seeing any pressure, as the pressure is all held by the basket and puck, while the outside of the basket is not under pressure.

I do also have problems stopping small leaks around the group gasket on my BZ07, particularly with the stock double basket (in either the stock or my naked PF).  You need a lot more force than you would think to tighten the PF into the group, and I think there might be a small issue with the basket interfering with the shower screen.  You also need to keep the group gasket as clean as possible, and replace it regularly.  I think this is less of an issue with my triple basket that came with the naked PF.
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