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LaSpaziale Dream T observations and questions
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goodboyr
Senior Member


Joined: 11 Dec 2012
Posts: 4
Location: Canada
Expertise: Just starting

Posted Sun Jan 19, 2014, 8:38am
Subject: Re: LaSpaziale Dream T observations and questions
 

The symptom you describe is quite similar to something that is normal on these machines. When the steam boiler level sensor kicks in and initiates a refill, if that happens to be coincident with you pulling a shot, then the pressure will drop as you describe. It's because the pump now has two flow paths for output, the brew boiler and the steam boiler. It only lasts a few seconds (only as long as it takes to do a steam boiler autofill top up), and it should be a rare occurrence since they have to be coincident.

Here is the discussion of this on s1cafe:

click here
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Pantea
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Pantea
Joined: 11 Sep 2005
Posts: 37
Location: Denver
Expertise: I love coffee

Espresso: LaSpaziale Dream T; Breville...
Grinder: Baratza Vario & Preciso
Drip: Bonavita
Posted Sun Jan 19, 2014, 3:51pm
Subject: Re: LaSpaziale Dream T observations and questions
 

goodboyr Said:

The symptom you describe is quite similar to something that is normal on these machines. When the steam boiler level sensor kicks in and initiates a refill, if that happens to be coincident with you pulling a shot, then the pressure will drop as you describe. It's because the pump now has two flow paths for output, the brew boiler and the steam boiler. It only lasts a few seconds (only as long as it takes to do a steam boiler autofill top up), and it should be a rare occurrence since they have to be coincident.

Here is the discussion of this on s1cafe:

click here

Posted January 19, 2014 link

interesting.  That thread on s1cafe was helpful.  I always steam milk first and then pull a shot.  Would the steam boiler decide to fill even though I'm not drawing any steam or hot water from it, after it's been sitting idle for several seconds, and several seconds into pulling a shot?
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goodboyr
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Joined: 11 Dec 2012
Posts: 4
Location: Canada
Expertise: Just starting

Posted Mon Jan 20, 2014, 7:50am
Subject: Re: LaSpaziale Dream T observations and questions
 

Yes. It operates based on a level sensor which can initiate the fill at any time. And I've seen exactly this behaviour. You pull some steam and the autofill may initiate after you've closed off the steam wand. Try to pull the shot first, and then do the steam. Or do them both at the same time. That might change the timing. It does happen to me occasionally, but has no bearing on the shot quality that I can discern. Just the nature of the beast!
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boar_d_laze
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Joined: 21 Nov 2006
Posts: 1,397
Location: Monrovia, CA
Expertise: I live coffee

Espresso: La Cimbali M21 DT/1 Junior...
Grinder: Ceado E92; "Bunnzilla"
Vac Pot: Royal Coffee Maker
Drip: Chemex + Kone; Espro Press
Roaster: USRC Sample Roaster
Posted Mon Jan 20, 2014, 8:18am
Subject: Re: LaSpaziale Dream T observations and questions
 

goodboyr Said:

Pull the shot first, and then do the steam.

Posted January 20, 2014 link

You'll make a better drink that way as well.

BDL
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Pantea
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Pantea
Joined: 11 Sep 2005
Posts: 37
Location: Denver
Expertise: I love coffee

Espresso: LaSpaziale Dream T; Breville...
Grinder: Baratza Vario & Preciso
Drip: Bonavita
Posted Mon Jan 20, 2014, 12:42pm
Subject: Re: LaSpaziale Dream T observations and questions
 

goodboyr Said:

Yes. It operates based on a level sensor which can initiate the fill at any time. And I've seen exactly this behaviour. You pull some steam and the autofill may initiate after you've closed off the steam wand. Try to pull the shot first, and then do the steam. Or do them both at the same time. That might change the timing. It does happen to me occasionally, but has no bearing on the shot quality that I can discern. Just the nature of the beast!

Posted January 20, 2014 link

Thanks, I will try that.  I have not noticed a difference in shot quality either.
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Pantea
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Pantea
Joined: 11 Sep 2005
Posts: 37
Location: Denver
Expertise: I love coffee

Espresso: LaSpaziale Dream T; Breville...
Grinder: Baratza Vario & Preciso
Drip: Bonavita
Posted Mon Jan 20, 2014, 12:45pm
Subject: Re: LaSpaziale Dream T observations and questions
 

boar_d_laze Said:

You'll make a better drink that way as well.

BDL

Posted January 20, 2014 link

I would have never guessed this.  Good to know.  I thought it was more important not to leave the espresso waiting for milk, though I admit it's not much waiting given the steaming speed.  Now that my interface board works, I'll put in my volumetiric programming so I can pull the shot and steam milk at the same time without having to watch the shot clock.
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Bogiesan
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Joined: 1 Jan 2002
Posts: 43
Location: boise Idaho, usa
Expertise: I live coffee

Espresso: Salvatore Famosa c.2000
Grinder: Rancilio M40
Posted Tue Jan 21, 2014, 5:32am
Subject: Re: LaSpaziale Dream T observations and questions
 

Pantea Said:

I would have never guessed this.  Good to know.  I thought it was more important not to leave the espresso waiting for milk, though I admit it's not much waiting given the steaming speed.  Now that my interface board works, I'll put in my volumetiric programming so I can pull the shot and steam milk at the same time without having to watch the shot clock.

Posted January 20, 2014 link

Over on Espresso My Espresso, Randy's thorough steaming/frothing/stretching lecture includes practical advice, based on the physics of hot milk, that I hadn't fully considered. Pull your shot first. The espresso crema is more stable than your microfoam. Assuming it takes 10-30 seconds to process a given volume of milk, you should still have plenty of crema to make a lovely design. If you foam the milk first, you're as many as 90 seconds away from assembling the drink; the foam will break and the milk will separate.  

Fascinating journey you've been on. I'll need to start at the beginning again to see the events in perspective.

 
I play go. I use Macintosh,. Of course I ride a recumbent.
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calblacksmith
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calblacksmith
Joined: 25 Nov 2007
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Location: Riverside, Ca, U.S.A.
Expertise: I live coffee

Espresso: ECM Vene. A1, La Cimbali M32
Grinder: Azkoyen Capriccio, Major
Vac Pot: 40s era Silex
Drip: Msl. Com. brewers
Roaster: gave it a try, decided no
Posted Tue Jan 21, 2014, 5:51am
Subject: Re: LaSpaziale Dream T observations and questions
 

Pantea Said:

I would have never guessed this.  Good to know.  I thought it was more important not to leave the espresso waiting for milk, though I admit it's not much waiting given the steaming speed.  Now that my interface board works, I'll put in my volumetiric programming so I can pull the shot and steam milk at the same time without having to watch the shot clock.

Posted January 20, 2014 link

That is one of the reasons you get a machine with volumetric dosing.
After you do it a few times, pulling the shots and steaming at the same time becomes the normal way to do it and for me at least, it is much less "fun" to do one then the other, regardless of which you do first, besides, there is no reason to do one then the other when you can do both at the same time.

Yes, the auto fill of the boiler (s) can happen at any time regardless of if you are using steam or not.

 
In real life, my name is
Wayne P.
Anything I post is personal opinion and is only worth as much as anyone else's personal opinion. YMMV!

Feed the newbs, starve the trolls and above all enjoy what you drink!
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jwoodyu
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jwoodyu
Joined: 31 Dec 2010
Posts: 857
Location: Michigan
Expertise: I live coffee

Espresso: Allex Duetto II
Grinder: Mazzer Major
Posted Tue Jan 21, 2014, 6:32am
Subject: Re: LaSpaziale Dream T observations and questions
 

calblacksmith Said:

That is one of the reasons you get a machine with volumetric dosing.

Posted January 21, 2014 link

Not having volumetric dosing does not preclude steaming and pulling at the same time, however. :)

 
Yes i have a reason for leaving SCG off my list, yes it is my opinion, yes it is subjective as opinions are by definition, no don't start a flame war because you disagree.
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calblacksmith
Moderator
calblacksmith
Joined: 25 Nov 2007
Posts: 7,949
Location: Riverside, Ca, U.S.A.
Expertise: I live coffee

Espresso: ECM Vene. A1, La Cimbali M32
Grinder: Azkoyen Capriccio, Major
Vac Pot: 40s era Silex
Drip: Msl. Com. brewers
Roaster: gave it a try, decided no
Posted Tue Jan 21, 2014, 6:40am
Subject: Re: LaSpaziale Dream T observations and questions
 

You are perfectly correct. It is just one thing that you can pay a little less attention to while doing other things :D

 
In real life, my name is
Wayne P.
Anything I post is personal opinion and is only worth as much as anyone else's personal opinion. YMMV!

Feed the newbs, starve the trolls and above all enjoy what you drink!
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