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Zaffiro thermostat upgrade
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Discussions > Espresso > Machines > Zaffiro...  
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bolojm
Senior Member
bolojm
Joined: 11 Jun 2004
Posts: 422
Location: Indianapolis, IN
Expertise: I love coffee

Espresso: Isomac Amica (PIDed)
Grinder: Mazzer Mini
Vac Pot: none
Drip: French Press, on occasion
Roaster: I-roast, unassembled SC/CO
Posted Tue Dec 20, 2005, 7:47am
Subject: Re: Zaffiro thermostat upgrade
 

You won't be sorry. Adjusting the temperature with the PID is great...and as long as you aren't pulling many shots quickly, your shouldn't have issues with the E61 overheating. I've had nothing but luck with my setup.

By the way, I sent my old thermostat to Mark Prince (the "new improved" one used in the current machines) and he said that it looks beefier and more reliable than the old one, but it still suffers from the 10 degree deadband issue.
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DanLicks
Senior Member
DanLicks
Joined: 9 Oct 2004
Posts: 32
Location: Vienna, Austria
Expertise: I love coffee

Espresso: Zaffiro
Grinder: Solis 166 (tweaked)
Drip: NEVER!
Posted Mon Jan 9, 2006, 5:42am
Subject: Re: Zaffiro thermostat upgrade
 

I have put in the minco controler in my Zaff. Works great. Big improvement. Heats for 18 seconds, rests for 2:45. Boiler temp stays within +/- 1.8C (compared to +/- 8 from before!). The controler itsself is very quick and accurate. The real issue is that the boiler and heating elements are so big that even when the minco shuts off after 0.5 of heating, there is still about 3 of overshoot. My thermometer is shot so I can't give you and brewhead readings, but my guess is that they are within the +/- .7C range. I can dial in the temp from the top to within 1/10 with a little set knob from an old alarm clock.
I think the Minco would work really well in a smaller machine. For something as "big" as a Zaff, if one really wants to be exact, then PID would be the way to go, but I feel that the Minco is easily good enough for us "normal" users. So far I have not missed a shot, which says a lot for a stock Zaffiro.
More later when I get a new theromometer.
Dan


LATER:
Here are a few measurements on a warmed up idle machine:

 minco temp diagram.xls
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DanLicks
Senior Member
DanLicks
Joined: 9 Oct 2004
Posts: 32
Location: Vienna, Austria
Expertise: I love coffee

Espresso: Zaffiro
Grinder: Solis 166 (tweaked)
Drip: NEVER!
Posted Sat Feb 4, 2006, 3:22pm
Subject: Re: Zaffiro thermostat upgrade
 

and in comparison to the standard P.O.S. Prodogy t-stat...

DanLicks: MINCO ZAFF.gif
(Click for larger image)
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dookie
Senior Member


Joined: 8 Jan 2004
Posts: 4
Location: .
Expertise: I love coffee

Espresso: zaffiro
Grinder: vario
Vac Pot: press
Drip: generic
Roaster: counter culture
Posted Tue Oct 19, 2010, 6:05am
Subject: Re: Zaffiro thermostat upgrade
 

back from the dead, big time...i know.  i can't seem to find the personal message/email link, or i'd have contacted dan directly...

i would greatly appreciate any pointers on minco parts sourcing.  a bit of googling has me scratching my head.  also, is there a PID 'kit' for the Z available from anyone, or is it still a homebrew arrangement?

my Z is dead...no heat.  still trying to pin it down exactly (both thermofuses have continuity, as does the t-stat, 8ohms across the heater terminals)...but while i have the machine open, i'd like to do a little maintenance/tweaking.  pump replacement (7 year old CEME!), pipe insulation, better t-stat, more reliable thermofuses, etc.

any suggestions?
thx.
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JGG
Senior Member
JGG
Joined: 31 Mar 2006
Posts: 1,377
Location: Kentucky, US
Expertise: I like coffee

Espresso: PID Silvia; PID Alexia
Grinder: Mazzer SJ
Roaster: Hottop D w/HTC+TC4C
Posted Tue Oct 19, 2010, 6:54am
Subject: Re: Zaffiro thermostat upgrade
 

dookie Said:

also, is there a PID 'kit' for the Z available from anyone, or is it still a homebrew arrangement?

Posted October 19, 2010 link

This kit from Chris Coffee is for the Alexia, but can probably be used with nothing more than minor modifications on the Zaffiro.  This assumes that your Zaff's boiler has a 6mm thermowell currently containing the bulb for a capillary thermostat.  It also assumes you can find places to mount the PID controller and the SSR inside the machine.

(Disclosure:  my company builds and sells those kits to Chris Coffee).

Jim
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MarshallF
Senior Member
MarshallF
Joined: 1 Jun 2003
Posts: 810
Location: Los Angeles
Expertise: Professional

Espresso: LM GS/3 MP
Grinder: Mahlkonig ProM; Baratza...
Vac Pot: Hario Nouveau, Bodum ESantos
Drip: Clever Dripper
Posted Tue Oct 19, 2010, 1:35pm
Subject: Re: Zaffiro thermostat upgrade
 

dookie Said:

my Z is dead...no heat.  still trying to pin it down exactly (both thermofuses have continuity, as does the t-stat, 8ohms across the heater terminals)...but while i have the machine open, i'd like to do a little maintenance/tweaking.  pump replacement (7 year old CEME!), pipe insulation, better t-stat, more reliable thermofuses, etc.

Posted October 19, 2010 link

Probably time to open up the boiler. It may be coated with limescale and have a dead heating element. I'm a former Zaffiro owner. My machine had a deluxe PID upgrade: Bionic Zaffiro.
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dookie
Senior Member


Joined: 8 Jan 2004
Posts: 4
Location: .
Expertise: I love coffee

Espresso: zaffiro
Grinder: vario
Vac Pot: press
Drip: generic
Roaster: counter culture
Posted Wed Oct 20, 2010, 2:01pm
Subject: Re: Zaffiro thermostat upgrade
 

MarshallF Said:

Probably time to open up the boiler. It may be coated with limescale and have a dead heating element. I'm a former Zaffiro owner. My machine had a deluxe PID upgrade: Bionic Zaffiro.

Posted October 19, 2010 link

really?  even with continuity & 8ohms resistance across the coil terminals?
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MarshallF
Senior Member
MarshallF
Joined: 1 Jun 2003
Posts: 810
Location: Los Angeles
Expertise: Professional

Espresso: LM GS/3 MP
Grinder: Mahlkonig ProM; Baratza...
Vac Pot: Hario Nouveau, Bodum ESantos
Drip: Clever Dripper
Posted Thu Oct 21, 2010, 4:51pm
Subject: Re: Zaffiro thermostat upgrade
 

dookie Said:

really?  even with continuity & 8ohms resistance across the coil terminals?

Posted October 20, 2010 link

Wait, you've been running simultaneous threads here and on H-B. I never would have suggested the scale issue (although it could also be happening), if you'd posted the photo of the burnt connector here. Please avoid wasting people's time with duplicate threads.
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dookie
Senior Member


Joined: 8 Jan 2004
Posts: 4
Location: .
Expertise: I love coffee

Espresso: zaffiro
Grinder: vario
Vac Pot: press
Drip: generic
Roaster: counter culture
Posted Thu Oct 21, 2010, 5:25pm
Subject: Re: Zaffiro thermostat upgrade
 

Wait...asking the same question on two completely unaffiliated forums is wasting peoples' time?

Sorry to have bothered you. Send me a bill.

I'm just trying to get my machine back up and running. God forbid it cost anyone the time it takes to read this. I mean, we all have our priorities, eh?
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Endo
Senior Member
Endo
Joined: 26 Jun 2008
Posts: 804
Location: , location, location.
Expertise: I love coffee

Espresso: machine is < important than...
Grinder: !
Posted Thu Oct 21, 2010, 7:01pm
Subject: Re: Zaffiro thermostat upgrade
 

MarshallF Said:

Wait, you've been running simultaneous threads here and on H-B. I never would have suggested the scale issue (although it could also be happening), if you'd posted the photo of the burnt connector here. Please avoid wasting people's time with duplicate threads.

Posted October 21, 2010 link

I wish the "cross posting police" would stop wasting my time. I don't read H-B.
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