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Restoring my new Old white Coffee Gaggia
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Discussions > Espresso > Espresso Mods > Restoring my new...  
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iko
Senior Member


Joined: 30 Aug 2013
Posts: 47
Location: Toronto
Expertise: Just starting

Posted Mon Sep 23, 2013, 5:52am
Subject: Re: Restoring my new Old white Coffee Gaggia
 

D4F Said:

Bottom of page 2, a bit on hole size and flow at 9 bar.

Click Here (coffeegeek.com)

Posted September 22, 2013 link

Ah, good work there, thanks! Definitely need to make a thermofilter.

D4F Said:

Heat with brew, and why preheat may not be necessary.

http://coffeegeek.com/forums/espresso/machinemods/571792

I use a PID with algorithms and 2 alarm functions.  PID algorithms supply idle/brew temperature, one alarm is able to add heat with/during brew to stop intrashot drop and keep the boiler heated by balancing the heat calories to cold water calories, and the second alarm replaces the steam stat.

http://www.youtube.com/watch?v=sluei1-IkTw

Posted September 22, 2013 link

Ah! Wish I had seen this before doing the copper tubing pre-heater! :D Well... it looks like you solved the problem using the alarm function. Did read a lot of what you guys did before, but somehow I missed this particular discussion. Oh well, it was fun doing that anyway. :)

D4F Said:

From the prior reference on OWC by AndyPanda, it seems that fixing the upright copper tube and cold water intake help.  You may want to consider that if it is not all back and running.  Sounds like a potentially great machine.  You are having fun, and that and great espresso count :)

Posted September 22, 2013 link

The machine's been making coffee Sun morning, so, yes, I'll have to find new motivation to open it up again. The coil makes it a bit more difficult to open up. First I must make a thermofilter so I can properly measure the temperature of the brew water under the right temperature and flow.

But this is a lot of fun for me. The coffee is already very good. Having something to tweak is just bonus!
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iko
Senior Member


Joined: 30 Aug 2013
Posts: 47
Location: Toronto
Expertise: Just starting

Posted Mon Sep 23, 2013, 12:37pm
Subject: Re: Restoring my new Old white Coffee Gaggia
 

Ha, got a piece of guitar string from my friend, will try to make a thermocouple plug with a hole, for one of my spare portafilters (commercial) which has one of those threaded holes that you can attach different spouts.
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SJM
Senior Member


Joined: 17 Nov 2004
Posts: 1,681
Location: CA
Expertise: I love coffee

Espresso: SAMA, Gaggia Classic
Grinder: K-10PB, Rancilio MD-50
Vac Pot: no like
Drip: no like
Roaster: HotTop
Posted Mon Sep 23, 2013, 1:33pm
Subject: Re: Restoring my new Old white Coffee Gaggia
 

Does anyone remember when I opened my FOWC and we had to rename her Old Butterscotch Boiler?

http://coffeegeek.com/forums/espresso/machinemods/300526
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CraigA
Moderator
CraigA
Joined: 19 Dec 2001
Posts: 11,176
Location: Rexdale, Toronto, Ontario, Canada.
Expertise: I live coffee

Espresso: PID/PressureMod 2001...
Grinder: BUNN FPG-2 DBC, Baratza...
Vac Pot: Bodum Santos manual, Yama 5...
Drip: Behmor BraZen, BUNN VPR-APS,...
Roaster: Refurb Behmor 1600, BBQ...
Posted Mon Sep 23, 2013, 2:07pm
Subject: Re: Restoring my new Old white Coffee Gaggia
 

Yep, I remember Susan! {:-o

 
http://twitter.com/CoffeegeekCraig
http://www.facebook.com/craig.andrews.169

Excellent coffee doesn't just happen!
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SJM
Senior Member


Joined: 17 Nov 2004
Posts: 1,681
Location: CA
Expertise: I love coffee

Espresso: SAMA, Gaggia Classic
Grinder: K-10PB, Rancilio MD-50
Vac Pot: no like
Drip: no like
Roaster: HotTop
Posted Mon Sep 23, 2013, 2:15pm
Subject: Re: Restoring my new Old white Coffee Gaggia
 

Oops, apologies for the OT, but....
Of course you do !!!

And now back to your regular programming....
Susan
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CraigA
Moderator
CraigA
Joined: 19 Dec 2001
Posts: 11,176
Location: Rexdale, Toronto, Ontario, Canada.
Expertise: I live coffee

Espresso: PID/PressureMod 2001...
Grinder: BUNN FPG-2 DBC, Baratza...
Vac Pot: Bodum Santos manual, Yama 5...
Drip: Behmor BraZen, BUNN VPR-APS,...
Roaster: Refurb Behmor 1600, BBQ...
Posted Mon Sep 23, 2013, 2:25pm
Subject: Re: Restoring my new Old white Coffee Gaggia
 

SJM Said:

Oops, apologies for the OT, but....
Of course you do !!!

Posted September 23, 2013 link

How is your answer to myself & the thread off topic when you asked the question Susan?, & I really do remember..

And now back to your regular programming....
Susan

Right....

 
http://twitter.com/CoffeegeekCraig
http://www.facebook.com/craig.andrews.169

Excellent coffee doesn't just happen!
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D4F
Senior Member


Joined: 15 Mar 2012
Posts: 1,897
Location: USA
Expertise: I like coffee

Espresso: Gaggia Classic PID
Grinder: Preciso
Posted Mon Sep 23, 2013, 7:33pm
Subject: Re: Restoring my new Old white Coffee Gaggia
 

iko Said:

Ha, got a piece of guitar string from my friend, will try to make a thermocouple plug with a hole, for one of my spare portafilters (commercial) which has one of those threaded holes that you can attach different spouts.

Posted September 23, 2013 link

Remember that the PF does not matter much, the basket is the pressure trap and the PF holds the basket.  A bottomless PF is easy because the bottom and spouts just get in the way, though that is what I have.

There is also a thermofilter thread from DeanOK where he used high temp silicone to act as the puck.  Lots of ideas and fun :)

 
D4F also at
http://www.gaggiausersgroup.com/
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D4F
Senior Member


Joined: 15 Mar 2012
Posts: 1,897
Location: USA
Expertise: I like coffee

Espresso: Gaggia Classic PID
Grinder: Preciso
Posted Mon Sep 23, 2013, 7:38pm
Subject: Re: Restoring my new Old white Coffee Gaggia
 

SJM Said:

Does anyone remember when I opened my FOWC and we had to rename her Old Butterscotch Boiler?

http://coffeegeek.com/forums/espresso/machinemods/300526

Posted September 23, 2013 link

Nice to see you back and helping Susan.  The thread was before my time, but I remember it as I read many of the old Gaggia threads.

Fred

 
D4F also at
http://www.gaggiausersgroup.com/
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iko
Senior Member


Joined: 30 Aug 2013
Posts: 47
Location: Toronto
Expertise: Just starting

Posted Mon Sep 23, 2013, 8:02pm
Subject: Re: Restoring my new Old white Coffee Gaggia
 

Susan, that's horrible!

Turns out I got motivated to open up my boiler again. Wasn't as difficult as I thought, since I made the coil so I still have access to things. Just had to be careful. Plugged the hole at the bottom of the copper pipe. Can't understand why in only two weeks the aluminum side of the boiler has already gotten a layer of stuff on it (scale?). Nothing on the lower part made of brass. And I didn't even make a lot of coffee. I might have to filter the water.

Thanks for the tip on high temp silicone. I have some and will try that first, as it's quick. But not tonight...
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D4F
Senior Member


Joined: 15 Mar 2012
Posts: 1,897
Location: USA
Expertise: I like coffee

Espresso: Gaggia Classic PID
Grinder: Preciso
Posted Mon Sep 23, 2013, 8:13pm
Subject: Re: Restoring my new Old white Coffee Gaggia
 

Good decision on disassemble and the cold water hole.

iko Said:

Turns out I got motivated to open up my boiler again. Wasn't as difficult as I thought, since I made the coil so I still have access to things. Just had to be careful. Plugged the hole at the bottom of the copper pipe. Can't understand why in only two weeks the aluminum side of the boiler has already gotten a layer of stuff on it (scale?). Nothing on the lower part made of brass. And I didn't even make a lot of coffee. I might have to filter the water.

Posted September 23, 2013 link

Do you have hard water, or could it be very slightly acidic.  Hard water will obviously scale over time.  Acid water is not good for the aluminum, though it seems fine for descale and flush. IIRC scrubbed clean aluminum form a protective coating.

http://coffeegeek.com/forums/espresso/machines/479773

 
D4F also at
http://www.gaggiausersgroup.com/
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