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Gran Gaggia
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Discussions > Espresso > Espresso Mods > Gran Gaggia  
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D4F
Senior Member


Joined: 15 Mar 2012
Posts: 2,021
Location: USA
Expertise: I like coffee

Espresso: Gaggia Classic PID
Grinder: Baratza Forte-AP
Posted Tue Jul 30, 2013, 2:41pm
Subject: Re: Gran Gaggia
 

It sounds like you will need some help.  I am happy to do that but would like to know what you have for supplies, equipment and skills.  

How will you make wiring?  What gauge?  Solder or crimp?

What wire ends/terminals do you have?

Do you have a Digital Multi Meter or DMM?

If you have not done so, you may wish to start at page 17

Click Here (coffeegeek.com)

The first pages are how and why PID, the last are supplies and how to.

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


Joined: 12 Jul 2013
Posts: 8
Location: Sungai Buloh
Expertise: I live coffee

Posted Sun Aug 4, 2013, 9:39am
Subject: Re: Gran Gaggia
 

]sorry my laptop broke down for a couple of days.
err here is what i have to work with.
i have basic wiring skills, noting fancy.
i have wire cutters, speaker wiring, screw drivers. thats about it.
for wire ends, i normally just tie them around the screw and screw it into ssr and pid.
i do not have a ddm
Click Here (i1232.photobucket.com)
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D4F
Senior Member


Joined: 15 Mar 2012
Posts: 2,021
Location: USA
Expertise: I like coffee

Espresso: Gaggia Classic PID
Grinder: Baratza Forte-AP
Posted Sun Aug 4, 2013, 1:09pm
Subject: Re: Gran Gaggia
 

You will need to make up something like this wiring.

http://www.flickr.com/photos/81832954%40N00/2330218796

Note the spade ends, male and female.  You will likely need those connectors and "piggyback" spade connectors to make the connections in the machine.  Screw in fittings at the PID and SSR is normal, but not in the machine.  Speaker wire is adequate, possible, but not desirable.  Most is not high temperature rated, 105C.  It will not necessarily melt in the machine, but has some risk.  You will need to route the wires where they cannot contact the boiler.  There are many appliance and lamp wires that ate 105C rated.  How to connect wires to spades???

You will need current carrying load wire from the SSR to the boiler heater wires.  In US that is 14 awg and high temperature rated, not speaker wire.

DMM is not required but allows you to check your work before you turn it on.

I suggest that you read the PID thread carefully starting page 17 about supplies and install before you proceed.  

Click Here (coffeegeek.com)

There are suggestions such as hobby shops and hardware stores where supplies are found. I recognize that you may have to adjust the specific supply shops for your area.  

Ask questions if you need help, good luck.

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


Joined: 12 Jul 2013
Posts: 8
Location: Sungai Buloh
Expertise: I live coffee

Posted Mon Aug 5, 2013, 3:19pm
Subject: Re: Gran Gaggia
 

after i remove the thermostat would i need to fill the hole with s screw? with a thermocouple tip, how do you guys attach it to the machine?
Click Here (img.directindustry.com)
im using the same thermocouple after removing the tip of the thermocouple that was way to big to fit the initial hole in the boiler from the thermocouple
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D4F
Senior Member


Joined: 15 Mar 2012
Posts: 2,021
Location: USA
Expertise: I like coffee

Espresso: Gaggia Classic PID
Grinder: Baratza Forte-AP
Posted Mon Aug 5, 2013, 6:58pm
Subject: Re: Gran Gaggia
 

See post on bottom of page 1.  You have essentially the thermocouples similar to the e-bay ones noted.  The fancy way to attach is to use a lathe and put an appropriate hole in a M4-0.7 bolt.  The more realistic way is to find a M4-0.7 bolt or screw and a washer and thread into the tstat hole and use the washer to lightly clamp the thermocouple bead in place with thermopaste or heat transfer compound. You could back out the tstat and use it as the clamp to hold the thermocouple bead against the boiler.  Again, paste.  The connecting wires will be removed from the tstat and controlled by the PID via SSR, so the tstat would just act as a bolt.  The stud on the tstat is brass, do not over tighten, finger tight, or you can twist off the stud.  Hope that helps.

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