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La Nuova Era Cuadra Owners Thread
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SStones
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SStones
Joined: 24 Nov 2012
Posts: 477
Location: Canada
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Espresso: Giga 5, ECM Giotto, Rocket...
Grinder: Anfim Milano-Best
Vac Pot: No  :(
Drip: Some $30 thing from Walmart
Roaster: I buy pre-roasted.
Posted Tue Apr 30, 2013, 6:29pm
Subject: Re: La Nuova Era Cuadra Owners Thread
 

Okay...
Instead of using the brew lever to make it come back to life, tomorrow morning when it stops at too low a temp, just thump it a couple of times, doesn't have to be hard. If the vibration of your pump is enough to get the relay to make contact, a little thump should do the trick.

If this works, plan to be replacing the relay soon.
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MDiddy
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Joined: 3 Oct 2012
Posts: 118
Location: PA
Expertise: I live coffee

Espresso: ECM Technika IV Profi
Grinder: Baratza Forte AP
Drip: Cuisinart DCC-1200
Posted Tue Apr 30, 2013, 9:48pm
Subject: Re: La Nuova Era Cuadra Owners Thread
 

SStones Said:

Okay...
Instead of using the brew lever to make it come back to life, tomorrow morning when it stops at too low a temp, just thump it a couple of times, doesn't have to be hard. If the vibration of your pump is enough to get the relay to make contact, a little thump should do the trick.

If this works, plan to be replacing the relay soon.

Posted April 30, 2013 link

I'll be dammed.   That did it.

Turned the machine on tonight,  stalled at 140 F,  gave it a couple thumps on the side,  and the temp started climbing again.   Stopped again around 180 F,  another few taps,  and up again it went.  

Looks like it is the relay.   Only thing is,  which part is it i need to replace?   Is it on the diagram Sly posted?

Thanks so much for the help!
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SStones
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SStones
Joined: 24 Nov 2012
Posts: 477
Location: Canada
Expertise: Professional

Espresso: Giga 5, ECM Giotto, Rocket...
Grinder: Anfim Milano-Best
Vac Pot: No  :(
Drip: Some $30 thing from Walmart
Roaster: I buy pre-roasted.
Posted Wed May 1, 2013, 4:18am
Subject: Re: La Nuova Era Cuadra Owners Thread
 

Tiny green circuit board with 4 wires connected to it, a small resistor and a plastic box with electrical contacts inside.  It will either be riding on your Pressostat if your machine is many years old, or it will be inside the left wall of the machine, mounted to the frame.
Now that it is dying, consider replacing it with a much better, solid-state relay once, rather than having to replace it with its own kin every year.
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Iluvdabean
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Iluvdabean
Joined: 7 Mar 2005
Posts: 1,260
Location: Kentucky
Expertise: I love coffee

Espresso: La Nuova Era Cuadra/Gaggia...
Grinder: Baratza Preciso/K-A Pro...
Drip: Bonavita BV 1800 TH
Roaster: Nesco 1010/Behmor 1600
Posted Wed May 1, 2013, 5:56am
Subject: Re: La Nuova Era Cuadra Owners Thread
 

That is one of the beautiful aspects of machines that are mainstream they can be diagnosed and repaired when needed.Excellent job SStone.
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888RP
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Joined: 5 Mar 2013
Posts: 39
Location: Toronto
Expertise: I like coffee

Espresso: Cuadra
Grinder: Vario
Posted Wed May 1, 2013, 5:59am
Subject: Re: La Nuova Era Cuadra Owners Thread
 

Mdiddy - if you decide to do this and have the time i'd really appreciate it if you took pics of the install... i'd like to replace the relay with a solid state on my machine but have no idea how to do it... to be honest i don't know what type of relay i'm even looking for. is this it: https://www.sparkfun.com/products/10636

thanks!
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slybarman
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slybarman
Joined: 3 Nov 2011
Posts: 366
Location: usa
Expertise: I love coffee

Espresso: La Nuova Era Cuadra
Grinder: Baratza Vario
Posted Wed May 1, 2013, 6:23am
Subject: Re: La Nuova Era Cuadra Owners Thread
 

Photo of relay location. It is the entire unit the arrow points to. You disconnect the three connections, pull the board and reconnect the new one. You only need to remove the one machine side panel (the one with the on/off switch).

slybarman: relay.jpg
(Click for larger image)
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pfn
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Joined: 1 Apr 2013
Posts: 64
Location: Santa Clara, CA, US
Expertise: I like coffee

Espresso: La Nuova Era Cuadra II
Grinder: KA Proline w/ Mazzer Mini...
Posted Wed May 1, 2013, 6:27am
Subject: Re: La Nuova Era Cuadra Owners Thread
 

888RP Said:

Mdiddy - if you decide to do this and have the time i'd really appreciate it if you took pics of the install... i'd like to replace the relay with a solid state on my machine but have no idea how to do it... to be honest i don't know what type of relay i'm even looking for. is this it: https://www.sparkfun.com/products/10636

thanks!

Posted May 1, 2013 link

Biggest problem with solid state relays is that they switch off of DC voltage, so you'd need a rectifier to convert AC in the machine into DC; my EE know-how isn't good enough to make a decent solution. That part in particular isn't rated high enough to run in an espresso machine, it should have a minimum current rating of 15A.
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SStones
Senior Member
SStones
Joined: 24 Nov 2012
Posts: 477
Location: Canada
Expertise: Professional

Espresso: Giga 5, ECM Giotto, Rocket...
Grinder: Anfim Milano-Best
Vac Pot: No  :(
Drip: Some $30 thing from Walmart
Roaster: I buy pre-roasted.
Posted Thu May 2, 2013, 6:50pm
Subject: Re: La Nuova Era Cuadra Owners Thread
 

That:   https://www.sparkfun.com/products/10636
is not the right thing. Sorry.

You'd need to get a bigger relay to be sure it will be reliable. No sense in installing another that will need replacing every few years. You can get a decent Omron one that is designed to operate on the 120VAC that your machine is already providing through the pressostat...
If I can find pictures of an install and a  part number I will post further after the weekend.
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888RP
Senior Member


Joined: 5 Mar 2013
Posts: 39
Location: Toronto
Expertise: I like coffee

Espresso: Cuadra
Grinder: Vario
Posted Thu May 2, 2013, 7:18pm
Subject: Re: La Nuova Era Cuadra Owners Thread
 

thanks slybar/Stones.

pics/install would be super helpful!

thanks again for taking the time to help out -- much appreciated
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MDiddy
Senior Member


Joined: 3 Oct 2012
Posts: 118
Location: PA
Expertise: I live coffee

Espresso: ECM Technika IV Profi
Grinder: Baratza Forte AP
Drip: Cuisinart DCC-1200
Posted Thu May 2, 2013, 7:40pm
Subject: Re: La Nuova Era Cuadra Owners Thread
 

SStones Said:

That:   https://www.sparkfun.com/products/10636
is not the right thing. Sorry.

You'd need to get a bigger relay to be sure it will be reliable. No sense in installing another that will need replacing every few years. You can get a decent Omron one that is designed to operate on the 120VAC that your machine is already providing through the pressostat...
If I can find pictures of an install and a  part number I will post further after the weekend.

Posted May 2, 2013 link

That'd be awesome.

Jim is sending our a replacement for my faulty one but I would love to replace it with something more reliable down the line if it's not too complicated.
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