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La Nuova Era Cuadra Owners Thread
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1stline
Senior Member
1stline
Joined: 24 Jan 2002
Posts: 492
Location: Freehold, NJ USA
Expertise: Professional

Espresso: Undisclosed
Grinder: Indisclosed
Vac Pot: Bodum Electric
Drip: None
Roaster: None
Posted Fri Oct 4, 2013, 3:03pm
Subject: Re: La Nuova Era Cuadra Owners Thread
 

SStones Said:

...
If it is seriously not in there, anywhere, someone may have removed it to either run the element directly off of the pressostat or to replace it with a better relay.

Posted October 4, 2013 link

These pictures may help.

It looks like this

or integrated with the pressurstat

As mentioned, I will confirm that some 220 volt Cuadra machines will not have this relay and voltage wires will run directly to the pressurstat.

 
Sincerely,
Jim Piccinich
Business Partner
1st-line Equipment, LLC
www.1st-line.com

Follow us on Facebook: http://www.facebook.com/1stline
Twitter: http://twitter.com/1stline
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elliottrosenberg
Senior Member


Joined: 19 Oct 2010
Posts: 5
Location: melbourne
Expertise: I love coffee

Posted Fri Oct 4, 2013, 8:29pm
Subject: Re: La Nuova Era Cuadra Owners Thread
 

Thanks for that guys.

There is definitely no relay on the front panel or on top of the pressure stat.

Does this mean the board has gone? If so, is this a job I can do myself?

Elliott
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beanfranklin
Senior Member


Joined: 5 Oct 2013
Posts: 5
Location: Austin
Expertise: I like coffee

Posted Sat Oct 5, 2013, 8:00am
Subject: Re: La Nuova Era Cuadra Owners Thread
 

Hello and hep. I have a Cuadra purchased a couple of years ago. It has always worked great. I back flush daily when turning off the machine. I regularly back flush with JoeGlo. I use filtered water and descale a couple of times a year. 4-5 double shots per day, except for June-September when we are out of town. When I left town in June, it was working great. Machine is not on 24/7 - more like 4 hours per day. Anyway, when I returned to town a few days ago, the machine wasn't working quite right. It takes an exceptionally long time to pull a shot, and the pump, sounding normal at first, sounds like it is almost stalling further into the shot - and the puck is very wet (used to be much drier). All other variables (grind, dose, coffee, etc.) are the same as before. The pressure gauge on the front reads around 14-15 bar (as it always has). Any ideas? I'm no expert, and have never had this machine apart. If it helps, I descaled right before I left town in June. I am in the USA - 110V, if that matters.

Thanks.

Scott
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pfn
Senior Member


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 Sun Oct 6, 2013, 3:09pm
Subject: Re: La Nuova Era Cuadra Owners Thread
 

Easy mod, I happened to be in Lowes today and found this in one of the electrical parts bins:

Get rid of that crappy, plastic power switch. Use this Click Here (www.lowes.com)

Costs $4.75, like 1/10th the price of the official replacement, and is a drop-in part. All threads, connectors, and hole sizes are identical. I used the original, threaded mounting ring as opposed to the one that came with the switch.

It looks like this:

pfn: IMG_20131006_145724[2].jpg
(Click for larger image)
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SStones
Senior Member
SStones
Joined: 24 Nov 2012
Posts: 474
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 Sun Oct 6, 2013, 3:52pm
Subject: Re: La Nuova Era Cuadra Owners Thread
 

elliottrosenberg Said:

There is definitely no relay on the front panel or on top of the pressure stat.
Does this mean the board has gone? If so, is this a job I can do myself?
Elliott

Posted October 4, 2013 link

Alright. Sorry to be misleading, I will trust in Jim's wisdom that some of the 220V machines may not have sacrificial relays. I have never touched a 220V Cuadra.

The control board does nothing but control the auto-fill of the boiler on the 120V Cuadras, and I expect the same is true of your 220V...  The barely heating issue is most likely that your pressostat is failing. It could be the element.  
If you have an ohm-meter, measure the resistance across the element when cold (Should be between 20 and 35, I am guessing). And measure the resistance across the pressostat (Should be less than 0.5 ohms when cold. The closer to 0 the better).
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SStones
Senior Member
SStones
Joined: 24 Nov 2012
Posts: 474
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 Sun Oct 6, 2013, 3:56pm
Subject: Re: La Nuova Era Cuadra Owners Thread
 

beanfranklin Said:

Anyway, when I returned to town a few days ago, the machine wasn't working quite right. It takes an exceptionally long time to pull a shot, and the pump, sounding normal at first, sounds like it is almost stalling further into the shot - and the puck is very wet (used to be much drier). All other variables (grind, dose, coffee, etc.) are the same as before. The pressure gauge on the front reads around 14-15 bar (as it always has). Any ideas? I'm no expert, and have never had this machine apart.
Scott

Posted October 5, 2013 link

I think you're just stalling the pump with too fine a grind. The humid weather may be needing you to adjust the grinder a little coarser.
Pressure gauge on the front is showing boiler pressure. Probably 1.4-1.5 Bar... A little high in some opinions, but not likely to cause a flow issue with your brew circuit.  Before changing anything else, run three or four pulls at a coarser grind.
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beanfranklin
Senior Member


Joined: 5 Oct 2013
Posts: 5
Location: Austin
Expertise: I like coffee

Posted Mon Oct 7, 2013, 7:21am
Subject: Re: La Nuova Era Cuadra Owners Thread
 

SStones Said:

I think you're just stalling the pump with too fine a grind. The humid weather may be needing you to adjust the grinder a little coarser.
Pressure gauge on the front is showing boiler pressure. Probably 1.4-1.5 Bar... A little high in some opinions, but not likely to cause a flow issue with your brew circuit.  Before changing anything else, run three or four pulls at a coarser grind.

Posted October 6, 2013 link

Thanks for the reply. I just looked at the scale on the gauge again -- I think I was reading the psi scale on the boiler pressure gauge. Bar reading is 1.0 - 1.1 -- is that too low? It is the same as it has been since day 1, and always worked great till recently. I'll try the coarser grind.
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1stline
Senior Member
1stline
Joined: 24 Jan 2002
Posts: 492
Location: Freehold, NJ USA
Expertise: Professional

Espresso: Undisclosed
Grinder: Indisclosed
Vac Pot: Bodum Electric
Drip: None
Roaster: None
Posted Mon Oct 7, 2013, 7:48am
Subject: Re: La Nuova Era Cuadra Owners Thread
 

beanfranklin Said:

Hello and hep. I have a Cuadra purchased a couple of years ago. It has always worked great. I back flush daily when turning off the machine. I regularly back flush with JoeGlo. I use filtered water and descale a couple of times a year. 4-5 double shots per day, except for June-September when we are out of town. When I left town in June, it was working great. Machine is not on 24/7 - more like 4 hours per day. Anyway, when I returned to town a few days ago, the machine wasn't working quite right. It takes an exceptionally long time to pull a shot, and the pump, sounding normal at first, sounds like it is almost stalling further into the shot - and the puck is very wet (used to be much drier). All other variables (grind, dose, coffee, etc.) are the same as before. The pressure gauge on the front reads around 14-15 bar (as it always has). Any ideas? I'm no expert, and have never had this machine apart. If it helps, I descaled right before I left town in June. I am in the USA - 110V, if that matters.

Thanks.

Scott

Posted October 5, 2013 link

Test without the water softener atatched and make sure there is enough water int he reservoir as the hose will not reach bottom.

If problem goes away, then make sure to recharge the water softener every month minimum.

 
Sincerely,
Jim Piccinich
Business Partner
1st-line Equipment, LLC
www.1st-line.com

Follow us on Facebook: http://www.facebook.com/1stline
Twitter: http://twitter.com/1stline
Blog: http://1st-line.blogspot.com/
YouTube: http://www.youtube.com/user/1stlineespresso
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elliottrosenberg
Senior Member


Joined: 19 Oct 2010
Posts: 5
Location: melbourne
Expertise: I love coffee

Posted Mon Oct 7, 2013, 5:38pm
Subject: Re: La Nuova Era Cuadra Owners Thread
 

Thanks for the reply Jim and Steve.

Will give it a try and keep you all posted
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beanfranklin
Senior Member


Joined: 5 Oct 2013
Posts: 5
Location: Austin
Expertise: I like coffee

Posted Tue Oct 8, 2013, 12:27pm
Subject: Re: La Nuova Era Cuadra Owners Thread
 

1stline Said:

Test without the water softener atatched and make sure there is enough water int he reservoir as the hose will not reach bottom.

If problem goes away, then make sure to recharge the water softener every month minimum.

Posted October 7, 2013 link

I will try that in the morning, thanks. I do recharge the softener every month, but it had been sitting for four months, so maybe that had something to do with it.
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