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La Nuova Era Cuadra Owners Thread
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Discussions > Espresso > Machines > La Nuova Era...  
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Iluvdabean
Senior Member
Iluvdabean
Joined: 7 Mar 2005
Posts: 1,280
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 Mon May 6, 2013, 6:59am
Subject: Re: La Nuova Era Cuadra Owners Thread
 

Wow I thought I was doing good making four in a row. I agree with you this machine has an awesome capability. It steams
effortlessly too. I read somewhere and I know if I mention it someones going to ask me to find it, but it was on an Italian
website and it actually said this machine could be used to make 60 a day without a problem lending creedence to its prosumer tag.
All I know is I love mine and am very happy with it.


bodkacoffee Said:

I found out last night how well mine worked. We had family and friends over and made 22 lattes with a double shot each and steamed milk and did it basically without stopping. It kept up very well. I am pleased.

Posted May 6, 2013 link

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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 Mon May 6, 2013, 7:23am
Subject: Re: La Nuova Era Cuadra Owners Thread
 

SStones Said:

I would mount it between the water-reservoir carrier and the curved back wall.  One hole drilled through the reservoir-holder if the top-left(From front) corner is enough to bolt the relay on to, through whatever is becoming the protective cover.  Any bit of thin sheet, or even duct tape would do to protect it from water so long as it's bolted to the good sheet-metal heatsink of the reservoir-carrier (I'd use thin sheet metal from a beercan to make the cover, that way I get to enjoy a Guinness).  The metal reservoir carrier makes a decent heat-sink. The bulk of the reservoir protects it from infra-red radiation off the boiler.  It works just fine.

The relay I always use is the Omron G3NA 220B.
I don't know how to put up photos on this posting, but if you want to fire me an e-mail, I can e-mail you photos of the first one of these I did with a metal protective cover rather than the plastic (And packing tape) protection I had originally been doing this with.
I have done this upgrade at least 10 times, first had to be a couple years ago.  Apparently no problems yet.

Posted May 3, 2013 link

Yeah, if mounted elsewhere, it does sound pretty reasonable, like I'd mentioned before.

I haven't really checked around to see how much space I'd have for an alternative mounting location. Somewhere behind the water reservoir or in that area should be safe; there's an insulated, steel wall reducing the heat from the boiler already.

Are you running the G3NA without any additional heatsinking, do you know what your operating temperature runs for the relay? I don't know if the steel structure where a mount is feasible is massive enough to perform adequate cooling duties. How about leakage current, are you doing anything to eliminate it, or is ~.5W of constant power not enough to really power the heating element and cause an issue?
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scanfield
Senior Member


Joined: 21 Nov 2011
Posts: 181
Location: Texas
Expertise: I like coffee

Espresso: La Nuovo Era Cuadra
Grinder: Baratza Vario
Posted Mon May 6, 2013, 9:08am
Subject: Re: La Nuova Era Cuadra Owners Thread
 

This weekend I descaled and generally cleaned my entire machine. At the end when I was flushing the descaling solution from the boiler, I found the hot water tap getting harder and harder to turn. The last four ounces that I flushed, the hot water tap was very hard to open and close and made an awful metal-on-metal squeaking noise.

Did I flush away all the lubricant on the valve or something? How do I fix this?
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slybarman
Senior Member
slybarman
Joined: 3 Nov 2011
Posts: 366
Location: usa
Expertise: I love coffee

Espresso: La Nuova Era Cuadra
Grinder: Baratza Vario
Posted Mon May 6, 2013, 9:34am
Subject: Re: La Nuova Era Cuadra Owners Thread
 

scanfield Said:

This weekend I descaled and generally cleaned my entire machine. At the end when I was flushing the descaling solution from the boiler, I found the hot water tap getting harder and harder to turn. The last four ounces that I flushed, the hot water tap was very hard to open and close and made an awful metal-on-metal squeaking noise.

Did I flush away all the lubricant on the valve or something? How do I fix this?

Posted May 6, 2013 link

I had the same thing happen.  Lubed it with a food safe lubricant.
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scanfield
Senior Member


Joined: 21 Nov 2011
Posts: 181
Location: Texas
Expertise: I like coffee

Espresso: La Nuovo Era Cuadra
Grinder: Baratza Vario
Posted Mon May 6, 2013, 9:42am
Subject: Re: La Nuova Era Cuadra Owners Thread
 

slybarman Said:

I had the same thing happen.  Lubed it with a food safe lubricant.

Posted May 6, 2013 link

I've attached a diagram of the tap assembly. Approximately where did you apply the lubricant?

After a bit of research, I think this is right kind of grease:
Click Here (www.homedepot.com)
It's good to 400 degrees F and is FDA and NSF compliant.

Did you lube any other parts? I'm thinking that the lever for pulling a shot is feeling a little rough.

scanfield: cuadra.png
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slybarman
Senior Member
slybarman
Joined: 3 Nov 2011
Posts: 366
Location: usa
Expertise: I love coffee

Espresso: La Nuova Era Cuadra
Grinder: Baratza Vario
Posted Mon May 6, 2013, 11:45am
Subject: Re: La Nuova Era Cuadra Owners Thread
 

It was a good year ago, so my memory is fuzzy. I had an exchange with Jim from 1st line about it at the time. IIRC, it was the shaft only. I seem to recall you cannot disassemble the "T" shaped part of the valve from the machine (at least not easily). Best I can remember I removed the shaft the knob rides on and lubed it and then reassembled.
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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 Mon May 6, 2013, 6:48pm
Subject: Re: La Nuova Era Cuadra Owners Thread
 

SStones Said:

Let it sleep overnight with the 8 outer bolts out (4 on top, 2 each side)...
If it stalls again tomorrow, pull the top and the sides off carefully.  Does tapping the pressostat start it going again?  Does tapping the relay start it going again?  Does swearing at the little bastard start it going again?  You hvae poert to the power-switch and beyone, if the green light is on...  That green light and the common of the p-stat is just a short length of very cheap wire apart from each other.  It is uncommon for the pressostats to fail at a young age in a Cuadra, they have that sacrificial relay to die for them.
If your circuit is complete at turn-on, but opening at some incorrect point, then something in the circuit is imperfect. It'll most likely be the relay (I know it's only a day old, but it is a one day old piece of crap), or it is the element or pressostat (A Mater Pressostat is a piece of crap, too...  But not as foul as that clownish relay on a PC Board with a resistor belonging in a DC circuit).  Anyone else notice the "Ramp-Up resistor" on there? Good job, that'd be helpful if it were a DC circuit. Potentially it is preventing the opening spike from damaging that high-tech electronics of that powerboard that doesn't even shut the element off when the boiler is empty.
I shouldn't write about Cuadras on weekends.  I drink on weekends and don't have nice lies to say about them.

Posted May 5, 2013 link

ROFL.  You rock man!

Just an update:

With the new one relay installed, the machine still doesn't fully heat.  After I turn it on, it heats up to about 190 F and then stops.  I can get it to go the whole way up to 204 F by simply flushing water through the hot water tap until the pump kicks on to refill and then turning it off.  As soon as I do that, the temp will start to climb again and get up to 204 and stay there.

I'm thinking it may be the OPV.  Any good procedures on how to remove and clean it?
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Iluvdabean
Senior Member
Iluvdabean
Joined: 7 Mar 2005
Posts: 1,280
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 Mon May 6, 2013, 7:15pm
Subject: Re: La Nuova Era Cuadra Owners Thread
 

MDiddy Said:

Good news guys.   Machine is back to normal operation again.

Got a new relay from Jim and swapped it out for the faulty one,  turned the beast on,  and up to 204 F it went.  

One little hiccup though.   The new relay Got from 1st Line wouldn't work without modification.   The cable that comes off the relay and plugs into the Pstat was  WAY too short.   It wasn't going to reach.   I wound up the longer cable from the old relay and soldering it onto the new one.   Did that and everything is working ok.

I sent Jim an email with a picture showing the different cables.   I'll let you know his response.

Posted May 4, 2013 link

This still doesnt make a lot of sense.You cleaned it and then this! Did you adjust anything while inside?How old is your machine?
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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 Tue May 7, 2013, 6:40am
Subject: Re: La Nuova Era Cuadra Owners Thread
 

MDiddy Said:

ROFL.  You rock man!

Just an update:

With the new one relay installed, the machine still doesn't fully heat.  After I turn it on, it heats up to about 190 F and then stops.  I can get it to go the whole way up to 204 F by simply flushing water through the hot water tap until the pump kicks on to refill and then turning it off.  As soon as I do that, the temp will start to climb again and get up to 204 and stay there.

I'm thinking it may be the OPV.  Any good procedures on how to remove and clean it?

Posted May 6, 2013 link

If everything else is operating fine, e.g. boiler pressure is in-spec (wouldn't have gone for a new relay if the boiler pressure was in spec, imo). I would concentrate my attention on the HX loop through the grouphead. I don't know how narrow the fittings are, maybe you can run some pipecleaner through there and dislodge anything that may be clogging the path?
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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 Wed May 8, 2013, 6:16am
Subject: Re: La Nuova Era Cuadra Owners Thread
 

pfn Said:

If everything else is operating fine, e.g. boiler pressure is in-spec (wouldn't have gone for a new relay if the boiler pressure was in spec, imo). I would concentrate my attention on the HX loop through the grouphead. I don't know how narrow the fittings are, maybe you can run some pipecleaner through there and dislodge anything that may be clogging the path?

Posted May 7, 2013 link

If there's a clog, though, why would simply running some water through the hot water valve fix the issue and then let the machine heat up normally?  I would think if there was a blockage, it would stall and that would be it, no?
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