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La Nuova Era Cuadra Owners Thread
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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 Fri Apr 19, 2013, 6:23am
Subject: Re: La Nuova Era Cuadra Owners Thread
 

888RP Said:

After i engage the pump and flush the grouphead the temp will go from 165 to a temp of 200ish.

Posted April 19, 2013 link

What does your pressure gauge read during this time? If it's at least .8bar your machine is simply taking a while to heat up. I don't believe I hit 200F in 20 minutes on my machine, more like 45...
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888RP
Senior Member


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

Espresso: Cuadra
Grinder: Vario
Posted Fri Apr 19, 2013, 6:52am
Subject: Re: La Nuova Era Cuadra Owners Thread
 

pfn Said:

What does your pressure gauge read during this time? If it's at least .8bar your machine is simply taking a while to heat up. I don't believe I hit 200F in 20 minutes on my machine, more like 45...

Posted April 19, 2013 link

thanks for the reply, the pstat reads .8-1bar. I don't think that's it. I have 20 observations of data.

15 observations: turn machine on, pump is engaged immediately, 20-30 minutes later the grouphead is at 200F and pstat between 0.8-1bar
5 observations: turn machine on, pump does NOT engage, 20-30 minutes later the group head is at about 150-165F and pstat is between 0.8-1bar. As soon as i flush the machine, the temp on the grouphead begins to rise again.

All 20 observations - full water tank and the machine was off all night.
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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 Fri Apr 19, 2013, 6:57am
Subject: Re: La Nuova Era Cuadra Owners Thread
 

888RP Said:

thanks for the reply, the pstat reads .8-1bar. I don't think that's it. I have 20 observations of data.

15 observations: turn machine on, pump is engaged immediately, 20-30 minutes later the grouphead is at 200F and pstat between 0.8-1bar
5 observations: turn machine on, pump does NOT engage, 20-30 minutes later the group head is at about 150-165F and pstat is between 0.8-1bar. As soon as i flush the machine, the temp on the grouphead begins to rise again.

All 20 observations - full water tank and the machine was off all night.

Posted April 19, 2013 link

Wait longer for days the pump does not engage?

Sounds like a thermosiphon stall; my machine doesn't doesn't engage the pump when turned on that I recall (I rarely turn it on myself, timer in the morning does it for me before I wake)
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888RP
Senior Member


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

Espresso: Cuadra
Grinder: Vario
Posted Fri Apr 19, 2013, 7:02am
Subject: Re: La Nuova Era Cuadra Owners Thread
 

pfn Said:

Wait longer for days the pump does not engage?

Sounds like a thermosiphon stall; my machine doesn't doesn't engage the pump when turned on that I recall (I rarely turn it on myself, timer in the morning does it for me before I wake)

Posted April 19, 2013 link

do thermosyphone stalls damage the machine? My concern is that the boiler is heated up with no water in it when this is happenning. Does that make sense or am i way off base? I only really have a conceptual understanding of how HX machines work..
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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 Fri Apr 19, 2013, 9:23am
Subject: Re: La Nuova Era Cuadra Owners Thread
 

888RP Said:

do thermosyphone stalls damage the machine? My concern is that the boiler is heated up with no water in it when this is happenning. Does that make sense or am i way off base? I only really have a conceptual understanding of how HX machines work..

Posted April 19, 2013 link

It's unlikely that your boiler does not have water in it. (if your water is draining over night, you'd have a mess of water on your countertop or in your drip train). You could easily verify by opening the hot water tap, after some water is dispensed, water will be pumped into the boiler.

The thermosiphon stalling isn't a big deal, it just means water isn't getting into the grouphead to heat it up for some reason or other; flushing it to get a temperature differential results in the water moving again.
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888RP
Senior Member


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

Espresso: Cuadra
Grinder: Vario
Posted Fri Apr 19, 2013, 9:37am
Subject: Re: La Nuova Era Cuadra Owners Thread
 

pfn Said:

It's unlikely that your boiler does not have water in it. (if your water is draining over night, you'd have a mess of water on your countertop or in your drip train). You could easily verify by opening the hot water tap, after some water is dispensed, water will be pumped into the boiler.

The thermosiphon stalling isn't a big deal, it just means water isn't getting into the grouphead to heat it up for some reason or other; flushing it to get a temperature differential results in the water moving again.

Posted April 19, 2013 link

ahh okay. That makes sense. Thanks for taking the time to reply to this.
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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 Sat Apr 20, 2013, 10:27am
Subject: Re: La Nuova Era Cuadra Owners Thread
 

Hey guys,  just wondering,  how often are you doing a descale on your machines?    What kind of frequency are you using?
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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 Sun Apr 21, 2013, 5:38am
Subject: Re: La Nuova Era Cuadra Owners Thread
 

I am doing 3x per year.
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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 Sun Apr 21, 2013, 10:22am
Subject: Re: La Nuova Era Cuadra Owners Thread
 

MDiddy Said:

Hey guys,  just wondering,  how often are you doing a descale on your machines?    What kind of frequency are you using?

Posted April 20, 2013 link

Monthly.

The right answer for you totally depends on your water hardness.
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Iluvdabean
Senior Member
Iluvdabean
Joined: 7 Mar 2005
Posts: 1,282
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 Sun Apr 21, 2013, 6:07pm
Subject: Re: La Nuova Era Cuadra Owners Thread
 

I am going to follow Jims recommendations and use the products they recommend,on the time schedule they recommend. I am logging the amount of drinks i make.Right now until I retire in June ( Thank You Lord) it isnt everyday like I
will be doing then. Right now in three weekends I have made 54 double shot drinks. I suspect after one more weekend making one full month, that will go up to 70 double ounce drinks. Now does that warrant
descaling  once a month or is two months better for that type of usage.I am using the inline softener/Bilt treated Alpine water also. When I retire I will be using it everyday and then I will expect a monthly descaling. I will run this by Jim to see what he thinks but
I have no problem doing it once a month right now. To me if you buy something you do the maintenance if you want it to last.Period.

scanfield Said:

Monthly.

The right answer for you totally depends on your water hardness.

Posted April 21, 2013 link

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