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Lelit PL41 owners thread
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tasseloff
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Joined: 18 Jan 2009
Posts: 229
Location: Sherbrooke, Canada
Expertise: I love coffee

Posted Fri Feb 11, 2011, 3:16pm
Subject: Re: Lelit PL41 owners thread
 

I now see what you mean.

Its quite hard to say really. Its definitely Crema thats coming over the top, but I still feel like it might be due to an overflow from the group seal. When it doesn't overflow, the flow just isn't the same, its hard to explain. I will try to make a video in the near future, it'll be easier to show.
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tasseloff
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Joined: 18 Jan 2009
Posts: 229
Location: Sherbrooke, Canada
Expertise: I love coffee

Posted Sat Feb 12, 2011, 8:58am
Subject: Re: Lelit PL41 owners thread
 

Well, I couldn't have it leak this morning, most likely because the coffee is now a few days old. However I still took a video to show the steam coming out when you pull a shot as soon as the light comes off.

http://www.youtube.com/watch?v=5fqgvX965o8
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Frost
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Frost
Joined: 26 Jul 2007
Posts: 2,053
Location: Sierra
Expertise: I love coffee

Espresso: Isomac Venus
Grinder: Lelit PL53
Roaster: Poppery I w/variac, MET, BT
Posted Sat Feb 12, 2011, 10:02am
Subject: Re: Lelit PL41 owners thread
 

Looking at the video, I would want to do something with the showerhead.  Is there room to add a baffle plate of brass shim stock?
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tasseloff
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Joined: 18 Jan 2009
Posts: 229
Location: Sherbrooke, Canada
Expertise: I love coffee

Posted Sat Feb 12, 2011, 10:36am
Subject: Re: Lelit PL41 owners thread
 

Possibly, but I'm not sure if it would fix anything. There was actually a site where the guy tried such a thing: http://www.coffeetamper.com.au/kb/imat/tips.html#wormholes
But he says he basically didn't notice much of an improvement.
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Frost
Senior Member
Frost
Joined: 26 Jul 2007
Posts: 2,053
Location: Sierra
Expertise: I love coffee

Espresso: Isomac Venus
Grinder: Lelit PL53
Roaster: Poppery I w/variac, MET, BT
Posted Sat Feb 12, 2011, 10:49am
Subject: Re: Lelit PL41 owners thread
 

Quote from site:

" .......The only potential issue caused by the diffusion disc is a possible slight reduction in effectiveness of the 3 way valve, meaning pucks may not be quite as hard and dry as before. This though is largely theoretical, I haven't noticed a great change myself."


I take that to mean he is referring to the 3-way valve function, Not mentioning the potential improvement to the shot extraction quality.  Maybe I didn't read far enough,....  The design he used is what I had in mind.
Brass shim stock is easy to work with. It cuts with scissors,  a needle or micro drill for holes.
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tasseloff
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Joined: 18 Jan 2009
Posts: 229
Location: Sherbrooke, Canada
Expertise: I love coffee

Posted Tue Feb 15, 2011, 6:50pm
Subject: Re: Lelit PL41 owners thread
 

Hmm you may be right, the text is a bit misleading. I may just give it a try if I can find a small enough brass shim to put in there.

I'll report back here if I manage to work it out.
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valcs
Senior Member


Joined: 23 Oct 2002
Posts: 7
Location: Fairfax, CA
Expertise: Pro Roaster

Espresso: Lelit PL41
Grinder: Capresso
Roaster: Probat LG3, Behmor 1600
Posted Sat Feb 19, 2011, 10:03am
Subject: Re: Lelit PL41 owners thread
 

i am so happy to find this thread. thanx @h3yn0w for the rundown of the issues with lelit. now i see the reasons of the problems.  especially with the bitter or too acid espresso. the thing is my lelit sometimes behaves ok for a week and then "misbahaves" for weeks I did not know why. But I was always suspicious about the "too hot water" issue. I made this silly video about "Bikini portafilter" but you can clearly see that initially the water burns the coffee. http://www.youtube.com/watch?v=I6Qibx0nY4o . Is there a way to adjust the temperature of the water? Changing the thermostat or something?
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h3yn0w
Senior Member
h3yn0w
Joined: 28 Oct 2010
Posts: 158
Location: Canada

Posted Sat Feb 19, 2011, 11:13am
Subject: Re: Lelit PL41 owners thread
 

valcs Said:

Is there a way to adjust the temperature of the water? Changing the thermostat or something?

Posted February 19, 2011 link

The best way to control the boiler temp is with a PID. It won't really help with temp stability DURING a shot, but it will let you set your starting temp pretty accurately.

Or you need to temp surf. Wait for heater to turn off and then either a) Start shot after X seconds b) Blow off excess pressure via steam valve before shot. c) Flush group a couple seconds before starting shot.
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valcs
Senior Member


Joined: 23 Oct 2002
Posts: 7
Location: Fairfax, CA
Expertise: Pro Roaster

Espresso: Lelit PL41
Grinder: Capresso
Roaster: Probat LG3, Behmor 1600
Posted Sat Feb 19, 2011, 11:58am
Subject: Re: Lelit PL41 owners thread
 

Unfortunately  PID is not the option.  i will go and try the a) , b) and c). Thanks a lot for the answer.
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Frost
Senior Member
Frost
Joined: 26 Jul 2007
Posts: 2,053
Location: Sierra
Expertise: I love coffee

Espresso: Isomac Venus
Grinder: Lelit PL53
Roaster: Poppery I w/variac, MET, BT
Posted Sat Feb 19, 2011, 12:03pm
Subject: Re: Lelit PL41 owners thread
 

Option d) put a thermometer probe on the boiler so you can tell what the boiler temp is and how the machine behaves during the thermostat cycle and cooling flushes.
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