La Marzocco Linea Mini User Experience - Page 178

#1771: Post by **Jake_G** » January 24th, 2023, 11:15 am

The Micra and mini still mix the preheated water with fresh water, but they don't use the adjustable mixing valve to do it. The mini uses a cross fitting before the IBG that mixes the hot and cold and sends to the IBG and brew gauge. There is a restrictor on the fresh water line that limits the amount of cold water.

On the Micra, there is a manifold that all the water flows through. The bottom half of the manifold has the cold water feed, the expansion valve, and feeds the preheat loop. The top have has the return from the preheat loop, the brew gauge and the feed to the brewing group. It is unclear to me if the manifold has a small orifice between the top and bottom or if it simply acts as a heat sink to temper the water heading to the group.

Hopefully I'll find out soon!

January 27th, 2023, 11:27 am

Hi folks,

Long time lurker here and I've learned a lot from everyone in this community. Just a qq about adjusting the brew pressure. I just upgraded to a 2022 LMLM last month coming from a BBP then an ECM Mech V. I've already done the gliceur mod and tested with 9 bars for a few weeks, so now I want to experiment with lowering the brew pressure as it seems many have done.

My current preferences are mostly Brazil/Honduras in med to med-dark - nothing oily. I'll occasionally try a light but I haven't found one that I've thoroughly enjoyed yet. What's the ideal brew pressure to set it at? The most common I'm seeing is 6-7. Is that what would be best for my preference in roast level?

I wasn't getting any channeling at all from the stock LMLM but I do appreciate the lower flow rate from the gliceur mod. Can you please confirm my understanding (I've read The Low Pressure Rehash article already), is this what a lower brew pressure will accomplish:

Lower brew pressure = slower flow = slower extraction = finer grind = thicker, syrupy shots with a higher EY%

Thanks!

UPDATE: I've lowered to 6.5 bar, and safe to say, I won't be going back to 9

#1773: Post by **OK31** » February 1st, 2023, 6:15 pm

I've asked before somewhere. It will try again. This is kind of silly and possibly unnecessary but is there a reason why one shouldn't pull out the water tank, use the jumper on the connection ends in the machine so it doesn't think it's pulled out and just put it somewhere as far as that hose will reach?

Just thinking a quasi "plumbed solution that will allow space for drain hose.

February 1st, 2023, 7:56 pm

I don't understand what you're trying to do. You can have a drain hose without doing this.

February 1st, 2023, 9:00 pm

With the reservoir connected and under the machine is there enough clearance depth wise for the drain hose? My machine isn't plumbed for water but I'd love to have it drain out. I know it's counter intuitive if then reservoir has to be pulled out but that's why I was thinking to keep it out completely no? It's a high tech solution to a low tech problem

#1776: Post by **Zoobee** » February 2nd, 2023, 1:33 pm

OK31 wrote: With the reservoir connected and under the machine is there enough clearance depth wise for the drain hose?

No.

But the drain tray is so huge I could easily go a week without dumping it. In that time I would have taken it off to refill the reservoir 3-4 times. So yeah it doesn't make much sense to not just turn it over in the sink then. It doesn't add a second to your routine. Unless I guess maybe if your machine isn't near a sink...?

#1777: Post by **OK31** » February 2nd, 2023, 5:05 pm

Zoobee wrote:Unless I guess maybe if your machine isn't near a sink...?

It's not far but not ideal. Just thinking out loud.

#1778: Post by CC » February 5th, 2023, 7:12 am

Love your machine and Wowa does amazing work.

haulin oats wrote:Recently added some wood/stainless steel accents to my LMLM. I got it from Wowa design.

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#1779: Post by **Jaroslav** » February 11th, 2023, 6:48 am

Hi guys!

Not sure if this was mentioned, but if I remember correctly, the max pre-brew time used to be 5 seconds. It seems this was extended to 10 for both parameters, which actually does make a difference.

I'd consider myself an antagonist to this whole pre-brew feature, but I've just pulled a shot (ground a tick finer) with the above parameters and it was actually, surprisingly, really good. The previous pre-brew time limits always made my shots undrinkable.

I'm still not a fan of how this works (it intervenes with rinsing), but at least it's improved and finally useful (at least from my view) for non-plumbed machines.

#1780: Post by **iploya** » February 11th, 2023, 8:34 am

Jaroslav wrote:pre-brew feature...just pulled a shot (ground a tick finer) with the above parameters...at least it's improved and finally useful (at least from my view) for non-plumbed machines.

Thanks Jaroslav. I am a new user and was wondering if anyone had come up with any useful parameters on the Pre-Brewing feature. Indeed, my app allows up to 10s as well so I will try this.

EDIT [wipes eyes, cleans glasses, allows time for the previously ingested coffee to do its magic]...I just realized this was for the mini not micra...BUT...I still want to try these settings. Hopefully the benefit is good on either.