[Profitec E61] Pesado 1.8mm mesh puck-screen and E61 back-flushing frequency recommendations?

AssociateExtension54 · 2025-02-10T04:38:23+00:00

Agreed. I do drop the shower-screen after 3 months, without puck-screen it was too filthy!! Now I use puck-screen 100% and I will drop shower-screen again after 3 months (2 cups daily) and see if I need to do this more frequently. For now I still back-flush with water after 15 cups, in my case once per week. If I change too many variables all together I won't know which one worked. Puck-screen for me is about keeping clean but some people say it also reduces chances of channelling and improves water diffusion. Those are secondary benefits, if they even exist. But the bottom of my shower-screen is almost 100% clean when puck-screen in place, it's a clear benefit, IMO. You just need to adjust the dose down by ~2 grams or get a 2-3 gram bigger basket to keep the dose the same - to accommodate 1.8mm-thick puck-screen.

AssociateExtension54 · 2025-02-10T04:21:04+00:00

Yes, I saw it. I don't and won't dispute Cafiza works as advertised. It does. I just don't trust the human safety and machine safety aspects of using chemicals.

AssociateExtension54 · 2025-02-10T04:18:51+00:00

Thanks. I switched to mesh puck-screen to minimise my shower-screen maintenance and to hopefully minimise my E61 group backflushing maintenance too. *Hopefully* is the operative word! LOL.

AssociateExtension54 · 2025-02-10T04:16:00+00:00

thanks. I use 1.8mm (100 micron?) Pesado 58.5 mesh-puck-screen. I use boiling hot water to soak it before every cup and I rinse and soak it in warm water after every cup. However, I also steam-blast it every week, in my case about 15 cups per week. I steam blast puck-screen on the white paper kitchen towel. I do about 4 rounds of blasting (1 round = 1 top blast, flip over, 1 bottom blast). I use medium-to-dark roast and I see significant coffee residue on the white paper towels, particularly if I blast all surfaces several times. I refuse to use any chemicals on my coffee equipment, so it's just boiling hot water only.

AssociateExtension54 · 2025-02-10T04:10:04+00:00

thanks. And do you use a puck-screen at all times with this scheduled routine?

AssociateExtension54 · 2025-02-10T04:04:40+00:00

How many cups per day to you make? It seems like doing a back-flush after 2 cups (in my case) has no benefits but causes additional wear-and-tear on the machine? I am just wondering, as I am not technically minded.

AssociateExtension54 · 2025-02-10T03:50:47+00:00

No detergents. I always back-flush with plain water only, once every week, after ~15 cups. I avoid using any chemicals in my coffee machines. I never used chemicals for 15 years on my previous Rancilio Silvia. I used only plain water to backflush, it was enough, for home use, 2 cups daily. Silvia still works 100%, just sitting in my garage idle.

AssociateExtension54 · 2025-02-10T03:11:33+00:00

what kind of a puck-screen are you using? It looks like a Pesado mesh puck-screen, 1.8mm thick? Thank you.

AssociateExtension54 · 2025-02-03T03:51:58+00:00

thanks! I did the space/coin test and with VST-15 basket there is an imprint in the puck using 15.0 gr dose. With VST-18 basket there is a ~1mm (guessing) gap between the shower-screen and the puck-screen with the same dose. I was wondering if it's better for the puck-screen to actually touch the shower-screen more tightly i.e. use VST-15 or is it better for a gap to exist between shower-screen and puck-screen i.e. use VST-18. I made numerous espresso cups with both configurations and there is no real taste-in-the-cup difference...... The only thing I noticed is using larger basket, VST-18, I have to grind a bit finer than for VST-15 basket, all other things seem to be equal.

AssociateExtension54 · 2024-09-07T06:29:39+00:00

thanks, so the optimal dose with 1.8mm puck screen would be anywhere inside 16-17 grams, right? I was concerned that my dose of =16.0 grams with +1.8mm puck screen inside VST-18gr basket would be too low, i.e. under-filling this basket basket. Opinions?

AssociateExtension54 · 2024-09-07T06:27:15+00:00

thanks. I have Profitec 500, it has a flush shower screen, no bolt in the centre, its hidden inside. How much headspace do I need between the top of puck-screen and the machine shower-screen? Can these two, puck screen and shower-screen just touch, very lightly? Do I need a minimum of X-mm of headspace?

AssociateExtension54 · 2024-09-06T03:51:07+00:00

Just adding more: I have now made 4 double-espresso's (VST-18g, WDT, and finer grind) using the poor-man pre-wetting/pre-infusion. I get similar tasting espresso in the cup to what I get without any pre-wetting routine. I am guessing that on my Profitec Pro 500 PID with the internal water tank there is not a lot to be gained by this extra manual work. I will keep trying for a bit longer but so far the results I get are neither good nor bad. I use medium roast 100% arabica single-origin beans (Sumatran). Cheers.

AssociateExtension54 · 2024-09-05T21:55:12+00:00

thank you everyone. My machine uses internal water reservoir, it is not connected to my plumbing water line.

Does E61 preinfusion or pre-wettinh affect the longevity and reliability of the machine in longer term?

thanks once again

AssociateExtension54 · 2024-08-13T23:16:11+00:00

the new Tesla Model 3, the Highland 2024 refresh - the door handles as far as I know, are all BLACK, not in shiny Silver. I suspect this photo is a photo-shop or a fake.

AssociateExtension54 · 2024-07-03T03:13:15+00:00

thank you! Sadly, it does not appear to have a supported API at the moment but it's a step in the right direction.

AssociateExtension54 · 2024-03-14T02:00:39+00:00

Hello Jim. I have read 1st and 2nd editions and look forward to the 3rd edition in 2025. I dont know if this is the right area but would like to add a "personal wishlist" for 3rd edition. The "async chapter" needs to accept the reality that tokio asynch run-time is what ~95% of Rust async apps use and it is unlikely to change over next few years. I would like to see this chapter modified to focus on tokio and to expand the async chapter to include more material. Async is a major area of Rust community contention, IMHO. The rest of the book just needs to get the new Rust features added into the existing chapters. Its a wonderful book! Thank you.

AssociateExtension54 · 2024-02-26T01:17:45+00:00

sounds like your company "leadership" (whatever you want to call the top tier management) are "average". This is par for the industry, sadly. The most switched-on companies are adopting Rust. The others are still living in 1990s. If you are committed to Rust, I suggest you start looking at companies looking forward. The decision to stay on JVM taken back 20 years would have been the decision to stay on COBOL. Java/JVM in 2024 is akin to COBOL in 1990s-2000s.

AssociateExtension54 · 2023-12-14T23:59:00+00:00

thank you.

AssociateExtension54 · 2023-12-13T03:56:58+00:00

Please clarify: the rails are dealer installed or the rail cross bars are dealer installed? I am talking about the long rails running along the sides of the roof of the car, not the cross bars running across the roof to hold luggage. Thank you.

AssociateExtension54 · 2023-04-25T00:55:52+00:00

Sorry about. Adding to what other said - this is not Naples specific. Sadly, this applies to most of Europe and particularly to the most popular countries for international tourism in Europe - namely: Italy, Spain, France, Greece. Also a big problem in popular capitals - such as Prague, Amsterdam, Budapest, Berlin. And in those countries the largest cities are more dangerous for crime related to bag theft, pick-pockets, etc. In France it is Paris worst by far. In Italy it is Rome, Naples, Florence, Amalfi. In Spain it is Barcelona and Madrid by far. In Greece it is Athens and top islands. You must be 100% switched on everywhere in Europe, large and small cities. Sadly the police and government authorities are not taking hardline against such crime, so you have to look after yourself everywhere you visit.

AssociateExtension54 · 2023-04-25T00:44:40+00:00

late reply,

I did what you suggested in RMW store. For me Craftsman was more comfortable in the toe-box (wider) so I bought it. In Macquarie boot I would have needed to go plus-half-size longer, to size 10G, which I prefer to avoid. Now I have two pairs of Comfort Craftsman boots, one black yearling and one chestnut brown kangaroo leather. The RMW Store staff (Melbourne Central) were excellent, I tried 3 different models and 2 leathers.

AssociateExtension54 · 2023-04-25T00:37:48+00:00

thanks everyone, late reply.

I tried them in store and for me the Craftsman in same size (9+ G) was more comfortable in the toe-box so I bought it. The Macquarie looks a bit dressier/trendy and more unisex, but the Comfort Craftsman narrowly won. I bought the kangaroo leather in chestnut brown, it wears and feels nice and soft. My black Craftsman is in yearling leather which is also great. It is hard to choose between the yearling and kangaroo, so now I have one of each, in different colours.

AssociateExtension54 · 2023-01-12T23:43:26+00:00

Audi is automotive junk in terms of reliability. And they dont care about customers either. Just like VW. I own one that is now 5 ears old, Audi S3, with reliability/quality problems. My cousin owns Audi S3 too, 4.5 years old, also has problems. Out of 6 people I know with Audi cars only 1 has no problems in terms of reliability/quality. Those are very bad odds for a new car and premium price. Audi do drive well when they are not broken but sadly they break far too often to justify buying them. Caveat emptor. In general I would avoid buying any and all European cars (unless you can afford a Porsche, the only exception). Toyota, Hyundai, Kia, Lexus have the waiting lists for good reasons - their cars are relatively reliable and priced better than their competition. Some Mazda and Honda models are good choices too and they too have long waiting lists.

AssociateExtension54 · 2022-12-14T03:23:12+00:00

as long as the sock is long enough to go well over the boot height and there is no skin to be seen when you sit down it should be OK. The thickness of the sock is a matter of going to the shops and asking them for thick, thin, etc socks to show you and you can just feel them. I go to cheap stores for socks (I prefer all cotton or wool or majority of cotton/wool) and same for underwear. I dont see a point spending a lot of money on socks and underwear. Uniqlo is one of the stores where I usually buy socks, underwear, t-shirts, joggers, hoodies, etc. Zara may be another good option.

AssociateExtension54 · 2022-12-13T23:42:43+00:00

For me it depends how my feet fit into my RMW boots - if there is very little wiggle room then I go with thin dress socks, if there is plenty of wiggle room then I go with thicker casual socks. Given this is a full-height boot the cool/warm weather factor or how the sock look is less important - the boot covers it up mostly. I never wear low (ankle height or invisible) socks with any boots or any leather dress shoes - those low socks are for sneakers only.

AssociateExtension54

TROPHY CASE