Search found 222 matches

by benm5678
January 6th, 2023, 12:12 pm
Forum: Repairs, Restorations & Mods
Replies: 19
Views: 433

La Marzocco GS3 AV brew pressure problem

It's hard to explain what is happening, since it's very inconsistent. Every time I touch the pump pressure screw, who knows where things will end up... and it doesn't always remain constant. I wonder if it's worth to remove bypass valve via arrow I point in yellow? Can grab the body pointed to in re...
by benm5678
January 4th, 2023, 10:33 am
Forum: Repairs, Restorations & Mods
Replies: 19
Views: 433

La Marzocco GS3 AV brew pressure problem

But with a blind basket now I get 12bar... if I drop the pressure to 9.5/10 with blind basket, wouldn't that mean in free flow it would be way less the 9bar
Advertisement
by benm5678
January 3rd, 2023, 6:53 pm
Forum: Repairs, Restorations & Mods
Replies: 19
Views: 433

La Marzocco GS3 AV brew pressure problem

Yes, 12bar also when backflushing (a 1 sec stop at 9bar, and then shoots up to 12)
by benm5678
January 3rd, 2023, 5:44 pm
Forum: Repairs, Restorations & Mods
Replies: 19
Views: 433

La Marzocco GS3 AV brew pressure problem

So after observing for last few days, current state is the free flow pressure is fairly consistent at 9bar and I get 80ml in 10sec. But when I pull a shot or have a blind basket, it goes up to 9bar for a second & quickly jumps to 12bar -- this is even with shots that flow normally in 30sec
by benm5678
January 1st, 2023, 11:06 am
Forum: Repairs, Restorations & Mods
Replies: 3
Views: 205

La Marzocco GS3 AV steam boiler overfilling

Yea, I checked the hot water first, and that one was ok, so I guess at least 1 of the check valves work From what I read the last option is a crack in the exchange tube -- doesn't sound like a fun one. Thanks for the tips! ...will keep an eye on things
by benm5678
January 1st, 2023, 10:36 am
Forum: Repairs, Restorations & Mods
Replies: 3
Views: 205

La Marzocco GS3 AV steam boiler overfilling

UPDATE: I partially took solenoid apart today (figured out the top part was just a cap)... I could not unscrew the metal pole from the brass body, so I just dipped everything in distilled vinegar. I'm not sure if this is safe on rubber parts, which I assume are in there, so just left it there for 30...
by benm5678
December 31st, 2022, 10:35 pm
Forum: Repairs, Restorations & Mods
Replies: 3
Views: 205

La Marzocco GS3 AV steam boiler overfilling

Hey all, I just got my GS3 back to plumbed in state after repairing the flowmeter gicleur. Just to explain the chain of events, I was noticing my pump pressure wasn't consistent at 9bar (free flow) -- it would be ok for few shots, and then suddenly go higher & I would need to readjust the pump's byp...
by benm5678
December 24th, 2022, 11:17 am
Forum: Repairs, Restorations & Mods
Replies: 19
Views: 433

La Marzocco GS3 AV brew pressure problem

Thanks so much Jake! Yes, everything is working smooth now & pressure is 9bar at free flow -- by some miracle no leaks either SUPER APPRECIATE your time and expertise; not sure what we would do without such amazing contributors like yourself. Thanks a ton and enjoy your holiday!!!
by benm5678
December 23rd, 2022, 4:36 pm
Forum: Repairs, Restorations & Mods
Replies: 19
Views: 433

La Marzocco GS3 AV brew pressure problem

Ah, thanks!! ...on mine it's a flat head round screw that I had to get out from bottom & then I could bend it a bit more and get another wrench on the flowmeter body to provide leverage. And the effort wasn't for nothing, you got me on right track - there was a big clump there and after
by benm5678
December 23rd, 2022, 3:05 pm
Forum: Repairs, Restorations & Mods
Replies: 19
Views: 433

La Marzocco GS3 AV brew pressure problem

Did you have any issue removing the copper pipe nut? On mine it's stuck, and I feel like it's bending the back screw. It seems on mine the back screw extends to frame - so I'm also not sure if I can get a screwdriver in there unless I disassemble all the pipes on that side!? {image} {image}