Owner experience with Bezzera Strega - Page 144

Need help with equipment usage or want to share your latest discovery?
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mrgnomer

#1431: Post by mrgnomer »

Bezzera likes to use loctite. Heat the threaded connection for a bit to soften the loctite then lean in a bit with some torque to break it free. I had to to that with the lever and portafilter handles of all things to break them free when I switched to wooden handles.

If it's the heating element an impact wrench or breaker bar should do the trick. They're notoriously tough to break free.
Kirk
LMWDP #116
professionals do it for the pay, amateurs do it for the love

Mr_Flauschig

#1432: Post by Mr_Flauschig »

Thanks for the tips! I'm planning on doing the same to my handles.

About removing the heater, my boiler is free floating, held in place only by the copper tubing. Even with a little force, I can see it twisting against the tubing. So its not coming out without a ton of work!

About my wiring, everything looks proper. But I see that the pressostat has been moved from before the relay to after the relay. The schematic has the pressostat before the relay.

Time for some descaling :D

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okmed

#1433: Post by okmed »

There's one screw in the bottom of the boiler (if it hasn't fallen out) that fastens the boiler to the frame. You still have to support the boiler with a strap wrench or something while pulling on a socket wrench. A large deep socket is required (I can't remember the size).

Mr_Flauschig

#1434: Post by Mr_Flauschig »

There's one screw in the bottom of the boiler (if it hasn't fallen out) that fastens the boiler to the frame
That makes a ton of sense, thanks. It isn't there.

Mr_Flauschig

#1435: Post by Mr_Flauschig »

I'm looking to get a single basket, and I have these two IMS choices (at the moment). Any thoughts on which would work better? The Baristapro has 269 holes, while the other has 253.

https://www.diecrema.de/zubehoer/siebei ... gle-by-ims
https://www.diecrema.de/zubehoer/siebei ... asse-7/9-g

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baldheadracing
Team HB

#1436: Post by baldheadracing »

-"Good quality brings happiness as you use it" - Nobuho Miya, Kamasada

Mr_Flauschig

#1437: Post by Mr_Flauschig »

Ah, nothing is ever simple with espresso. I ended up buying a La Marzocco 7g X-filter basket, F3029X, and a 41mm tamper. Thanks for the heads up!

Flitzgordon

#1438: Post by Flitzgordon »

Marcje wrote:Hi all, I was curious about the actual extraction pressure of my Strega, so fabbed a manometer on the group head.
It was not a straight forward job, but seems to work really well.

It's plumbed so I don't use the pump, and the inner (small) spring is also removed, so the pressure is 7.5bar. I will put back the inner spring the coming weeks and do some comparsison shots. Feels like I have a new toy...

Here's what it looks like:

image


video
What's the purpose of the inner spring, any difference in tension pulling the lever without it?

It looks like you drilled though the brass right above the springs am I correct?

Can't you measure the pressure from the OPV like the regular machines? Which should be less invasive

BSdV

#1439: Post by BSdV »

Don't have the Strega but the Pro800.
Removed the inner spring a little while back, and I'm not planning to ever put it back in.
To my taste the espressos are smoother (have to admit that at the time I also upgraded the stock burrs to SSP), the lever group is very quiet now, and is much easier to pull down. Not that this was problematic before, but this is definitely nicer.
I only see upsides to removal of the inner spring, no downsides. But that depends on personal preference/taste I suppose.

I actually would like to see espresso machine shops offering to sell these espresso machines with a choice of 1 of 2 springs - as part of their service..

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baldheadracing
Team HB

#1440: Post by baldheadracing »

Flitzgordon wrote:What's the purpose of the inner spring, any difference in tension pulling the lever without it?

It looks like you drilled though the brass right above the springs am I correct?

Can't you measure the pressure from the OPV like the regular machines? Which should be less invasive
The inner spring adds about 1.5 to 2 bar to maximum extraction pressure.

The OPV on the Strega is pretty much only to prevent the HX from being damaged from overpressure. The OPV is cut off from the brew water circuit once the lever is lifted.

There is an available port available on the manifold that the OPV is connected to. A pressure gauge attached to that port gives pre-infusion pressure (assuming that the OPV doesn't open), but cannot show extraction pressure (because that hydraulic circuit is cut off from the group once the lever is lifted).
-"Good quality brings happiness as you use it" - Nobuho Miya, Kamasada