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jyl jyl is offline
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It doesn't look as bad as I feared. The innards are cleaning up pretty easily, the rust and scale are superficial (edit: um not entirey) and with a couple exceptions all the parts seem present, although there are some bodgy things too.
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1989 3.2 Carrera coupe
1988 Westy Vanagon, Zetec conversion
Really want to find a clean E28 . . .

Last edited by jyl; 12-04-2018 at 12:36 PM..
Old 11-23-2018, 04:27 PM
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Quote:
Originally Posted by Gogar View Post
https://www.espressocare.com/schematic-pdf-links

Here’s some schematics!

I think you’re “modern 2-group.”
A million thanks!
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1989 3.2 Carrera coupe
1988 Westy Vanagon, Zetec conversion
Really want to find a clean E28 . . .
Old 11-23-2018, 04:47 PM
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Or maybe "sixties 2 group." Anyway.
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Old 11-23-2018, 04:55 PM
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Go to Home-Barista.com and pose the same question. Changes are someone will be able to tell you what to look for and how to test it. You would have to plumb it or connect a water container via flo-jet, but this might be pretty cool to play with.
Old 11-23-2018, 06:33 PM
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I wonder if it running on 60 hz instead of 50 hz would cause some negative effects after a while. Of course if the power is just used for heating, maybe it's moot.
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Last edited by Evans, Marv; 11-23-2018 at 09:27 PM..
Old 11-23-2018, 07:54 PM
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Test resistance across the heating elements...
Keep in mind that most of those fittings are BSP thread.

The Slayer's claim to fame is long preinfusion/low pressure extraction. One of few machines in the semiauto world that can. I mimic it with a Breville DB by setting it for a 15 sec preinfusion at 50% power.
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Old 11-24-2018, 06:40 AM
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Quote:
Originally Posted by greglepore View Post
Test resistance across the heating elements...
Keep in mind that most of those fittings are BSP thread.

The Slayer's claim to fame is long preinfusion/low pressure extraction. One of few machines in the semiauto world that can. I mimic it with a Breville DB by setting it for a 15 sec preinfusion at 50% power.
21 ohms across the lower two terminals


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1989 3.2 Carrera coupe
1988 Westy Vanagon, Zetec conversion
Really want to find a clean E28 . . .
Old 11-24-2018, 11:45 AM
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I'd pull it and stick a flashlight in there and see if you have a sludge of gooey gray slime in the bottom of the boiler.

My simonelli came from the west coast (who knows where) and the boilers were full of scale tall enough that it touched the heating element and it corroded and totally fell apart.
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Old 11-24-2018, 12:34 PM
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My brother also has a huge industrial machine in VT, in his kitchen... where theres time for such zaniness and the nearest good barista is 40 min drive away.. huge thing is hooked up to a timer so it turns on at five am ignorer to be fully pressurized by 6:45 or something crazy like that...it eats a lot of 'real-estate' in his kitchen but its kinda cool he has his cafe-corner.. Makes me a great cuppa when I am there and then we work on 'over - caffeinated' projects, like splitting wood or going for 32 mile bike ride through the woods, not always on a trail... usually there is a swamp involved or a rocky ravine.
I say hook it up if you have the skills and start to enjoy being your own barista.
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Old 11-24-2018, 06:31 PM
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I pulled the heating element which looks pretty clean. The boiler had about an inch of water - which has been in there for at least 5 years - and the bottom was covered with a sort of silt. I disassembled the whole thing, removed all the hard lines except a few that won't come off. I'm going to descale everything with a bath of hot water and something - CLR? Maybe I'll buy one of those cheap Chinese 10L ultrasonic tanks on eBay. I think I'll buy a Harbor Freight buffing wheel and shine up the boiler and lines. The frame is nasty and rusty, more than I want to deal with using a wire wheel. I'll send that off to be blasted and powder coated. Then I'll get a gasket and o-ring kit from Stefano's Espresso Care and put everything back together. I want to start testing and troubleshooting with a clean machine. Most of the solenoids, flowmeters, fittings, pressure valves, pumps, motors, capacitor, etc are available. The things that are hard to find are the electronic keypads and boiler, so hopefully those are okay. We'll see.
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1989 3.2 Carrera coupe
1988 Westy Vanagon, Zetec conversion
Really want to find a clean E28 . . .
Old 11-24-2018, 09:24 PM
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1989 3.2 Carrera coupe
1988 Westy Vanagon, Zetec conversion
Really want to find a clean E28 . . .
Old 11-24-2018, 09:26 PM
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I found cheap Chinese ultrasonic heat tanks like https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F17 2881976656

Anyone used these ultrasonic tanks? Is an ultrasonic tank useful to have around?
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1989 3.2 Carrera coupe
1988 Westy Vanagon, Zetec conversion
Really want to find a clean E28 . . .

Last edited by jyl; 11-25-2018 at 08:08 AM..
Old 11-25-2018, 08:06 AM
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Cool!

CLR and a metal pot cleaning pad and metal brush would probably be great on the visible stuff.

I bet it'll be great! From experience my only suggestion is you make sure to check all the wiring (especially those terminals on the element) for deterioration from heat. A connection that shows continuity may still not be able to handle the current.

Don't be afraid to disassemble the solenoids and make sure they are moving freely. Don't mix and match parts from one solenoid to another.

Do steam and hot water come from the same boiler?
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Old 11-25-2018, 08:23 AM
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Can a machine like this be rewired to use 110?
Old 11-25-2018, 09:16 AM
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Probably would draw too much amperage on 110V. That's the reason I didn't go for electric tankless water heaters. They drew 160A at full tilt.
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Old 11-25-2018, 09:56 AM
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The water for the espresso passes through heat exchangers in the boiler and circulates through the HX and the group head. The steam comes from the boiler. The hot water tap also draws from the boiler, but that valve is missing and the location has been blanked off. New complete valve assemblies are quite spendy ($500) but perhaps I'll find a used one or maybe maybe it's not important to have a hot water tap.

I took pictures of the inside of the boiler and HX. Looks not too bad, at least no stalactites of lime.
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1989 3.2 Carrera coupe
1988 Westy Vanagon, Zetec conversion
Really want to find a clean E28 . . .
Old 11-25-2018, 12:42 PM
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Hot water from the boiler of a hx machine is GROSS. Only useful for rinsing stuff. It doesn't exchange often.

Those little ultrasonics are really useful for cleaning bike parts-chains, cassettes, whatever you want to get sparkling.
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Old 11-25-2018, 01:30 PM
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You think I don't need the hot water tap then? It is missing, that spot
on the faceplate was filled with a blanking plate. Replacement valves are $500!
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1989 3.2 Carrera coupe
1988 Westy Vanagon, Zetec conversion
Really want to find a clean E28 . . .
Old 11-25-2018, 02:42 PM
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That goo is not too bad. Maybe the PO didn’t filter the water. Or maybe that represents the whole life of the unit!
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1973 Honda CB350F
Old 11-25-2018, 03:50 PM
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Bet you could find a replacement or improvise on the hot water tap for a lot less than $500. I think you're a prime example of a bunch of the participants on this board. People who can't resist taking something apart and rebuilding it out of curiosity and for the satisfaction of just doing it. Kudos to you.
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Old 11-25-2018, 03:56 PM
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