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Date: 16 Aug 2007 14:39:47
From: Robert Harmon
Subject: modding: convert auto to semi-auto
Here's something for the modders to chew on.

A friend (??) brought over an ailing automatic & wants me to fix it on the
cheap. Turns out it has a bad touch-pad which he doesn't want to replace
($167, so I can't fault him). Since it also has a couple of leaks that could
use patching and a few other small things that could use some work, I'm
considering making this into a project and converting it to a semi-auto.

I figure to replace the touch pad with a single rocker switch, remove the
flow control valve, and maybe replace the fresh water inlet 3-way solenoid
valve with a manual valve. What I'm not sure about is what to do with the
auto-fill circuitry.

Here's a link with what I plan on doing: http://tinyurl.com/2g3dtn. Any
suggestions?
--
Robert Harmon
--
http://www.tinyurl.com/mb4uj - My coffee pages.

http://www.tinyurl.com/2tnv87 - My 'Guidelines For Newbies' page.

http://www.tinyurl.com/2cr3e2 - I have things for sale here.






 
Date: 18 Aug 2007 16:30:55
From: Barry Jarrett
Subject: Re: modding: convert auto to semi-auto
On Thu, 16 Aug 2007 14:39:47 -0500, "Robert Harmon"
<Texas_Coffee@earthlink.net > wrote:

>I figure to replace the touch pad with a single rocker switch, remove the
>flow control valve, and maybe replace the fresh water inlet 3-way solenoid
>valve with a manual valve. What I'm not sure about is what to do with the
>auto-fill circuitry.
>
>Here's a link with what I plan on doing: http://tinyurl.com/2g3dtn. Any
>suggestions?


the water inlet solenoid shouldn't be a 3-way.... unless it's unlike
anything i've seen.

don't get rid of autofill. get a gicar autofill box to replace the
brain.

fwiw, i'm in the process of converting two Marzoccos from auto to
semi-auto. it's not hard, but it's simple, either.

i also just converted a manually activated pavoni (with the manual
magnet "solenoid" valve) to an electric solenoid and a brew switch
(instead of the lever). it's heating up in back right now.





 
Date: 16 Aug 2007 16:45:47
From: Jack Denver
Subject: Re: modding: convert auto to semi-auto
Don't throw out the baby with the bathwater. I can understand getting rid
of the touch pad and flow meter but keep the solenoids and autofill. I
assume these run off the "brain box" and are independent of the dosing
system.




"Robert Harmon" <Texas_Coffee@earthlink.net > wrote in message
news:13c9a013vdn2k91@corp.supernews.com...
> Here's something for the modders to chew on.
>
> A friend (??) brought over an ailing automatic & wants me to fix it on the
> cheap. Turns out it has a bad touch-pad which he doesn't want to replace
> ($167, so I can't fault him). Since it also has a couple of leaks that
> could use patching and a few other small things that could use some work,
> I'm considering making this into a project and converting it to a
> semi-auto.
>
> I figure to replace the touch pad with a single rocker switch, remove the
> flow control valve, and maybe replace the fresh water inlet 3-way solenoid
> valve with a manual valve. What I'm not sure about is what to do with the
> auto-fill circuitry.
>
> Here's a link with what I plan on doing: http://tinyurl.com/2g3dtn. Any
> suggestions?
> --
> Robert Harmon
> --
> http://www.tinyurl.com/mb4uj - My coffee pages.
>
> http://www.tinyurl.com/2tnv87 - My 'Guidelines For Newbies' page.
>
> http://www.tinyurl.com/2cr3e2 - I have things for sale here.
>




  
Date: 16 Aug 2007 21:42:14
From: Robert Harmon
Subject: Re: modding: convert auto to semi-auto

Howdy Jack!
I'll think about the auto-fill - it is a good feature for absent minded
folks.

I was just wondering if I'd need the *brain* box at all if I put a PID in
it, got rid of the pstat, flow-meter, and the auto-fill. Sure would make
for a simpler machine (this is used in a donut shop with low volume
machine use).

If I did go with the manual valve I'd reroute the valve to the side of
the machine & rig a better water level tube (almost impossible to see the
ones on Simonelli machines).

Robert Harmon
--
http://www.tinyurl.com/mb4uj - My coffee pages.
http://www.tinyurl.com/2tnv87 - My 'Guidelines For Newbies' page.
http://www.tinyurl.com/2cr3e2 - I have things for sale here.

Remove "ZED" from address if replying by email.

"Jack Denver" <nunuvyer@netscape.net > wrote in
news:dJmdna5df7fmKlnbnZ2dnUVZ_q-jnZ2d@comcast.com:

> Don't throw out the baby with the bathwater. I can understand getting
> rid of the touch pad and flow meter but keep the solenoids and
> autofill. I assume these run off the "brain box" and are independent
> of the dosing system.
>
>
>
>
> "Robert Harmon" <Texas_Coffee@earthlink.net> wrote in message
> news:13c9a013vdn2k91@corp.supernews.com...
>> Here's something for the modders to chew on.
>>
>> A friend (??) brought over an ailing automatic & wants me to fix it
>> on the cheap. Turns out it has a bad touch-pad which he doesn't want
>> to replace ($167, so I can't fault him). Since it also has a couple
>> of leaks that could use patching and a few other small things that
>> could use some work, I'm considering making this into a project and
>> converting it to a semi-auto.
>>
>> I figure to replace the touch pad with a single rocker switch, remove
>> the flow control valve, and maybe replace the fresh water inlet 3-way
>> solenoid valve with a manual valve. What I'm not sure about is what
>> to do with the auto-fill circuitry.
>>
>> Here's a link with what I plan on doing: http://tinyurl.com/2g3dtn.
>> Any suggestions?
>> --
>> Robert Harmon
>> --
>> http://www.tinyurl.com/mb4uj - My coffee pages.
>>
>> http://www.tinyurl.com/2tnv87 - My 'Guidelines For Newbies' page.
>>
>> http://www.tinyurl.com/2cr3e2 - I have things for sale here.
>>
>
>
>


   
Date: 17 Aug 2007 18:18:35
From: Danny
Subject: Re: modding: convert auto to semi-auto
Robert Harmon wrote:
> Howdy Jack!
> I'll think about the auto-fill - it is a good feature for absent minded
> folks.
>
> I was just wondering if I'd need the *brain* box at all if I put a PID in
> it, got rid of the pstat, flow-meter, and the auto-fill. Sure would make
> for a simpler machine (this is used in a donut shop with low volume
> machine use).
>
> If I did go with the manual valve I'd reroute the valve to the side of
> the machine & rig a better water level tube (almost impossible to see the
> ones on Simonelli machines).
>
> Robert Harmon

I'd never have a manual fill in any sort of commercial environment.

--
Regards, Danny

http://www.gaggia-espresso.com (a purely hobby site)
(apparently bad grammar but I like it that way...)



    
Date: 17 Aug 2007 12:28:14
From: Robert Harmon
Subject: Re: modding: convert auto to semi-auto
Howdy Danny!
It's beginning to sink in and the auto-fill stays. Thanks everyone!

BTW Danny: When's the next edition of your "field" due?
--
Robert Harmon
--
http://www.tinyurl.com/mb4uj - My coffee pages.

http://www.tinyurl.com/2tnv87 - My 'Guidelines For Newbies' page.

http://www.tinyurl.com/2cr3e2 - I have things for sale here.
"Danny" <danny@nospam.gaggia-espresso.com > wrote in message
news:5im3ivF3p5t22U1@mid.individual.net...
> Robert Harmon wrote:
>> Howdy Jack!
>> I'll think about the auto-fill - it is a good feature for absent minded
>> folks.
>>
>> I was just wondering if I'd need the *brain* box at all if I put a PID in
>> it, got rid of the pstat, flow-meter, and the auto-fill. Sure would make
>> for a simpler machine (this is used in a donut shop with low volume
>> machine use). If I did go with the manual valve I'd reroute the valve to
>> the side of the machine & rig a better water level tube (almost
>> impossible to see the ones on Simonelli machines).
>>
>> Robert Harmon
>
> I'd never have a manual fill in any sort of commercial environment.
>
> --
> Regards, Danny
>
> http://www.gaggia-espresso.com (a purely hobby site)
> (apparently bad grammar but I like it that way...)
>