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Date: 21 Mar 2007 15:44:03
From: sfizzito
Subject: Grimac Mia's Intermittent Blasts
Hi, long-time lurker, first-time poster here.

I purchased my Mia a little over one year ago and I have been pleased
with it--until now. The Mia's pressure release valve sometimes blows
with an alarming plosive sound after the pressure gauge is pegged
clockwise in the red danger zone.

My machine is used to make 2 to 4 3-shot espressos/cappuccinos per
day, so usage is light. My Mini Mazzer has gone through about 100
pounds of coffee since I bought the Mia.

The problem with the Mia is intermittent, though it is happening more
frequently lately, so troubleshooting the source of the problem is
difficult. De-scaling seemed to help, but the problem reared its head
again only three days later. A person from where I bought the machine
suggested that it might need a new pressurestat. Sounds reasonable to
me.

But my main beef is that I would rather have a manual (and some
applied knowledge) so I can fix this thing when it inevitably breaks
down again in the future, for whatever reason. Grimac hasn't been
forthcoming with manuals, instead claiming on their website that
manuals would be "coming soon," presumably as downloadable pdf files.
This has been the case for over a year now. (http://www.grimac.net/en/
en_download.html) I checked for the Italian versions, too, but
"presto disponibili". Emails to Grimac have gone unanswered, though
it's certainly feasible that that they have been tagged as "spam" and
dumped. Still . . .

Anybody have any ideas about where I can find detailed information on
the troubleshooting and maintenance of an HX E61 machine? I would
much rather do it myself, especially if I'm going to be using it for
the next few decades (I hope). I would gladly pay for a manual, if I
could find one.

Sfizzito





 
Date: 24 Mar 2007 07:17:13
From: daveb
Subject: Re: Grimac Mia's Intermittent Blasts
On 23, 3:44 pm, "sfizzito" <sfizz...@gmail.com > wrote:
> On 23, 1:45 am, r...@math.hawaii.NOSPAM.edu (D. Ross) wrote:
>
> >


 
Date: 24 Mar 2007 07:14:48
From: daveb
Subject: Re: Grimac Mia's Intermittent Blasts

>
> This isn't *completely* correct, for example I've seen parts and electrical
> system manuals available for the , a nice
> complete manual for the , and my came with a pretty
> good service manual. Right now there's someone on eBay selling a
> - David R.
> --
> Less information than you ever thought possible

Always an exception to every statement. but hey, nice to know.

Given the suit happy state of affairs in the world, especially in the
US, who can blame mfrs. for protecting themselves.

and really the only thing you will need to replace with any frequency
on an HX are pressurestats, which is simple.

Dave



  
Date:
From:
Subject:


  
Date: 24 Mar 2007 13:59:18
From: sprsso
Subject: Re: Grimac Mia's Intermittent Blasts
I have the service manuals for the M50, 51, 52, M3, M2, unic
machines, some NS stuff and the troubleshooting guides for techs are
pretty much limited to reading error codes in the display or
interpreting flashing lights. I have yet to see one that tells you how
to diagnose a puddle under the machine, water leaking from the HP
relief valve, arced pressurestats, clogged gicleurs, getting the crap
shocked out of you by the frame, faulty flowmeters and eye
electrocution. Perhaps we are confusing technical manuals with
electrical and hydraulic schematics, which are widely available.
Schematics are only as good as the person reading them.
And I've changed out a lot more than Pstats on HX machines....al

On 24 2007 07:14:48 -0700, "daveb" <davebobblane@gmail.com > wrote:

>
>>
>> This isn't *completely* correct, for example I've seen parts and electrical
>> system manuals available for the , a nice
>> complete manual for the , and my came with a pretty
>> good service manual. Right now there's someone on eBay selling a
>> - David R.
>> --
>> Less information than you ever thought possible
>
>Always an exception to every statement. but hey, nice to know.
>
>Given the suit happy state of affairs in the world, especially in the
>US, who can blame mfrs. for protecting themselves.
>
>and really the only thing you will need to replace with any frequency
>on an HX are pressurestats, which is simple.
>
>Dave



 
Date: 23 Mar 2007 12:54:05
From: sfizzito
Subject: Re: Grimac Mia's Intermittent Blasts
On 23, 2:44 pm, "sfizzito" <sfizz...@gmail.com > wrote:
> On 23, 1:45 am, r...@math.hawaii.NOSPAM.edu (D. Ross) wrote:
>
> >


  
Date: 23 Mar 2007 16:28:16
From: sprsso
Subject: Re: Grimac Mia's Intermittent Blasts
On 23 2007 12:54:05 -0700, "sfizzito" <sfizzito@gmail.com > wrote:

That would be basically correct. Even the operations manuals are
mostly undecipherable. Your problem would not likely addressed in a
technicians manual anyway. I've never seen it.
Perhaps we should write one....al


>Update: I talked to a service tech at EPNW, and he said there is no
>such thing as repair manuals for commercial espresso machines
>available to the public, since manufacturers wants qualified
>technicians to service their machines. He said this was true of all
>machines, not just the Grimac machines.



   
Date: 24 Mar 2007 02:38:55
From: D. Ross
Subject: Re: Grimac Mia's Intermittent Blasts


 
Date: 23 Mar 2007 12:44:21
From: sfizzito
Subject: Re: Grimac Mia's Intermittent Blasts
On 23, 1:45 am, r...@math.hawaii.NOSPAM.edu (D. Ross) wrote:
>


 
Date: 22 Mar 2007 14:21:18
From: Jack Denver
Subject: Re: Grimac Mia's Intermittent Blasts
This definitely sounds like a sticky pressurestat. My Oscar used to suffer
from this affliction and the cure (a new mini pressurestat) would last only
around a year before it returned. I've switched to a PID and my safety
valve has not blown once since. If your machine has a full size Sirai
pressurestat you can replace parts (the diaphragm) but the minis are not
serviceable - all you can do is swap them.


You could try turning the pstat down a little but this may cool your machine
beyond where you want it to be and rarely works anyway.


"sfizzito" <sfizzito@gmail.com > wrote in message
news:1174517043.129549.74170@e1g2000hsg.googlegroups.com...
> Hi, long-time lurker, first-time poster here.
>
> I purchased my Mia a little over one year ago and I have been pleased
> with it--until now. The Mia's pressure release valve sometimes blows
> with an alarming plosive sound after the pressure gauge is pegged
> clockwise in the red danger zone.
>
> My machine is used to make 2 to 4 3-shot espressos/cappuccinos per
> day, so usage is light. My Mini Mazzer has gone through about 100
> pounds of coffee since I bought the Mia.
>
> The problem with the Mia is intermittent, though it is happening more
> frequently lately, so troubleshooting the source of the problem is
> difficult. De-scaling seemed to help, but the problem reared its head
> again only three days later. A person from where I bought the machine
> suggested that it might need a new pressurestat. Sounds reasonable to
> me.
>
> But my main beef is that I would rather have a manual (and some
> applied knowledge) so I can fix this thing when it inevitably breaks
> down again in the future, for whatever reason. Grimac hasn't been
> forthcoming with manuals, instead claiming on their website that
> manuals would be "coming soon," presumably as downloadable pdf files.
> This has been the case for over a year now. (http://www.grimac.net/en/
> en_download.html) I checked for the Italian versions, too, but
> "presto disponibili". Emails to Grimac have gone unanswered, though
> it's certainly feasible that that they have been tagged as "spam" and
> dumped. Still . . .
>
> Anybody have any ideas about where I can find detailed information on
> the troubleshooting and maintenance of an HX E61 machine? I would
> much rather do it myself, especially if I'm going to be using it for
> the next few decades (I hope). I would gladly pay for a manual, if I
> could find one.
>
> Sfizzito
>
>




 
Date: 22 Mar 2007 08:23:42
From: sfizzito
Subject: Re: Grimac Mia's Intermittent Blasts

> From whom did you buy the machine? If you went with a 'serious' dealer they
> should be able to help you out.
>
> - David R.

Hi David,

I bought it from EspressoPartsNW, and they have been helpful. Let me
be clear: they are good people and I have had good experiences with
them. They also suggested I replace the pressurestat.

My fundamental request is for a *&^% manual. I would rather fix
problems myself, bearing in mind that this won't be the last time the
Mia will need its covers taken off. The idea of shipping the machine
via truck'n'crate, like it was shipped to me, just isn't an option
($90 each way) every time I have a significant problem with the Mia.

I'm attempting to cobble together as much info as I can on E61 HX
machines from what I can find on the Internet, but it would sure be
nice to get a real manual. I can read electronic schematics and I'm a
ham radio operator, for all that's worth, so I'm not totally clueless
when presented with the task of fixing electromechanical gear. Since
these machines are so similar, maybe this can be a collaborative
effort?

SssPop!sputter




  
Date: 23 Mar 2007 06:45:25
From: D. Ross
Subject: Re: Grimac Mia's Intermittent Blasts


 
Date: 22 Mar 2007 07:59:39
From: sfizzito
Subject: Re: Grimac Mia's Intermittent Blasts
On 21, 8:55 pm, "daveb" <davebobbl...@gmail.com > wrote:
> change the pressurestat
>
> look at the old one and screw in a new one of the same type.
>
> sooner rather than later.
>
> Dave
> 221

Thanks, Dave, will do.

SssBang!



 
Date: 22 Mar 2007 02:48:18
From: D. Ross
Subject: Re: Grimac Mia's Intermittent Blasts
"sfizzito" <sfizzito@gmail.com > wrote:



 
Date: 21 Mar 2007 21:55:52
From: daveb
Subject: Re: Grimac Mia's Intermittent Blasts
change the pressurestat

look at the old one and screw in a new one of the same type.

sooner rather than later.

Dave
221




"sfizzito" <sfizzito@gmail.com > wrote in message
news:1174517043.129549.74170@e1g2000hsg.googlegroups.com...
> Hi, long-time lurker, first-time poster here.
>
> I purchased my Mia a little over one year ago and I have been pleased
> with it--until now. The Mia's pressure release valve sometimes blows
> with an alarming plosive sound after the pressure gauge is pegged
> clockwise in the red danger zone.
>
> My machine is used to make 2 to 4 3-shot espressos/cappuccinos per
> day, so usage is light. My Mini Mazzer has gone through about 100
> pounds of coffee since I bought the Mia.
>
> The problem with the Mia is intermittent, though it is happening more
> frequently lately, so troubleshooting the source of the problem is
> difficult. De-scaling seemed to help, but the problem reared its head
> again only three days later. A person from where I bought the machine
> suggested that it might need a new pressurestat. Sounds reasonable to
> me.
>
> But my main beef is that I would rather have a manual (and some
> applied knowledge) so I can fix this thing when it inevitably breaks
> down again in the future, for whatever reason. Grimac hasn't been
> forthcoming with manuals, instead claiming on their website that
> manuals would be "coming soon," presumably as downloadable pdf files.
> This has been the case for over a year now. (http://www.grimac.net/en/
> en_download.html) I checked for the Italian versions, too, but
> "presto disponibili". Emails to Grimac have gone unanswered, though
> it's certainly feasible that that they have been tagged as "spam" and
> dumped. Still . . .
>
> Anybody have any ideas about where I can find detailed information on
> the troubleshooting and maintenance of an HX E61 machine? I would
> much rather do it myself, especially if I'm going to be using it for
> the next few decades (I hope). I would gladly pay for a manual, if I
> could find one.
>
> Sfizzito
>