| |
Main
Date: 15 Feb 2007 10:16:25
From: wes
Subject: help with HX machine- is my pressurestat sticking?
|
Hi,
I am the 2nd owner of an Expobar Pulser HX machine, and it's been
acting up a litte lately.
Twice in the last few weeks I've found the machine making a constant
hissing sound, and all the cups on the top were filled with steam
coming up from inside the machine. If I pull water out of the boiler
through the hot water tap it's really hot, more than normal.
The first time, after I pulled water out of the boiler and the machine
was heating up again, all the sudden it made a loud "pop", then the
hissing stopped and the machine worked normally.
Today it was doing the same thing and I shut it off for a few hours.
When I turned it back on, it started hissing after warming up, then
made the "Pop", the hissing stopped, and now it seems normal.
I think my pressurestat is stuck open and then the pressure release
valve is opening up when the boiler is overheating, and then the
pressurestat eventually closes, creating the "pop"
I'm going to look into a new pressurestat from Chris Coffee, but
wanted to make sure I'm not missing something:
1. Is it likely to be anything different?
2. Can you service a pressurestat, like clean it or anything so it
doesn't stick?
I know this is the 2nd pressurestat in the machine, the original owner
had to replace one. I leave the machine on about 17 hours a day (it's
on a timer)
Thanks!
Wes
|
|
| |
Date: 17 Feb 2007 12:58:51
From: wes
Subject: Re: help with HX machine- is my pressurestat sticking?
|
On Feb 17, 5:54 am, Danny <d...@nospam.gaggia-espresso.com > wrote:
> wes wrote:
> > It's resolved as far as I'm concerned, although I appreciate all the
> > help. When vacuum breaker sticks, you don't get any pressure in the
> > boiler, that's the common wake up and your machine is cold scenario.
>
> > All the steam is caused by al's explanation. . .
>
> > Thanks, guys, case closed, I guess! I'll report when I swap the new
> > one in.
>
> In your case you may be right, but you are wrong wrt pressure valve
> problems. They can fail in a partial way - leaking steam when at
> pressure until they eventually seat themselves - both pressure valves
> and false pressure valves can do this. The ageing fpv on one of my
> machines regularly lets some steam out after it's finished coming to
> pressure until it seals itself, and thats at the normal 1.2 bar pressure.
>
> --
> Regards, Danny
>
> http://www.gaggia-espresso.com(a purely hobby site)
Danny,
Thanks for the clarification. I suppose when (if?) the symptoms
reappear, I can pull the top off and see which part is leaking. Then
again, if I replace the pstat and the symptoms reappear then it's the
vacuum breaker, huh?
Thanks for chiming in, alt.coffee is such a great resource.
Wes
|
| |
Date: 16 Feb 2007 18:17:02
From: wes
Subject: Re: help with HX machine- is my pressurestat sticking?
|
On Feb 16, 7:53 pm, sprsso <acrit...@cfl.rr.com > wrote:
> I thought this had been resolved already. If your pressurestat is like
> the common Sirai variety, it is a set of points/contacts that are
> sticking in the closed position. Due to either arcing of the points or
> weakening of the diaphragm. Usually your high pressure relief valve is
> set to blow off at 1.6bar and will pop as you mention. As it weakens
> it will leak continuously at 1.4bar and above.
> Sometimes the problem can be resolved by cleaning the contacts on the
> pressurestat with emory boards or the like, but if Dave is sending you
> a new one that should do it....al
>
> On 16 Feb 2007 14:39:00 -0800, "wes" <wnan...@rochester.rr.com> wrote:
>
>
>
> >On Feb 16, 4:48 am, "CrackAddict" <smp...@gmail.com> wrote:
> >> > I think my pressurestat is stuck open and then the pressure release
> >> > valve is opening up when the boiler is overheating, and then the
> >> > pressurestat eventually closes, creating the "pop"
>
> >> Might it not just be the vacuum relief valve sticking? This is a
> >> pretty common problem and on the Expobar would leak steam right under
> >> the cups. These things get sticky sometimes and don't seat properly,
> >> so the pressure vents out the valve and never really builds up
> >> properly. Maybe something to check.
>
> >Thanks for the idea, but I don't think that's it. There is definitely
> >an abundance of pressure build up, much higher than normal, which
> >would be the opposite if the vaccuum breaker was stuck open. I'm sure
> >it's the p-stat sticking running the boiler wide open.- Hide quoted text -
>
> - Show quoted text -
It's resolved as far as I'm concerned, although I appreciate all the
help. When vacuum breaker sticks, you don't get any pressure in the
boiler, that's the common wake up and your machine is cold scenario.
All the steam is caused by al's explanation. . .
Thanks, guys, case closed, I guess! I'll report when I swap the new
one in.
|
| | |
Date: 17 Feb 2007 10:54:21
From: Danny
Subject: Re: help with HX machine- is my pressurestat sticking?
|
wes wrote:
> It's resolved as far as I'm concerned, although I appreciate all the
> help. When vacuum breaker sticks, you don't get any pressure in the
> boiler, that's the common wake up and your machine is cold scenario.
>
> All the steam is caused by al's explanation. . .
>
> Thanks, guys, case closed, I guess! I'll report when I swap the new
> one in.
>
In your case you may be right, but you are wrong wrt pressure valve
problems. They can fail in a partial way - leaking steam when at
pressure until they eventually seat themselves - both pressure valves
and false pressure valves can do this. The ageing fpv on one of my
machines regularly lets some steam out after it's finished coming to
pressure until it seals itself, and thats at the normal 1.2 bar pressure.
--
Regards, Danny
http://www.gaggia-espresso.com (a purely hobby site)
|
| |
Date: 16 Feb 2007 15:43:20
From: jgriff
Subject: Re: help with HX machine- is my pressurestat sticking?
|
I agree with CrackAddict. It seems like a sticky vacuum breaker valve.
What about having the pstat stuck open would cause all of that steam
to come up and fill the cups on top of the machine? And couldn't the
loud "pop" sound be the vacuum breaker valve finally snapping shut?
You don't have a boiler pressure gauge on your Pulser to tell you what
the pressure is, do you? Not to discount dave's advice, but why don't
you just call Chris Coffee, tell them what's going and see what they
say?
My $.02. Good luck.
|
| |
Date: 16 Feb 2007 14:39:00
From: wes
Subject: Re: help with HX machine- is my pressurestat sticking?
|
On Feb 16, 4:48 am, "CrackAddict" <smp...@gmail.com > wrote:
> > I think my pressurestat is stuck open and then the pressure release
> > valve is opening up when the boiler is overheating, and then the
> > pressurestat eventually closes, creating the "pop"
>
> Might it not just be the vacuum relief valve sticking? This is a
> pretty common problem and on the Expobar would leak steam right under
> the cups. These things get sticky sometimes and don't seat properly,
> so the pressure vents out the valve and never really builds up
> properly. Maybe something to check.
Thanks for the idea, but I don't think that's it. There is definitely
an abundance of pressure build up, much higher than normal, which
would be the opposite if the vaccuum breaker was stuck open. I'm sure
it's the p-stat sticking running the boiler wide open.
|
| | |
Date: 16 Feb 2007 19:53:10
From: sprsso
Subject: Re: help with HX machine- is my pressurestat sticking?
|
I thought this had been resolved already. If your pressurestat is like
the common Sirai variety, it is a set of points/contacts that are
sticking in the closed position. Due to either arcing of the points or
weakening of the diaphragm. Usually your high pressure relief valve is
set to blow off at 1.6bar and will pop as you mention. As it weakens
it will leak continuously at 1.4bar and above.
Sometimes the problem can be resolved by cleaning the contacts on the
pressurestat with emory boards or the like, but if Dave is sending you
a new one that should do it....al
On 16 Feb 2007 14:39:00 -0800, "wes" <wnance3@rochester.rr.com > wrote:
>On Feb 16, 4:48 am, "CrackAddict" <smp...@gmail.com> wrote:
>> > I think my pressurestat is stuck open and then the pressure release
>> > valve is opening up when the boiler is overheating, and then the
>> > pressurestat eventually closes, creating the "pop"
>>
>> Might it not just be the vacuum relief valve sticking? This is a
>> pretty common problem and on the Expobar would leak steam right under
>> the cups. These things get sticky sometimes and don't seat properly,
>> so the pressure vents out the valve and never really builds up
>> properly. Maybe something to check.
>
>Thanks for the idea, but I don't think that's it. There is definitely
>an abundance of pressure build up, much higher than normal, which
>would be the opposite if the vaccuum breaker was stuck open. I'm sure
>it's the p-stat sticking running the boiler wide open.
|
| | | |
Date: 16 Feb 2007 21:16:01
From: Jack Denver
Subject: Re: help with HX machine- is my pressurestat sticking?
|
The mini style Pstats don't have contacts that you can clean like a Sirai -
the switch part is sealed. Then again, the contacts aren't what breaks -
it's the diaphragm part (also not replaceable) that goes. Sometimes it
helps to descale them but usually scale is what is keeping them sealed and
descaling them causes them to leak. All in all the best (usually only) thing
you can do with a mini-pstat is replace it - preferably with a PID setup.
My Oscar used to eat thru mini-psats annually - possibly because it is not
configured in the pstat manufacturer's recommended configuration where the
pstat sits on top of a J tube that creates a water trap to buffer the
diaphragm from the live steam with a little cushion of water. Since I went
PID, no more annual replacements.
"sprsso" <acritzer@cfl.rr.com > wrote in message
news:gtjct2hlmqs2qipvdivc5pmc1o9fbck9q3@4ax.com...
>I thought this had been resolved already. If your pressurestat is like
> the common Sirai variety, it is a set of points/contacts that are
> sticking in the closed position. Due to either arcing of the points or
> weakening of the diaphragm. Usually your high pressure relief valve is
> set to blow off at 1.6bar and will pop as you mention. As it weakens
> it will leak continuously at 1.4bar and above.
> Sometimes the problem can be resolved by cleaning the contacts on the
> pressurestat with emory boards or the like, but if Dave is sending you
> a new one that should do it....al
>
>
> On 16 Feb 2007 14:39:00 -0800, "wes" <wnance3@rochester.rr.com> wrote:
>
>>On Feb 16, 4:48 am, "CrackAddict" <smp...@gmail.com> wrote:
>>> > I think my pressurestat is stuck open and then the pressure release
>>> > valve is opening up when the boiler is overheating, and then the
>>> > pressurestat eventually closes, creating the "pop"
>>>
>>> Might it not just be the vacuum relief valve sticking? This is a
>>> pretty common problem and on the Expobar would leak steam right under
>>> the cups. These things get sticky sometimes and don't seat properly,
>>> so the pressure vents out the valve and never really builds up
>>> properly. Maybe something to check.
>>
>>Thanks for the idea, but I don't think that's it. There is definitely
>>an abundance of pressure build up, much higher than normal, which
>>would be the opposite if the vaccuum breaker was stuck open. I'm sure
>>it's the p-stat sticking running the boiler wide open.
>
|
| | | | |
Date: 17 Feb 2007 06:44:03
From: sprsso
Subject: Re: help with HX machine- is my pressurestat sticking?
|
Thanks for the explanation. I have almost zero experience with home
machines. Reading this group over the years makes me thankful of that.
Fortunately basic principles usually apply even with different
parts....al
On Fri, 16 Feb 2007 21:16:01 -0500, "Jack Denver"
<nunuvyer@netscape.net > wrote:
>The mini style Pstats don't have contacts that you can clean like a Sirai -
>the switch part is sealed. Then again, the contacts aren't what breaks -
>it's the diaphragm part (also not replaceable) that goes. Sometimes it
>helps to descale them but usually scale is what is keeping them sealed and
>descaling them causes them to leak. All in all the best (usually only) thing
>you can do with a mini-pstat is replace it - preferably with a PID setup.
>My Oscar used to eat thru mini-psats annually - possibly because it is not
>configured in the pstat manufacturer's recommended configuration where the
>pstat sits on top of a J tube that creates a water trap to buffer the
>diaphragm from the live steam with a little cushion of water. Since I went
>PID, no more annual replacements.
>
>
>"sprsso" <acritzer@cfl.rr.com> wrote in message
>news:gtjct2hlmqs2qipvdivc5pmc1o9fbck9q3@4ax.com...
>>I thought this had been resolved already. If your pressurestat is like
>> the common Sirai variety, it is a set of points/contacts that are
>> sticking in the closed position. Due to either arcing of the points or
>> weakening of the diaphragm. Usually your high pressure relief valve is
>> set to blow off at 1.6bar and will pop as you mention. As it weakens
>> it will leak continuously at 1.4bar and above.
>> Sometimes the problem can be resolved by cleaning the contacts on the
>> pressurestat with emory boards or the like, but if Dave is sending you
>> a new one that should do it....al
>>
>>
>> On 16 Feb 2007 14:39:00 -0800, "wes" <wnance3@rochester.rr.com> wrote:
>>
>>>On Feb 16, 4:48 am, "CrackAddict" <smp...@gmail.com> wrote:
>>>> > I think my pressurestat is stuck open and then the pressure release
>>>> > valve is opening up when the boiler is overheating, and then the
>>>> > pressurestat eventually closes, creating the "pop"
>>>>
>>>> Might it not just be the vacuum relief valve sticking? This is a
>>>> pretty common problem and on the Expobar would leak steam right under
>>>> the cups. These things get sticky sometimes and don't seat properly,
>>>> so the pressure vents out the valve and never really builds up
>>>> properly. Maybe something to check.
>>>
>>>Thanks for the idea, but I don't think that's it. There is definitely
>>>an abundance of pressure build up, much higher than normal, which
>>>would be the opposite if the vaccuum breaker was stuck open. I'm sure
>>>it's the p-stat sticking running the boiler wide open.
>>
>
|
| | | | | |
Date: 17 Feb 2007 09:09:07
From: Jack Denver
Subject: Re: help with HX machine- is my pressurestat sticking?
|
I think there are some commercial machines that have gone over to the
mini-pstats, no?
"sprsso" <acritzer@cfl.rr.com > wrote in message
news:0kqdt29afg9qbjo2pv5hdj37t03kq3imcq@4ax.com...
> Thanks for the explanation. I have almost zero experience with home
> machines. Reading this group over the years makes me thankful of that.
> Fortunately basic principles usually apply even with different
> parts....al
>
>
> On Fri, 16 Feb 2007 21:16:01 -0500, "Jack Denver"
> <nunuvyer@netscape.net> wrote:
>
>>The mini style Pstats don't have contacts that you can clean like a
>>Sirai -
>>the switch part is sealed. Then again, the contacts aren't what breaks -
>>it's the diaphragm part (also not replaceable) that goes. Sometimes it
>>helps to descale them but usually scale is what is keeping them sealed and
>>descaling them causes them to leak. All in all the best (usually only)
>>thing
>>you can do with a mini-pstat is replace it - preferably with a PID setup.
>>My Oscar used to eat thru mini-psats annually - possibly because it is
>>not
>>configured in the pstat manufacturer's recommended configuration where the
>>pstat sits on top of a J tube that creates a water trap to buffer the
>>diaphragm from the live steam with a little cushion of water. Since I went
>>PID, no more annual replacements.
>>
>>
>>"sprsso" <acritzer@cfl.rr.com> wrote in message
>>news:gtjct2hlmqs2qipvdivc5pmc1o9fbck9q3@4ax.com...
>>>I thought this had been resolved already. If your pressurestat is like
>>> the common Sirai variety, it is a set of points/contacts that are
>>> sticking in the closed position. Due to either arcing of the points or
>>> weakening of the diaphragm. Usually your high pressure relief valve is
>>> set to blow off at 1.6bar and will pop as you mention. As it weakens
>>> it will leak continuously at 1.4bar and above.
>>> Sometimes the problem can be resolved by cleaning the contacts on the
>>> pressurestat with emory boards or the like, but if Dave is sending you
>>> a new one that should do it....al
>>>
>>>
>>> On 16 Feb 2007 14:39:00 -0800, "wes" <wnance3@rochester.rr.com> wrote:
>>>
>>>>On Feb 16, 4:48 am, "CrackAddict" <smp...@gmail.com> wrote:
>>>>> > I think my pressurestat is stuck open and then the pressure release
>>>>> > valve is opening up when the boiler is overheating, and then the
>>>>> > pressurestat eventually closes, creating the "pop"
>>>>>
>>>>> Might it not just be the vacuum relief valve sticking? This is a
>>>>> pretty common problem and on the Expobar would leak steam right under
>>>>> the cups. These things get sticky sometimes and don't seat properly,
>>>>> so the pressure vents out the valve and never really builds up
>>>>> properly. Maybe something to check.
>>>>
>>>>Thanks for the idea, but I don't think that's it. There is definitely
>>>>an abundance of pressure build up, much higher than normal, which
>>>>would be the opposite if the vaccuum breaker was stuck open. I'm sure
>>>>it's the p-stat sticking running the boiler wide open.
>>>
>>
>
|
| | | | | | |
Date: 17 Feb 2007 09:21:25
From: sprsso
Subject: Re: help with HX machine- is my pressurestat sticking?
|
It's possible, but I haven't seen any. Working on machines more these
days, too....al
On Sat, 17 Feb 2007 09:09:07 -0500, "Jack Denver"
<nunuvyer@netscape.net > wrote:
>I think there are some commercial machines that have gone over to the
>mini-pstats, no?
>
>
>"sprsso" <acritzer@cfl.rr.com> wrote in message
>news:0kqdt29afg9qbjo2pv5hdj37t03kq3imcq@4ax.com...
>> Thanks for the explanation. I have almost zero experience with home
>> machines. Reading this group over the years makes me thankful of that.
>> Fortunately basic principles usually apply even with different
>> parts....al
>>
>>
>> On Fri, 16 Feb 2007 21:16:01 -0500, "Jack Denver"
>> <nunuvyer@netscape.net> wrote:
>>
>>>The mini style Pstats don't have contacts that you can clean like a
>>>Sirai -
>>>the switch part is sealed. Then again, the contacts aren't what breaks -
>>>it's the diaphragm part (also not replaceable) that goes. Sometimes it
>>>helps to descale them but usually scale is what is keeping them sealed and
>>>descaling them causes them to leak. All in all the best (usually only)
>>>thing
>>>you can do with a mini-pstat is replace it - preferably with a PID setup.
>>>My Oscar used to eat thru mini-psats annually - possibly because it is
>>>not
>>>configured in the pstat manufacturer's recommended configuration where the
>>>pstat sits on top of a J tube that creates a water trap to buffer the
>>>diaphragm from the live steam with a little cushion of water. Since I went
>>>PID, no more annual replacements.
>>>
>>>
>>>"sprsso" <acritzer@cfl.rr.com> wrote in message
>>>news:gtjct2hlmqs2qipvdivc5pmc1o9fbck9q3@4ax.com...
>>>>I thought this had been resolved already. If your pressurestat is like
>>>> the common Sirai variety, it is a set of points/contacts that are
>>>> sticking in the closed position. Due to either arcing of the points or
>>>> weakening of the diaphragm. Usually your high pressure relief valve is
>>>> set to blow off at 1.6bar and will pop as you mention. As it weakens
>>>> it will leak continuously at 1.4bar and above.
>>>> Sometimes the problem can be resolved by cleaning the contacts on the
>>>> pressurestat with emory boards or the like, but if Dave is sending you
>>>> a new one that should do it....al
>>>>
>>>>
>>>> On 16 Feb 2007 14:39:00 -0800, "wes" <wnance3@rochester.rr.com> wrote:
>>>>
>>>>>On Feb 16, 4:48 am, "CrackAddict" <smp...@gmail.com> wrote:
>>>>>> > I think my pressurestat is stuck open and then the pressure release
>>>>>> > valve is opening up when the boiler is overheating, and then the
>>>>>> > pressurestat eventually closes, creating the "pop"
>>>>>>
>>>>>> Might it not just be the vacuum relief valve sticking? This is a
>>>>>> pretty common problem and on the Expobar would leak steam right under
>>>>>> the cups. These things get sticky sometimes and don't seat properly,
>>>>>> so the pressure vents out the valve and never really builds up
>>>>>> properly. Maybe something to check.
>>>>>
>>>>>Thanks for the idea, but I don't think that's it. There is definitely
>>>>>an abundance of pressure build up, much higher than normal, which
>>>>>would be the opposite if the vaccuum breaker was stuck open. I'm sure
>>>>>it's the p-stat sticking running the boiler wide open.
>>>>
>>>
>>
>
|
| | | | | | | |
Date: 17 Feb 2007 15:58:10
From: Jack Denver
Subject: Re: help with HX machine- is my pressurestat sticking?
|
I think zocco uses them on their steam boilers:
http://www.espressoparts.com/c=UCwz1Lqjr3S3eOeu1Q1tlU9rP/product/MZ_L271
This is identical to the one that is used on many home machines. When they
work they have a smaller deadband than the Sirais, but their lifespan is
nowhere close.
"sprsso" <acritzer@cfl.rr.com > wrote in message
news:do3et2lmqddau0f9km81pne54r8leqj00b@4ax.com...
> It's possible, but I haven't seen any. Working on machines more these
> days, too....al
>
> On Sat, 17 Feb 2007 09:09:07 -0500, "Jack Denver"
> <nunuvyer@netscape.net> wrote:
>
>>I think there are some commercial machines that have gone over to the
>>mini-pstats, no?
>>
>>
>>"sprsso" <acritzer@cfl.rr.com> wrote in message
>>news:0kqdt29afg9qbjo2pv5hdj37t03kq3imcq@4ax.com...
>>> Thanks for the explanation. I have almost zero experience with home
>>> machines. Reading this group over the years makes me thankful of that.
>>> Fortunately basic principles usually apply even with different
>>> parts....al
>>>
>>>
>>> On Fri, 16 Feb 2007 21:16:01 -0500, "Jack Denver"
>>> <nunuvyer@netscape.net> wrote:
>>>
>>>>The mini style Pstats don't have contacts that you can clean like a
>>>>Sirai -
>>>>the switch part is sealed. Then again, the contacts aren't what breaks -
>>>>it's the diaphragm part (also not replaceable) that goes. Sometimes it
>>>>helps to descale them but usually scale is what is keeping them sealed
>>>>and
>>>>descaling them causes them to leak. All in all the best (usually only)
>>>>thing
>>>>you can do with a mini-pstat is replace it - preferably with a PID
>>>>setup.
>>>>My Oscar used to eat thru mini-psats annually - possibly because it is
>>>>not
>>>>configured in the pstat manufacturer's recommended configuration where
>>>>the
>>>>pstat sits on top of a J tube that creates a water trap to buffer the
>>>>diaphragm from the live steam with a little cushion of water. Since I
>>>>went
>>>>PID, no more annual replacements.
>>>>
>>>>
>>>>"sprsso" <acritzer@cfl.rr.com> wrote in message
>>>>news:gtjct2hlmqs2qipvdivc5pmc1o9fbck9q3@4ax.com...
>>>>>I thought this had been resolved already. If your pressurestat is like
>>>>> the common Sirai variety, it is a set of points/contacts that are
>>>>> sticking in the closed position. Due to either arcing of the points or
>>>>> weakening of the diaphragm. Usually your high pressure relief valve is
>>>>> set to blow off at 1.6bar and will pop as you mention. As it weakens
>>>>> it will leak continuously at 1.4bar and above.
>>>>> Sometimes the problem can be resolved by cleaning the contacts on the
>>>>> pressurestat with emory boards or the like, but if Dave is sending you
>>>>> a new one that should do it....al
>>>>>
>>>>>
>>>>> On 16 Feb 2007 14:39:00 -0800, "wes" <wnance3@rochester.rr.com> wrote:
>>>>>
>>>>>>On Feb 16, 4:48 am, "CrackAddict" <smp...@gmail.com> wrote:
>>>>>>> > I think my pressurestat is stuck open and then the pressure
>>>>>>> > release
>>>>>>> > valve is opening up when the boiler is overheating, and then the
>>>>>>> > pressurestat eventually closes, creating the "pop"
>>>>>>>
>>>>>>> Might it not just be the vacuum relief valve sticking? This is a
>>>>>>> pretty common problem and on the Expobar would leak steam right
>>>>>>> under
>>>>>>> the cups. These things get sticky sometimes and don't seat properly,
>>>>>>> so the pressure vents out the valve and never really builds up
>>>>>>> properly. Maybe something to check.
>>>>>>
>>>>>>Thanks for the idea, but I don't think that's it. There is definitely
>>>>>>an abundance of pressure build up, much higher than normal, which
>>>>>>would be the opposite if the vaccuum breaker was stuck open. I'm sure
>>>>>>it's the p-stat sticking running the boiler wide open.
>>>>>
>>>>
>>>
>>
>
|
| |
Date: 16 Feb 2007 01:48:06
From: CrackAddict
Subject: Re: help with HX machine- is my pressurestat sticking?
|
>
> I think my pressurestat is stuck open and then the pressure release
> valve is opening up when the boiler is overheating, and then the
> pressurestat eventually closes, creating the "pop"
>
Might it not just be the vacuum relief valve sticking? This is a
pretty common problem and on the Expobar would leak steam right under
the cups. These things get sticky sometimes and don't seat properly,
so the pressure vents out the valve and never really builds up
properly. Maybe something to check.
|
| |
Date: 15 Feb 2007 11:48:53
From: wes
Subject: Re: help with HX machine- is my pressurestat sticking?
|
On Feb 15, 1:22 pm, "daveb" <davebobbl...@gmail.com > wrote:
> > Thanks!
>
> > Wes
>
> Yes it is the pressurestat. buy 2 -- 1 for a spare. cleaning? I have not
> heard that works too well.
>
> and don't leave it on that long -- a pstat only has a finite life -- who
> knows exactly ??
> but the more it is on and cycling, well you follow my logic....
>
> I have a whole boxful of new Maters and Cemes -- One free to Wes, sent for
> the price of postage.
>
> Dave
Email sent, Dave- thanks for the generous offer!
Wes
|
| |
Date: 15 Feb 2007 13:22:53
From: daveb
Subject: Re: help with HX machine- is my pressurestat sticking?
|
> Thanks!
>
> Wes
>
Yes it is the pressurestat. buy 2 -- 1 for a spare. cleaning? I have not
heard that works too well.
and don't leave it on that long -- a pstat only has a finite life -- who
knows exactly ??
but the more it is on and cycling, well you follow my logic....
I have a whole boxful of new Maters and Cemes -- One free to Wes, sent for
the price of postage.
Dave
|
| | |
Date: 15 Feb 2007 13:48:56
From: daveb
Subject: Re: help with HX machine- is my pressurestat sticking?
|
"daveb" <davebobblane@gmail.com > wrote in message
news:12t9985sfp79907@corp.supernews.com...
>
>> Thanks!
>>
>> Wes
>>
> Yes it is the pressurestat. buy 2 -- 1 for a spare. cleaning? I have
> not heard that works too well.
>
> and don't leave it on that long -- a pstat only has a finite life -- who
> knows exactly ??
> but the more it is on and cycling, well you follow my logic....
>
> I have a whole boxful of new Maters and Cemes -- One free to Wes, sent for
> the price of postage.
>
> Dave
>
>
>
|
|
