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Date: 14 Jun 2007 14:43:12
From:
Subject: Nuova Simonelli Oscar not hot enough...
Hello folks,

I've been a little disappointed with the Oscar over the last year or
two (I've had it about 6 years) & I recently decided to check the
water temp (low tech style, using a sugar thermometer). It said 74
degrees Celsius, which confirmed, assuming the thermometer is OK, that
it's way too cool.

So I took the top off hoping to find a temp stat, but there are two
options.

I posted a photo on a quick google web page...

http://rob.rstevenson.googlepages.com/404

Can anyone suggest how I can raise the brew temp based upon my photo?

Thanks in advance,

Rob





 
Date: 15 Jun 2007 17:37:52
From:
Subject: Re: Nuova Simonelli Oscar not hot enough...
On Jun 15, 10:33 pm, "Jack Denver" <nunuv...@netscape.net > wrote:
> Probably - some of the pstats that Oscar uses have a very small dead band.
>
> <rob...@hotmail.com> wrote in message
>
> news:1181896600.579440.28410@z28g2000prd.googlegroups.com...
>
>
>
> > On Jun 15, 10:44 am, "Jack Denver" <nunuv...@netscape.net> wrote:
> >> Why? You don't have to worry about adjusting the thermostat on a Silvia
> >> because it's non-adjustable - whatever brew temp you get from the factory
> >> is
> >> what you get unless you change the thermostat completely. Oscar is a
> >> much
> >> more complex machine so there is more to worry about but there is also
> >> more
> >> functionality - changing brew temp just means turning a screw on the
> >> pstat,
> >> but at least you CAN change it if you want to.
>
> >> However, the pstats on the Oscar can be flaky and I do recommend a PID
> >> upgrade.
>
> >> <RoqueJa> wrote in message
>
> >>news:s5a37316drp29qnsflie9asnkgq86403r5@4ax.com...
>
> >> > On Thu, 14 Jun 2007 12:56:30 -0400, "daveb" <davebobbl...@gmail.com>
> >> > wrote:
>
> >> > About four years ago I stressed over the decision to go with Oscar or
> >> > Silvia. Many, many times since I've been glad I went with Ms. S.
>
> >> > _______________________________________
> >> > Please Note: If you find a posting or message from me
> >> > offensive, inappropriate, or disruptive, please ignore it.
> >> > If you don't know how to ignore a posting, complain to
> >> > me and I will be only too happy to demonstrate.- Hide quoted text -
>
> >> - Show quoted text -
>
> > I too have been fiddling with my Oscar's pstat in the last few days
> > because the temperature appears too low. The oscar is 8 months old
> > and shots often taste sour without milk. The pstate is now adjusted
> > to 1/2 turn before the valve pops and shots seem to be improving.
>
> > During idle the heat element now stays on for only about 10 secs,
> > which is quite a bit shorter then before I adjusted the pstat. Is
> > this short cycle time normal?
>
> > Regards, Rob- Hide quoted text -
>
> - Show quoted text -

I think I must have one of these. I'm still increasing the pstat
gradually as I'm still getting shots that are a little too sour to my
taste. I'm now at less than 1/4 turn from the popping point. What
are the down sides to having the pstat sitting on the high side?
Cheers, Rob



  
Date: 15 Jun 2007 20:45:03
From: Jack Denver
Subject: Re: Nuova Simonelli Oscar not hot enough...
None other than tripping the safety once in a while when the machine sits
idle - even that is just a big puff of steam.


<rob_yg@hotmail.com > wrote in message
news:1181954272.360254.230790@q19g2000prn.googlegroups.com...
> On Jun 15, 10:33 pm, "Jack Denver" <nunuv...@netscape.net> wrote:
>> Probably - some of the pstats that Oscar uses have a very small dead
>> band.
>>
>> <rob...@hotmail.com> wrote in message
>>
>> news:1181896600.579440.28410@z28g2000prd.googlegroups.com...
>>
>>
>>
>> > On Jun 15, 10:44 am, "Jack Denver" <nunuv...@netscape.net> wrote:
>> >> Why? You don't have to worry about adjusting the thermostat on a
>> >> Silvia
>> >> because it's non-adjustable - whatever brew temp you get from the
>> >> factory
>> >> is
>> >> what you get unless you change the thermostat completely. Oscar is a
>> >> much
>> >> more complex machine so there is more to worry about but there is also
>> >> more
>> >> functionality - changing brew temp just means turning a screw on the
>> >> pstat,
>> >> but at least you CAN change it if you want to.
>>
>> >> However, the pstats on the Oscar can be flaky and I do recommend a PID
>> >> upgrade.
>>
>> >> <RoqueJa> wrote in message
>>
>> >>news:s5a37316drp29qnsflie9asnkgq86403r5@4ax.com...
>>
>> >> > On Thu, 14 Jun 2007 12:56:30 -0400, "daveb" <davebobbl...@gmail.com>
>> >> > wrote:
>>
>> >> > About four years ago I stressed over the decision to go with Oscar
>> >> > or
>> >> > Silvia. Many, many times since I've been glad I went with Ms. S.
>>
>> >> > _______________________________________
>> >> > Please Note: If you find a posting or message from me
>> >> > offensive, inappropriate, or disruptive, please ignore it.
>> >> > If you don't know how to ignore a posting, complain to
>> >> > me and I will be only too happy to demonstrate.- Hide quoted text -
>>
>> >> - Show quoted text -
>>
>> > I too have been fiddling with my Oscar's pstat in the last few days
>> > because the temperature appears too low. The oscar is 8 months old
>> > and shots often taste sour without milk. The pstate is now adjusted
>> > to 1/2 turn before the valve pops and shots seem to be improving.
>>
>> > During idle the heat element now stays on for only about 10 secs,
>> > which is quite a bit shorter then before I adjusted the pstat. Is
>> > this short cycle time normal?
>>
>> > Regards, Rob- Hide quoted text -
>>
>> - Show quoted text -
>
> I think I must have one of these. I'm still increasing the pstat
> gradually as I'm still getting shots that are a little too sour to my
> taste. I'm now at less than 1/4 turn from the popping point. What
> are the down sides to having the pstat sitting on the high side?
> Cheers, Rob
>




 
Date: 15 Jun 2007 01:36:40
From:
Subject: Re: Nuova Simonelli Oscar not hot enough...
On Jun 15, 10:44 am, "Jack Denver" <nunuv...@netscape.net > wrote:
> Why? You don't have to worry about adjusting the thermostat on a Silvia
> because it's non-adjustable - whatever brew temp you get from the factory is
> what you get unless you change the thermostat completely. Oscar is a much
> more complex machine so there is more to worry about but there is also more
> functionality - changing brew temp just means turning a screw on the pstat,
> but at least you CAN change it if you want to.
>
> However, the pstats on the Oscar can be flaky and I do recommend a PID
> upgrade.
>
> <RoqueJa> wrote in message
>
> news:s5a37316drp29qnsflie9asnkgq86403r5@4ax.com...
>
>
>
> > On Thu, 14 Jun 2007 12:56:30 -0400, "daveb" <davebobbl...@gmail.com>
> > wrote:
>
> > About four years ago I stressed over the decision to go with Oscar or
> > Silvia. Many, many times since I've been glad I went with Ms. S.
>
> > _______________________________________
> > Please Note: If you find a posting or message from me
> > offensive, inappropriate, or disruptive, please ignore it.
> > If you don't know how to ignore a posting, complain to
> > me and I will be only too happy to demonstrate.- Hide quoted text -
>
> - Show quoted text -

I too have been fiddling with my Oscar's pstat in the last few days
because the temperature appears too low. The oscar is 8 months old
and shots often taste sour without milk. The pstate is now adjusted
to 1/2 turn before the valve pops and shots seem to be improving.

During idle the heat element now stays on for only about 10 secs,
which is quite a bit shorter then before I adjusted the pstat. Is
this short cycle time normal?

Regards, Rob



  
Date: 15 Jun 2007 08:33:03
From: Jack Denver
Subject: Re: Nuova Simonelli Oscar not hot enough...
Probably - some of the pstats that Oscar uses have a very small dead band.

<rob_yg@hotmail.com > wrote in message
news:1181896600.579440.28410@z28g2000prd.googlegroups.com...
> On Jun 15, 10:44 am, "Jack Denver" <nunuv...@netscape.net> wrote:
>> Why? You don't have to worry about adjusting the thermostat on a Silvia
>> because it's non-adjustable - whatever brew temp you get from the factory
>> is
>> what you get unless you change the thermostat completely. Oscar is a
>> much
>> more complex machine so there is more to worry about but there is also
>> more
>> functionality - changing brew temp just means turning a screw on the
>> pstat,
>> but at least you CAN change it if you want to.
>>
>> However, the pstats on the Oscar can be flaky and I do recommend a PID
>> upgrade.
>>
>> <RoqueJa> wrote in message
>>
>> news:s5a37316drp29qnsflie9asnkgq86403r5@4ax.com...
>>
>>
>>
>> > On Thu, 14 Jun 2007 12:56:30 -0400, "daveb" <davebobbl...@gmail.com>
>> > wrote:
>>
>> > About four years ago I stressed over the decision to go with Oscar or
>> > Silvia. Many, many times since I've been glad I went with Ms. S.
>>
>> > _______________________________________
>> > Please Note: If you find a posting or message from me
>> > offensive, inappropriate, or disruptive, please ignore it.
>> > If you don't know how to ignore a posting, complain to
>> > me and I will be only too happy to demonstrate.- Hide quoted text -
>>
>> - Show quoted text -
>
> I too have been fiddling with my Oscar's pstat in the last few days
> because the temperature appears too low. The oscar is 8 months old
> and shots often taste sour without milk. The pstate is now adjusted
> to 1/2 turn before the valve pops and shots seem to be improving.
>
> During idle the heat element now stays on for only about 10 secs,
> which is quite a bit shorter then before I adjusted the pstat. Is
> this short cycle time normal?
>
> Regards, Rob
>
>




  
Date: 15 Jun 2007 07:50:40
From: daveb
Subject: Re: Nuova Simonelli Oscar not hot enough...
the pstat is NOT designed to be adjusted, period.



> During idle the heat element now stays on for only about 10 secs,
> which is quite a bit shorter then before I adjusted the pstat. Is
> this short cycle time normal?
>
> Regards, Rob
>




 
Date: 14 Jun 2007 15:16:29
From: glepore
Subject: Re: Nuova Simonelli Oscar not hot enough...

Look up Jack's ( or my) posts about PID on the Oscar. You won't go
back to a pressurestat..



 
Date: 14 Jun 2007 12:56:30
From: daveb
Subject: Re: Nuova Simonelli Oscar not hot enough...
Replace the "pressurestat" -- that yellow thing.

it has failed. it regulates the temperature by regulating the pressure with
a diaphragm and spring. do not attempt to adjust it. there are no
thermostats in the oscar.

amazing given its age, that it is still working at all!

Dave
www.hitechespresso.com



<chuck.elsham@antispamorama.com > wrote in message
news:b7h273dcb4oa92q98nakjjtec94eipjl16@4ax.com...
> Hello folks,
>
> I've been a little disappointed with the Oscar over the last year or
> two (I've had it about 6 years) & I recently decided to check the
> water temp (low tech style, using a sugar thermometer). It said 74
> degrees Celsius, which confirmed, assuming the thermometer is OK, that
> it's way too cool.
>
> So I took the top off hoping to find a temp stat, but there are two
> options.
>
> I posted a photo on a quick google web page...
>
> http://rob.rstevenson.googlepages.com/404
>
> Can anyone suggest how I can raise the brew temp based upon my photo?
>
> Thanks in advance,
>
> Rob
>




  
Date: 14 Jun 2007 13:44:46
From:
Subject: Re: Nuova Simonelli Oscar not hot enough...
On Thu, 14 Jun 2007 12:56:30 -0400, "daveb" <davebobblane@gmail.com >
wrote:

>Replace the "pressurestat" -- that yellow thing.
>
>it has failed. it regulates the temperature by regulating the pressure with
>a diaphragm and spring. do not attempt to adjust it. there are no
>thermostats in the oscar.
>
>amazing given its age, that it is still working at all!
>
>Dave
>www.hitechespresso.com
>
>
>


About four years ago I stressed over the decision to go with Oscar or
Silvia. Many, many times since I've been glad I went with Ms. S.







_______________________________________
Please Note: If you find a posting or message from me
offensive, inappropriate, or disruptive, please ignore it.
If you don't know how to ignore a posting, complain to
me and I will be only too happy to demonstrate.


   
Date: 14 Jun 2007 20:44:26
From: Jack Denver
Subject: Re: Nuova Simonelli Oscar not hot enough...
Why? You don't have to worry about adjusting the thermostat on a Silvia
because it's non-adjustable - whatever brew temp you get from the factory is
what you get unless you change the thermostat completely. Oscar is a much
more complex machine so there is more to worry about but there is also more
functionality - changing brew temp just means turning a screw on the pstat,
but at least you CAN change it if you want to.

However, the pstats on the Oscar can be flaky and I do recommend a PID
upgrade.




<RoqueJa > wrote in message
news:s5a37316drp29qnsflie9asnkgq86403r5@4ax.com...
> On Thu, 14 Jun 2007 12:56:30 -0400, "daveb" <davebobblane@gmail.com>
> wrote:
>
>>>
>
>
> About four years ago I stressed over the decision to go with Oscar or
> Silvia. Many, many times since I've been glad I went with Ms. S.
>
>
>
>
>
>
>
> _______________________________________
> Please Note: If you find a posting or message from me
> offensive, inappropriate, or disruptive, please ignore it.
> If you don't know how to ignore a posting, complain to
> me and I will be only too happy to demonstrate.




 
Date: 14 Jun 2007 12:13:51
From: Jack Denver
Subject: Re: Nuova Simonelli Oscar not hot enough...
#2 - the blue/yellow thing is your pressurestat.

#1 is the steam safety valve - do not touch.


Turn screw in center of Pstat clockwise 1/2 turn at a time until you reach
your desired brew temp or the safety valve pops, whichever comes first.
Wait until the element light goes out before turning more. Back off 1/2
turn if the valve pops. Keep hands and face clear - if the safety valve
pops there will be a big puff of steam. Be careful - that 3rd exposed
terminal on the pstat will be "live" at times. Keep screwdriver away from
it and better yet cap it off w/ a plastic insulator.

Do be careful - the fact that you


<chuck.elsham@antispamorama.com > wrote in message
news:b7h273dcb4oa92q98nakjjtec94eipjl16@4ax.com...
> Hello folks,
>
> I've been a little disappointed with the Oscar over the last year or
> two (I've had it about 6 years) & I recently decided to check the
> water temp (low tech style, using a sugar thermometer). It said 74
> degrees Celsius, which confirmed, assuming the thermometer is OK, that
> it's way too cool.
>
> So I took the top off hoping to find a temp stat, but there are two
> options.
>
> I posted a photo on a quick google web page...
>
> http://rob.rstevenson.googlepages.com/404
>
> Can anyone suggest how I can raise the brew temp based upon my photo?
>
> Thanks in advance,
>
> Rob
>




  
Date: 18 Jun 2007 21:21:33
From:
Subject: Re: Nuova Simonelli Oscar not hot enough...
Thanks Jack for the info. *Much* nicer coffee now.

[talking like he knows what a PID is]: I'll look up the info on PID
upgrade...

Cheers
Rob