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Date: 22 Jan 2007 07:41:03
From: Rusty
Subject: Silvia's Erratic PID temp Display
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Last November I posted the following;
"My PID Silvia (over two years since PID) is displaying erratic temperature
readouts - sometimes, not always.
On two occasions the readout has shown LLLL which I believe indicates a
thermocouple problem.
She powers up fine and stabilises at the set temp. She brews well, and
reaches the steam temp (not PID) and then sometimes the temp jumps about all
over the place. It settles down again as she cools down to the set brew
temp.
The PID is a Fuji PXR3 installed inside Silvia. It has worked flawlessly
for over two years.
Any expert like to hazard a guess as to what might be going on?"
I thank all who responded with suggestions. I have since solved the problem
which was caused by a steam leak inside Silvia. The leak raised the temp
inside Silvia to a level that exceed the PID's tolerance. I fixed the leak
by replacing two "O" rings in the steam valve, and to my surprise and
delight the PID now behaves perfectly.
Ken (as happy as a pig in mud) Russell
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Date: 21 Jan 2007 13:21:40
From: daveb
Subject: Re: Silvia's Erratic PID temp Display
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or Vaseline.
dave
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Date: 21 Jan 2007 16:24:16
From: Craig Andrews
Subject: Re: Silvia's Erratic PID temp Display
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"daveb" <davebobblane@gmail.com > wrote in message
news:1169414500.632430.134080@v45g2000cwv.googlegroups.com...
> or Vaseline.
>
> dave
>
At steam temps, it'll just melt right outta there.
Craig.
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Date: 21 Jan 2007 16:13:49
From: Craig Andrews
Subject: Re: Silvia's Erratic PID temp Display
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"Rusty" <kenrussell@optus YOUR HAT home.com.au > wrote in message
news:45b3cff2$0$5748$afc38c87@news.optusnet.com.au...
> Last November I posted the following;
>
> "My PID Silvia (over two years since PID) is displaying erratic
> temperature
> readouts - sometimes, not always.
>
> On two occasions the readout has shown LLLL which I believe indicates
> a
> thermocouple problem.
>
> She powers up fine and stabilises at the set temp. She brews well,
> and
> reaches the steam temp (not PID) and then sometimes the temp jumps
> about all
> over the place. It settles down again as she cools down to the set
> brew
> temp.
>
> The PID is a Fuji PXR3 installed inside Silvia. It has worked
> flawlessly
> for over two years.
>
> Any expert like to hazard a guess as to what might be going on?"
>
>
> I thank all who responded with suggestions. I have since solved the
> problem which was caused by a steam leak inside Silvia. The leak
> raised the temp inside Silvia to a level that exceed the PID's
> tolerance. I fixed the leak by replacing two "O" rings in the steam
> valve, and to my surprise and delight the PID now behaves perfectly.
>
> Ken (as happy as a pig in mud) Russell
>
It wouldn't/doesn't hurt to lubricate the "O" rings with some white food
grade grease either.
Craig
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