DC "Smart Heater Bar"

[Isaac OLEG]

Thanks, for answering.

Yes the question about the scrub is yet open, the 2 systems mounted
with them, have the pads becoming scrubby and probably less efficient
in a few months (3-4 months actually), and , as the customers are of
the keen ones (of course they are , as they have a DC in their pianos)
they noticed that new pads where necessary more often that what I've
told them.

What I don't really get is if the "pad"s light blink when the pads are
dirty with the deposit, then if I relate that to the other problem I
suspect (too much warmness near  the controller when the lights are
on), that would mean :
1 ° The scrub develop too fast so the pads are less efficient
2° Then the pads light is on always
3° the warmness of the power + pads wire lights tend to give the
controller an optimistic idea of the humidity.
4° When humidity if too high it is then less corrected by the rods.

That makes a lot of supposed problems due to initially ameliorations
of the product.
As often in these kind of evolutions, there are some possible
drawbacks, I hope the problem is not as a catastrophic scenario as I
write there, but that is understandable that the 3 lights together
induce a warming of the wiring (in Watts how much ?)anyway UNDER OUR
220 v 60 Hz A.C. that is the case (the box was almost as warm as a low
wattage rod on the wire side)

May I suggest that the controllers be calibrated after they have been
on for sometime, and in a somewhat close environment as under a
soundboard. How are they calibrated actually ? When I first plug the
system it always work fine and react with an acceptable tolerance in
H.R. from what I've seen yet.

Is there a transformer, or some thyrstor (resistances) in the
controller ?

Thanks for your help

I've find another lack of security in the kind of plugs used (3 pins
computer type) as sometime the contact is not perfect with this
plugging, while I can't see why.

That's all for my (hopefully constructive) comments. For sure I'd like
a window in the tank to see the water level, and a customer is
dreaming of :
A rack that can be moved out of the piano (terrific for concert
stages)
An automation for the water (this is more complicated I guess as it
involves a pump servo serviced).

I wish to order a partial system too, and will check again with my
retailer.

Thanks for your help.

With bets Regards.

Isaac OLEG


PianoTech
19 rue Jules Ferry
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FRANCE
tel : 033 01 47 18 06 98
fax : 033 01 47 18 06 90
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> -----Message d'origine-----
> De : Roger Wheelock [mailto:roger@dampp-chaser.com]
> Envoyé : mardi 10 décembre 2002 15:51
> À : oleg-i@wanadoo.fr; Pianotech
> Objet : Re: DC "Smart Heater Bar"
>
>
> Hello Isaac and List,
>
> I have been traveling without email and have missed a bit
> of this thread.  I
> will pass your question on to Bob Mair for his opinion.  In
> the meantime let
> me address two issues that appeared earlier.
>
> The SHB probes do develop a residue with time.  Generally
> this is easily
> removed once a year by scrubbing the probes with a sponge
> or scrub brush.
> In certain areas with poor water quality the deposits can
> be heavier,
> requiring more frequent cleaning.
>
> We do not recommend cutting the probes on the SHB.  If this
> is done the
> remaining ends of the probes must be shorted for the SHB to work.
>
> We, as a manufacturer, are caught between complaints of
> "costs to much" and
> "needs to have more features".  We try to strike a balance,
> but are always
> open to suggestions to improving the product.  Please
> contact me directly at
> roger@dampp-chaser.com.
>
> Thanks,
>
> Roger
>
> ----- Original Message -----
> From: "Isaac OLEG" <oleg-i@wanadoo.fr>
> To: "Pianotech Mailing list" <pianotech@ptg.org>
> Sent: Tuesday, December 10, 2002 3:23 AM
> Subject: TR: DC "Smart Heater Bar"
>
>
> >
> > Dear Colleagues,
> >
> > I fairly understand it is politically incorrect to badmouth  an
> > American product on the list ;>) but :
> >
> >
> > Do anyone noticed that the area around the humidistat is
> warm when the
> > lights have been on for sometime, and that then, the humidity
> > appreciation by the controller is not correct (allowing a
> too humid
> > 62% or so) soundboard.
> >
> > Thanks for reading
> >
> > Isaac OLEG
> >
> > > -----Message d'origine-----
> > > De : pianotech-bounces@ptg.org
> > > [mailto:pianotech-bounces@ptg.org]De la
> > > part de Conrad Hoffsommer
> > > Envoye : samedi 7 decembre 2002 20:07
> > > A : Pianotech
> > > Objet : Re: DC "Smart Heater Bar"
> > >
> > >
> > > At 13:00 12/7/2002 -0600, you wrote:
> > > >Recent discussions about this ...
> > > >
> > > >New questions: Is it's only function to indicate that the
> > > pads are gunky?
> > > >If pads are routinely replaced every 6 months, I ask: "Who
> > > needs the SHB?"
> > > >It adds about $22 to each system.
> > > >
> > > >  Alan Barnard
> > >
> > >
> > >
> > > No. It will also indicate when the tank (and pads) have
> gone bone
> > > dry.  Tends to wake people up who think, "I've got a few
> > > days after the
> > > light goes on before it's _really_ dry."  Funny how those
> > > "few days" fly by...
> > >
> > >
> > >
> > > Conrad Hoffsommer PTG RPT, MPT, CCT
> > >
> > > Certified Calibration Technician (CCT) for Bio-powered
> > > Digitally Activated
> > > Lever Action Tone Generation Systems
> > >
> > > _______________________________________________
> > > pianotech list info:
https://www.moypiano.com/resources/#archives
> >
>
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