Don, thanks for answering, The problem I have seen seems to be the same as Terry Farell a few posts ago, let me explain. A customer of mine live in a humid place (day in day out 75% to 85% RH) His grand Bechstein suffered much of the situation, to the point, after calling 2 master techs that where unable to notice that the keyframe have warped too much, call me to fix the piano. I suggested a system DC with 3 rods, as we where in a hurry and I only had a complete system (humidifier & dehumidifier), I ordered a partial one (dehumidifier only), and I installed the actual system without the humidifier . After that I went on holidays, and had no answer from the DC dealer here, about the possibility to have a dehumidifier only. Indeed that seem to be the same situation with anyone that know that the moisture will never be higher than 45%, as then it is probable that one will not even put water in the tank (and may be that is what Terry's done, from what I understand). Then the 3 lights are on all the time (power, pads and the water light blinking). I checked the system once after installation, and he worked fine to give a 42% (45%) environment under the piano. When I came 3 months after, the HR in and around the board was 60%. I c checked the humidistat, it worked, but I was obliged to give more than 62% HR to have the rods warm. After scratching my head a bit, I touch with my hand the controller, and noticed it was warm at the right side, near the output of the 3 wires for the lights. So I believe that this warmness is enough to maintain a cool 45% RH near the humidistat, and then it does not react until HR is really high. Then I post that to ask other if they ever checked the warmness of the controller, particularly when the lights have been on for some time. If someone had a tester with a probe , that can be easy for him to test the HR just near the controler opening. At this time you are the only one that noticed , but I suggest it is possibly the reason for Terry's problem (yes I can mail to him directly, I will Terry...) Thanks for any idea, first I want to find a controller to be used for dehumidification only (is that kind available ?) If not I may consider cutting the wires of the lights but the "power" one. That is not to say that DC system are not efficient, but if there is some problem there it may be fixed, and having a stable 60%RGH is better than nothing, but I expect a little less for sure. With best Regards, and so on. Friendly wishes Isaac OLEG Francia > -----Message d'origine----- > De : Don [mailto:pianotuna@accesscomm.ca] > Envoye : mardi 10 decembre 2002 14:50 > A : oleg-i@wanadoo.fr; Pianotech > Objet : Re: TR: DC "Smart Heater Bar" > > > Hi Oleg, > > Do you mean the low water light? or the pads light? If the > later then the > DC unit can't produce humidity as it has no water to do so > with. I have not > noticed this. The lights do not draw an appreciable amount > of current. > Perhaps it is time to "crack open" an controller and see > what is inside. > > At 09:23 AM 12/10/02 +0100, you wrote: > > > >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 >> > >_______________________________________________ >pianotech list info: https://www.moypiano.com/resources/#archives > >_______________________________________________ >pianotech list info: https://www.moypiano.com/resources/#archives > > Regards, Don Rose, B.Mus., A.M.U.S., A.MUS., R.M.T., R.P.T. Tuner for the Center of the Arts mailto:pianotuna@accesscomm.ca http://us.geocities.com/drpt1948/ 3004 Grant Rd. REGINA, SK S4S 5G7 306-352-3620 or 1-888-29t-uner
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