I have never seen nor installed the humidifier portion of the Damp-Chaser system here in Florida. Dehumidifier only. Most installations I see are improper, with the older silver 25W rods and no humidistat. Damage - fry piano interior - apparently premature glue failure, toasted plastic elbows (all the elbows directly above the rod crumble, the end ones are still plastic). I have yet to see a vertical piano humidistat properly installed. The few that have a humidistat - it is always hanging from the heater rod. Damp-Chaser specifically instructs that if a humidifier is not used, the humidistat should be mounted above the rod somewhere on the side of the case. The humidistat needs to be in a place where it can react to the changing RH in the interior of the piano - in an area ideally where the RH is most representative of the average RH in the piano. I have not seen any damage that I can clearly attribute to an improperly installed humidistat - but hey, when theory dictates otherwise, and nothing else suggests the theory may be wrong, go with the theory! Terry Farrell ----- Original Message ----- From: <kam544@flash.net> To: <pianotech@ptg.org> Sent: Saturday, July 07, 2001 10:35 AM Subject: Re: Damp Chaser in old upright > >... I will say, however, that pianos have been damaged by incorrectly > >installed systems... > >Clyde Hollinger > > Clyde, List, > > Are you referring to *complete* Dampp-Chaser systems installed incorrectly, > Clyde, and if so, in what way were they installed incorrectly enough to > damage these pianos you mention, and what damage was done to these pianos? > > Keith McGavern > Registered Piano Technician > Oklahoma Chapter 731 > Piano Technicians Guild > USA > >
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