Make sure they are not using a non DC humidifier treatment. Some of them are corrosive. A few years ago a Yamaha required a complete restringing, due to a corrosive humidifier treatment being used. I do not have direct knowledge of the specific instrument, but that is what I heard. It is too long ago to remember where from. The DC literature specifies that only theirs be used. John M. Ross Windsor, Nova Scotia, Canada jrpiano@win.eastlink.ca ----- Original Message ----- From: "Geoff Sykes" <ivories.52@earthlink.net> To: "'Pianotech'" <pianotech@ptg.org> Sent: Saturday, April 23, 2005 3:34 PM Subject: RE: DC and rust > John -- > > Don't think they will spring for the cover, but perhaps the humidifier > part > of the system is overkill in this situation. I think your suggestion of > just disconnecting the humidifier and leaving the de-humidifier might be > the > best choice. Don't need to add moisture where there is already too much. > > -- Geoff Sykes > Assoc. Los Angeles > > > -----Original Message----- > From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On > Behalf > Of John Pasterczyk > Sent: Friday, April 22, 2005 9:08 PM > To: pianotech@ptg.org > Subject: Re: DC and rust > > > Geoff, > > I live about 1.5 miles from the ocean in L.A. The > dryest my house has ever gotten was 65% R.H. (Once > monitered and recorded 24/7 for an entire year for an > unrelated film industry project, however I found the > info quite relavent to our profession). This, and > stories from other L.A. technicians that they have > removed more humidifiers than they've installed. Do > you really need the humidifier? We don't have the > bone chilling winters that cause us to turn on the > heat and dry out the house. > > In my community the strings rust prematurely from the > high relative humidity, and salt content from the > ocean...my first recommendation to all new piano > owners is an Edwards String Cover...even more so than > D.C. > > John Pasterczyk > Registered Piano Technician > http://www.southbaypiano.com > > > Forwarded Message > > Date: Fri, 22 Apr 2005 14:13:10 -0700 (GMT-07:00) > From: "Geoff Sykes" <ivories.52@earthlink.net> > To: pianotech@ptg.org > Subject: DC and rust > > Plain Text Attachment [ Download File | Save to Yahoo! Briefcase ] > > Greetings all -- > > About a year ago I replaced an old rusted out DC > system in a clients > grand with a complete new system and control box. The > water tank support > rails had literally rusted away and the tank had > fallen out. Did I say > it was old? Anyway, at the same time I also replaced > two broken strings > up in the high treble. The entire piano was on the > rusty side and my > guess is that age along with rust had caused these two > strings to break. > > On a return visit last weekend I found another string > up in the high > treble had broken. I also noticed increased signs of > rust, most notably > on the new strings I had replaced only a year ago. > > The client lives in Los Angeles about three miles from > the beach. She > tends to be cold most of the time so the forced air > heating system runs > a lot. While the vent in the piano room is blocked, > there is a sliding > glass door that is infrequently open leading to the > outside. All in all > not what I would call an environment that would be > rust promoting. > > Could the DC system be causing the rust? I'm open to suggestions. > > -- Geoff Sykes > Associate Member > Los Angeles Chapter > > > _______________________________________________ > pianotech list info: https://www.moypiano.com/resources/#archives > > -- > No virus found in this incoming message. > Checked by AVG Anti-Virus. > Version: 7.0.308 / Virus Database: 266.10.2 - Release Date: 4/21/2005 > > > -- > No virus found in this outgoing message. > Checked by AVG Anti-Virus. > Version: 7.0.308 / Virus Database: 266.10.2 - Release Date: 4/21/2005 > > > _______________________________________________ > pianotech list info: https://www.moypiano.com/resources/#archives >
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