Do they keep the lid closed except during worship times? That makes a big difference.<br><br>How far is the humidistat from the tank? Should be 12" or so.<br><br>I'm finding a lot of pianos with loose tuning pins, but none with the DC systems. Loose pins are normal with a really dry winter. And my hygrometer stops registering below 24%. It's happened several times already this year.
<br><br>If the lid is closed and the stat is in the right place, it might be so dry the system can't keep up. I do have a system with an undercover in a Yamaha C3. It has similar problems even with the DC system. But 14 cents seems a bit much of a drop from Christmas. This piano had an older system before, and it dropped that much with it. It seems to be better with a newer system, although it hasn't been on long enough to tell for sure.
<br><br>JF<br><br><br><br><br><br><div><span class="gmail_quote">On 2/16/07, <b class="gmail_sendername">Barbara Richmond</b> <<a href="mailto:piano57@insightbb.com">piano57@insightbb.com</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div bgcolor="#ffffff">
<div><font face="Arial" size="2">Howdy,</font></div>
<div><font face="Arial" size="2"></font> </div>
<div><font face="Arial" size="2">Hope you're all nice and cozy, it's been dang
cold here. I've got a question for you DC experts, I would have called DC
themselves, but I didn't get home in time this afternoon. </font></div>
<div><font face="Arial" size="2"></font> </div>
<div><font face="Arial" size="2">Early this past fall I regulated a 1920s S&S A
and installed a full DC system--but no undercover. The piano is kept
closed and covered when not in use. The church has AC, though to me
it felt humid (for some reason I didn't have my hygrometer with
me). Anyway, before Christmas I tuned the piano again and it was 17
cents low. Today I tuned it again and it was 14 cents
low. Yikes. The weather here lately has been extremely cold (OK,
you nanooks of the north can laugh) and the church was incredibly dry--it didn't
register on my not very good hygrometer. A couple weeks ago, the music
director called to tell me that tuning pins were slipping like crazy on the
harpsichord I worked on last December. I thought today that the
tuning pins on the piano felt looser than in the past (or was it my
imagination?). AND I noticed that the regulation was off, too.
Geeze. Apparently the heat is always on in the church--not one of those
where it gets turned off and on, and it has felt warm to me the times I've been
in there.</font></div>
<div><font face="Arial" size="2"></font> </div>
<div><font face="Arial" size="2">So...you get the picture that the place is
dry. Here is the question--how good a job should the DC system be doing in
these circumstances? Is anybody else experiencing this? The music
director said he is filling the DC tank at least once a week. I even took
a look to see if I had plugged things in the wrong place. Is there
anything else I can do, besides put an undercover on? Can undercovers
make a huge difference in a situation where there isn't significant air
movement, etc? </font></div>
<div><font face="Arial" size="2"></font> </div>
<div><font face="Arial" size="2">I thought about recommending that the church look
into a big April-Aire system. </font></div>
<div><font face="Arial" size="2"></font> </div>
<div><font face="Arial" size="2">Any suggestions are welcome.</font></div>
<div> </div>
<div><font face="Arial" size="2">Thanks.</font></div>
<div> </div>
<div><font face="Arial" size="2">Barbara Richmond, RPT</font></div>
<div><font face="Arial" size="2">near Peoria,
Illinois</font> </div></div>
</blockquote></div><br>