Hello, The missing valve is used primarily for the repeat function of the AMPICO system. I have the tubing schematic for this device, if you would like it. If the AMPICO is not functioning, the pump cutout is probably locked on, so that no vacuum reaches the notes. Does the piano roll go forward at a high rate of speed with no apparent tempo control? If it does, the pump Cutout is locked on. This may or may not be caused by the missing valve. Check the drawer tubing underneath and look for unhooked or broken tubes. One of these tubes is the pump cutout, and it could be unhooked or broken. Good luck. I may have a valve for replacement. Herb Lindahl, RPT -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://ptg.org/pipermail/pianotech.php/attachments/20091230/757ec38d/attachment.htm>
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