Standard-Themodist Expression Mechanism
By Bob and Sonja Lemon
The spring-controlled bellows operates a valve to control the accompaniment level when playing Themodist rolls. If the bypass valves (either pneumatic or slide valve) are open, the pump pressure will be directed under the regulating pneumatics and cause them to "appear" to not be operating. To properly set the regulator, make sure all the other valves are closed first.
We did find one instance where the supply nipple between the expression unit and the player stack was pushed in far enough to restrict the flow to the stack. This was on an Angelus unit. I hope this helps.
Bob Lemon
Lemon's Player Piano Service
Sacramento, CA |
(Message sent Thu 13 Feb 1997, 01:14:22 GMT, from time zone GMT-0800.) |
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