Installation, Operation and Maintenance Instructions
the tuning spring stack of the feeder (see Figure 2). Variations in stiffness are obtained by changing the number of springs in the stack and/or by changing the thickness of fiberglass springs. In normal operation at full voltage, the total displacement for standard size trays, measured at the back of the tray, is .090" to .100" (2.3 mm to 2.5 mm).
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