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WCAIM2037 DataFlo Digital Electronic Positioner DFP17 Installation, Operation and Maintenance Instructions 27

6.0 APPLICATION NOTES

6.1 Bypass Switch for Manual Control (For 120 VAC Only)

This application is offered as a nonstandard option through

Flowserve’s Custom Products Department or may be altered by

end user. Figure 10 shows a schematic diagram of two switches

for controlling the following functions:

• One triple-pole, double-throw (TPDT) switch with center-off,

switching from automatic to manual operation.

• One single-pole, double-throw (SPDT) switch with center-off

position for manually controlling clockwise (CW), counter-

clockwise (CCW) directions of actuator.

Figure 10

Flow Control

Worcester Actuation Systems

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Flowserve DFP17 Manuale Utente Pagina 27