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Rotary pneumatic positioner F793
Installation and Maintenance Instructions
Wiring diagrams
Wiring diagram for Rotary Pneumatic Positioner with 2 micro-switches
Blue
Blue
Red
Red
Wiring diagram for Rotary Pneumatic Positioner with 2 Proximity switches
Blue (-)
Brown (+)
Black (-)
Red (+)
Cam setting procedure
1. Release both clamping screws by turning each screw approximately 1,5 turns anti-clockwise.
2. Operate positioner/actuator to CLOSE position.
3. Adjust "CLOSE" adjusting screw by turning clockwise until lower cam just triggers the lower
switch.
4. Operate positioner to OPEN position.
5. Adjust "OPEN" adjusting screw by turning anti-clockwise until upper cam just triggers the upper
switch.
6. Tighten both clamping screws to lock the cams in the set position.
7. Operate the positioner/actuator OPEN and CLOSED to check the cam operation and re-adjust if
necessary.
Retrofit procedure
1. Remove positioner cover.
2. Remove circlip from top of camshaft.
3. Remove spacer from camshaft.
4. Fit cam assembly onto hexagon camshaft with adjusting and clamping screws towards the
outboard end.
Note: The assembly has been made with a tight fill onto the hexagon shaft in order to eliminate
any backlash. It may be necessary to drive the assembly over the shaft. To do this, use the
original spacer as a drift and rive the assembly over the shaft using a light hammer.
5. Fit the microswitch/terminal plate as shown, using the two M5 hexagon socket cap screws.
6. Set the cams in accordance with the procedure.
7. Re-fit the cover.
Sectional plan view
Pentair reserves the right to change the contents without notice
Bottom switch (close)
Top switch (open)
Bottom switch (close)
Top switch (open)
Microswitch/terminal plate
Clamping screws
Adjusting screws
page 4
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