Fisher D500243X012 - Manual (Page 8)

Instruction Manual
D500243X012
1035/El-O-Matic Actuator
August 2012
8
Figure 3. Mounting Style Codes and Positions (Section 2)
E SERIES SPRING RETURN ACTUATOR CODES
CODE A STANDARD CONSTRUCTION
• CODE A VALVE-ACTUATOR POSITION IS SHOWN.
• ACTUATOR IS PARALLEL WITH PIPELINE (TOP VIEW).
• AIR AT PORT A ROTATES PINION GEAR CCW, AND
SPRING COMPRESSION ROTATES PINION CW.
• SPRING FAILS DISC TO CLOSED POSITION.
• HOUSING TRAVEL STOP ADJUSTS VALVE CLOSED
POSITION, AND END CAP TRAVEL STOP ADJUSTS
VALVE OPEN POSITION.
CODE D OPTIONAL CONSTRUCTION
• CODE D VALVE-ACTUATOR POSITION IS SHOWN.
• ACTUATOR IS PARALLEL WITH PIPELINE (TOP VIEW).
• AIR AT PORT A ROTATES PINION GEAR CW, AND
SPRING COMPRESSION ROTATES PINION CCW.
• SPRING FAILS DISC TO OPEN POSITION.
• END CAP TRAVEL STOP ADJUSTS VALVE CLOSED
POSITION, AND HOUSING STOP IS NOT AVAILABLE.
CODE C OPTIONAL CONSTRUCTION
• CODE C VALVE-ACTUATOR POSITION IS SHOWN.
• ACTUATOR IS PERPENDICULAR WITH PIPELINE.
• AIR AT PORT A ROTATES PINION GEAR CW, AND
SPRING COMPRESSION ROTATES PINION CCW.
• SPRING FAILS DISC TO OPEN POSITION.
• END CAP TRAVEL STOP ADJUSTS VALVE CLOSED
POSITION, AND HOUSING STOP IS NOT AVAILABLE.
CODE B CONSTRUCTION
• CODE B VALVE-ACTUATOR POSITION IS SHOWN.
• NOT AVAILABLE.
THIS CONSTRUCTION CANNOT BE USED
BECAUSE THE HOUSING TRAVEL STOP
CAN NOT BE USED TO ADJUST THE CLOSED
POSITION OF THE DISC, AND THE SLOT IN
THE TOP OF THE ACTUATOR SHAFT WILL
NOT INDICATE DISC POSITION.
PORT A
CHAMBER
DOUBLE-D
POSITION
PORT A
CHAMBER
HOUSING TRAVEL STOP
ADJUSTS CLOSED POSITION
END CAP TRAVEL
STOP ADJUSTS
CLOSED POSITION
(BOTH ENDS)
END CAP TRAVEL
STOP ADJUSTS
CLOSED POSITION
(BOTH ENDS)
ACTUATOR DRIVE SHAFT
AND PINION GEAR
PISTON
PISTONS INSTALLED 180_
FROM STANDARD CODE A
ADJUSTMENT
SCREW REMOVED
PORT A
CHAMBER
PISTONS INSTALLED 180_
FROM STANDARD CODE A
ADJUSTMENT
SCREW REMOVED
ACTUATOR DRIVE
SHAFT ROTATED 90_
FROM STANDARD
NOT AVAILABLE
PIPELINE
1
2
3 3
2
1
NOTES:
DRAWING SHOWS THE ORIENTATION OF THE DOUBLE-D VALVE CONNECTION ON
THE SHAFT WITH RESPECT TO THE SLOT IN THE TOP OF THE DRIVE SHAFT.
ADJUST THE TRAVEL STOP SCREWS EQUALLY ON BOTH ENDS OF THE ACTUATOR.
FROM A STANDARD CONSTRUCTION CODE A, REMOVE HOUSING ADJUSTMENT SCREW AND LOCKNUT,
AND REPLACE IT WITH A CAP SCREW FOR CODE C AND D.
1
3
2
75B0442
A7044