Instruction Manual
D200138X012
3582, 582i, and 3583
January 2013
30
To level the beam, proceed as follows:
Note
In the following steps, if the required rotary shaft arm position cannot be attained when adjusting a pivot point, adjust one of the
other pivot points slightly. Then, repeat the original pivot adjustment. Continue this process until the required arm position can be
attained.
rotary shaft arm (key 2) so that the 0‐degree index marks on the rotary shaft arm align with the case index marks as
shown in figure 6. Then, position the travel pin (key 60) so that it is perpendicular to the arm and aligns with the
appropriate total actuator travel index mark on the rotary shaft arm. Tighten the locking nut (key 62).
Note
Valve stem travels less than 29 mm (1.125 inches) require that the travel pin be set at the 1‐1/8 inches travel index mark on the
rotary shaft arm.
2. Loosen the nozzle locknut and turn the nozzle clockwise to its lowest position. Then screw the nozzle out
(counterclockwise) approximately 4 turns and tighten the locknut.
Note
For proper operation, the flapper must approach the nozzle squarely. Inspect the nozzle/flapper alignment. Be sure the flapper is
not loose, bent, or twisted.
3. Remove any loading pressure and/or disengage any handwheel used to position the actuator. Connect the
necessary tubing from the valve positioner output to the actuator pressure connection.
4. Connect the input to the valve positioner and set the input signal value at midrange. For example, for a 3582 valve
positioner with a 0.2 to 1.0 bar (3 to 15 psig) input signal range, set the input signal at 0.6 bar (9 psig). Then apply
supply pressure to the valve positioner.
5. Move the flapper assembly to zero on the beam scale. The 0‐degree index marks on the rotary shaft arm should
align with the case index marks as shown in figure 16. If not, loosen the follower assembly screw locknut and adjust
the follower assembly screw until the 0‐degree index marks on the rotary shaft arm align with the case index marks.
Tighten the locknut.
6. Move the flapper assembly to position 10 on the direct‐acting side of the beam scale. The 0‐degree index marks on
the rotary shaft arm should align with the case index marks as shown in figure 16. If not, loosen the bellows
assembly locknut and adjust the bellows pivot pin until the 0‐degree index marks on the rotary shaft arm align with
the case index marks. Tighten the locknut.
7. Move the flapper assembly to the left to position 10 on the reverse‐acting side of the beam. The 0‐degree index
marks on the rotary shaft arm should align with the case index marks as shown in figure 16. If not, loosen the beam
pivot pin locknut and adjust the beam pivot pin until the 0‐degree index marks on the rotary shaft arm align with
the case index marks. Tighten the locknut.
it does not, adjust the nozzle and re‐level the beam. After alignment, the valve positioner is ready for calibration.
