To level the beam, proceed as follows:NoteIn the following steps, if the required rotary shaft arm position cannot be attained when adjusting a pivot point, adjust one of theother pivot points slightly. Then, repeat the original pivot adjustment. Continue this process until the required arm position can beattained.1. Stroke the actuator to its mid‐travel position with a handwheel or a manual loader. Refer to figure 4 and 6. Lift therotary shaft arm (key 2) so that the 0‐degree index marks on the rotary shaft arm align with the case index marks asshown in figure 6. Then, position the travel pin (key 60) so that it is perpendicular to the arm and aligns with theappropriate total actuator travel index mark on the rotary shaft arm. Tighten the cap nut (key 62).NoteValve 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 therotary 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.NoteFor proper operation, the flapper must approach the nozzle squarely. Inspect the nozzle/flapper alignment. Be sure the flapper isnot loose, bent, or twisted.3. Remove any loading pressure and/or disengage any handwheel used to position the actuator. Connect thenecessary 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 valvepositioner 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 applysupply 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 shouldalign with the case index marks as shown in figure 16. If not, loosen the follower assembly screw locknut and adjustthe 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 onthe rotary shaft arm should align with the case index marks as shown in figure 16. If not, loosen the bellowsassembly locknut and adjust the bellows pivot pin until the 0‐degree index marks on the rotary shaft arm align withthe 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 indexmarks on the rotary shaft arm should align with the case index marks as shown in figure 16. If not, loosen the beampivot pin locknut and adjust the beam pivot pin until the 0‐degree index marks on the rotary shaft arm align withthe case index marks. Tighten the locknut.8. Repeat steps 5, 6, and 7 to optimize alignment. Recheck to make sure the flapper approaches the nozzle squarely. Ifit does not, adjust the nozzle and re‐level the beam. After alignment, the valve positioner is ready for calibration.