3003 W CASINO RD BLDG 40-36 2025-03-25

(POTTER The Symbol of Protection OSYSU Series Outside Screw and Yoke Value Supervisory Switch Small Valve Installation - 1/211 Through 2 1/211 Sizes Fig 6 1 Small Valve Installation NOTE., If the valve stem is pre -grooved at 1 /8"minimum depth; proceed to step 7. 1. Remove and discard "E" ring and roller from the hip rod. 2. With the valve in the FULL OPEN position, locate the OSYSU across the valve yoke as far as possible from the valve gland so that the spring loaded trip rod of the OSYSU is pulled against the non threaded portion of the valve stem. Position the OSYSU with the bracket near the handwheel as shown in Fig. 6 if possible to avoid creating a pinch point between the wheel and the OSYSU. 3. Loosen the locking screw that holds the trip rod in place and adjust the rod length (see Fig. 5). When adjusted properly, the rod should extend past the valve screw, but not so far that it contacts the clamp bar. Tighten the locking screw to 5 in-lbs minimum to hold the trip rod in place and properly seal the enclosure. NOTE: If hip rod length is excessive, loosen the locking screw and remove the hip rod from the trip lever. Using pliers, break off the one (1) inch long notched section (see Fig. 10). Reinstall trip rod and repeat Step 3 procedure. 4. Mount the OSYSU loosely with the carriage bolts and clamp bar supplied. On valves with limited clearance use J-hooks supplied instead of the carriage bolts and clamp bar to mount the OSYSU. RM Jai I111��1111 ��` Slotted mounting holes and micro -adjustment feature may be used for fine adjustment of switch assembly to mounting bracket. Re -tighten screws to 20 in-lbs minimum. make it easier to install the OSYSU so thatit does not restore as it rolls over by the threads of the valve stem. 7. Mount the OSYSU on the valve yoke with the spring loaded trip rod of the OSYSU pulled against the valve stem and centered in the groove of the stem. If possible, position the OSYSU with the flat side of the bracket toward the hand wheel, as shown in Fig. 6, to help avoid creating a pinch point between the wheel and OSYSU. When in this preferred mounting position, it is usually best to use the white indicator visible through the window, as illustrated in Fig. 3, to aid in initially locating the OSYSU in the correct position on the yoke. If the unit must be installed inverted with the white indicator no longer easily visible, use the visual indicators of the actuator buttons on the micro -switches, as illustrated in Fig. 1, or the trip rod alignment mark on the bracket, as illustrated in Fig. 2 , to aid in initially locating the OSYSU. & Final adjustment can be made by slightly loosening the two screws on the bracket and using the fine adjustment feature (see Fig. 5). The adjustment is correct when the plungers on the switches are depressed by the actuator and there is no continuity between the COM and NO terminals on the switches. 9. Tighten the adjustment screws and all mounting hardware securely (20 in-lbs minimum). Check to insure that the rod moves out of the groove easily and that the switches activate within two turns when the valve is operated from the FULL OPEN towards the CLOSED position. 5. Mark the valve stem at the center of the hip rod. 10. Reinstall the cover and tighten the cover screws to 15 in-lbs 6. Remove the OSYSU. Utilizing a 3/16" or 1/4" diameter minimum to properly seal the enclosure. straight file, file a 1 /8" minimum depth groove centered on the mark on the valve stem. Deburr and smooth the edges A of the groove to prevent damage to the valve packing and to CAUTION allow the hip rod to move easily in and out of the groove as Close the valve fully to determine that the stem threads do not the valve is operated. activate the switch. The switch being activated by the stem threads NOTE., A groove depth of up to approximately 3/16" can could result in a false valve open indication. Potter Electric Signal Company, LLC • St. Louis, MO • Tech Support 866-956-0988 / Customer Service: 866-572-3005 • w vpottersignal.com 5401525-REVG • 6/19 PAGE OF