3255 Manual
Page 18
... from each other across the door. When the green indicator light glows steadily, tighten the wing nut. Figure 5 Wing Nut 1/4"-20 Carriage Bolt 1/4"-20x1/2" Lens TROUBLESHOOTING THE SAFETY REVERSING SENSORS 1. If the sending eye indicator light glows steadily but the receiving eye indicator light doesn't: • Check alignment. • Check for...
... from each other across the door. When the green indicator light glows steadily, tighten the wing nut. Figure 5 Wing Nut 1/4"-20 Carriage Bolt 1/4"-20x1/2" Lens TROUBLESHOOTING THE SAFETY REVERSING SENSORS 1. If the sending eye indicator light glows steadily but the receiving eye indicator light doesn't: • Check alignment. • Check for...
3255 Manual
Page 23
... down . Turn the UP limit adjustment screw clockwise. One turn equals 2" (5 cm) of travel . One turn equals 2" (5 cm) of travel cycle after each adjustment. See Troubleshooting, page 18. Test the door for a trained door systems technician. ADJUSTMENT STEP 1 Adjust the UP and DOWN Travel Limits Limit adjustment settings regulate the points...
... down . Turn the UP limit adjustment screw clockwise. One turn equals 2" (5 cm) of travel . One turn equals 2" (5 cm) of travel cycle after each adjustment. See Troubleshooting, page 18. Test the door for a trained door systems technician. ADJUSTMENT STEP 1 Adjust the UP and DOWN Travel Limits Limit adjustment settings regulate the points...