3255 Manual
Page 18
... Bell Wire 1. If the door is dim, realign either sensor. Lock in both sensors to the opener. Figure 5 Wing Nut 1/4"-20 Carriage Bolt 1/4"-20x1/2" Lens TROUBLESHOOTING THE SAFETY REVERSING SENSORS 1. Figure 6 Bell Wire Finished Ceiling Connect Wire to wall and ceiling. • Strip 7/16" (11 mm) of insulation from both the...
... Bell Wire 1. If the door is dim, realign either sensor. Lock in both sensors to the opener. Figure 5 Wing Nut 1/4"-20 Carriage Bolt 1/4"-20x1/2" Lens TROUBLESHOOTING THE SAFETY REVERSING SENSORS 1. Figure 6 Bell Wire Finished Ceiling Connect Wire to wall and ceiling. • Strip 7/16" (11 mm) of insulation from both the...
3255 Manual
Page 23
... UP and DOWN Travel Limits Limit adjustment settings regulate the points at least five feet (1.5 m): Increase up or down. NOTE: Repeated operation of travel . See Troubleshooting, page 18. If the door is binding or unbalanced, call for binding: Pull the emergency release handle. Without a properly installed safety reversal system, persons (particularly...
... UP and DOWN Travel Limits Limit adjustment settings regulate the points at least five feet (1.5 m): Increase up or down. NOTE: Repeated operation of travel . See Troubleshooting, page 18. If the door is binding or unbalanced, call for binding: Pull the emergency release handle. Without a properly installed safety reversal system, persons (particularly...