3255 Manual
Page 30
... 4 FLASHES Safety Reversing Sensors slightly misaligned (dim or flashing LED). 5 FLASHES Motor overheated or possible RPM sensor failure. Replace Receiver Logic Board. If sending eye indicator light glows steadily, attach the receiving eye. • Align sensors, if the indicator lights glow replace the...wires for the sensors. If motor unit activates, replace door control wires. Symptom: Motor unit doesn't operate. • Replace logic board because motor rarely fails. 30 Bell Wire Diagnostics Located On Motor Unit Safety Reversing Sensor LED or Diagnostic LED "Learn" Button ...
... 4 FLASHES Safety Reversing Sensors slightly misaligned (dim or flashing LED). 5 FLASHES Motor overheated or possible RPM sensor failure. Replace Receiver Logic Board. If sending eye indicator light glows steadily, attach the receiving eye. • Align sensors, if the indicator lights glow replace the...wires for the sensors. If motor unit activates, replace door control wires. Symptom: Motor unit doesn't operate. • Replace logic board because motor rarely fails. 30 Bell Wire Diagnostics Located On Motor Unit Safety Reversing Sensor LED or Diagnostic LED "Learn" Button ...
3255 Manual
Page 34
...41AC050-1 18 41C5498 41C5497 19 41D181 41A2826 41A2825 DESCRIPTION Cover Limit switch drive and retainer Limit switch assembly Interrupter cup assembly RPM sensor assembly Receiver logic board assy. End panel with : Motor, worm, bracket, bearing assembly and RPM sensor KEY PART NO. NO. 1 31D380 2 41C4220A 3 41A2817... 18 2 17 5 7 8 11 13 9 14 12 10 16 19 15 Brown Wire (Down) Contact LIMIT SWITCH ASSY. Complete with: Logic board and end panel with all labels NOT SHOWN Motor shaft bearing kit Opener assembly hardware kit (includes screws not designated by a number in illustration)...
...41AC050-1 18 41C5498 41C5497 19 41D181 41A2826 41A2825 DESCRIPTION Cover Limit switch drive and retainer Limit switch assembly Interrupter cup assembly RPM sensor assembly Receiver logic board assy. End panel with : Motor, worm, bracket, bearing assembly and RPM sensor KEY PART NO. NO. 1 31D380 2 41C4220A 3 41A2817... 18 2 17 5 7 8 11 13 9 14 12 10 16 19 15 Brown Wire (Down) Contact LIMIT SWITCH ASSY. Complete with: Logic board and end panel with all labels NOT SHOWN Motor shaft bearing kit Opener assembly hardware kit (includes screws not designated by a number in illustration)...