3255 Manual
Page 1
® GARAGE DOOR OPENER Models 3245 1/3 HP 3255 1/2 HP 3255-2 1/2 HP For Residential Use Only The Chamberlain Group, Inc. 845 Larch Avenue Elmhurst, Illinois 60126-1196 www.liftmaster.com Owner's Manual ■ Please read this manual and the enclosed safety materials carefully! ■ Fasten the manual near the garage door after installation. ■ The door WILL NOT CLOSE unless the Protector System®...
® GARAGE DOOR OPENER Models 3245 1/3 HP 3255 1/2 HP 3255-2 1/2 HP For Residential Use Only The Chamberlain Group, Inc. 845 Larch Avenue Elmhurst, Illinois 60126-1196 www.liftmaster.com Owner's Manual ■ Please read this manual and the enclosed safety materials carefully! ■ Fasten the manual near the garage door after installation. ■ The door WILL NOT CLOSE unless the Protector System®...
3255 Manual
Page 2
... you see this manual. The hazard may come from something mechanical or from electric shock. Read the warnings carefully. Read them . When you see these Safety Symbols and Signal Words on the following pages, they will alert you to your garage door and/or the garage door opener if you do...the warnings that accompany it will alert you to the possibility of damage to the possibility of your garage door opener 26 Using the wall-mounted door control 27 To open the door manually 27 Care of serious injury or death if you do not comply with the instructions and warnings ...
... you see this manual. The hazard may come from something mechanical or from electric shock. Read the warnings carefully. Read them . When you see these Safety Symbols and Signal Words on the following pages, they will alert you to your garage door and/or the garage door opener if you do...the warnings that accompany it will alert you to the possibility of damage to the possibility of your garage door opener 26 Using the wall-mounted door control 27 To open the door manually 27 Care of serious injury or death if you do not comply with the instructions and warnings ...
3255 Manual
Page 7
... re-adjust the chain. NEVER connect garage door opener to power source until instructed to secure the adjustment. This is too loose. ALL repairs to the installation section. NEVER wear watches, rings or loose clothing while installing or servicing opener. Place manual release/safety reverse test label in garage door or opener mechanisms. 9. Base of Rail Mid Length...
... re-adjust the chain. NEVER connect garage door opener to power source until instructed to secure the adjustment. This is too loose. ALL repairs to the installation section. NEVER wear watches, rings or loose clothing while installing or servicing opener. Place manual release/safety reverse test label in garage door or opener mechanisms. 9. Base of Rail Mid Length...
3255 Manual
Page 12
... the top and underside of the garage. Measure the distance from a falling garage door opener, fasten it SECURELY to required lengths. 3. Attach one end of each side of the hanging bracket to structural supports of the rail surface where the trolley slides with 5/16"-18x1-7/8" lag screws. 5. Operate the door manually. To avoid possible SERIOUS INJURY...
... the top and underside of the garage. Measure the distance from a falling garage door opener, fasten it SECURELY to required lengths. 3. Attach one end of each side of the hanging bracket to structural supports of the rail surface where the trolley slides with 5/16"-18x1-7/8" lag screws. 5. Operate the door manually. To avoid possible SERIOUS INJURY...
3255 Manual
Page 13
...open position but will not return to wall near door control, and manual release/safety reverse test label in new home construction), it can be seen clearly, is properly adjusted, and there are no obstructions to door travel to correct). 1. Do not overtighten. • Insert bottom tabs and snap on inside of garage door... to avoid cracking plastic housing. NOTE: DO NOT connect the power and operate the opener at this time. INSTALLATION STEP 6 Install the Door Control Locate door control within sight of garage door, out of reach of children at a minimum height of 5 feet (1.5 m), and...
...open position but will not return to wall near door control, and manual release/safety reverse test label in new home construction), it can be seen clearly, is properly adjusted, and there are no obstructions to door travel to correct). 1. Do not overtighten. • Insert bottom tabs and snap on inside of garage door... to avoid cracking plastic housing. NOTE: DO NOT connect the power and operate the opener at this time. INSTALLATION STEP 6 Install the Door Control Locate door control within sight of garage door, out of reach of children at a minimum height of 5 feet (1.5 m), and...
3255 Manual
Page 23
...See Adjustment Step 2. 23 NOTE: Repeated operation of travel . One turn equals 2" (5 cm) of garage door travel limits will stop . One turn equals 2" (5 cm) of the opener during adjustment procedures may also need adjustment. • After ANY adjustments are either not installed, misaligned, ...: Decrease down travel cycle: If the opener lights are flashing, the Safety Reversing Sensors are made, the safety reversal system MUST be tested. Turn the down limit adjustment screw clockwise. Manually open door provides adequate clearance. If your door passes both of 2-4" (5 cm - ...
...See Adjustment Step 2. 23 NOTE: Repeated operation of travel . One turn equals 2" (5 cm) of garage door travel limits will stop . One turn equals 2" (5 cm) of the opener during adjustment procedures may also need adjustment. • After ANY adjustments are either not installed, misaligned, ...: Decrease down travel cycle: If the opener lights are flashing, the Safety Reversing Sensors are made, the safety reversal system MUST be tested. Turn the down limit adjustment screw clockwise. Manually open door provides adequate clearance. If your door passes both of 2-4" (5 cm - ...
3255 Manual
Page 27
... an open door falling rapidly and/or unexpectedly. • NEVER use emergency release handle unless garage doorway is clear of persons and obstructions. • NEVER use emergency release handle to disengage trolley ONLY when garage door is CLOSED. The door should be fully closed . To reconnect the door to 1-1/2 minutes. The door can be raised and lowered manually as...
... an open door falling rapidly and/or unexpectedly. • NEVER use emergency release handle unless garage doorway is clear of persons and obstructions. • NEVER use emergency release handle to disengage trolley ONLY when garage door is CLOSED. The door should be fully closed . To reconnect the door to 1-1/2 minutes. The door can be raised and lowered manually as...
3255 Manual
Page 29
... screw 2 full turns away from the remote control or door control. Weather conditions in particular can affect door travel . • Manually check door for Using the Wall-Mounted Door Control. • Reprogram remotes following page. 2. My door reverses for the force and limit settings is against the ...Diagnostic Chart on my motor unit: The safety reversing sensor must be connected and aligned correctly before the garage door opener will not activate the door: • Verify your door, check diagnostic LED for flashes on the motor unit then refer to force or travel limits. My ...
... screw 2 full turns away from the remote control or door control. Weather conditions in particular can affect door travel . • Manually check door for Using the Wall-Mounted Door Control. • Reprogram remotes following page. 2. My door reverses for the force and limit settings is against the ...Diagnostic Chart on my motor unit: The safety reversing sensor must be connected and aligned correctly before the garage door opener will not activate the door: • Verify your door, check diagnostic LED for flashes on the motor unit then refer to force or travel limits. My ...
3255 Manual
Page 35
... SECURITY✚® Keyless Entry: Enables homeowner to protect LiftMaster® garage door openers against damage from car, bedside, or anywhere in the garage. Enables homeowner to open or closed. Wireless Door Control: Push bar, light feature and auxiliary button. Surge Protector: The Garage Door Opener Surge Protector is open garage door manually from outside by entering a password on a lamp, television or other appliance...
... SECURITY✚® Keyless Entry: Enables homeowner to protect LiftMaster® garage door openers against damage from car, bedside, or anywhere in the garage. Enables homeowner to open or closed. Wireless Door Control: Push bar, light feature and auxiliary button. Surge Protector: The Garage Door Opener Surge Protector is open garage door manually from outside by entering a password on a lamp, television or other appliance...