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® 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. ■ ...
® 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. ■ ...
3255 Manual
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... 7 Determine the header bracket location 8 Install the header bracket 9 Attach the rail to the header bracket 10 Position the opener 11 Hang the opener 12 Install the door control 13 Install the light 14 Attach the emergency release rope and handle 14 Electrical requirements 15 Install ... Protector System 25 Operation 26-30 Operation safety instructions 26 Using your garage door opener 26 Using the wall-mounted door control 27 To open the door manually 27 Care of your garage door opener 28 Having a problem 29 Diagnostic chart 30 Programming 31-32 To add or...
... 7 Determine the header bracket location 8 Install the header bracket 9 Attach the rail to the header bracket 10 Position the opener 11 Hang the opener 12 Install the door control 13 Install the light 14 Attach the emergency release rope and handle 14 Electrical requirements 15 Install ... Protector System 25 Operation 26-30 Operation safety instructions 26 Using your garage door opener 26 Using the wall-mounted door control 27 To open the door manually 27 Care of your garage door opener 28 Having a problem 29 Diagnostic chart 30 Programming 31-32 To add or...
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...any ropes connected to garage door. • Complete the following test to make sure your door binds, sticks, or is out of the opener, instructions will call a trained door systems technician. Lift the door about halfway as illustrated below. An unbalanced garage door may not reverse ...which are under EXTREME tension. • Disable ALL locks and remove ALL ropes connected to garage door BEFORE installing and operating garage door opener to avoid entanglement. Sectional Door One-Piece Door Tools needed During assembly, installation and adjustment of balance. If balanced, it should stay...
...any ropes connected to garage door. • Complete the following test to make sure your door binds, sticks, or is out of the opener, instructions will call a trained door systems technician. Lift the door about halfway as illustrated below. An unbalanced garage door may not reverse ...which are under EXTREME tension. • Disable ALL locks and remove ALL ropes connected to garage door BEFORE installing and operating garage door opener to avoid entanglement. Sectional Door One-Piece Door Tools needed During assembly, installation and adjustment of balance. If balanced, it should stay...
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... 4 Safety Reversing Sensor Safety Gap between floor Reversing Sensor and bottom of door must not exceed 1/4" (6 mm). Planning Identify the type and height of your opener. Survey your garage area to see if any of Garage Door Extension Spring OR Torsion Spring Wallmounted Door Control Access Door --- --- -- Header Wall FINISHED CEILING...
... 4 Safety Reversing Sensor Safety Gap between floor Reversing Sensor and bottom of door must not exceed 1/4" (6 mm). Planning Identify the type and height of your opener. Survey your garage area to see if any of Garage Door Extension Spring OR Torsion Spring Wallmounted Door Control Access Door --- --- -- Header Wall FINISHED CEILING...
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... will depend on the model purchased. is missing, carefully check the packing material. Carton Inventory Your garage door opener is packaged in the foam. contain the motor unit and all parts illustrated below . 3245 (1), 3255 (1), 3255-2 (2) LOCK LIGHT Multi-Function Door Control Panel : SECURITY ® Single-Button Remote Control Remote Control Visor...
... will depend on the model purchased. is missing, carefully check the packing material. Carton Inventory Your garage door opener is packaged in the foam. contain the motor unit and all parts illustrated below . 3245 (1), 3255 (1), 3255-2 (2) LOCK LIGHT Multi-Function Door Control Panel : SECURITY ® Single-Button Remote Control Remote Control Visor...
3255 Manual
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... the Sprocket Cover • Position chain over sprocket. Squeeze the cover slightly and insert the front tab in the slot. To avoid SERIOUS damage to opener so one hole in rail and motor unit line up. • Thread one of the washered bolts part way in. Cut tape from rail, chain... and styrofoam. • REMOVE STYROFOAM. ASSEMBLY STEP 1 Attach the Rail to the Motor Unit To avoid installation difficulties, do not run the garage door opener until instructed to do so. • Remove the two washered bolts mounted in top of motor unit. • Position rail at a 45˚ angle to...
... the Sprocket Cover • Position chain over sprocket. Squeeze the cover slightly and insert the front tab in the slot. To avoid SERIOUS damage to opener so one hole in rail and motor unit line up. • Thread one of the washered bolts part way in. Cut tape from rail, chain... and styrofoam. • REMOVE STYROFOAM. ASSEMBLY STEP 1 Attach the Rail to the Motor Unit To avoid installation difficulties, do not run the garage door opener until instructed to do so. • Remove the two washered bolts mounted in top of motor unit. • Position rail at a 45˚ angle to...
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... Adjustment Step 3. INSTALLATION WARNING IMPORTANT INSTALLATION INSTRUCTIONS WARNING To reduce the risk of installation, test safety reversal system. NEVER connect garage door opener to power source until instructed to do not re-adjust the chain. Upon completion of SEVERE INJURY or DEATH: 1. This is too... necessary. Please read the following warnings before adjusting chain. READ AND FOLLOW ALL INSTALLATION WARNINGS AND INSTRUCTIONS. 2. Install garage door opener only on contact with the door closed. An improperly balanced door may not reverse when required and could be made by a ...
... Adjustment Step 3. INSTALLATION WARNING IMPORTANT INSTALLATION INSTRUCTIONS WARNING To reduce the risk of installation, test safety reversal system. NEVER connect garage door opener to power source until instructed to do not re-adjust the chain. Upon completion of SEVERE INJURY or DEATH: 1. This is too... necessary. Please read the following warnings before adjusting chain. READ AND FOLLOW ALL INSTALLATION WARNINGS AND INSTRUCTIONS. 2. Install garage door opener only on contact with the door closed. An improperly balanced door may not reverse when required and could be made by a ...
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... on the header wall above the high point: • 2" (5 cm) above the high point for sectional door and one -piece door without track: pivot hardware 8 Open your door. 1. Header Wall 2" (5 cm) Track Highest Point of Travel Door Sectional door with curved track Header Wall 8" (20 cm) Door Highest Point of Travel...
... on the header wall above the high point: • 2" (5 cm) above the high point for sectional door and one -piece door without track: pivot hardware 8 Open your door. 1. Header Wall 2" (5 cm) Track Highest Point of Travel Door Sectional door with curved track Header Wall 8" (20 cm) Door Highest Point of Travel...
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... Pin 5/16"x2-3/4" 10 Ring Fastener Header Wall Header Bracket Chain Pulley Bracket INSTALLATION STEP 3 Attach the Rail to the Header Bracket • Position the opener on a temporary support to allow the rail to secure. NOTE: If the door spring is in the way you'll need help. Have someone hold...
... Pin 5/16"x2-3/4" 10 Ring Fastener Header Wall Header Bracket Chain Pulley Bracket INSTALLATION STEP 3 Attach the Rail to the Header Bracket • Position the opener on a temporary support to allow the rail to secure. NOTE: If the door spring is in the way you'll need help. Have someone hold...
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...trolley can remain disconnected until Installation Step 12 is convenient for setting an ideal door-torail distance. • Remove foam packaging. • Raise the opener onto a stepladder. Header Bracket Top of the motor unit. ENGAGED Trolley Release Arm RELEASED ONE-PIECE DOOR WITHOUT TRACK A 2x4 on the top section...-PIECE DOOR WITH TRACK A 2x4 laid flat is completed. You will need help at this point if the ladder is not tall enough. • Open the door all the way and place a 2x4 on its side on its side is used to -rail distance. • Remove foam packaging. •...
...trolley can remain disconnected until Installation Step 12 is convenient for setting an ideal door-torail distance. • Remove foam packaging. • Raise the opener onto a stepladder. Header Bracket Top of the motor unit. ENGAGED Trolley Release Arm RELEASED ONE-PIECE DOOR WITHOUT TRACK A 2x4 on the top section...-PIECE DOOR WITH TRACK A 2x4 laid flat is completed. You will need help at this point if the ladder is not tall enough. • Open the door all the way and place a 2x4 on its side on its side is used to -rail distance. • Remove foam packaging. •...
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..."-18 FINISHED CEILING (Not Provided) Bolt 5/16"-18x7/8" Lock Washer 5/16" Nut 5/16"-18 12 Hanging brackets should be angled (Figure 1) to opener at this time. Drill 3/16" pilot holes in line with 5/16"-18x7/8" hex bolts, lock washers and nuts. 6. Operate the door manually. ... with 5/16"-18x1-7/8" lag screws. 5. Remove the 2x4. INSTALLATION STEP 5 Hang the Opener Three representative installations are not provided. 1. This bracket and fastening hardware are shown. Fasten the opener to required lengths. 3. Grease the top and underside of the hanging bracket to the hanging...
..."-18 FINISHED CEILING (Not Provided) Bolt 5/16"-18x7/8" Lock Washer 5/16" Nut 5/16"-18 12 Hanging brackets should be angled (Figure 1) to opener at this time. Drill 3/16" pilot holes in line with 5/16"-18x7/8" hex bolts, lock washers and nuts. 6. Operate the door manually. ... with 5/16"-18x1-7/8" lag screws. 5. Remove the 2x4. INSTALLATION STEP 5 Hang the Opener Three representative installations are not provided. 1. This bracket and fastening hardware are shown. Fasten the opener to required lengths. 3. Grease the top and underside of the hanging bracket to the hanging...
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...mounting screws or relocate the door control to a smoother surface. 3. (Standard installation only) Run bell wire up wall and across ceiling to the opener, twist same color wires together. NOTE: When connecting multiple door controls to motor unit. Insert wires into gang box) as follows: white to... height of 5 feet (1.5 m), and away from ALL moving parts of the door and door hardware. Fasten with a staple, creating a short or open position but will not return to the close position until completely closed. Adjust screw for snug fit. • Install top screw with door control push...
...mounting screws or relocate the door control to a smoother surface. 3. (Standard installation only) Run bell wire up wall and across ceiling to the opener, twist same color wires together. NOTE: When connecting multiple door controls to motor unit. Insert wires into gang box) as follows: white to... height of 5 feet (1.5 m), and away from ALL moving parts of the door and door hardware. Fasten with a staple, creating a short or open position but will not return to the close position until completely closed. Adjust screw for snug fit. • Install top screw with door control push...
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...or unexpectedly. • NEVER use emergency release handle unless garage doorway is 6 feet (1.83 m) above the floor. To prevent damage to the opener: • DO NOT use bulbs larger than 100W. • ONLY use emergency release handle to avoid entanglement. Weak or broken springs or unbalanced... the endpanel or light socket. Secure with a match or lighter to close the lens. • Use A19, standard neck garage door opener bulbs for approximately 4-1/2 minutes when power is CLOSED. To prevent possible SERIOUS INJURY or DEATH from the end of lens. Light bulb size...
...or unexpectedly. • NEVER use emergency release handle unless garage doorway is 6 feet (1.83 m) above the floor. To prevent damage to the opener: • DO NOT use bulbs larger than 100W. • ONLY use emergency release handle to avoid entanglement. Weak or broken springs or unbalanced... the endpanel or light socket. Secure with a match or lighter to close the lens. • Use A19, standard neck garage door opener bulbs for approximately 4-1/2 minutes when power is CLOSED. To prevent possible SERIOUS INJURY or DEATH from the end of lens. Light bulb size...
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...black (line) wire to establish permanent wiring connection. • Garage door installation and wiring MUST be grounded. • Reinstall the cover. The opener must be in the top of electric shock, your local code, refer to the screw on the brass terminal; INSTALLATION STEP 9 Electrical Requirements To... avoid installation difficulties, do not run the opener at this time. To prevent possible SERIOUS INJURY or DEATH from electrocution or fire: • Be sure power is grounded. Be sure ...
...black (line) wire to establish permanent wiring connection. • Garage door installation and wiring MUST be grounded. • Reinstall the cover. The opener must be in the top of electric shock, your local code, refer to the screw on the brass terminal; INSTALLATION STEP 9 Electrical Requirements To... avoid installation difficulties, do not run the opener at this time. To prevent possible SERIOUS INJURY or DEATH from electrocution or fire: • Be sure power is grounded. Be sure ...
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... INSTALLATION STEP 10 Install The Protector System® The safety reversing sensor must be connected and aligned correctly before the garage door opener will move in the path of its electronic beam. Either can be installed on the wall, the brackets must be securely fastened.... above floor Invisible Light Beam Protection Area Facing the door from a closing , the door will stop and reverse to the garage door opener BEFORE installing the safety reversing sensor. Be sure power is closing garage door: • Correctly connect and align the safety reversing sensor. ...
... INSTALLATION STEP 10 Install The Protector System® The safety reversing sensor must be connected and aligned correctly before the garage door opener will move in the path of its electronic beam. Either can be installed on the wall, the brackets must be securely fastened.... above floor Invisible Light Beam Protection Area Facing the door from a closing , the door will stop and reverse to the garage door opener BEFORE installing the safety reversing sensor. Be sure power is closing garage door: • Correctly connect and align the safety reversing sensor. ...
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... the back edge of the door, no higher than 6" (15 cm) above the floor. • Carefully measure and place right and left assemblies to the opener is disconnected. It should lie flush, with Concrete Anchors (Not Provided) Indicator Light Sensor Bracket 17 Figure 1 DOOR TRACK MOUNT (RIGHT SIDE) Door Track Lip...
... the back edge of the door, no higher than 6" (15 cm) above the floor. • Carefully measure and place right and left assemblies to the opener is disconnected. It should lie flush, with Concrete Anchors (Not Provided) Indicator Light Sensor Bracket 17 Figure 1 DOOR TRACK MOUNT (RIGHT SIDE) Door Track Lip...
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...) of insulation from both the sending and receiving eyes will reverse. ALIGNING THE SAFETY REVERSING SENSORS • Plug in both sensors to Opener Quick-Connect Terminals Bell Wire 1. The sending eye amber indicator light will blink 10 times. Lock in tab with lenses pointing toward each... Insert wires into the slot on each other across the door. If the receiving eye indicator light is already open wire to the opener quick-connect terminals. The opener lights will glow regardless of wires. To release or insert wire, push in place. • Loosen the receiving...
...) of insulation from both the sending and receiving eyes will reverse. ALIGNING THE SAFETY REVERSING SENSORS • Plug in both sensors to Opener Quick-Connect Terminals Bell Wire 1. The sending eye amber indicator light will blink 10 times. Lock in tab with lenses pointing toward each... Insert wires into the slot on each other across the door. If the receiving eye indicator light is already open wire to the opener quick-connect terminals. The opener lights will glow regardless of wires. To release or insert wire, push in place. • Loosen the receiving...
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... the door bracket on the previously marked vertical centerline used to side door bracket holes. NOTE: The 1/4"-14x5/8" self-threading screws are used for an opener installation door reinforcement kit. Contact your door manufacturer for use two 5/16" bolts, lock washers and nuts (not provided) (Figure 2B). Mark, drill holes and...
... the door bracket on the previously marked vertical centerline used to side door bracket holes. NOTE: The 1/4"-14x5/8" self-threading screws are used for an opener installation door reinforcement kit. Contact your door manufacturer for use two 5/16" bolts, lock washers and nuts (not provided) (Figure 2B). Mark, drill holes and...
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...in straight arm, disconnect straight arm. Proceed to outer trolley with bolts, lock washers and nuts. • Pull the emergency release handle toward the opener at a 45° angle so that line up and join sections. Figure 1 Figure 2 Inner Trolley Outer Trolley Ring Fastener Clevis Pin 5/16"x1...arm sections together. - Find two pairs of holes that line up and join with the 5/16"x1" clevis pin. Trolley will re-engage automatically when opener is fully closed. Secure the connection with cut end down as shown in Figures 1, 2 and 3. • Figure 1: - Select holes as far ...
...in straight arm, disconnect straight arm. Proceed to outer trolley with bolts, lock washers and nuts. • Pull the emergency release handle toward the opener at a 45° angle so that line up and join sections. Figure 1 Figure 2 Inner Trolley Outer Trolley Ring Fastener Clevis Pin 5/16"x1...arm sections together. - Find two pairs of holes that line up and join with the 5/16"x1" clevis pin. Trolley will re-engage automatically when opener is fully closed. Secure the connection with cut end down as shown in Figures 1, 2 and 3. • Figure 1: - Select holes as far ...
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...not extend far enough, adjust the limit further. Press the Door Control push button. Press the Door Control push button. Refer to the fully open position (parallel to the floor), and lift the door arm to make the connection. • Secure with a ring fastener. 2. One full...5 Inner Trolley Outer Trolley Door Arm Door Arm Connector Hole Emergency Release Handle Closed Door Inner Trolley Outer Trolley Correct Angle Door Arm Open Door Door with the remaining clevis pin. Turn the UP limit adjustment screw counter-clockwise 4 turns. - Door Bracket Ring Fastener Clevis...
...not extend far enough, adjust the limit further. Press the Door Control push button. Press the Door Control push button. Refer to the fully open position (parallel to the floor), and lift the door arm to make the connection. • Secure with a ring fastener. 2. One full...5 Inner Trolley Outer Trolley Door Arm Door Arm Connector Hole Emergency Release Handle Closed Door Inner Trolley Outer Trolley Correct Angle Door Arm Open Door Door with the remaining clevis pin. Turn the UP limit adjustment screw counter-clockwise 4 turns. - Door Bracket Ring Fastener Clevis...