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The Chamberlain Group, Inc.
845 Larch Avenue
Elmhurst, Illinois 60126-1196
www.liftmaster.com
®
GARAGE DOOR OPENER
Model 3800C
For Residential Sectional Doors With
Torsion Assemblies Only
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 and cable tension monitor are
connected and properly aligned.
■ Periodic checks of th
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TABLE OF CONTENTS Introduction 2-5Operation 21-25 Safety symbol review and signal word review . . . . . . . .2 Operation safety instructions . . . . . . . . . . . . . . . . . . . . .21 Planning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3 Using your garage door opener . . . . . . . . . . . . . . . . . .21 Preparing your garage door . . . . . . . . . . . . . . . . . . . . . .4 Using the wall-mounted control console . . . . . . . . . . . .22 Tools . . . . . . . . . .
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Planning • The torsion bar must extend at least 1" to 5" (2.5 cm to Survey your garage area to see if any of the conditions below apply to your installation. Additional materials may 12 cm) past the bearing plate. be required. You may find it helpful to refer back to this • An electric outlet is required within 6' (1.8 m) of the page as you proceed with the installation of your opener. installation area. If outlet does not exist, contact a qualified electrician. Depending on your requirements, t
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1 Preparing your Garage Door WARNING WARNING Before you begin: To prevent possible SERIOUS INJURY or DEATH: • Disable locks. • ALWAYS call a trained door systems technician if garage • Remove any ropes connected to garage door. CAUTION WARNING door binds, sticks, or is out of balance. An unbalanced • Complete the following test to make sure your garage garage door may not reverse when required. door is balanced and is not sticking or binding: • NEVER try to loosen, move or adjust garage door
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LOCK LIGHT Carton Inventory Your garage door opener is packaged in one carton which contains the motor unit and the parts illustrated below. Note that accessories will depend on the model purchased. If anything is missing, carefully check the packing material. Remote Control Visor Clip ® SECURITY✚ 3-Button Remote Control (1) Remote Light Motion Detecting with Hardware Bag Door Control Console 2-Conductor Bell Wire White & White/Red Power Door Lock 2-Conductor White & White/Black Bell Wire w
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ASSEMBLY STEP 1 WARNING WARNING Attach the Collar to the Motor Unit To prevent possible SERIOUS INJURY OR DEATH, the collar To avoid installation difficulties, do not run the MUST be properly tightened. The door may NOT reverse garage door opener until instructed to do so. CAUTION WARNING correctly or limits may be lost due to collar slip. • Loosen the collar screws. • Attach collar to either the left or the right side of the Figure 1 motor unit. Ensure that the collar is seated all the way Coll
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WARNING WARNING INSTALLATION IMPORTANT INSTALLATION INSTRUCTIONS WARNING To reduce the risk of SEVERE INJURY or DEATH: 1. READ AND FOLLOW ALL INSTALLATION WARNINGS AND 7. NEVER wear watches, rings or loose clothing while INSTRUCTIONS. installing or servicing opener. They could be caught in garage door or opener mechanisms. 2. Install garage door opener ONLY on properly balanced and lubricated garage door. An improperly balanced door may 8. Install wall-mounted garage door control: not reverse wh
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NOTICE INSTALLATION STEP 2 WARNING WARNING Attach the Emergency Release Rope To prevent possible SERIOUS INJURY or DEATH from a and Handle falling garage door: CAUTION WARNING • Thread one end of the rope through the hole in the top • If possible, use emergency release handle to disengage of the red handle so “NOTICE” reads right side up as door ONLY when garage door is CLOSED. Weak or broken shown. Secure with an overhand knot at least 1" springs or unbalanced door could result in an open door
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Figure 1 INSTALLATION STEP 4 Attach the Cable Tension Monitor Opener (Required) Torsion Bar This opener comes standard with the cable tension monitor. It is supplied as a device to monitor the Drum cables for ANY slack that may occur and will reverse the door when excessive slack is detected, Cable eliminating service calls. 2"-6" The cable tension monitor must be connected and (5 cm- Cable properly installed before the garage door opener will 15 cm) Tension move in the down direction. Monitor
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LOCK LIGHT LOCK LIGHT WARNING WARNING INSTALLATION STEP 5 CAUTION WARNING Install the Control Console To prevent possible SERIOUS INJURY or DEATH from electrocution: Locate control console within sight of the door at a • Be sure power is not connected BEFORE installing minimum height of 5 feet (1.5 m) where small children control console. cannot reach, and away from moving parts of the door • Connect ONLY to 24 VOLT low voltage wires. and door hardware. The installation surface must be smooth a
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WARNING WARNING IMPORTANT SAFETY INSTRUCTIONS WARNING To reduce the risk of SEVERE INJURY or DEATH: 1. This portable luminaire has a polarized plug (one blade is 5. NEVER use with an extension cord unless plug can be wider than the other) as a feature to reduce the risk of fully inserted. electric shock. 6 DO NOT alter the plug. 2. This plug will fit in a polarized outlet ONLY one way. 7. Light is intended for ceiling mount and indoor 3. If the plug does not fit fully in the outlet, reverse t
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PERMANENT WIRING CONNECTION Flexible conduit PERMANENT WIRING CONNECTION INSTALLATION STEP 7 WARNING WARNING Electrical Requirements To prevent possible SERIOUS INJURY or DEATH from To avoid installation difficulties, do not run the electrocution or fire: CAUTION opener at this time. WARNING • Be sure power is not connected to the opener, and disconnect power to circuit BEFORE removing cover to To reduce the risk of electric shock, your garage door establish permanent wiring connection. opener h
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INSTALLATION STEP 8 Mount the Battery Backup Unit (BBU) (not provided) 475LMC Battery Backup Unit If the optional 475LMC battery backup unit is part of this installation it should be installed at this time. • The BBU can be mounted to either the ceiling or a wall within 3' (.9 m) of the motor unit. • Position the BBU as desired to a structural support (ceiling joist or wall stud). • Attach the BBU to the support using the mounting holes on either side of the BBU. • Secure the BBU using the 1-1/2
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INSTALLATION STEP 9 WARNING WARNING ® Install The Protector System Be sure power is not connected to the garage door opener The safety reversing sensor must be connected and BEFORE installing the safety reversing sensor. aligned correctly before the garage door opener will CAUTION WARNING To prevent SERIOUS INJURY or DEATH from a closing move in the down direction. This is a required safety garage door: device and cannot be disabled. • Correctly connect and align the safety reversing sensor. Thi
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INSTALLING THE BRACKETS DOOR TRACK MOUNT (RIGHT SIDE) Figure 1 Be sure power to the opener is disconnected. Install and align the brackets so the safety reversing sensors Door will face each other across the garage door, with the Track beam no higher than 6" (15 cm) above the floor. They Lip may be installed in one of three ways,as follows. Indicator Light Garage door track installation (preferred) (Figure 1): • Slip the curved arms over the rounded edge of each Sensor door track, with the curv
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MOUNTING AND WIRING THE SAFETY Figure 5 REVERSING SENSORS Wing Nut 1/4"-20 • Slide a 1/4"-20x1/2" carriage bolt head into the slot on each sensor. Use wing nuts to fasten safety reversing sensors to brackets, with lenses pointing toward each other across the door. Be sure the lens is not Carriage Bolt obstructed by a bracket extension (Figure 5). 1/4"-20x1/2" Lens • Finger tighten the wing nuts. TROUBLESHOOTING THE SAFETY • Run the wires from both safety reversing sensors to the REVERSING SENS
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LOCK LIGHT ADJUSTMENT STEP 1 WARNING WARNING Program the Travel Limits Without a properly installed safety reversal system, persons Travel limits regulate the points at which the door (particularly small children) could be SERIOUSLY INJURED CAUTION will stop when moving up or down. Follow the steps WARNING or KILLED by a closing garage door. below to set the limits. • NEVER learn forces or limits when door is binding or sticking. Repair door first. Indicator Figure 1 Light • Incorrect adjustmen
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LOCK LIGHT ADJUSTMENT STEP 2 WARNING WARNING Setting the Force Without a properly installed safety reversal system, persons The force setting button is located on the front panel. (particularly small children) could be SERIOUSLY INJURED The force setting measures the amount of force CAUTION WARNING or KILLED by a closing garage door. required to open and close the door. • NEVER learn forces or limits when door is binding or 1. Locate the purple button on the unit (Figure 1). sticking. Repair doo
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ADJUSTMENT STEP 3 WARNING WARNING Test the Safety Reversal System Without a properly installed safety reversal system, persons (particularly small children) could be SERIOUSLY INJURED TEST CAUTION WARNING or KILLED by a closing garage door. • With the door fully open, place a 1-1/2" (3.8 cm) board • Safety reversal system MUST be tested every month. (or a 2x4 laid flat) on the floor, centered under the • If one control (force or travel limits) is adjusted, the other garage door. control may al
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NOTICE ADJUSTMENT STEP 5 WARNING WARNING Test Cable Tension Monitor To prevent possible SERIOUS INJURY or DEATH from a falling garage door: If your cable tension monitor has been activated the LED CAUTION WARNING • If possible, use emergency release handle to disengage will blink 9 times. door ONLY when garage door is CLOSED. Weak or broken springs or unbalanced door could result in an open door ADJUSTMENT STEP 6 falling rapidly and/or unexpectedly. Test Power Door Lock • NEVER use emergency rel
