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GARAGE DOOR OPENER ABRIDOR DE PUERTA DE COCHERA DE For Residential Use Only/Sólo para uso residencial Model/Modelo • 139.53920DM Read and follow all safety rules and Leer y seguir todas las reglas de seguridad operating instructions before fi rst use of y las instrucciones de operación antes de...
TABLE OF CONTENTS Introduction Adjustment 27-29 Safety symbol and signal word review .....2 Adjust the travel limits ....... .27 Preparing your garage door .
Preparing your garage door Before you begin: To prevent possible SERIOUS INJURY or DEATH: • Disable locks. • ALWAYS call a trained door systems technician if garage door • Remove any ropes connected to garage door. binds, sticks, or is out of balance. An unbalanced garage door may NOT reverse when required.
Planning Identify the type and height of your garage door. Survey your • Do you have an access door in addition to the garage door? garage area to see if any of the conditions below apply to your If not, Model 53702 Emergency Key Release is required. See installation.
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Planning (Continued) ONE-PIECE DOOR INSTALLATIONS Without a properly working safety reversal system, persons • Generally, a one-piece door does not require reinforcement. If (particularly small children) could be SERIOUSLY INJURED or your door is lightweight, refer to the information relating to KILLED by a closing garage door.
Carton Inventory Your garage door opener is packaged in one carton which contains Parts may be stuck in the foam. Hardware for assembly and the motor unit and all parts illustrated below. Accessories will installation is shown on the next page. Save the carton and depend on the model purchased.
ASSEMBLY STEP 1 Assemble the Rail & Install the Trolley To prevent INJURY from pinching, keep hands and fi ngers away To avoid installation diffi culties, do not run the garage door from the joints while assembling the rail. opener until instructed to do so. The front rail has a cut out “window”...
ASSEMBLY STEP 2 Fasten the Rail to the Motor Unit To avoid SERIOUS damage to garage door opener, use ONLY • Insert a 1/4"-20x2-1/2 bolt, washer and spacer into the cover those bolts/fasteners mounted in the top of the opener. protection bolt hole on the back end of the rail as shown.
ASSEMBLY STEP 4 Install the Chain/Cable To avoid possible SERIOUS INJURY to fi ngers from moving 1. Pull the cable around the idler pulley and toward the trolley. garage door opener: 2. Connect the cable to the retaining slot on the trolley, as shown •...
ASSEMBLY STEP 5 Tighten the Chain • Spin the inner nut and lock washer down the trolley threaded Figure 1 Trolley shaft, away from the trolley. Outer Lock Threaded Washer Shaft • To tighten the chain, turn outer nut in the direction shown To Tighten Outer Nut (Figure 1).
INSTALLATION STEP 1 Unfi nished Ceiling Determine the Header Bracket Location OPTIONAL CEILING MOUNT HEADER Header Wall BRACKET To prevent possible SERIOUS INJURY or DEATH: Vertical Centerline • Header bracket MUST be RIGIDLY fastened to structural of Garage Door support on header wall or ceiling, otherwise garage door Structural might NOT reverse when required.
INSTALLATION STEP 2 Install the Header Bracket You can attach the header bracket either to the wall above the garage door, or to the ceiling. Follow the instructions which will Wall Mount work best for your particular requirements. Do not install the header bracket over drywall.
INSTALLATION STEP 3 Attach the Rail to the Header Bracket • Position the opener on the garage floor below the header bracket. Use packing material as a protective base. NOTE: If the door spring is in the way you’ll need help. Have someone hold the opener securely on a temporary support to allow the rail to clear the spring.
INSTALLATION STEP 4 Position the Opener To prevent damage to garage door, rest garage door opener rail Follow instructions which apply to your door type as illustrated. on 2x4 placed on top section of door. SECTIONAL DOOR OR ONE-PIECE DOOR WITH TRACK A 2x4 laid fl...
INSTALLATION STEP 5 Hang the Opener To avoid possible SERIOUS INJURY from a falling garage door Three representative installations are shown. Yours may be opener, fasten it SECURELY to structural supports of the different. Hanging brackets should be angled (Figure 1) to provide garage.
INSTALLATION STEP 6 Install the Door Control To prevent possible SERIOUS INJURY or DEATH from Locate door control within sight of door, at a minimum height of electrocution: parts of door. 5 feet (1.52 m) where small children cannot reach, away from •...
INSTALLATION STEP 7 Install the Lights To prevent possible OVERHEATING of the endpanel or light • Install a 75 watt maximum light bulb in the socket. Light bulb socket: size should be A19, standard neck only. The lights will turn ON •...
INSTALLATION STEP 9 Electrical Requirements To prevent possible SERIOUS INJURY or DEATH from To avoid installation diffi culties, do not run the opener at this electrocution or fi re: time. • Be sure power is NOT connected to the opener, and To reduce the risk of electric shock, your garage door opener has a disconnect power to circuit BEFORE removing cover to grounding type plug with a third grounding pin.
INSTALLATION STEP 10 Install The Protector System Be sure power is NOT connected to the garage door opener The safety reversing sensor must be connected and aligned BEFORE installing the safety reversing sensor. correctly before the garage door opener will move in the down To prevent SERIOUS INJURY or DEATH from a closing garage direction.