User manual CHAMBERLAIN MGH

[. . . ] OWNER'S MANUAL MODELS MGH & MGJ MEDIUM DUTY DOOR OPERATOR 2 YEAR WARRANTY Serial # (located on electrical box cover) Installation Date Wiring Type www. liftmaster. com NOT FOR RESIDENTIAL USE 41B6 TABLE OF CONTENTS CARTON INVENTORY Carton Inventory . 4 DIAGRAMS Single Phase Schematic Diagram for MGJ/MGH . 12 Three Phase Schematic Diagram for MGJ Only . 13 PREPARATION MGJ Opposite Handing Preparation . [. . . ] Raise operator to approximate mounting position and position chain over operator sprocket. Raise or lower operator until the chain is taut (not tight). Make sure the operator output shaft is parallel to door shaft and sprockets are aligned. When in position, secure the operator to wall or mounting bracket. Install Hand Chain (Model MGH only) Place hand chain around hand chain wheel. Be sure to pass it through both openings in the chain guide. Remove enough links so chain hangs approximately 2' (. 61 m) above the floor. Mount Chain Keeper / Keyhole Bracket Using suitable hardware mount the chain keeper approximately 4' (1. 22 m) above the floor, near the free hanging chain. Remove disconnect sash chain from bag and place the end through the keyhole in the chain keeper. Remove excess links if necessary. Typical Right Hand Wall Mounted Operator FIGURE 2 OPTIONAL Mounting Bracket P/N 089098 FIGURE 3 Be sure door sprocket is properly aligned with drive before securing to the shaft. 7 I N S TA L L AT I O N MANUAL OPERATION This operator is equipped with a floor level disconnect chain to allow for manual operation of the door in case of emergency or power failure. To disengage, pull the sash chain and secure in the disengaged position by slipping the end through the keyhole bracket mounted on the wall. Or if emergency egress device is used, pull handle to disengage operator from door. COIL CORD Connect operator end of coil cord to junction box (not provided) fastened to the wall approximately halfway up the door opening. AVERTISSEMENT ATTENTION WARNING LIMIT SWITCH ADJUSTMENT ADJUSTMENT WARNING WARNING NOTE: Make sure the limit nuts are positioned between the limit switches before proceeding with adjustments. Depress retaining plate to allow nut to spin freely. After adjustment, release plate and move nut back and forth to ensure it is fully seated in slot. To increase door travel, spin nut away from limit switch. To decrease door travel, spin limit nut toward limit switch. Adjust open limit nut so that door will stop in open position with the bottom of the door even with top of door opening. Adjust close limit nut so that the limit switch is engaged as door fully seats at the floor. CAUTION To avoid SERIOUS PERSONAL INJURY or DEATH from electrocution, disconnect electric power BEFORE manually moving limit nuts. AVERTISSEMENT ATTENTION CLOSE Limit Switch AVERTISSEMENT OPEN Limit Switch AVERTISSEMENT Actuator Retaining Plate SAFETY (Aux. Open) Limit Switch ADVERTENCIA PRECAUCIÓN ADVERTENCIA ADVERTENCIA 9 G POWER WIRING & GROUND WIRING WARNING WARNING To reduce the risk of SEVERE INJURY or DEATH: · ANY maintenance to the operator or in the area near the operator MUST NOT be performed until disconnecting the electrical power and locking-out the power via the operator power switch. Upon completion of maintenance the area MUST be cleared and secured, at that time the unit may be returned to service. · Disconnect power at the fuse box BEFORE proceeding. [. . . ] Use SAE 30 Oil (Never use grease or silicone spray). Motor bearings are rated for continuous operation. Inspect and service whenever a malfunction is observed or suspected. HOW TO ORDER REPAIR PARTS OUR LARGE SERVICE ORGANIZATION SPANS AMERICA Installation and service information are available. Call our TOLL FREE number: 1-800-528-2806 www. liftmaster. com AVERTISSEMENT CAUTION: BEFORE SERVICING, ALWAYS DISCONNECT OPERATOR FROM POWER SUPPLY. AVERTISSEMENT ADVERTENCIA ADVERTENCIA 14 THIS PAGE INTENTIONALLY LEFT BLANK M G H I L L U S T R AT E D PA R T S 11 1 4 2 K1 (K75-12783) 5 K2 (K72-12789) 9 3 6 7 8 10 K3 (K75-12829) 16 REPLACEMENT PART KITS MGH Refer to the parts lists below for replacement kits available for your operator. [. . . ]