LiftMaster MGJ Installation Manual - Page 15

ADJUSTMENT NG ADJUST THE LIMITS N To avoid SERIOUS personal INJURY or DEATH from electrocution: WARNING WARNING • Disconnect electric power BEFORE performing ANY adjustments or maintenance. 1 Depress retaining plate. 2 Adjust OPEN limit. 3 Adjust CLOSE limit. EMENT Retaining Plate OPEN Limit Nut OPEN Limit Switch CLOSE Limit Nut CLOSE Limit Switch ON SAFETY Limit Switch Decrease Door Travel AVERTISSEMENT Increase Door Travel AVERTISSEMENT Decrease Door Travel Increase Door Travel NOTE: When retaining plate is released, verify that the retaining plate is fully seated with the notches of the limit nut. ADJUST THE CLUTCH FOR MODELS MJ, MH, AND MHS ONLY 1 Apply power to operator. 2 Turn clutch nut to release tension. 3 Re-tighten nut until there is just enough tension to permit smooth operation. NCIA ADVERTENCIA 4 Replace cotter pin. Bend ends of cotter pin to secure clutch nut. IÓN ADVERTENCIA A B To Loosen To Tighten Clutch Nut 15