User manual LIFT-MASTER DH

[. . . ] ADDENDUM LOCK SENSOR (LOGIC 3) Models: DH, DJ, and DHJ APPLICATION REQUIREMENTS: This wiring modification is available to models H and J Logic operators. FUNCTIONS: This modification stops the operator from running when extra tension is sensed on the door from the mechanical door lock, obstruction or extensive binding. OPERATION: When unit senses load running open from close limit, Lock Sensor will stop operator. [. . . ] Keep hands CLEAR of sprockets, chains, and other moving parts when making adjustments. COURSE ADJUSTMENT (IF REQUIRED) 1. Loosen but do not remove two mounting screws. Fully tension final reduction chain and rotate lock sensor until switch is in activation mode. Tighten mounting screws (2) to secure lock sensor position. [. . . ] Repeat fine adjustments. CAUTION Final Reduction Chain Chain Idler Sprocket must engage top side of reduction chain. Lock Sensor Assembly Mounting Screws Lock Sensor Switch (held to normally closed). To adjust opening force tighten or loosen adjustment on wing nut accordingly. 01-31376B © 2006, The Chamberlain Group, Inc. [. . . ]