As shown in the illustration of an electrically operated watertight door controller, how is the motor stopped automatically when the door is wedged closed? EL-0115

Correct Answer: Option D — Action of door closed limit switch (LSC).

Door closed limit switches (LSC) actuate mechanically when the door reaches the fully closed and wedged position, opening control circuits to de-energize the motor and prevent mechanical jamming or burnout in accordance with 46 CFR requirements.