Remote valve operators are frequently fitted with a hand wheel for local operation if the motor fails. If this is so, what is the procedure for local manual control?

Correct Answer: Option A — First move the lever to disengage the motor clutch, and then rotate the hand wheel.

Remote valve actuators incorporate a declutching mechanism to isolate the electric motor from the manual handwheel drive train. Engaging the manual mode requires shifting the clutch lever to the 'manual' position, which mechanically disconnects the motor gear train, preventing the handwheel from back-driving the motor and ensuring safe local operation.