What can you do when power to your actuator is lost unexpectedly and you need to move the gearing? The manual override option, which is available with several Thomson electric linear actuators, can solve this dilemma. Note: Electrak HD shown in video. The tool shown is a low-torque electric screwdriver. Please do not use high-torque/RPM power tools when using the manual override as it can result in damage to the actuator.