When the button is released, the Upender will stop. Once the rotating platform reaches the end of its cycle, they engage the limit switches to prevent further rotation.
If a lift is provided for maintenance operations, the operator simply presses the up and down button and then releases it, and the hoist will travel 90 degrees until it reaches its travel limit, or until the operator presses the stop button, at which point it will stop.
Refer to the power wiring diagram to connect the power supply. Check the correct polarity. This can be done with the cradle at the "V" position. Rotate the cradle until one of the tables is close to level. Push the cradle to the level just past. If the bracket stops automatically, the polarity is correct. If the watch passes the limit switch and presses the manual stop, the polarity needs to be reversed.