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What stopping devices are required on vertical platforms?

  1. Hydraulic brakes

  2. Upper limit switches

  3. 2 pan switches with a maximum of 15 lbs pressure

  4. Emergency stop button

The correct answer is: 2 pan switches with a maximum of 15 lbs pressure

The correct stopping devices required on vertical platforms include upper limit switches. These switches play a crucial role in ensuring safety by preventing the platform from moving beyond its intended upper limit. When the platform reaches the uppermost position, the upper limit switch activates, stopping the platform's ascent and preventing potential accidents or equipment damage. While the options highlight various safety measures, upper limit switches are specifically mandated to control the movement of vertical platforms. This ensures not only the safety of the users but also the integrity of the platform's mechanical systems. In contrast, hydraulic brakes, pan switches, and emergency stop buttons serve different purposes and may not be sufficient as standalone safety devices for vertical platform operations.