Why might a mechanical guard be used instead of a fixed guard?

A mechanical guard is often preferred over a fixed guard primarily for the reason of facilitating machine access during maintenance. Unlike fixed guards, which are permanently attached and can restrict access, mechanical guards can be designed to move or open, allowing maintenance personnel access to parts of the machinery that may need to be serviced or checked. This design is essential in environments where regular maintenance is necessary, ensuring that safety is upheld while still allowing for efficient machine upkeep.

By enabling easier access, mechanical guards can help prevent the complications that arise from trying to maintain equipment with cumbersome protective barriers in place. This balance between maintaining safety and allowing for operational efficiency is crucial in industrial settings.