These are items that can easily be checked and do not require any tools. This is what guides in determining which sensor to check. For example, if the chair was traveling down the stairs and the footrest hit an obstruction you would be able to move the lift back up the stairs. This will allow a chair to move in the opposite direction of an obstruction. Each sensor will stop the lift in a specific direction and are referred to as directional sensors. These sensors can become stuck or jammed. These sensors are directional and are typically located on a spring-loaded bar, plate, or tab surrounding the footrest. Similar to the armrest the footrest also has sensors that can stop the lift from moving.
The armrest can be compared to a main sensor in terms of operation and if provided will not let a lift move in either direction until the armrest is lowered.
For the lift to move the armrest should be folded down in a horizontal position. Most chairlifts are equipped with armrest sensors that can detect if the chair arms are up or down in the normal operating position.
