Learn how often automatic doors should be inspected and maintained and which factors increase the need for preventive service.

Learn the warning signs of automatic door operator problems and how mechanical resistance, controls and sensors can affect the powered system.

Learn why an automatic door may stop partway through opening or closing, including sensor, operator and mechanical resistance problems.

Learn what grinding, clicking, squeaking and other automatic door noises may indicate and when professional inspection is recommended.

Learn why an automatic door may fail to detect approaching users and how sensor position, detection zones and activation controls affect operation.

Learn why an automatic door may repeatedly open and close without normal traffic, including sensor and control problems.

Learn why an automatic door may become slow, including operator, hardware, alignment and mechanical resistance problems.

Learn why an automatic door may stay open or fail to close, including sensor, operator, alignment and obstruction problems.

Learn why an automatic door may not open, including sensor, power, operator, access-control and mechanical door problems.