What is “release to reactivate”?
“Release to reactivate” is a safety mechanism in tail lift safety systems: after the system detects a person or obstacle in the operating area and stops the platform, the operator must release the control button and press it again before the tail lift can continue.
The design looks simple, but it is the key to preventing unintended continued operation.
Why not hold the button?
A tail lift uses hydraulic power to raise and lower a platform that is strong enough to cause serious crushing injuries. If the control design allowed the button to be held continuously, an operator whose view is blocked or who is distracted could fail to notice someone entering the danger area.
“Release to reactivate” forces the operator to confirm the situation after every stop:
- the operator is aware that the system has stopped the platform
- before pressing again, the operator has a chance to re-check the area around the tail lift
- the platform will not continue running if the button is stuck or fails
Combined with fail-safe design
“Release to reactivate” usually works together with a fail-safe design: if the sensing system fails, the tail lift stops and locks automatically, so it cannot operate without protection. Together the two mechanisms provide double protection.
When buying a tail lift safety system, confirm that both functions are included and that the product complies with relevant standards such as EN1756-1:2021 and ISO 13854:2019.