How are Alimak Safety Devices tested?

The Alimak safety device is a critical overspeed protection system designed to stop a construction hoist or industrial elevator in the event of an overspeed situation. To help ensure ongoing reliability, it should be tested every six months by authorised personnel.

What is a drop test?

A drop test is a controlled safety check that confirms an Alimak safety device will activate correctly in an emergency. It verifies that the construction hoist or industrial elevator can be safely stopped if it every exceeds its designed operating speed.

Why is a drop test necessary?

The safety device is a critical last resort protection system. A drop test provides assurance that this device will function exactly as intended if an abnormal or fault condition occurs, helping to protect people, equipment and the structure.

Does a drop test mean something is wrong with the hoist or elevator?

No. A drop test is not carried out because of a fault. It is a preventative safety check performed to confirm that the safety system remains fully operational and compliant.

How often does a drop test need to be done?

Drop test frequency depends on local regulations, site requirements, and operating conditions. It is typically included as part of scheduled safety inspections or following major service work.

What happens during a drop test?

During the test, conditions are created to confirm that the safety device:

• Detects an overspeed situation
• Engages automatically
• Brings the construction hoist or industrial elevator to a smooth, controlled stop

The results confirm the system is ready to protect in a real-world emergency.

What does a successful drop test show?

A successful drop test demonstrates that:

• The safety device responds as designed
• Braking performance is controlled and effective
• The equipment continues to meet safety and compliance expectations

Is the hoist or elevator safe to use after a drop test?

Yes. Once the test is completed, inspected and correctly reset by authorised personnel, the construction hoist or industrial elevator may be returned to service in accordance with applicable procedures and regulations.

How does this relate to the Alimak Safety Device Exchange System?

Regular testing, including drop tests, helps ensure safety devices remain reliable throughout their service life. Exchanging the safety device at the recommended intervals further supports long-term safety, compliance, and reliability.

Need to exchange your safety device? Speak to your local representative today: