When using a chain electric hoist for lifting operations, there are several situations where the lifting operation needs to be stopped to ensure safety. Here is a detailed list and explanation of these situations:

Heavy objects are connected to the ground or other objects:

If heavy objects are connected or implicated with other objects, it may lead to overweight or involve the connected items, causing unnecessary losses and dangers.

Before lifting operations, it is necessary to ensure that the heavy object is not connected to other objects.

Power supply issue:

If the electric hoist is not connected to the rated working voltage, the electric hoist will not work.

This may include situations such as power failure, phase loss (electrical damage to the main and control circuits, circuit disconnection or poor contact), and low voltage (motor terminal voltage is more than 10% lower than the rated voltage).

In these situations, the electric hoist should stop working and check the power system before lifting until the problem is resolved.

Overloading use:

The rated load of an electric hoist is limited, and lifting beyond its load-bearing capacity is very dangerous.

Overloading may cause motor overheating, motor damage, and even serious safety accidents.

Before lifting, ensure that the weight of the lifted object does not exceed the rated load of the electric hoist.

Equipment malfunction or abnormality:

If there are any abnormalities or malfunctions during the use of the electric hoist, such as excessive motor temperature rise or small brake clearance, the lifting operation should be stopped immediately.

And conduct maintenance on the equipment, eliminate faults before use.

Improper operation:

Irregular operating methods may also cause the electric hoist to stop working, such as tilting and lifting, excessive and frequent use of limit switch devices, etc.

Operators should receive professional training and strictly follow the operating procedures.

Safety device triggered:

Electric hoists are usually equipped with safety devices such as limiters and overload protectors.

If these safety devices are triggered (such as reaching the lifting limit position, overload, etc.), the electric hoist will automatically stop working.

The operator should check the triggering cause and eliminate the hidden danger before lifting.

Other precautions:

Before carrying out any lifting action, it is necessary to confirm that the correct lifting rope is being used, the position of the lifting rope is correct, and the safety plate is supporting the hook.

Operators should operate buttons steadily and accurately, avoiding rapid and intermittent operations or excessive jogging.

During the lifting operation, the operator must face and pay attention to the lifted object, and not turn their back or ignore it.

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