Eight Common Fault Causes and Solutions of Electric Hoists

Electric hoists are essential lifting devices used in various industries. Like any mechanical equipment, they can experience faults and malfunctions over time. Here are eight common fault causes and their solutions for electric hoists:

1. Fault Cause: OverloadingSolution: Always adhere to the specified load capacity of the hoist. Avoid lifting loads that exceed the rated capacity to prevent damage to the hoist components. Use a load indicator or weigh the load before lifting.

2. Fault Cause: Electrical IssuesSolution: Check the power supply, control panel, and wiring for any loose connections or damaged components. Ensure that the hoist is receiving the correct voltage and that the electrical system is properly grounded.

3. Fault Cause: OverheatingSolution: Overheating can be caused by prolonged and continuous operation. Allow the hoist to cool down after extended use, and avoid operating the hoist beyond its duty cycle. Regularly inspect the motor and gearbox for signs of overheating and address any issues promptly.

4. Fault Cause: Hoist Jamming or StallingSolution: Check for obstructions or foreign objects that may be preventing the hoist from moving freely. Inspect the gearbox and lubricate it regularly to ensure smooth operation. If the hoist is still jammed, consult a qualified technician for a thorough inspection.

5. Fault Cause: Brake FailureSolution: Test the hoist's brake regularly to ensure it engages and holds the load securely when not in use. If the brake is not functioning correctly, replace it immediately with a suitable and approved replacement part.

6. Fault Cause: Limit Switch MalfunctionSolution: Limit switches control the upper and lower travel limits of the hoist. If the hoist over-travels or does not reach the required height, check the limit switches for proper adjustment or replace them if they are faulty.

7. Fault Cause: Chain or Wire Rope DamageSolution: Inspect the chain or wire rope regularly for signs of wear, such as broken strands or kinks. Replace any damaged components immediately with compatible and high-quality replacements.

8. Fault Cause: Control System IssuesSolution: If the control system is malfunctioning, check the control pendant or remote for damaged buttons or wiring. Ensure that the control system is properly programmed and calibrated. If necessary, seek assistance from the hoist manufacturer or a qualified electrician.

Regular maintenance, proper operation, and timely addressing of any faults are crucial to ensuring the safe and efficient operation of electric hoists. It's essential to follow the manufacturer's guidelines and schedule routine inspections to keep the hoist in optimal working condition. If you encounter any complex or severe issues, always consult a professional technician or the hoist manufacturer for appropriate solutions.