The following is a summary of some common faults of explosion proof chain hoist:

1、 Electrical malfunction

Motor malfunction:

The motor is overheated, burnt out, or unable to start.

Possible reasons include power supply issues, motor overload, winding short circuits or open circuits, etc.

Control system malfunction:

Button malfunction, indicator light not on, or controller not functioning properly.

Possible reasons may include circuit faults, controller damage, or wiring errors.

2、 Mechanical malfunction

Chain malfunction:

Chain breakage, wear or deformation.

Possible reasons may include overloading, poor chain quality, or long-term wear and tear.

Gearbox malfunction:

The reducer makes abnormal noise, overheats or cannot operate normally.

Possible reasons may include gear wear, bearing damage, or poor lubrication.

Brake malfunction:

Brake failure, poor braking effect, or inability to release.

Possible reasons may include brake pad wear, spring failure, or improper adjustment.

3、 Safety device malfunction

Limit device malfunction:

The limiter is malfunctioning and cannot accurately limit the lifting height of the crane.

Possible reasons may include damage to the limiter, improper adjustment, or sensor malfunction.

Overload protection device malfunction:

The overload protection device cannot work properly, and cannot issue an overload alarm or cut off the power supply in a timely manner.

Possible reasons may include sensor malfunction, circuit malfunction, or improper adjustment.

4、 Other faults

Lubrication system malfunction:

Poor lubrication leads to increased equipment wear and tear.

Possible reasons may include insufficient lubricating oil, poor oil quality, or blockage of the lubrication system.

Installation and debugging faults:

Improper installation or inaccurate debugging of equipment can lead to unstable operation or malfunctions.

Possible reasons include installation process not meeting requirements, improper setting of debugging parameters, etc.

Preventive measures and suggestions

Regular inspection and maintenance:

Regularly conduct comprehensive inspections of explosion-proof chain hoists, including electrical systems, mechanical systems, safety devices, etc.

Timely replace severely worn components and keep the equipment in good condition.

Correct use and operation:

Strictly follow the operating procedures to use the equipment and avoid dangerous behaviors such as overloading and speeding.

Operators should be familiar with equipment performance and operating methods to ensure correct operation.

Strengthen training and safety awareness:

Regularly provide safety training and emergency drills to operators to enhance their safety awareness and emergency response capabilities.

Strengthen equipment safety management to ensure that the equipment is in a safe and controllable state.

The main equipment produced by Hebei Makita: stage electric hoist, electric chian hoist, wire rope electric hoist，Hand chain hoist, lever hoist, pneumatic hoist and other lifting equipment