The following is a summary of common faults in Explosion Proof Chain Pneumatic Hoists:

1、 Electrical control system malfunction

Power issue:

The crane cannot be started or has difficulty starting, which may be due to unstable power supply voltage, power line faults, or poor contact of power plugs.

Controller malfunction:

The controller is malfunctioning and unable to accurately control the lifting, stopping, and other operations of the crane. Possible reasons may include internal circuit faults in the controller, damaged buttons, or loose wiring.

Sensor malfunction:

Malfunctions in position sensors, weight sensors, etc. result in the crane being unable to accurately perceive its current status, thereby affecting its normal operation.

2、 Pneumatic system malfunction

Insufficient air pressure:

Insufficient air pressure in the pneumatic system of the crane causes the cylinder to malfunction, thereby affecting the lifting performance of the crane. Possible reasons may include insufficient air source pressure, air pipe leakage, or poor cylinder sealing.

Cylinder malfunction:

Cylinder piston jamming, cylinder wear, or damaged cylinder seals can all cause the cylinder to malfunction, thereby affecting the stability and lifting speed of the crane.

Valve malfunction:

Blockage, damage, or improper adjustment of the air valve may cause the pneumatic system to malfunction, thereby affecting the performance of the crane.

3、 Mechanical system malfunction

Chain malfunction:

Chain breakage, wear, or deformation may cause the crane to malfunction or pose a safety hazard. Regularly check the wear of the chain and replace severely worn chains in a timely manner.

Gearbox malfunction:

Abnormal noise from the reducer, overheating, or damaged gears can all cause the crane to malfunction. Regularly check the operating status of the reducer and replace damaged components in a timely manner.

Brake malfunction:

Brake failure or poor braking effect may cause the crane to lose control or fail to stop accurately during the lifting process. The performance and wear of the brake should be checked regularly to ensure that it is in good condition.

4、 Safety device malfunction

Limit device malfunction:

Malfunction or improper adjustment of the limiter may cause the crane to exceed the preset range during lifting, leading to safety accidents. The performance and adjustment of the limiter should be checked regularly to ensure its accuracy and correctness.

Overload protection device malfunction:

The overload protection device may not work properly or be adjusted improperly, which may cause the crane to continue operating under overload conditions, thereby exacerbating equipment wear and damage. The performance and adjustment of overload protection devices should be regularly checked to ensure that they are in effective condition.

5、 Other faults

Poor lubrication:

Poor lubrication of equipment may lead to increased friction, intensified wear, and temperature rise. The lubrication condition of the equipment should be checked regularly, and lubricants should be added or replaced in a timely manner.

Improper installation and debugging:

Improper installation or inaccurate debugging of equipment may result in unstable operation or malfunctions. It should be ensured that the installation and commissioning of the equipment comply with the manufacturer's requirements and standards.

Preventive measures and suggestions

Regular inspection and maintenance:

Regularly conduct comprehensive inspections and maintenance of explosion-proof chain pneumatic cranes, including electrical systems, pneumatic systems, mechanical systems, and safety devices.

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