Only Trained Personnel Should Operate the Hoist The operation of the electric hoist should only be handled by individuals who have received proper training in using the equipment. This ensures that the operator is knowledgeable about safety practices and the operational procedures required for safe usage.
Do Not Operate in Explosive Atmospheres The electric hoist should never be used in environments where explosive gases or materials are present. The risk of sparking from electrical components in these environments could lead to dangerous explosions, so it is crucial to follow this guideline strictly.
Correct Positioning of Load Hook When using the hoist, ensure that the load hook is properly positioned inside the safety latch. This prevents the load from slipping or falling during lifting and guarantees safe operation.
Avoid Using Defective Hoisting Chains or Cables The hoisting chains or cables used with the electric hoist must be in good condition and meet the required safety standards. Using damaged or defective components can lead to accidents and mechanical failure.
Ensure Proper Voltage and Frequency The electric hoist should only be operated using the specified voltage and frequency (Hz). Using incorrect electrical specifications can result in malfunction, overheating, or electrical hazards.
Proper Grounding to Prevent Electric Shock For safety purposes, the hoist must be grounded properly before operation. This helps prevent electric shock, ensuring that the user and surrounding personnel remain safe from electrical hazards.
Verify Power Supply Specifications It is important to check whether the hoist is connected to the correct power source, whether it is three-phase or single-phase electrical supply, to ensure safe operation.
Secure Installation of the Electric Hoist The hoist must be installed on a robust and durable structural framework. It should be securely mounted to prevent any movement or instability during operation, ensuring the hoist performs reliably under load.
Allow Motor to Stop Completely Before Reversing Before reversing the hoist, make sure the motor has completely stopped. Operating the hoist in reverse while the motor is still running could lead to damage or malfunction.
Avoid Abrupt Lifting and Lowering Movements The load should be lifted and lowered gradually to avoid sudden, jerky movements. Abrupt lifting and lowering can cause the load to become unstable or strain the hoist mechanism.
Ensure Proper Positioning of Power Cables When installing the electric hoist, ensure that the power cables do not pass over the gear mechanism or the lifting ring. This will prevent potential damage to the cables and electrical components.
Limit Use of Limit Switch Devices Do not rely excessively on the limit switch mechanism. The limit switches are safety features designed to prevent over-travel; using them beyond their intended purpose could lead to wear and failure.
Prevent Excessive Swinging of Loads While lifting or transporting a load, excessive swinging should be avoided. Swinging can cause instability, leading to accidents and potential damage to both the hoist and the load.
Ensure Load Stability Before Lifting Never attempt to lift a load if it is unbalanced or unstable. Lifting an unbalanced load can cause tipping or shifting, which increases the risk of accidents and damage.
Avoid Dropping the Hoist from Heights Never allow theelectric chain hoistto fall from a height. Dropping the hoist could cause irreparable damage to the unit, creating potential hazards for operators and other personnel in the vicinity.
Do Not Use Hoist Chains as Welding Electrodes The chains used in the electric hoist should never be used as welding electrodes. Doing so can compromise the integrity of the chains, leading to failure during hoisting operations.
Do Not Use Hoist for Welding or Electrical Work Avoid using the hoist to support loads for welding or electrical work. Electrical currents used during welding can damage the hoist’s chains and internal mechanical or electrical components.
Do Not Modify the Hoist’s Internal Mechanisms or Electrical Systems Never attempt to modify or alter the electric hoist’s internal mechanisms, electrical circuits, or structure. Such modifications can compromise the safety and integrity of the hoist, making it prone to malfunction.
Raise the Load Hook When Not in Use After finishing hoist operations, always raise the load hook to prevent accidental contact with personnel walking underneath. This ensures that the area remains clear and minimizes the risk of injury.
Ensure Proper Alignment of Buttons and Chains After Use After operation, the control button and load hook chain should be properly suspended and aligned in a vertical position to ensure that the equipment is ready for the next use and remains safe.
Do Not Lubricate Hoist Tracks The tracks used for the horizontal movement of the hoist should never be lubricated. Applying oil or other lubricants can cause the hoist to slip or become unstable, leading to a potential safety hazard.
Check Specifications When Replacing the Chain Bag When replacing the chain bag, make sure that the new one matches the correct specifications in terms of size and capacity. Incorrectly sized bags could result in malfunction and increased wear on the hoist.
Never Overload the Hoist Overloading the hoist is not only dangerous but also strictly prohibited. Operating the hoist beyond its rated capacity could lead to failure of the hoist and cause severe accidents.
Prevent the Load from Contacting the Chain Bag When lifting a load, make sure that the upper portion of the load does not touch or obstruct the chain bag, as this can affect the smooth operation of the hoist and damage the chain.
Prohibit Lifting of Personnel The hoist should never be used for lifting personnel. This is a serious safety violation and can lead to accidents, as hoists are designed solely for lifting materials and not people.
Do Not Stand or Walk Under Suspended Loads It is prohibited for anyone to be under the load being lifted or in the path of the load during transportation. Personnel should always stay clear of the area beneath the hoist and load to avoid the risk of injury.
Store Load in a Safe Position After Use After use, always lower the load and ensure it is safely stored. The hoist should not leave the load suspended in the air when not in use, as it poses a risk of falling or causing an obstruction.
Stop Hoist When Chains Are Aligned If the hoist’s chains become perfectly aligned during operation, stop the hoist before proceeding further. This ensures that the load is handled with care and that the hoist’s components are not subjected to unnecessary strain.
Do Not Operate with Tangled or Irregular Chains If the hoist chains become tangled or irregular, stop operation immediately. Attempting to operate the hoist with tangled chains could result in severe damage to the hoist or cause an accident.
Avoid Colliding with Obstacles During Horizontal Movement When moving the hoist horizontally, avoid any obstacles that might cause a collision. This could damage both the hoist and the structure, leading to unsafe conditions.
Prohibit Side Pulling and Diagonal Pulling Side or diagonal pulling should never be attempted with the hoist. These movements could lead to unbalanced forces, which could damage the hoist or cause it to malfunction.
Do Not Lift Embedded or Grounded Fixed Objects The hoist should not be used to lift objects that are embedded in the ground or fixed to a surface. Lifting such objects could lead to equipment failure or damage.
Do Not Wrap Hoist Chains Around Objects The chains of the hoist should never be used to wrap around or tie objects. This improper use can damage the chain and reduce the lifting capacity.
Replace Hoist Chains Annually in High-Frequency Operations If the hoist is used in high-frequency operations or where impact forces are frequent, the hoist’s chains should be replaced at least once per year to maintain optimal performance and safety.
Do Not Weld Broken Chains If the hoist chain breaks, do not attempt to weld it and use it again. Broken chains must be replaced entirely to ensure safety and avoid further risk of failure.
Replace Entire Chains, Not Just Segments When replacing hoist chains, always replace the entire chain rather than just the broken or damaged segments. Partial replacement can lead to imbalance and weaken the hoist’s lifting capacity.
Lubricate Chains Regularly To maintain the smooth operation of the hoist, the chains should be regularly lubricated with an appropriate oil or lubricant. This helps prevent wear and tear, reducing the risk of failure.
Regular Lubrication for Gears and Bearings Ensure that the gears, bearings, and other friction components of the hoist are properly lubricated. This minimizes friction, prevents overheating, and ensures that the hoist operates efficiently.
Take Rust Prevention Measures When Storing the Hoist Long-Term If the hoist is not in use for an extended period, take appropriate rust prevention measures to protect the hoist from corrosion. Store the hoist in a dry, clean place to preserve its longevity.
Prohibit Use as a Primary Lifting Mechanism for Freight Elevators The electric hoist should never be used as the primary lifting mechanism in freight elevators. It is designed solely for lifting loads, and using it inappropriately could result in mechanical failure and safety hazards.
