Air hoists are workhorses in industrial settings, prized for their durability, safety in hazardous environments, and reliable performance. But like any heavy equipment, their efficiency and safety depend entirely on proper operation. Whether you're a seasoned operator or new to using pneumatic lifting tools, following these guidelines will help you avoid accidents, extend the hoist's lifespan, and ensure smooth daily operations.
Before powering up the air hoist, a thorough inspection is non-negotiable. Skipping these steps can lead to equipment failure or serious injury. Here’s what to check:
Air Supply: Ensure the compressed air source delivers the correct pressure (typically 6–10 bar, as specified in the hoist’s manual). Use a pressure gauge to verify—too low, and the hoist may struggle to lift loads; too high, and internal components could wear prematurely. Also, check that the air hose is free of kinks, cracks, or leaks. Replace damaged hoses immediately, as leaks reduce efficiency and can cause sudden pressure drops.
Chain and Hooks: Examine the lifting chain for signs of wear, such as stretched links, cracks, or corrosion. A good rule of thumb: if any link’s thickness is reduced by 10% or more, replace the chain. Inspect the hooks too—they should not be bent, twisted, or have cracks. Ensure the safety latch on the hook closes properly to prevent loads from slipping.
Trolley and Track: If using a trolley-mounted air hoist, check that the trolley moves smoothly along the track. Look for loose bolts, worn wheels, or debris that could block movement. Grease the trolley’s axles if needed—stiff movement can cause uneven loading and strain the hoist.
Controls: Test the control lever or pendant before lifting. The hoist should respond immediately to commands: lifting, lowering, and (if applicable) trolley movement should be smooth with no delays. If the controls feel sticky or unresponsive, do not use the hoist—have a technician inspect it.
Once pre-operation checks are complete, follow these steps for safe lifting:
Secure the Load: Position the hoist directly above the load to avoid swinging. Attach the hook to a stable, central point on the load—never use a damaged or unrated lifting point. Ensure the load is balanced; uneven loads can cause the hoist to tip or the chain to twist.
Test Lift: Lift the load 10–15 cm off the ground and pause. Check that the chain is straight (no twists), the hook is secure, and the load is stable. This test prevents accidents if the load shifts once fully lifted.
Lift and Move: Use smooth, steady movements with the control lever. Avoid jerky starts or stops, which can strain the chain and trolley. If moving the load horizontally, move the trolley slowly to prevent swinging—use a tagline (a rope attached to the load) to control sway if needed.
Lower the Load: Lower the load gradually, keeping a safe distance from the area. Never lower a load onto a person, and ensure the landing surface is flat and stable. Once the load is on the ground, release the control lever and disconnect the hook.
Shut Down Properly: After use, turn off the air supply and bleed any remaining pressure from the hoist. Store the chain neatly to prevent kinks, and park the trolley in a designated area away from walkways or work zones.
Never Overload: Always check the hoist’s rated capacity (marked on the housing) and never exceed it. Overloading is the leading cause of chain failure and accidents.
Keep Clear: Stand to the side of the hoist (not directly under the load) during operation. Ensure bystanders are at least 3 meters away from the lifting area.
No Modifications: Never alter the hoist’s components (e.g., shortening the chain, removing safety latches) or use it for purposes it’s not designed for (e.g., pulling loads horizontally).
Training Required: Only trained, authorized personnel should operate an air hoist. Training should cover pre-operation checks, emergency procedures, and load limits.
Emergency Stop: Know where the emergency air shut-off valve is located. If a problem occurs (e.g., chain jam, load shift), shut off the air supply immediately to stop the hoist.
Maintenance Tips for Longevity
Daily: Clean debris from the chain and trolley. Check air hoses for leaks.
Weekly: Lubricate the chain with a high-quality, water-resistant lubricant. Inspect all moving parts for wear.
Monthly: Test the brake system by lifting a light load and checking that it holds securely when the control lever is released.
Annually: Have a certified technician perform a full inspection, including load testing and air motor servicing.
As a leading crane manufacturer, our air hoists are designed with safety and durability in mind. We build each unit to withstand tough industrial environments, with features like corrosion-resistant chains, heavy-duty air motors, and ergonomic controls. Our team provides training materials and support to help your operators use the hoist safely and efficiently.
By following these operating guides, you'll ensure your air hoist performs reliably for years, keeping your workplace safe and productive. For more tips or to learn about our air hoist models, contact our team today.
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