[Guidance] Instructions for Installing Electric Hoists 2025-06-23
The “Installation Plan for Electric Chain Hoist” specifies preliminary preparation with licensed personnel and technical documents, verifies bearing capacity and safe operating space, and outlines suspension point installation, smooth main-body hoisting, chain management, and proper electrical wiring. Safety devices include an upper limiter that powers off 200 mm before the limit position and an optional load limiter calibrated to 110 % rated load. Commissioning requires no-load and load tests—static load at 1.25 × rated load for 10 minutes and dynamic load at 1.1 × rated load for ten cycles—followed by documented acceptance. Daily inspection checks chain condition, hook, limiters, emergency-stop, track, structure, and grounding. Monthly, quarterly, and annual maintenance procedures emphasize chain lubrication, visual checks, and professional comprehensive inspections. The accident emergency plan addresses chain breaks, brake failure, and electric shock, and strictly warns: “Unlicensed
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