Brake System: DC electromagnetic brakes and a powerful braking capacity, structural stability. Material cast aluminum brakes, ensure proper cooling, brake coil wrapped epoxy resin dust electric hoist, brake discs made of a non-asbestos material. Overload protection: The chain hoist overload protection by friction clutch of tonnage electric hoist, friction clutch is a vertical stroke can gourd overload protection safety device, when the load exceeds the rated load hoist, friction clutch occurs role in preventing damage to the chain hoist. (Note: This device is a safety device, not as a limit to use, set the clutch according to national standards.) Limit device: the upper and lower electronic limit switches, control hook travel to prevent overload clutch, effective improve the life of the clutch and gears. All electric chain hoists are in strict accordance with safety standards for electrical equipment installed in the body of the transformer 24V low voltage control. High-quality electronic control components and electromagnetic brakes effectively guarantee the chain hoist to achieve more than 240 times / hour frequent operation. 5, when the starter motor hums ⑴ less power and motor phase, repair or replace the contactor 6, the weight was raised to the sky, parking can no longer start ⑴ low voltage fluctuation, etc. ⑵ overload voltage recovery after start When lifting, use load shedding 7, does not stop after the start, or to limit position, still parking ⑴ AC contactor contact welding, quickly cut off the mains Remove the access or limit ⑵ malfunction, for exchanges and contacts ⑶ limit Bit is wrong inside the head, repair stopper line-tonnage electric hoist, generous heavy (certified), Lighthouse electric hoist Ltd. provided by the generosity of heavy machinery in Henan Province. Heavy Machinery Co., Ltd., Henan Province, generous (www.hnqizhongshebei.com) (www.hnqizhongshebei.com) is Zhengzhou, engineering, construction cranes leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum Limits to meet customer needs. In heavy generous leadership with the staff warmly welcome all inquiries negotiations to create a better future for heavy generous.