Braking is not reliable, fell over a distance requirements ⑴ due to wear and the brake ring electric Hulusi or other reasons, the spring pressure is reduced toyo electric hoist, spring brake pressure adjustment ring ⑵ poor contact with the rear end cap cone, remove ⑶ braking surface grinding with oil, remove the cleaning ⑷ brake ring loose, replace the brake pressure Central ⑸ spring fatigue, replace the spring ⑹ couplings ran ineffective or stuck, check the coupling portion ⑺ conical rotor channeling excessive movement, adjust as required 5, motor hums ⑴ less power and motor phase, repair or replace the contactor 6, the weight was raised to the sky to start, stop after no longer starts ⑴ low voltage fluctuations, etc. When the voltage is restored after the start ⑵ overload lifting, load shedding a 7, you can not stop after the start, or to limit position, still parking ⑴ AC contactor contact welding abus hoist, quickly cut off the mains or more ⑵ remove the access restriction Bit malfunction, for exchanges and contacts with the stopper inside the head ⑶ wrong, electric line repair stopper Hulusi Carey electric hoist, good reputation by heavy machinery Co., Ltd., Henan Province, generous. Heavy Machinery Co., Ltd., Henan Province, generous (www.hnqizhongshebei.com) (www.hnqizhongshebei.com) strong, credible, in Zhengzhou, Henan engineering, construction crane industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving generous innovative ideas will lead into the brilliant heavy and you work for a better future!