1 explosion-proof electric hoist, explosion-proof electric hoist according to GB3836.1-2000 "explosive gas atmospheres explosion-proof electrical equipment Part 1: General requirements" and GB3836.2-2000 "explosive gas atmospheres explosion-proof electrical equipment Part 2: flameproof provisions "d" "of, electrical, electronics flameproof, explosion-proof level ExdⅡCT4 hoist run institutions sparkproof process. 2, the whole in line with JB / T10222-2001 "explosion-proof electric hoist" requirement, proof grade were ExdⅡBT4, ExdⅡCT4.3, explosion-proof electric hoist can be fixed with a workshop in conjunction with the suspension rail alone, can also be hung with LXB explosion-proof electric single-beam, LB-proof electric single girder, double girder supporting the use of explosion-proof hoist. 4, explosion-proof electric hoist from the weight of 1t-32t, the working environment temperature -25 ℃ ~ 40 ℃. 5, the electric hoist suitable for the plant with explosion-proof level not higher than B or C, ignition temperature groups of not less than T4 (135 ℃) for explosive gas atmospheres flammable gases group, steam and air formed. Troubleshooting 1, after the start, the motor does not turn electric hoist car bumpers, can not lift heavy objects ⑴ excessive overload, overload is not allowed to use ⑵ voltage lower than the rated voltage of more than 10%, and so the voltage returns to normal ⑶ electrical fault 0.8 tons electric hoist, broken wire or bad, after maintenance of electrical and wiring ⑷ brake wheel and cover rust killed hoist brake drum tied, remove the brake drum and cleaning corroded surfaces ⑸ motor sweep chamber, according to the fault number 9 ⑹ wire meticulous process, the replacement of lead 0.8 tons electric hoist, generous heavy (certified), Jianyang hoist Ltd provided by generous 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.