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1, the concrete mixer should be placed on a reliable plain place according to the construction drawing, not allowed to replace the support with the tyres. Unloaded the tires and keep it.A booth fortification rain or insulation protection should be set insulating work station, with a stent or leg tube frame, roof material should be anti-smashing.Henan Daswell Machinery Co., Ltd,is a professional manufacturer and trader specializing in the research, development and production of construction machinery for nearly 30 years. Our main products are as follows:concrete block making machine supplier,portable cement mixer,mobile block making machine,etc. We will provide you with the best product and service. 2 concrete batching plant, check the clutch ,brake, protective devices, wire rope track, pulley.These devices should be good before starting. 3, the operation personnel should have operating license, after startup, concentration;Hold position, shall not be absent without leave;Mechanical work, shall not be within the drum with grilled tool material to prevent injury. 4, While the hopper is lifting, it is forbidden to walk under the it, hopper pit need to be cleaned up, have to hang up insurance chain again and then begin cleaning. 5, Before JS500 concrete mixer is repaired and cleaned up the drum paste content mini concrete mixers, must cut off power supply, hang the "no closing" sign on the switch box, have a specialist nurse to avoid accidents.