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Daswell machinery could be a company that's dedicated to manufacturing and selling fine stone concrete pump and various other connected equipment concrete mixer with pump, that has qualities of product quality and economical and good service. Our machine is broadly appreciated by just about all new and old clients. Items of Daswell machinery has experienced test of market and consists of proven its top quality. While using the advancement in technologies concrete mixer, the very best sturdiness of quality and ideal and good after-sales service, Daswell has created a great brand image that is broadly reliable by clients.Henan Daswell Machinery is a professional manufacturer of mining machine for almost 30 years in China. We are dedicated to supplying our customers with best service and products, our major products include:mobile hollow concrete block making machine,Mobile Hollow Brick Making Machine,concrete mixing plant,If you are interested in our products, please contact us freely: sales@daswell.com fine stone concrete pump Here, let's talk of the empty running study of a good stone concrete pump: Start the electrical motor and check the rotating direction press the moving button, the piston push of concrete cylinder should match the S pipe dealing with action properly, the push frequency should stick to needs, along with the set cost of primary oil pressure should match the needs press the piston dealing with button, test the dealing with moving control, along with the piston reverse direction and restitution must be flexible and reliable check electric indicator light and hydraulic pressure gauge, along with the indication must be true and tthere shouldn't be fault after half an hour of free load running, every rotating part shouldn't have strange appear and violent crack phenomenon there's no oil leakage for hydraulic system, along with the oil level and oil temperature within the oil tank must be normal there's no apparent decline for level in water tank.