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When normal operation, it is forbidden to change the direction of the operation to prevent the loss of composite film. In normal operation, the air compressor main air path can not have the phenomenon of leakage, to ensure adequate air flow and wind pressure, in order to extend the use of diamond composite film. The first time of the new composite piece of the first use of the low speed running in half an hour, and then gradually normal use. To reduce the axial pressure and rotate speed, to prevent the bit fault in the geological environment. In normal drilling operations, if you want to change a bit, to strictly check the hole in the hole is a debris, must ensure that the hole can be used to clean the new composite piece of.