... 600 mesh 0.018mm4unique grid design, screen used for a long time for network speed, screen up to 7 layers ... with electrical protection device.2, the machine is running early, check every day at least once a ... 4, the motor should guarantee good lubrication, each running about two weeks to add lithium grease (ZL-3 ... installed on the oil cup.5, the machine running total of 1500 hours, check the bearings, if ...