2. Safe operation rules and warnings(1) Check whether all power supplies are consistent with product requirements during installation.(2) The grounding wire on the motor housing must be in good contact.(3) It is forbidden to place any sundries on the motor, so as not to fly out or fall off after the machine starts, causing accidents and personal injuries.(4) Before the machine work, the operator should pay attention to the machine placement, shall not let any part of the body in the uneven or inclined state, so as to avoid accidents.(5) When checking the motor adjustment belt, each fastener and other rotating parts, the motor must be shut down when the parts are oiled and oiled.(6) If the motor has abnormal sound when starting, power off for maintenance immediately.(7) In case of sudden power failure, the power switch should be cut off immediately.(8) Do not start the machine while removing the safety cover.