Panasonic EY4640 Operating Instructions Manual

Also see for EY4640: Operating instructions Operating instructions Operating instrctions Service manual

Contents

- 8 -Further safety instructions forall operationsKickback and Related WarningsKickback is a sudden reaction to apinched or snagged rotating wheel,backing pad, brush or any other acces-sory. Pinching or snagging causes rapidstalling of the rotating accessory whichin turn causes the uncontrolled powertool to be forced in the direction oppositeof the accessory’s rotation at the point ofthe binding.For example, if an abrasive wheel issnagged or pinched by the workpiece,the edge of the wheel that is enteringinto the pinch point can dig into thesurface of the material causing thewheel to climb out or kick out. Thewheel may either jump toward or awayfrom the operator, depending on direc-tion of the wheel’s movement at thepoint of pinching. Abrasive wheels mayalso break under these conditions.Kickback is the result of power toolmisuse and/or incorrect operatingprocedures or conditions and can beavoided by taking proper precautionsas given below.1) Maintain a firm grip on the powertool and position your body andarm to allow you to resist kickbackforces. Always use auxiliary handle,if provided, for maximum controlover kickback or torque reactionduring start-up. The operator cancontrol torque reactions or kickbackforces, if proper precautions aretaken.2) Never place your hand near therotating accessory. Accessory maykickback over your hand.3) Do not position your body in thearea where power tool will moveif kickback occurs. Kickback willpropel the tool in direction oppositeto the wheel’s movement at thepoint of snagging.4) Use special care when workingcorners, sharp edges etc. Avoidbouncing and snagging the ac-cessory. Corners, sharp edges orbouncing have a tendency to snagthe rotating accessory and causeloss of control or kickback.5) Do not attach a saw chain wood-carving blade or toothed sawblade. Such blades create frequentkickback and loss of control.Additional safety instructions forgrinding and cutting-off opera-tionsSafety warnings specific for Grindingand Abrasive Cutting-off operations:1) Use only wheel types that arerecommended for your powertool and the specific guard de-signed for the selected wheel.Wheels for which the power toolwas not designed cannot be ade-quately guarded and are unsafe.2) The guard must be securely at-tached to the power tool and po-sitioned for maximum safety, sothe least amount of wheel is ex-posed towards the operator. Theguard helps to protect operatorfrom broken wheel fragments andaccidental contact with wheel.3) Wheels must be used only for rec-ommended applications. For exam-ple: do not grind with the side ofcut-off wheel. Abrasive cut-off wheelsare intended for peripheral grinding,side forces applied to these wheelsmay cause them to shatter.4) Always use undamaged wheelflanges that are of correct size andshape for your selected wheel.Proper wheel flanges support thewheel thus reducing the possibility ofwheel breakage. Flanges for cut-offwheels may be different from grind-ing wheel flanges.5) Do not use worn down wheelsfrom larger power tools. Wheelintended for larger power tool is notsuitable for the higher speed of asmaller tool and may burst.