Panasonic EY7202 Operating Instructions Manual

Also see for EY7202 - 12V IMPACT DRIVER: Operating instructions

- 8 -The driver is preset to “F” full power(digital clutch is off) and the one-shotimpact function is off when shippedfrom the manufacture.CAUTION:When the clutch is set to 1 or 2 stage,the impact power mode is automaticallyset at “Soft” impact mode regardless ofthe impact power mode select displaysetting.When the clutch is set to 3 or 4 stage,the impact power mode is automaticallyset at “Medium” impact mode even inthe “Hard” impact mode display setting.Clutch setting andoperating impact forceImpactPower ModeDisplaySoft Medium Hard HSoft Medium Medium MSoft Soft Soft SImportant remarks whenusing the digital clutch andone shot impact functionsThe digital clutch setting could be usedonly as a guideline. The suitable settingwill vary depending on the hardness ofthe material, the force being applied to thetool, and the type of screw.Uneven material hardness could result inless-tightening or over-tightening depend-ing on the position on the material.If the battery pack capacity is low, thedriver might not fully tighten the screws.UsageWhen driving screws into wood, use thescrews of less than 90 mm long and avoidknots of wood materials.Be sure to set the impact power modeand digital clutch to match the materialand screws being used.When selecting the digital clutch settings,start from low to high stage while check-ing the setting (on a scrap piece of thematerial) to determine the best setting.Too high setting could result in over-tight-ening of the screws.Depress the trigger switch fully when usingthe digital clutch and/or one-shot impactfunction during one period of operation.Using low speed by trigger switch couldresult in a discrepancy in work results.When using the digital clutch, depress thetrigger switch fully until the digital clutchoperates. Do not release the switch untilthe rotation stops. Releasing the switchto stop rotation before finishing tighten-ing a screw could result in not being fullytightened. (If this happens, start from thebeginning of fastening.)Applications not recommend-ed for these functionsTightening screws into easily breakablematerials, such as thin plastics.Tightening screws into lightweight steelsheet which thickness is 0.8 mm or less.Tightening TEKS screws into soft surfacematerials, such as interior finishing mate-rials.Reason: The impact function is amechanical sideway impact. The tight-ening torque increases instantly step bystep when the hammer impacts. There-fore, fastening torque of impact driver isnot generally increased as a drill driver.(The accuracy also varies depending onthe material.)Tightening timeNumber of impactsImpact torque curveTightening torque (load)Drill driver torque increase.Setting valueImpact torque curveTo control the tightening torque for screwsand bolts during factory manufacturingand assembly.Reason: The digital clutch uses a sen-sor and microcomputer to deduce the loadfrom the number of motor rotation betweenimpacts and then stop the rotation whenthe load reaches to the set clutch load. Todeduce this load requires at least 4 or 5impacts, This is not suitable for materialswhich requires a low tightening load, asimpact may not occur 4 or 5 times.