Service and repairsItem no. 10206004, Revision 0338 ( 40 )HF spindle becomes loud Cause TroubleshootingTool unsuitableq Only use balanced tools.(Also see the "Tools for high speed cutting [} 32]" section.)q Check the tool for damage.q Replace damaged tool.HF spindle is notclamped truly or is dis-tortedq Only use spindle holders from the original accessories orholders produced according to the tolerances specified byNakanishi Jaeger GmbH.HF spindle clampedtoo tightlyq Only tighten the clamping screws of the spindle holdermanually.q Do not use technical aids to clamp the HF spindle.Bearings damaged q Contact Nakanishi Jaeger GmbH service.Sensor does not send anysignalsCause TroubleshootingNo connection to sen-sor q Check the lines and connections.HF spindle vibrates/oscillatesCause TroubleshootingTool unsuitableq Only use balanced tools.(Also see the "Tools for high speed cutting [} 32]" section.)q Check whether the tool is suitable for the application.q Check the tool for damage.q Replace damaged tool.Contaminationq Remove all contamination between the tool taper and shaftof the HF spindle.(Observe all points in the “Tool change [} 30]” and “Mainte-nance [} 33]” sections.)Frequency converterincorrectly setq Compare the values for the HF spindle with the set values onthe frequency converter.Machining too heavy q Reduce the machining load intensity.Mounting screws areloose q Tighten the screws securely.HF spindle damaged q Contact Nakanishi Jaeger GmbH service.If the error is not rectified after checking all of the points, contact the relevantservice partner.Ü Request the accompanying note for the repair from the service partner.Ü Check the manual of the machine.Ü Contact the manufacturer of the machine.