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"DUO" UNIT; INSTRUCTIONS USE AND MAINTENANCE HANDBOOK Summary TROUBLE SHOOTING PROBLEM PROBABLE CAUSE Motor fails to rotate and no voltage at Burnt out fuse in power supply hose exit unit Power supply box failure Supply line failure Motor fails to rotate but there is voltage Motor is stuck at hose exit Handpiece is stuck SUGGESTED SOLUTION Change fuse Seek technical assistance Seek technical assistance Seek technical assistance Remove, clean and grease handpiece. Send handpiece to manufacturer Motor rotates, but speed cannot be Foot control potentiometer Change potentiometer regulated failure Seek technical assistance Stabilized power supply unit Seek technical assistance failure Motor run is intermittent Supply cable failure Change supply cable Damaged bearings Seek technical assistance Motor fails to provide sufficient power Power supply unit failure / Seek technical assistance Motor failure The motor heats up too much Inadequate cooling air Seek technical assistance Only the motor rotates but not the bur Handpiece is fitted incorrectly Remove handpiece and re-fit correctly Handpiece is broken-down Send handpiece to manufacturer Connection joint damaged Seek technical assistance Handpiece rotates on its attachment Handpiece is stuck Remove, clean and grease handpiece. Send handpiece to manufacturer Handpiece cannot be locked on the Handpiece damaged Change handpiece connection stem Latch damaged Seek technical assistance Water leakage from handpiece Worn or damaged seal rings Change the rings or seek technical assistance Water leakage from pipe connection Worn or damaged seal rings Change the rings or seek technical assistance IMPORTANT WE PRESCRIBE TO: STOP WORKING IMMEDIATELY IN THE EVENT OF UNUSUAL NOISE, STRONG VIBRATION OR IF BUR IS NOT KEPT FIRMLY IN POSITION. Page 67
