Transcription of Polyphase AC Induction Motor TROUBLESHOOTING GUIDE
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Polyphase AC Induction Motor TROUBLESHOOTING GUIDE
Properly installed and maintained Lincoln Electricpolyphase AC Induction motors operated within thenameplate ratings will run trouble-free for many and premature failures often indicate inputpower system troubles, poor or deteriorating mechanicalinstallations, or malfunctions in the driven , Motor TROUBLESHOOTING involves the entiresystem, not just the AC Induction MotorTROUBLESHOOTING GUIDED5T Application DataTroubleshooting GuideWARNINGA llow only qualified personnel to perform troubleshootingand maintenance of motors. Be sure such techniciansobserve standard safety precautions including those in thisTroubleshooting GUIDE . 2 Steps for EffectiveTroubleshooting Determine answers for the following questions:a. What are the troubles and when did theyfirst occur?b. If new, did the installation ever run properly?How long?c. If an established installation, is the trouble new or has it been occurring for years?What changes, even if minor, occurred inin the operation or maintenance of theequipment before the trouble started?
Polyphase AC Induction Motor TROUBLESHOOTING GUIDE D 5T Application Data Troubleshooting Guide WARNING Allow only qualified personnel to perform troubleshooting ... the single phase condition. Cure 3c: Disconnect the motor from the driven load. If the motor shaft turns freely, the trouble is in the load. Replace the motor or
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