Panasonic VF0 Series 400V class Instruction Manual

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82LocationInspectionitem Check item Checkfrequency Check method Test criteria InstrumentOperationchecks(1) Check output linevoltage balancebetween phasesduring inverteroperation withoutapplication.(2) Check theprotection anddisplay circuitswith thesequenceprotectionoperation test.(1) Measure voltagebetween outputterminals.(2) Simulate ashort-circuitbetween theinverter warningoutputs.(1) Line outputbalance is 4Vmax.(2) The sequenceprotection circuitmust functioncorrectly.Rectifier typevoltmeterAll parts(1) Any strangesmells ordiscoloration?(2) Is there heavyrusting?(1), (2)Visual inspectionand smell(1), (2) NormalControl and protection circuitsCapacitorAny trace of liquidleaks ordeformation? Visual inspection NormalCooling systemCoolingfan(1) Is there anyabnormalvibration orabnormal noise?(2) Are any of theconnectionsloose? (1) Audible check(2) Tightenfastenings(1), (2) NormalDisplayunitAre any LEDs notworking? Visual inspection NormalDisplayMeter Are all readingscorrect? Check indicatedvalueMust be withinstandard value andcontrol value.VoltmeterAmmeterMotorGeneral(1) Is there anyabnormalvibration orabnormal noise?(2) Strange smells?(1), (2)Visual, audible andsmell test(1), (2) Normal