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| makesurethecablesare1150insulatedHPACfromDrilltouchingMotor,anyModelsurrounding5GEB22 | ||||||||
surfaces.aleadfromthe |
| instrumenttothemotrTAlead. |
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3 | Connectthesecondleadmegohmmeter,oftheegohmmetertoacleanedgroundconnection. |
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4Apply | 500voltmegohmmetertesttothepowercircuit. | issatisfctoryandproceedtoStp7. | ||||||||
5 |
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6. | Ifthereadingisabovelow2megohms,thepowercircuitinsulationisdegraded | bad.Performthefollowing | ||||||||
| procedurestoattmpttoraisetheohmreading: |
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| a Chckthepowercablesforcracks,scuffedoropeninsulationInformation.Repair replacethecablesifdam- | |||||||||
| b. | ageisfound. |
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| ohmreading.Disconnectthe | |||
| Wat | dirt/debriscontaminationmaybeadverselyaffecting | ||||||||
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| owe | cablesfromthemotorandretestjustthe | leads.Ifthetheradingisstillbelow2megohms, | |||||
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| themotorwillhavetobe | forcleaningstatorrepair.Referto4.2.CLEANINGTHEMOTORinthis | |||||||
7 |
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| forcleaning | ns. | leadTA. |
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| oneublicationadofthemegohinstructiremovedthe |
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8 | ConnectthesecondleadofthemegohmmetermotoroneoftheRTDleads(red,white,orwhite). |
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9. | Apply | 500Vmegohmmetertesttothecircuit. |
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10. | Ifthereadingisgreaterthan2 | hms,procedtoStep11.Ifhereadingislessthan2megohms,check | ||||||||
1321.IfleaingcabletheApplyMovtheRTDreadingdamagedamagethethe500Vcablefirstseconleadismegohmmeterforleadisgreaterfound,cracked,ofthethanthenthenofmegohmmeterscuffed,the2thetestmegohmmetermeghms,RTDtootheisopendefectivcircuitprocedfrominsulationcablesconnected.theandtomotor.StepshouldRepairtoTAlead14one.orIfttreplaceofhebetotheRTDreadingusedcleanedthecable.leadsislessmotor(red,ifthandamagewhite,frame2megohms,orisgroundfoundwhite)check.while.Ifno | ||||||||||
| theRTDcableforcracked,scuffed, | ropeninsuation.Repairorreplacethecableifdamageisfound.Ifo | ||||||||
4 | cable |
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| isfound, | theRTDisdefectiv | andshouldnobeused. |
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thepeatStepsframe7through. | 13untilalltheRTD | havebeencheckedagainstthestatormotorleadsand | ||||||||
15.Remve | hemegohmmeterleadsandreturnallcomponentstooperatingcondition. |
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4.1.4.MotorMmotoruntingHardware |
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Checkthemotormountingbolts,nuts,andassciatedhardware.Ensurethehardwareisnotmissingorloose. | |
Replacemissinghardwareandtightenloosebolts. | 15 |
