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Brookeld Engineering Labs., Inc. Page 86 Manual No. M13-167

Appendix J - Fault Diagnosis and Troubleshooting

ListedaresomeofthemorecommonproblemsthatyoumayencounterwhileusingyourViscometer.

❏ Spindle Does Not Rotate

✓Makesuretheviscometerispluggedin.

✓Checkthevoltageratingonyourviscometer(115,220V);itmustmatchthewallvoltage.

✓MakesurethemotorisONandthedesiredrpmisselected.

❏ Spindle Wobbles When Rotating or Looks Bent

✓Makesurethespindleistightenedsecurelytotheviscometercoupling.

✓Checkthestraightnessofallotherspindles;replaceifbent.

✓Inspectviscometercouplingandspindlecouplingmatingareasandthreadsfordirt;cleanthreads

onspindlecouplingwitha3/56left-handtap.

✓Inspectthreadsforwear;ifthethreadsareworn,theunitneedsservice(seeAppendixM).Check

toseeifspindlesrotateeccentricallyorwobble.Thereisanallowablerunoutof1/32-inchin

eachdirection(1/16-inchtotal)whenmeasuredfromthebottomofthespindlerotatinginair.

✓Checktoseeiftheviscometercouplingappearsbent;ifso,theunitisinneedofservice(see

AppendixM:WarrantyRepairandService).

❏ Inaccurate Readings

✓Verifyspindle,speedandmodelselection.

✓VerifyspindleselectioniscorrectonDV2T.

✓ If%readingsareunder-range(lessthan10%),thedisplaywillash;changespindle and/or

speed.

✓“EEEE”onthedigitaldisplaymeanstheunitisover-range(greaterthan100%);reducespeed

and/orchangespindle.

✓ Verifytestparameters:temperature,container,volume,method.Referto:

  • “MoreSolutionstoStickyProblems”,SectionIII

  • “DV2TViscometerOperatingInstructions”,AppendixC:VariablesinViscosityMeasurements

✓Performacalibrationcheck;followtheinstructionsinAppendixE.

✓ Verifytolerancesarecalculatedcorrectly.

✓Verifythecalibrationcheckprocedureswerefollowedexactly.

Iftheunitisfoundtobeoutoftolerance,theunitmaybeinneedofservice.SeeAppendixM

fordetailsonWarrantyRepairandService.

Brookfield DV2T User Manual

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