
Brookeld Engineering Labs., Inc. Page 89 Manual No. M13-167-B0614
Appendix L - Fault Diagnosis and Troubleshooting
Listedaresomeofthemorecommonproblemsthatyoumayencounterwhileusingyour
Viscometer.
❏ Spindle Does Not Rotate
✓Makesuretheviscometerispluggedin.
✓Checkthevoltageratingonyourviscometer(115,220V);itmustmatchthewallvoltage.
✓MakesurethemotorisONandthedesiredrpmisselected.
❏ Spindle Wobbles When Rotating or Looks Bent
✓Makesurethespindleistightenedsecurelytotheviscometercoupling.
✓Checkthestraightnessofallotherspindles;replaceifbent.
✓Inspectviscometercouplingandspindlecouplingmatingareasandthreadsfordirt;
cleanthreadsonspindlecouplingwitha3/56left-handtap.
✓Inspectthreadsforwear;ifthethreadsareworn,theunitneedsservice(seeAppendix
O).Checktoseeifspindlesrotateeccentricallyorwobble.Thereisanallowablerunout
of1/32-inchineachdirection(1/16-inchtotal)whenmeasuredfromthebottomofthe
spindle rotating in air.
✓Checktoseeiftheviscometercouplingappearsbent;ifso,theunitisinneedofservice
(seeAppendixO:WarrantyRepairandService).
❏ Inaccurate Readings
✓Verifyspindle,speedandmodelselection.
✓VerifyspindleselectioniscorrectonDV2T.
✓If%readingsareunder-range(lessthan10%),thedisplaywillash;changespindle
and/or speed.
✓“EEEE”onthedigitaldisplaymeanstheunitisover-range(greaterthan100%);reduce
speedand/orchangespindle.
✓ Verifytestparameters:temperature,container,volume,method.Referto:
• “MoreSolutionstoStickyProblems”,SectionIII
• “DV2T Viscometer Operating Instructions”, Appendix C: Variables in Viscosity
Measurements
✓Performacalibrationcheck;followtheinstructionsinAppendixF.
✓Verifytolerancesarecalculatedcorrectly.
✓Verifythecalibrationcheckprocedureswerefollowedexactly.
Iftheunitisfoundtobeoutoftolerance,theunitmaybeinneedofservice.See
AppendixOfordetailsonWarrantyRepairandService.
It's good information