Alfa Laval ALS - Troubleshooting

4Operation
Studytheinstructionscarefullyandpayspecialattentiontowarnings!Always Always
Always
checktheAgitatorbeforeoperation(see
chapter3.3Pre-usecheck).
AlfaLavalrecommendasoftstarterorafrequencyconverterfortheAgitatortoreducetheloadontankandAgitator.For
operationinstructionsfromsuppliers(seechapter8Appendix).
4.2Troubleshooting
Pr Pr
Pr
oblem oblem
oblem
Notstarting
Cause/r Cause/r
Cause/r
esult esult
esult
Remedy Remedy
Remedy
-DefectDismantledriveunit,checkforcorrectrotation.Replacedriveunit
-Faultatpowersupply
Checkpowersupplyconnection
Checkvoltageandfrequencycorrespondwithnameplate
Driveunit
Checkfrequencyconverteradjustmentcorrespondtonameplate
Agitator
-ObstructedCheckAgitatorcanrotatefreelywithoutstrikinganything
BearingframeEnsurethatretainerbolthasbeenremoved
Vibrations
-Damaged
ContactAlfaLaval
-Unbalancedimpeller
Cleanimpellerdevice
Impellerdevice
-DamagetoshaftsealReplacesealing
Shaft
-Damaged
ContactAlfaLaval
-Deviationfromnormaloperation
Operationcircumstancesmustequaltothoseitwasdesignedfor
1)
Other
-Increased/decreasedtemperature
Unuasualnoise
-BearinggapReplacebearingsandallgasketsinbearingframeimmediately Bearingframe
-WearordamagedbearingsReplacebearingsandallgasketsinbearingframe
-DefectReplacedriveunit
-BearinggapRenovateorchangethedriveunitimmediately
-Increased/decreasedpowerSwitchofpowersupply
Driveunit
-NogreaseReplacedriveunit
-WearsealingReplacesealing
-Sealarenotflushed
Replacesealingandensurethatthesealneverrundry
Sealing
-SealsurfacessticktogetherSeparatesurfacescarefullyandcleanthem-ensurethatsealsare
sufficientcleanedbeforestillstand
-Deviationfromnormaloperation
Operationcircumstancesmustbeequaltothoseitwasdesignedfor
1)
Other
-CircuitoverloadOperationcircumstancesmustbeequaltothoseitwasdesignedfor
1)
Leakage
Gear-Oilleakage
Renovateorchangethegearimmediately
Sealing-CIPfluidorother
Replacesealing
Continuouslybreakdown
-DefectReplacemotor Driveunit
-ToohighfrequencyRegulatefrequencydown
Other
-Deviationfromnormaloperation
Operationcircumstancesmustbeequaltothoseitwasdesignedfor
1)
Performance
Driveunit-Wrongfrequency
Checkfrequencyconnection
Agitator-ReversedirectionInspecttheAgitatorcarefully
Other
-Deviationfromnormaloperation
Operationcircumstancesmustbeequaltothoseitwasdesignedfor
1)
1)
Seechapter2.3Intendeduse.
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