Waukesha 200 series Operation, Maintenance And Parts Manual
Also see for 200 series: Operation and maintenance manual
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Contents
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18 95-03009MOTOR OVERLOAD CONDITIONSCentrifugal pump motors may overload (draw excessiveelectrical current) under certain conditions. This will tripmotor overload protection or burn out motor.Certain combinations will overload motor when operatedwith open, unrestricted discharge which results in toohigh flow rate. Additional discharge restriction may berequired to lower flow rate and lower horsepowerrequirements with . DO NOT add restriction to supplyline. (If pump was incorrectly selected, a smaller impellermay be required or a higher motor horsepower may berequired.)AMMETER TESTIf uncertain about pump selection and application, the electricianshould temporarily install an ammeter in the electrical service todetermine motor load.Operate pump under process conditions and check motor amp drawversus nameplate full load rating. If amp draw exceeds motor rating,a system change or pump change is required.If process conditions and/or liquid changes (higher viscosity, higherspecific gravity) recheck motor amp draw.Contact your authorized Waukesha Cherry-Burrell Distributor forassistance.(See PARTS ORDERING page 50 for information.)TROUBLESHOOTING MOTOR OVERLOADING |
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