User's Manual

Troubleshooting
Troubleshooting Troubleshooting
Troubleshooting
NOTE: NOTE:
NOTE:
Checkallpossibleremediesbeforedisassemblingthepump.
Problem Problem
Problem
Cause Cause
Cause
Solution Solution
Solution
Inletoroutletpipediameterstoo
small.
Increasepipesizeoraddpulsation
dampeners.
Highpumpspeed.
Reducespeedofpump.
Inletoroutletconnectionsnot
properlyanchored.
Securepiping.
Hammeringinpiping.
HighInletoroutletpressures.Addpulsationdampeners.
Lowlubricantlevel.Addhoselubetotheproperlevel.
Improperlubricant.
UseonlyGracohoselubeforlow
temperatureoperation.
Pumpeduidtemperaturetoo
high.
ConsultyourGracodistributorfor
maximumtemperaturelimitsof
yourpump.
Highpumptemperature.
Highpumpspeed/pump
undersized.
Reducethepumpspeedorswitch
toalargerpump.
Blockedoutletline.
Clearanyobstructionsintheoutlet
line.
Narrowedpipediameterdueto
settledsolids.
Determineifsolidshavesettled
inpipingandush/removeas
required.
Highoutletpressure.
Viscosityorspecicgravityof
pumpeduidtoohigh.
ConsultyourGracodistributorfor
suitableoperatingconditionsfor
yourpump.
Failedhose.
Checktoseeifthehosehasfailed.
Ifso,replacewithanewhoseand
lubricant.
Blockedinletline.
Clearanyobstructionsintheinlet
line.
Inletlinetoolongortoosmall.Trytolocatethepumpasnear
totheuidsourceaspossible.
Oversizetheinletpipingwhen
possible.
Lowinletpressure.
Viscosityorspecicgravityof
pumpeduidtoohigh.
ConsultyourGracodistributorfor
suitableoperatingconditionsfor
yourpump.
Lowow.
Failedhose.
Checktoseeifthehosehasfailed.
Ifso,replacewithanewhoseand
lubricant.
6 3A1939G