WAUKESHA Manuale Inglese AP2 - Asco Pompe Srl

Waukesha Cherry-Burrell TroubleshootingPROBLEM POSSIBLE CAUSE SUGGESTED ACTIONNoisy operation caused byfluid.Cavitation due to high fluidviscosity.High vapor pressure fluid.High temperature.Cavitation due to Net InletPressure Available less than NetInlet Pressure Required NetInlet Pressure Required.Slow down pump, reduce temperature,change system setup.Increase NIPA - Net Inlet PressureRequired or reduce NIPR - Net InletPressure Required. WCB customerservice if necessary.Noisy operation caused bymechanical problems.Air or gas in fluid caused byleaks in the piping.Air or gas in fluid caused bydissolved gas or naturallyaerated products.Rotor to body contact due toimproper assembly of pump.Check system and fix any leaks.Minimize discharge pressure (also seeCavitation).Check clearances and adjust shimming.Rotor to body contact caused bydistortion of pump due toimproper piping installation.Pressures required higher thanthe pump is rated for.Rotor to body contact caused byworn bearings.Rotor to Rotor Contact causedby loose or not timed correctlygears.Rotor to Rotor Contact causedby sheared keys.Rotor to Rotor Contact causedby worn gear splines.Drive noise caused by geartrains, chains, couplings,bearings.Change piping installation to eliminatepiping stress and distortion on body.Reduce discharge pressure required.Rebuild with new bearings and lubricateregularly.This has caused severe damage tocomponents - rebuild with new parts.This has caused severe damage tocomponents - rebuild with new parts.This has caused severe damage tocomponents - rebuild with new parts.Repair or replace drive parts. Checkbearings for damage and replace asnecessary.Revised: February 2007 95-03015 Page 101