User's Manual

Troubleshooting
Troubleshooting Troubleshooting
Troubleshooting
Installingandservicingthisequipmentrequires
accesstopartswhichmaycauseanelectricshock
orotherseriousinjuryiftheworkisnotperformed
properly.Donotinstallorrepairthisequipment
unlessyouaretrainedandqualied.
FollowtheFluidVoltageDischargeandGrounding
Procedure,page30beforecheckingorservicing
thesystemandwheneveryouareinstructedto
dischargethevoltage.
Toreducetheriskofaninjury,followthe
PressureReliefProcedure,page31,whenever
youareinstructedtorelievethepressure.
Voltage Voltage
Voltage
Loss Loss
Loss
Troubleshooting Troubleshooting
Troubleshooting
Normalsprayingvoltageforasystemusingthe
waterbornegunis45-55kV.Thesystemvoltageis
lowerduetosprayingcurrentdemandsandvoltage
isolationsystemlosses.
Alossofsprayingvoltagecanbecausedbya
problemwiththespraygun,uidhose,orvoltage
isolationsystem,sinceallofthesystemcomponents
areelectricallyconnectedthroughtheconductive,
waterborneuid.
Beforetroubleshootingorservicingthevoltage
isolationsystemitself,youneedtodeterminewhich
componentinthesystemismostlikelycausinga
problem.Possiblecausesincludethefollowing:
Spray Spray
Spray
Gun Gun
Gun
•Fluidleakage
•Dielectricbreakdownattheuidhoseconnection
oruidpackings
•Notenoughairpressureforthealternatorturbine
•Faultypowersupply
•Excessiveoversprayongunsurfaces
•Fluidintheairpassages
Waterborne Waterborne
Waterborne
Fluid Fluid
Fluid
Hose Hose
Hose
•Dielectricfailureofthehose(pin-holeleakinthe
PTFElayer)
•Airgapintheuidcolumnbetweenthegunandthe
isolateduidsupply,causingalowvoltagereading
ontheisolationsystemvoltagemeter.
Voltage Voltage
Voltage
Isolation Isolation
Isolation
System System
System
•Fluidleakage
•Dirtyinterior
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