Graco EcoQuip - Troubleshooting Examples: Checking for Leaks

Troubleshooting
Troubleshooting Troubleshooting
Troubleshooting
Examples Examples
Examples
Checking Checking
Checking
for for
for
Leaks Leaks
Leaks
1.Openthedumpvalve.Checkpotpressure
gauge,thenclosethedumpvalve.
Lookatthepressuregaugetocon󰘰rmthatall
pressurehasbeenrelievedfromthepot.
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2.Disconnectthetubingattheblastcheckvalve(L)
andatthe󰘰llportcheckvalve(ZG).
3.Makesurethepop-upisclosed.Turntheselector
valvetoWASH,thenopentheabrasiveballvalve
topressurizethepot.Setthepotpressureto145
psi(9.9Bar,0.99MPa).
4.Checkthewaterpumptocon󰘰rmthatnowater
isleakingfromtheTSL󰘰llport.
NOTE: NOTE:
NOTE:
Thepumpshouldstallafterthepot
pressurizes.Ifthepumpdoesnotstall,replace
theseals.Refertothepumpmanualforrepair
information.
5.Checkforanywaterleakingfromeithercheck
valve.Ifacheckvalveisleaking,itmustbe
repairedorreplaced.Ifthevalvesaredamaged,
thepotwillnotbeabletomaintainpressure.
Also,checkthepotpressurereliefvalve.Ifthe
valveisweepingatpotpressuresof145psior
less,itneedstobereplaced.
6.Closetheabrasiveballvalve,thenclosetheair
inletballvalve.Engagetheblastcontrolswitch
torelievepressureintheblastcircuit.Con󰘰rm
thatthesupplyairpressuregaugereads0psi.
7.Disconnectthequickcouplerandcon󰘰rmthatthe
ballvalveisnotleaking.Replacetheabrasive
ballvalveifitisleaking.
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