Graco EcoQuip - Troubleshooting; Pot Pressurization Issues

Troubleshooting
Troubleshooting Troubleshooting
Troubleshooting
Problem Problem
Problem
Cause Cause
Cause
Solution Solution
Solution
Theairsupplyisinadequate.Makesuretheairinletpressuregaugereads
100-125psi(6.8–8.6bar,0.68–0.86MPa).If
thegaugedoesnotread100–125psicheck
theaircompressorforpropersetup.
TheEmergencyStopis
engaged.
DisengagetheEmergencyStop.
Inadequatewatersupplyto
thepump.
Makesurethewatertankisfullandtheinlet
ballvalveisopen.
Thepotpressureregulatoris
settoolow.
Increasethesettingonpotpressureregulator.
Thepotpop-upcannotseal
properly.
Cleanallabrasivefromthepop-upandgasket.
Makesurethepop-upspringisliftingandthe
pop-upis󰘰rmlyagainsttheseal.Ifcleaning
doesnotsolveissue,replacepop-upgasket.
TheAuto-Ventvalvewillnot
seal.
SeeCleaningtheAuto-VentValve,page32.
Thepotpressurereliefvalve
isdischargingwater.
Decreasethepotpressureto145psi(10.3
bar,1.03MPa)orless.Ifthevalveweepsor
relievesat145psi,replacevalve.
Thepotorpumpisleaking
pressure.
Makesuretheabrasiveballvalveandthe
dumpvalveareclosed.Ifpotpressure
gaugestillcreepsdownward.See
CheckingforLeaks,page27.
Thepotwillnotproperly
pressurize.
Thepotpressureregulatoris
malfunctioning.
Replacethepotpressureregulatorassembly.
Theairsupplyisinadequate.Makesuretheairinletpressuregaugereads
100-125psi(6.8–8.6bar,0.68–0.86MPa).If
thegaugedoesnotread100–125psi,check
theaircompressorforpropersetup.
Theblastairregulatoris
malfunctioning.
Replacetheblastairregulator.
Theblastpressurewillnot
reachthedesiredsetpoint.
Themainairregulatoris
malfunctioning.
SeeRepairingtheMainAirRegulator,page29.
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