Troubleshooting
Problem Problem
ProblemCause Cause
CauseSolution Solution
Solution
Thepotdoesnothaveasufcient
amountofabrasive.
SeeRellingthePotwithAbrasive,page
18.
Thesystemisnotproperlysetup.SeeSettingUptheEquipment,page11.
Makesurethepotpressureisproperly
set.Thepotpressuremustbeset30
psiabovetheblastpressure.Makesure
theselectorvalveissettoBLAST.The
abrasiveballvalvemustbeopen.The
abrasivemeteringvalvemustbeatleast
1/8turnopen.
Thereisanobstructioninthe
mediacircuit.
SeeFlushingtheDiaphragmValve,page
29.
Thediaphragmvalveisnot
working.
SeeRepairingtheDiaphragmValve,
page30.
Noabrasiveowsfromthe
nozzleduringblastmode.
Thereisblockageinsidethepotor
insidetheabrasivehosebetween
thepotandthepanel.
Makesuretheballvalveisclosed,then
disconnectthecam-lockcoupler.Open
theabrasiveballvalveslightlyandmake
sureabrasiveisowingformtheabrasive
hose.Ifnot,followtheshutdown
procedure(seeShuttingDown,page19).
Thoroughlyushthepotandthemedia
hoseafterdrainingmediaandwater.
Theblastregulatorisnotadjusted
tothecorrectpressure.
Adjusttheblastregulatortothedesired
pressurewhiletheblastcontrolis
engaged.
Thetubingfromthemain
airregulatorisnotproperly
connected.
Conrmthatthetubingfromtheblast
regulatortothemainairregulatoris
intact.SeeHoseSchematic,page39.
Theblastairregulatoris
malfunctioning.
Replacetheblastairregulator(Kit
17C625).
Noblastairowwhenthe
blastcontrolisengaged.
Thewaterpumpcycles
whiletheblastcontrol
engaged.
Themainairregulatoris
malfunctioning.
SeeRepairingtheMainAirRegulator,
page28(EQ600–Kit17C131,EQ300
–Kit17C129).
Theairsupplyisinadequate.Makesuretheairinletpressuregauge
reads100-125psi.Ifthegaugedoes
notread100–125psi,checktheair
compressorforpropersetup.
TheEmergencyStopisengaged.DisengagetheEmergencyStop.
Theelectricblastcontrolcircuitis
malfunctioning.
Inspectthehosecablefordamagedor
shortedwiring.Checkthebatteryand
controlpanelconnections.Makesurethe
DCpowersourceis12V.Checkthe3A
fuseinsidethecontrolpanel,andreplace
itifnecessary.Checkthecurrentowin
thecircuit.Ifcurrentexists,replacethe
relay(EQ5179).
Noblastairowwhenthe
blastcontrolisengaged.
Thewaterpumpdoes does
doesnot not
not
cyclewhiletheblastcontrol
engaged.
334667B 23