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ModelPX1V2016OperationalManual–ForHazardousEnvironments
Precision®ExtractionSolutions
©2015PX2Holdings,LLC.Allrightsreserved.
CHAPTER3
PressureTesting
PressureTesting/PreparingtheEquipmenttoOperate
YourPX1unitcomesfactorytestedandinspectedforsustainedpressureholding
capabilities.However,shippingandmovingoftheunitmaycreatepressureleaks,aswell
drasticchangeintemperature.Itistheoperator'sresponsibilitytocheckforpressurefor
leakspriortooperation.
Tocheckthesystemforleaks,pleaseattachallthecomponentsandhose
assembliesperthedrawinginthismanual.Ifpressuretestingtheentiresystemnew,the
solventvesselistobeincluded.Iftestingthesystemafterthesolventtankhasbeenfilled,
pleasekeepallvalvesonthesolventvesselCLOSED.AllothervalvesshouldremainOPEN.
Attacha3/8"JIChosetothecollectionvessel,andwithallthevalvesopenonthe
system,bringthesystempressureto150PSIusingcompressedairviaanaircompressor.
EnsuretheventdownnipplesonthegaugesareOPENEDpriortoperformingapressure
test.Notetheactualreadingsofthepressuregaugesbytakingapictureforlater
comparison.Allowthesystemtositunder150PSIforatleast1hourifthisisasecondary
test(betweenruns)or24hoursifitisaprimarytest(yourfirstpressuretest).Ifany
differenceinpressureisnoticed,thereisaleak,andtheunitisunsafetooperate.
Leakscanbeidentifiedbyfillingaspraybottlewithsoapywaterandsprayingthe
suspectedareawheretheunitisleaking.Theleakcanbeidentifiedbythepresenceof
bubbles.Themostcommonareastheleakarethevalveseats(whichcouldneedtobere-
taped),thesightglasses(whichmayneedtobetightened).Before
adjusting/tightening/re-tapinganypiecesontheunit,thesystemmustbeventeddown
to0PSI.
Oncetheunithaspassedapressuretest,youarenowreadytocharge/fillthe
solventvessel.
Youwillneedtodoseveralotherproceduresinordertopreparethemachineto
run.First,inspectitsoverallcleanliness.Ingeneral,Precisionkeepsourequipmentasclean
aspossiblepostproduction,however,shippingandhandlingoftheequipmentcancause
contamination.Becauseyouaremakingafoodgradeproduct,itisyourresponsibilityto
ensureallsurfacesusedarecleanandsanitaryatalltimes.