Graco SaniForce 4150 - Ordering Information

Troubleshooting
Troubleshooting Troubleshooting
Troubleshooting
•FollowthePressureReliefProcedure,page9,
beforecheckingorservicingtheequipment.
•Checkallpossibleproblemsandcausesbefore
disassembly.
Problem Problem
Problem
Cause Cause
Cause
Solution Solution
Solution
Pumpcyclesatstallor
failstoholdpressureat
stall.
Wornchecksorseats.Replace.
Airvalveisstuckordirty.Disassembleandcleanairvalve.
Use󰘰lteredair.
Checkballisseverelywornand
wedgedinseatormanifold.
Replaceballandseatcomponent.
Checkvalveballisseverelywedged
intoseatduetooverpressurization.
Follow
PressureReliefProcedure,page9.
Disassembleballcheckassembly
andinspectfordamage.
Cloggeddispensingvalve.
Follow
PressureReliefProcedure,page9.
Clearvalve.
Pumpwillnotcycle,or
cyclesonceandstops.
Leakdetectorhasactivatedashut-
downsolenoid.
Investigatefailureandresetleak
detector.
Cloggedsuctionline.
Inspect;clear.
Stickyorleakingcheckballsor󰘱ap
valves.
Cleanorreplace.
Flapvalvesinstalledupside-down.
Installthe󰘱appervalvewiththetext
sidefacingtheseat.
Ruptureddiaphragm.
Replace.Seestandardor
overmoldeddiaphragmrepair
procedure.
Reducedpump
performance.
Restrictedexhaust.Removerestriction.
Loosesuctionline.Tighten.
Ruptureddiaphragm.
Replace.Seestandardor
overmoldeddiaphragmrepair
procedure.
Airbubblesin󰘱uid.
Looseinletmanifold,damagedseal
betweenmanifoldand󰘱uidcover,
damagedgaskets.
Tightenmanifoldclampsorreplace
gasketsorseatingcomponents.
Loosesanitaryclamp.Tightenclamp.
Damagedorworngasket.Replacegasket.
Leakininletoroutlet
sanitary󰘰tting.
Misalignmentofinlet/outlet󰘱uidline
orpipe.
Use󰘱exible󰘱uidlinesatpumpinlet
andoutlet.
3A6782F
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