Graco Reactor 3 - Typical Installation Without; Circulation; Fluid Manifold to Drum

ImportantIsocyanateInformation
Material Material
Material
Self Self
Self
- -
-
Ignition Ignition
Ignition
Somematerialsmaybecomeself-igniting
ifappliedtoothick.Readmaterial
manufacturer’swarningsandSafetyData
Sheets(SDSs).
Keep Keep
Keep
Components Components
Components
A A
A
and and
and
B B
B
Separate Separate
Separate
Cross-contaminationcanresultincured
materialinuidlineswhichcouldcause
seriousinjuryordamagetoequipment.To
preventcross-contamination:
•Never Never
Never
interchangecomponentAand
componentBwettedparts.
•Neverusesolventononesideifithasbeen
contaminatedfromtheotherside.
Changing Changing
Changing
Materials Materials
Materials
NOTICE NOTICE
NOTICE
Changingthematerialtypesusedinyour
equipmentrequiresspecialattentiontoavoid
equipmentdamageanddowntime.
•Whenchangingmaterials,ushthe
equipmentmultipletimestoensureitis
thoroughlyclean.
•Alwayscleantheuidinletstrainersafter
ushing.
•Checkwithyourmaterialmanufacturerfor
chemicalcompatibility.
•Whenchangingbetweenepoxiesand
urethanesorpolyureas,disassembleand
cleanalluidcomponentsandchange
hoses.Epoxiesoftenhaveaminesonthe
B(hardener)side.Polyureasoftenhave
aminesontheB(resin)side.
Moisture Moisture
Moisture
Sensitivity Sensitivity
Sensitivity
of of
of
Isocyanates Isocyanates
Isocyanates
Exposuretomoisture(suchashumidity)will
causeISOtopartiallycure,formingsmall,hard,
abrasivecrystalsthatbecomesuspendedinthe
uid.Eventuallyalmwillformonthesurface
andtheISOwillbegintogel,increasingin
viscosity.
NOTICE NOTICE
NOTICE
PartiallycuredISOwillreduceperformance
andthelifeofallwettedparts.
•Alwaysuseasealedcontainerwitha
desiccantdryerinthevent,oranitrogen
atmosphere.Never Never
Never
storeISOinanopen
container.
•KeeptheISOpumpwetcuporreservoir(if
installed)lledwithappropriateTSLuid.
TheTSLuidcreatesabarrierbetweenthe
ISOandtheatmosphere.
•Useonlymoisture-proofhosescompatible
withISO.
•Neverusereclaimedsolvents,whichmay
containmoisture.Alwayskeepsolvent
containersclosedwhennotinuse.
•Alwayslubricatethreadedpartswithan
appropriatelubricantwhenreassembling.
•CyclematerialthroughtheReactorat
leastonceperweekwhenwettedand
sittingidle.UsetheA-sidetransferpump
toushmaterialthroughtheA-side
outletmanifoldrecirculationtting.See
FlushtheEquipment,page35.
•TheReactorshouldnotbestoredafter
ingestingairorrunningoutofmaterial.
Priortostorage,followthePurgeAir
procedureinyouroperationmanual.
NOTE: NOTE:
NOTE:
Theamountoflmformationandrateof
crystallizationvariesdependingontheblendof
ISO,thehumidity,andthetemperature.
Foam Foam
Foam
Resins Resins
Resins
with with
with
245 245
245
fa fa
fa
Blowing Blowing
Blowing
Agents Agents
Agents
Somefoamblowingagentswillfrothat
temperaturesabove90°F(33°C)whennotunder
pressure,especiallyifagitated.Toreduce
frothing,minimizepreheatinginacirculation
system.
14
3A8500D