Graco Reactor 2 H-XP3

Troubleshooting
Proportioning Proportioning
Proportioning
System System
System
Beforeperforminganytroubleshootingprocedures:
1.FollowPressureReliefProcedure,page48.
2.TurnmainpowerOFF.
3.Allowequipmenttocool.
Problems: Problems:
Problems:
Trytherecommendedsolutionsintheordergivenfor
eachproblem,toavoidunnecessaryrepairs.Also,
determinethatallcircuitbreakers,switches,and
controlsareproperlysetandwiringiscorrectbefore
assumingthereisaproblem.
PROBLEM PROBLEM
PROBLEM
CAUSE CAUSE
CAUSE
SOLUTION SOLUTION
SOLUTION
Proportioningpumpdoesnothold
pressurewhenstalled.
Pumppistonorintakevalveleaking.
1.Observegaugestodetermine
whichpumpislosingpressure.
2.Determineinwhichdirection
thepumphasstalledby
observingwhichdirectional
iconisdisplayedontheADM
Homescreen.SeeTable1.
3.Repairthevalve.Seepump
manual.
Restrictionatthegun.
Cleanthegun;seeyourseparate
gunmanual.
Increase󰘱uidsupplyto
proportioningpump:
•Use2:1supplypump
•Useminimum3/4in.(19mm)ID
supplyhose,asshortaspractical
Fluidistoothick.Consult
yourmaterialsupplierforthe
recommended󰘱uidtemperatureto
maintainaviscosityof250to1500
centipoise.
Cleaninletstrainerscreen.
Inadequate󰘱owfrompump;
cavitation.
Wornpumpinletvalveball/seator
gasket.Replacepump.
MaterialImbalance.See
Pressure/MaterialImbalance,
page40.
Pressurerelief/circulationvalve
leakingbacktosupply.
Removereturnlineanddetermine
if󰘱owispresentwhileinSPRAY
mode.
334946C 39