Graco Reactor 2 H-XP3

Troubleshooting
PROBLEM PROBLEM
PROBLEM
CAUSE CAUSE
CAUSE
SOLUTION SOLUTION
SOLUTION
Loosereversingproximityswitch.
SeePumpsDoNotReverse
Direction,page41.
Loosepistonpackingbolt.
SeePumpsDoNotReverse
Direction,page41.
Pumpsdonotreversedirectionor
pumpsdonotmove.
Faultydirectionalvalve.
SeePumpsDoNotReverse
Direction,page41.
Feedpumppressureistoolow.
Adjustpressuretomaintain100psi
(0.7MPa,7bar)minimum.
Pumpcavitation.
Fluidistoothick.Consultyour
materialsupplierforrecommended
󰘱uidtemperaturetomaintaina
viscosityof250to1500centipoise.
Loosereversingproximityswitch.
SeePumpsDoNotReverse
Direction,page41.
Erraticpumpmovement.
Faultydirectionalvalve.Replacedirectionalvalve.
Obstructed󰘱uidhoseorgun;󰘱uid
hoseIDtoosmall.
Open󰘱uidhosetoclearobstruction,
orusehosewithlargerID.
Wornpistonvalveorintakevalvein
displacementpump.
Seepumpmanual.
Pumpoutputlow.
Inadequatefeedpumppressure.Checkfeedpumppressureand
adjustto100psi(0.7MPa,7bar)
minimum.
Fluidleakatpumprodseal.Wornthroatseals.
Replace.Seepumpmanual.
Fluidleakingfrompumpoutlet
rupturedisk.
CheckifheaterandPRESSURE
RELIEF/SPRAYvalve(SAorSB)
areplugged.Clear.Replace
rupturediskwithanewone;donot
replacewithapipeplug.
Nopressureononeside.
Inadequatefeedpumppressure.Checkfeedpumppressureand
adjustto100psi(0.7MPa,7bar)
minimum.
Note
Table1isrelatedtotroubleshootingproblem,
“Proportioningpumpdoesnotholdpressure
whenstalled.”
Table Table
Table
1 1
1
Determine Determine
Determine
Valve Valve
Valve
Leak Leak
Leak
Location Location
Location
B-sidepumppiston
valveisdirtyor
damaged.
B-sidepumpinletvalve
isdirtyordamaged.
A-sidepumpinletvalve
isdirtyordamaged.
A-sidepumppiston
valveisdirtyor
damaged.
Pressure/Material Pressure/Material
Pressure/Material
Imbalance Imbalance
Imbalance
Todeterminewhichcomponentisoutofbalance,
checkthecolorofsomesprayedmaterial.
Two-componentmaterialsareusuallyamixof
lightanddark󰘱uids,sotheunder-proportioned
componentcanoftenbereadilydetermined.
Whenyouhavedeterminedwhichcomponentis
under-proportioned,sprayoff-target,focusingonthe
pressuregaugeforthatcomponent.
For example: ifcomponentBisunder-proportioned,
focusontheB-sidepressuregauge.IftheB
gaugereadsconsiderablyhigherthantheAgauge,
theproblemisatthegun.IftheBgaugereads
considerablylowerthantheAgauge,theproblem
isatthepump.
40 334946C