Miller Nitro 7380 - Foam Marker Troubleshooting

8-TROUBLESHOOTING
Foammarkertroubleshooting
Iffoammarkerperformanceisunsatisfactory,checkthefollowingtroubleshootingguideforpossibleproblemsand
solutions.
Symptom
Possiblecause
Correctiveaction
Airsupplynotproperlyconnected.Tobesuretheairlineandliquidlines
donothaveaholeinthemorare
notpinched.Removeairandliquid
tubingateachfoamheadandcheck
forow.
Notenoughfoamconcentrate.
Veryhardwatermayrequireagreater
amountofconcentratetoproduce
goodfoam.Nothavingenoughfoam
concentratemaymakegoodfoam,
butnotmakeenoughofit.Usea
highqualityfoamconcentrate.Adjust
foamconcentratewithincabdisplay
panel.
In-linelterdirtyorclogged.Checkandcleanthein-linelter.
Youdonotgetfoam.
Shutoffvalveclosed.Openshutoffvalvenearlter.
Notenoughfoamconcentrate.Adjustfoamconcentratewithincab
displaypanel.
Holeinairline.Pinchedairorliquid
lines.
Checkairandliquidlines.
Notenoughfoam.
Cloggedin-linelter/foamheads.Checkandcleanlter/foamheads.
Notenoughfoamconcentrate.Adjustfoamconcentratewithincab
displaypanel.
Wetfoam.
Dirtyin-linelter/foamheads.Checkandcleanlter/foamheads.
Foamdoesnotlastontheground.T oolittleconcentratebeingused.
Usehigherqualityfoamconcentrate
orincreaseconcentratewithincab
displaypanel.
Blowingfoaminwindyweather.
Foamtoolightordry.Decreaseconcentratewithincab
displaypanel.
8-12