Toro 41593 - Calibrating the Section Valves; Agitation Bypass Valve Knob Position

Important:Youmustalwayscompletethis
procedureatleast3timestoensurethatthespray
systemisfullyclean,preventingdamagetothe
system.
14.Cleanthestrainer;refertoCleaningtheSuction
Strainer(page25).
Important:Ifyouusedwettablepowder
chemicals,cleanthestraineraftereachtank.
15.Usingagardenhose,rinseofftheoutsideofthe
sprayerwithcleanwater.
16.Removethenozzlesandcleanthembyhand.Replace
damagedorwornnozzles.
CalibratingtheSectionValves
Important:IfyouhavetheProControl™SpraySystem
installed,theboombypassvalvesmustbeclosed.Use
thefollowingadjustmentonlywhenyouarenotusing
theProControlSpraySystem.
Beforeusingthesprayerforthersttimeorifthenozzlesare
changed,adjustthesectionvalvessothatthepressureand
applicationrateremainsthesameforallboomsectionswhen
youturnoneormoresectionsoff.
Note:Thesectionvalvesmustbecalibratedeachtimethe
nozzlesarechanged.
Important:IfmachineisequippedwithaProControl™
SpraySystem,disregardthefollowingstepsbelowthis
importantnoteforcalibratingthesectionvalvesand
readthisnotice:WhenusingaProControl™system,
thesectionvalvesarenotused;closethesectionvalves
byrotatingtheredbypassknobsclockwise.Thevalve
isclosedonceyoufeelaslightresistancewhilerotating
theknob.Applyingexcessivetorquetothebypassknob
coulddamagethevalve.Thebypassknobmayrequire
3to4fullrotations(360°=1rotation)tocompletely
closethevalve.Thenumbersprintedonthevalveare
forreferenceonly;settingtheknobto“0”doesnot
guaranteethevalveisclosed.IfyouareusingthePro
Control™system,youdonotneedtoadjustthesection
valvesoncetheyareclosed.Ifyouusethemachineto
spraymanually(withouttheProControl™system),refer
tothestepsforcalibratingtheboombypassvalvesprior
tousingthemachine.
1.Selectanopenatareatoperformthisprocedure.
2.Fillthespraytankwithcleanwater.
3.Lowertheleftandrightboomsections.
4.Settheparkingbrakeandstarttheengine.
5.Setallthreesectionswitchesandthemasterboom
switchtotheOnposition.
6.Usetheapplicationrateswitchtoadjustthepressure,
asreadonthepressuregauge,untilitisinthecorrect
rangeforthenozzlesthatyouinstalledontheboom
sections(typically276kPaor40psi);refertothe
nozzleselectionguidethatisavailablethroughyour
AuthorizedToroDealer.
7.Recordthereadingonthepressuregauge.
8.Turnoff1oftheboomsectionusingtheappropriate
sectionswitch.
9.Adjustthesectionbypassvalve(Figure30)atthetop
ofthesectioncontrolvalvefortheboomsectionyou
turnedoffuntilthepressurereadingonthegaugeis
thesameasthepressurereadingthatyourecordedin
step7.
Figure30
1.Sectionbypassvalves
10.Turntheboomonandofftoverifythepressuredoes
notchange.
11.Repeatsteps9through10fortheotherboomsections.
12.Drivethesprayeratthedesiredspeedwhilespraying
andturneachboomsectionoffindividually.
Note:Thepressureonthegaugeshouldnotchange.
AgitationBypassValveKnob
Position
•TheagitationbypassvalveisinthefullOpenpositionas
showninAofFigure31.
•TheagitationbypassvalveisintheClose(0)positionas
showninBofFigure31.
•Theagitationbypassvalveisinanintermediate(adjusted
relativetothepressuregaugeforthesprayersystem)
positionasshowninCofFigure31
31