Toro 34215 - Calibrating the Sprayer; Calculating the Ground Speed

CalibratingtheSprayer
Note:Beforeyouusethesprayerforthersttime
orchangethenozzlesorwhenthesprayerisoutof
adjustment—calibratethesprayerforgroundspeedandow
rate.
Note:Theleftandrightsprayerboomnozzlesarewide
pattern(white)nozzlesandthecenternozzleisnarrowpattern
(red)nozzle.
Note:Refertothechemicalproductlabelforoutput
recommendations.
Themethodtocalibratethesprayerowinvolvesdrivinga
presetdistance,recordingthetime,andthenmeasuringthe
amountofliquidappliedduringthattime.
CalculatingtheGroundSpeed
Operatorsuppliedequipment:Stopwatchcapableof
measuring±1/10second.
1.Measureandvisiblymarkacourselengthtouseto
calculateyourtheaveragegroundspeed.
Recordyourcourselengthhere
.
Note:Allowampledistanceaheadofthestarting
markertoensurethemachineisatfullgroundspeed
whenyoucrosstherstmarkerofthecourse.
Note:Example:thecourselengthequals45.7m
(150ft).
2.Addcleanwaterintothespraytank1/2full;referto
FillingtheSprayTank(page39).
3.Drivethesprayertoanareafarenoughawayfrom
thecoursesothatthemachinewillbetravelingatthe
desiredgroundspeedforsprayingbeforetheitreaches
therstmarker.
4.Useastopwatchtomeasurethetime(inseconds)
thatittakesthemachinetotravelthemarkedcourse
(45.7m(150ft)inthisexample)whilemaintainingthe
desiredgroundspeed.
Note:Recordyourcoursetimeinthecoursetime
worksheet.
CourseTimeWorksheet
Time
Test1seconds
Test2seconds
Test3seconds
5.Repeatsteps2through42-additionaltimes.
6.Movethesprayertoalevelsurface,leavethe
motion-controlleverintheNEUTRALposition,and
shutofftheengine.
7.Averagethe3testruntimes(inseconds)usingthe
averagecoursetimeformulabelow:
Recordyourtheaveragecoursespeedhere
.
AverageCourseTimeFormula
Formula
time1+time
2+time3
3
=
Theaveragetimeto
drivethecourse
Example21.6+
19.1+18.4
seconds
3
=
19.7seconds
8.Usethegroundspeedformulabelowtodeterminethe
averagegroundspeed.
Recordyourtheaveragegroundspeedhere
.
Note:1kph=16.6m/minute(1mph=88ft/minute)
GroundSpeedFormula
Formula
Distancetraveled
m(ft)x60seconds
Time(seconds)x
16.7m/minute(88ft/minute)
=
Speed(mph)
Example45.7m(150ft)x60seconds
19.7secondsx16.6m/minute
(88ft/minute)
=
8.4kph
(5.2mph)
UnderstandingtheEffectiveSprayPatternWidth
Note:Sprayerpressureregulator:2.8bar(40psi).
•Thenarrow-spraypattern(Figure39)onthemachineis
122cm(48inches)wide.
35