Toro 41188 - Agitation-Bypass Valve Knob Position; Calibrating the Agitation-Bypass Valve

AdjustingtheBypassValves
1.Usingtheapplication-rateswitch,adjustthe
applicationrateaccordingtothetablebelow.
NozzleColorSI(Metric)
English
Turf
Yellow
159l/ha
17gpa0.39gpk
Red
319l/ha
34gpa0.78gpk
Brown
394l/ha
42gpa0.96gpk
Gray478l/ha
51gpa1.17gpk
White
637l/ha
68gpa1.56gpk
Blue
796l/ha
85gpa1.95gpk
Green1,190l/ha
127gpa2.91gpk
2.Turnofftheleftsectionandadjustthe
section-bypassknob(Figure18)untilthe
pressurereadingisatthepreviouslyadjusted
level(typically2.75baror40psi).
Note:Thenumberedindicatorsonthebypass
knobandneedleareforreferenceonly.
g028047
Figure18
1.Section-bypassadjustmentknobs
3.Turnontheleftsectionandturnofftheright
section.
4.Adjusttherightsection-bypassknob(Figure18)
untilthepressurereadingisatthepreviously
adjustedlevel(typically2.75baror40psi).
5.Turnontherightsectionandturnoffthecenter
section.
6.Adjustthecentersection-bypassknob(Figure
18)untilthepressurereadingisatthepreviously
adjustedlevel(typically2.75baror40psi).
7.Turneachsectionoff.
8.Turnthepumpoff.
Note:Calibrationisnowcomplete.
Agitation-BypassValve
KnobPosition
•Theagitation-bypassvalveisinthefullopen
positionasshowninFigure19A.
•Theagitation-bypassvalveisintheclosed(0)
positionasshowninFigure19B.
•Theagitation-bypassvalveisinanintermediate
(adjustedrelativetothepressuregaugeforthe
sprayersystem)positionasshowninFigure19C.
g214029
Figure19
1.Open
3.Intermediateposition
2.Closed(0)
Calibratingthe
Agitation-BypassValve
ServiceInterval:Yearly
Selectanopenatareatoperformthisprocedure.
1.Fillthespraytankwithcleanwater.
2.Verifytheagitation-controlvalveisopen.Ifithas
beenadjusted,openitcompletelyatthistime.
3.Settheparkingbrakeandstarttheengine.
4.SettherangeselectortoNEUTRAL.
5.SetthepumpswitchtotheONposition.
6.Presstheacceleratorpedaltoachievemaximum
enginespeedandsetthethrottlelock.
7.Setthe3sectionvalvestotheOFFposition.
8.Setthemaster-sectionswitchtotheONposition.
9.SetthesystempressuretoMAXIMUM.
10.PresstheagitationswitchtotheOFFposition
andreadthepressuregauge.
•Ifthereadingremainsat6.9bar(100psi)the
agitation-bypassvalveisproperlycalibrated.
•Ifthepressuregaugereadsdifferently,
continuetothenextstep.
11.Adjusttheagitation-bypassvalve(Figure20)
onthebacksideoftheagitationvalveuntilthe
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