Toro 30381N - The Safety Interlock System

TheSafetyInterlockSystem
CAUTION
Ifthesafetyinterlockswitchesaredisconnectedor
damagedthemachinecouldoperateunexpectedly
causingpersonalinjury.
•Donottamperwiththeinterlockswitches.
•Checktheoperationoftheinterlockswitches
dailyandreplaceanydamagedswitchesbefore
operatingthemachine.
UnderstandingtheSafetyInterlock
System
Thesafetyinterlocksystemisdesignedtopreventtheengine
fromstartingunless:
•Youaresittingontheseatortheparkingbrakeisengaged.
•Thepowertakeoff(PTO)isdisengaged.
•Themotioncontrolleversareintheneutrallocked
position
•Theenginetemperatureisbelowthemaximumoperating
temperature.
Thesafetyinterlocksystemalsoisdesignedtostoptheengine
whenthetractioncontrolsaremovedfromtheneutrallocked
positionwiththeparkingbrakeengaged.Ifyourisefromthe
seatwhenthePTOisengagedthereisa1seconddelayand
thentheenginestops.
TestingtheSafetyInterlockSystem
ServiceInterval:Beforeeachuseordaily
Testthesafetyinterlocksystembeforeyouusethemachine
eachtime.Ifthesafetysystemdoesnotoperateasdescribed
below,haveanAuthorizedServiceDealerrepairthesafety
systemimmediately.
1.Sittingontheseat,engagetheparkingbrakeandmove
thePTOtoon.Trystartingtheengine;theengine
shouldnotcrank.
2.Sittingontheseat,engagetheparkingbrakeandmove
thePTOtooff.Moveeithermotioncontrollever(out
ofneutrallockedposition).Trystartingtheengine;the
engineshouldnotcrank.Repeatforothercontrollever.
3.Sittingontheseat,engagetheparkingbrake,movethe
PTOswitchtooffandmovethemotioncontrollevers
totheneutrallockedposition.Nowstarttheengine.
Whiletheengineisrunning,releasetheparkingbrake,
engagethePTOandriseslightlyfromtheseat;the
engineshouldstopwithin2seconds.
4.Withoutanoperatorontheseat,engagetheparking
brake,movethePTOswitchtooffandmovethe
motioncontrolleverstotheneutrallockedposition.
Nowstarttheengine.Whiletheengineisrunning,
centereithermotioncontrol;theengineshouldstop
within2seconds.Repeatfortheothermotioncontrol.
5.Withoutanoperatorontheseat,disengagetheparking
brake,movethePTOswitchtooff,andmovethe
motioncontrolleverstotheneutrallockedposition.
Trystartingtheengine;theengineshouldnotcrank.
UsingtheSCMtoDiagnoseSystem
Problems
Themachineisequippedwithastandardcontrolmodule
(SCM)monitoringsystemthattracksthefunctionofvarious
keysystems.TheSCMislocatedundertherightcontrol
panel.Accessitthroughthesidepanelcover(Figure47).Tip
theseatupandopenthesidepanelcoverbyreleasingthe2
latchesandpullingoutonit.
Figure47
1.Sidepanelcover
2.Latches
OnthefaceoftheSCMare11LEDsthatilluminateto
indicatevarioussystemconditions.Sevenoftheselightscan
beusedbytheoperatorforsystemdiagnosis.RefertoFigure
48foradescriptionofwhateachlightmeans.Fordetails
onusingtherestoftheSCMfunctions,refertotheService
Manual,availablethroughyourAuthorizedToroDistributor.
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