Toro 30534N - The Safety Interlock System

Figure24
Side-dischargeMowerDecksOnly
1.Bolt
3.Under-deckroller(2)
2.Rollershaft
4.Bracket
5.Installthefastenersasillustrated.
TheSafetyInterlockSystem
CAUTION
Ifthesafetyinterlockswitchesaredisconnectedor
damagedthemachinecouldoperateunexpectedly
causingpersonalinjury.
•Donottamperwiththeinterlockswitches.
•Checktheoperationoftheinterlockswitches
dailyandreplaceanydamagedswitchesbefore
operatingthemachine.
UnderstandingtheSafetyInterlock
System
Thesafetyinterlocksystemisdesignedtopreventtheengine
fromstartingunless:
•Youaresittingontheseatortheparkingbrakeisengaged.
•Thepowertakeoff(PTO)isdisengaged.
•Thetractionpedalisintheneutralposition
•Theenginetemperatureisbelowthemaximumoperating
temperature.
Thesafetyinterlocksystemalsoisdesignedtostoptheengine
whenthetractionpedalismovedfromtheneutralposition
withtheparkingbrakeengaged.Ifyourisefromtheseat
whenthePTOisengagedthereisa1seconddelayandthen
theenginestops.
TestingtheSafetyInterlockSystem
ServiceInterval:Beforeeachuseordaily
Testthesafetyinterlocksystembeforeyouusethemachine
eachtime.Ifthesafetysystemdoesnotoperateasdescribed
below,haveanAuthorizedServiceDealerrepairthesafety
systemimmediately.
1.Sittingontheseat,engagetheparkingbrakeandmove
thePTOtoon.Trystartingtheengine;theengine
shouldnotcrank.
2.Sittingontheseat,engagetheparkingbrakeandmove
thePTOtooff.Engagethetractionpedal.Trystarting
theengine;theengineshouldnotcrank.
3.Sittingontheseat,engagetheparkingbrake,move
thePTOswitchtooffandallowthetractionpedalto
returntotheneutralposition.Nowstarttheengine.
Whiletheengineisrunning,releasetheparkingbrake,
engagethePTOandriseslightlyfromtheseat.Ontwo
wheeldrivemachines,theengineshouldstopwithin2
seconds.Onfourwheeldrivemachines,themower
deckwillshutoff.Theenginewillcontinuetorun.
4.Withoutanoperatorontheseat,engagetheparking
brake,movethePTOswitchtooffandmovethe
tractionpedaltotheneutralposition.Nowstartthe
engine.Whiletheengineisrunning,engagethetraction
pedal;theengineshouldstopwithin2seconds.
5.Withoutanoperatorontheseat,disengagetheparking
brake,movethePTOswitchtooff,andallowthe
tractionpedaltoreturntotheneutralposition.Try
startingtheengine;theengineshouldnotcrank.
UsingtheSCMtoDiagnoseSystem
Problems
2wheeldrivemodelsonly
Themachineisequippedwithastandardcontrolmodule
(SCM)monitoringsystemthattracksthefunctionofvarious
keysystems.TheSCMislocatedundertheseat.
OnthefaceoftheSCMare11LEDsthatilluminateto
indicatevarioussystemconditions.Sevenoftheselights
canbeusedbytheoperatorforsystemdiagnosis.Refer
toFigure25foradescriptionofwhateachlightmeans.
FordetailsonusingtherestoftheSCMfunctions,referto
theServiceManual,availablethroughyourAuthorizedToro
Distributor.
26