Toro 30695 - Testing the Safety Interlock System

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(Figure20).
Toopenthesidepanelcover,releasethe2latchesandpull
outonit.
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Figure20
1.Latches
2.Sidepanelcover
OnthefaceoftheSCMare11LEDsthatilluminateto
indicatevarioussystemconditions.Sevenoftheselightscan
beusedbytheoperatorforsystemdiagnosis.RefertoFigure
21foradescriptionofwhateachlightmeans.Fordetails
onusingtherestoftheSCMfunctions,refertotheService
Manual,availablethroughyourAuthorizedToroDistributor.
Figure21
1.Hightemperatureshutdown—theenginetemperaturehas
exceededsafelevelsandtheenginehasbeenshutdown.
Checkthecoolingsystem.
2.Hightemperaturewarning—theenginetemperatureis
approachingunsafelevelsandthemowerdeckhasbeen
shutdown.Checkthecoolingsystem.
3.Operatorisintheseat
4.ThePTOisOn
5.Theparkingbrakeisnotengaged
6.ControlsareinNeutral
7.TheSCMisreceivingpowerandisoperational
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