Toro 30447N - Engine Cooling Fan Operation; Checking the Interlock Switches

1.Ensurethattheparkingbrakeisset.Removeyourfoot
fromthetractionpedalandensurethatitisinneutral.
2.Movethethrottlecontroltothemid-idleposition.
3.TurntheignitionkeytotheRunposition.Theglow
indicatorwilllight.
4.Whentheglowindicatordims,turntheignitionkey
totheStartposition.Releasethekeyimmediately
whentheenginestartsandallowittoreturntothe
Runposition.Allowenginetowarmupatmidspeed
(withoutload),thenmovethethrottlecontroltothe
desiredposition.
Important:Donotrunthestartermotormore
than15secondsatatimeorprematurestarter
failuremayresult.Iftheenginefailstostartafter15
seconds,turnthekeytotheOffposition,recheck
thecontrolsandprocedures,wait15additional
seconds,andrepeatthestartingprocedure.
Whenthetemperatureislessthan20°F(-75C),preheat
glowplugstwicepriortoinitialcrankingattempt.The
startermotorcanberunfor30secondsonthen60
secondsofffor2attempts.
5.Tostoptheengine,movethethrottlecontrolbackward
totheSlowposition,movethePTOlevertotheOff
position,settheparkingbrake,androtatetheignition
keytoOff.Removethekeyfromtheswitchtoprevent
accidentalstarting.
Important:Allowenginetoidlefor5minutesbefore
shuttingitoffafterafullloadoperation.Failuretodo
somayleadtoturbo-chargertrouble.
EngineCoolingFanOperation
Theenginecoolingfanswitchhastwopositionsfor
controllingtheoperationofthefan.ThetwopositionsareR
andAuto.Thefanhastheabilitytoreversetoblowdebris
offoftherearscreen.Undernormaloperatingconditions,
theswitchwillbeintheAutoposition.InAuto,thefanspeed
willbecontrolledbythecoolantorhydraulicoiltemperature
andwillautomaticallyreversetoblowdebrisoffoftherear
screen.Areversecycleisautomaticallyinitiatedwheneither
thecoolantorhydraulictemperaturereachesacertainpoint.
BypressingthefanswitchforwardintotheRposition,the
fanwillcompleteamanuallyinitiatedreversecycle.Itis
recommendedtoreversethefanwhentherearscreenis
cloggedorpriortoenteringtheshoporthestoragearea.
CheckingtheInterlock
Switches
CAUTION
Ifsafetyinterlockswitchesaredisconnectedor
damagedthemachinecouldoperateunexpectedly
causingpersonalinjury.
•Donottamperwiththeinterlockswitches.
•Checktheoperationoftheinterlockswitches
dailyandreplaceanydamagedswitchesbefore
operatingthemachine.
Themachinehasinterlockswitchesintheelectricalsystem.
Theseswitchesaredesignedtostoptheenginewhenthe
operatorgetsoffoftheseatwhenthetractionpedalis
depressed.However,theoperatormaygetoffoftheseat
whiletheengineisrunningandthetractionpedalisinneutral.
AlthoughtheenginewillcontinuetorunifthePTOleveris
disengagedandthetractionpedalisreleased,itisstrongly
recommendedthattheenginebestoppedbeforerisingfrom
theseat.
Tochecktheoperationoftheinterlockswitches,perform
thefollowingprocedure:
1.Drivethemachineslowlytoalarge,relativelyopen
area.Lowerthecuttingunit,stoptheengine,andapply
theparkingbrake.
2.Sitontheseatanddepressthetractionpedal.Tryto
starttheengine.Theengineshouldnotcrank.Ifthe
enginecranks,thereisamalfunctionintheinterlock
systemthatshouldbecorrectedbeforebeginning
operation.
3.Sitontheseatandstarttheengine.Risefromtheseat
andmovethePTOlevertoOn.ThePTOshouldnot
engage.IfthePTOengages,thereisamalfunctionin
theinterlocksystemthatshouldbecorrectedbefore
beginningoperation.
4.Sitontheseat,engagetheparkingbrakeandstartthe
engine.Movethetractionpedaloutoftheneutral
position.Theengineshouldkill.Iftheenginedoesnot
kill,thereisamalfunctionintheinterlocksystemthat
shouldbecorrectedbeforebeginningoperation.
5.Sitontheseat,starttheengineandsetspeedrangeto
low .MovePTOswitchforwardtoengagecuttingunits.
Important:Thecenterliftlevermustmomentarily
bepushedtothelowerpositiontoenablePTO
circuitactuationbyPTOswitch.
•Raiseeitherwingcuttingunittothetransportposition.
Thecuttingunitshouldturnoff.Ifthecuttingunitdoes
notstop,thereisamalfunctionintheinterlocksystem
thatshouldbecorrectedbeforeresumingoperation.
•Ifthewingcuttingunitisloweredagainthemotorshould
re-start.Ifthecuttingunitdoesnotre-start,thereis
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