Toro Greensmaster 3120 - Relays

Relays
g223739
Figure92
1.Controlpanelshield
3.RelayK8
2.RelaysK1–K64.RelayK7
SeveralrelaysareusedontheGreensmaster3120machine.Therelaysare
identicalve(5)terminalrelaysthatarelocatedtowardthefrontofthemachine;
refertoFigure92).
IdentifyingtheRelaysandtheirFunctions
Note:RefertotheElectricalSchematicsandWireHarnessesinAppendixA
(pageA–1)foradditionalrelaycircuitinformation.
KillRelay(K1)Whenenergized,thekillrelayprovidesapathtogroundsothe
startersolenoidcoilcanbeenergized.Whende-energized,thekillrelayprovides
apathtogroundfortheenginemagnetotostoptheengine.Thekillrelayis
locatedunderthecontrolpanelontheleftsideoftheoperatorseat.
StartSafetyRelay(K2)Thestartsafetyrelayensuresthatthefunctioncontrol
leverisinneutralbeforetheenginecanbestarted.Boththestartsafetyrelay
andthekillrelaymustbeenergizedfortheenginetocrank.Thestartrelayis
locatedunderthecontrolpanelontheleftsideoftheoperatorseat.
Joystickrelay(K3)Thejoystickrelayisenergizedbythejoysticklowerswitch.
Therelaysuppliespowertothesolidstatetimerusedwhenloweringthecutting
units.Thejoystickrelayislocatedunderthecontrolpanelontheleftsideof
theoperatorseat.
MowRelay(K4)Whenenergized,themowrelaysuppliespowertothereel
engagesolenoidvalvecoil(S1formachineswithoutbacklaporS1R1for
machineswithbacklap)tobeenergizedforcuttingunitoperation.Themowrelay
islocatedunderthecontrolpanelontheleftsideoftheoperatorseat.
Greensmaster3120
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ElectricalSystem:TestingtheElectricalComponents
17230SLRevC