24VoltCoolingFans
g288619
Figure271
1.Radiatorcoolingfanpanel4.Flangeheadscrew(16)7.Flangeheadscrew(2)
2.Hydraulicoilcoolerfanpanel5.Flangenut(16)8.Flangenut(2)
3.24Voltcoolingfan(4)6.Harnesscoverplate(2)
Groundsmaster5900/5910machinesincludetwo(2)panelsofcoolingfans.One
panelcoolstheradiatorandtheothercoolsthehydraulicoilcooler.Eachpanel
includestwo(2)24voltcoolingfansoperatingatthesamespeedanddirection.
Allfourcoolingfansareidentical.
Eachofthefour(4)fanassembliesincludethe24VDCfanmotoranda12VDC
fancontroller.Thecoolingfanmotorsreceivepowerfromthe24Voltsystem
contactor.Usinginputsfromthecoolanttemperaturesenderandthehydraulic
oiltemperaturesender,themasterTECworkswiththeinternalfancontrollersas
necessarytocontrolthefanspeedanddirection.Inreturn,thefancontrollers
provideahardwiredfaultsignalusedasaninputtothemasterTECasthe
coolingfansarenotontheCAN−bussystem(seeCAN−busCommunications
(page6–8)).
Note:Ifafaultcodeisgeneratedbyacoolingfan,bothfansinthepanelmust
betested.
See24VoltSystem(page6–7)foradditionalfanoperationinformation.
ElectricalSystem:ComponentTesting
Page6–128
Groundsmaster
®
5900&5910
16227SLRevB
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