Toro Groundsmaster 7210 - Electrical System Quick Checks; Testing the Battery (Open Circuit Test); Testing the Charging System

ElectricalSystemQuickChecks
TestingtheBattery(OpenCircuitTest)
Useamultimetertomeasurethevoltagebetweenthebatteryterminals;referto
BatteryT estTable(page5–20).
SetthemultimetertotheDCvoltssettings.Thebatterymustbeatatemperature
of16°Cto38°C(60°Fto100°F).EnsurethatthekeyisintheOFFpositionand
alltheaccessoriesareturnedoff.
Connectthepositive(+)meterleadtothepositivebatterypostandnegative(-)
meterleadtothenegativebatterypost.
Measureandrecordthebatteryvoltage.UsetheBatteryT estT able(page5–20)
todeterminechargelevelofthebattery.
Note:Thistestprovidesarelativeconditionofthebattery.Theloadtestingof
thebatteryprovidesadditionalandmoreaccurateinformation;refertoServicing
theBattery(page5–61).
BatteryTestTable
VoltageMeasured
BatteryChargeLevel
12.68V(orhigher)Fullycharged(100%)
12.45V
75%charged
12.24V
50%charged
12.06V
25%charged
11.89V
0%charged
TestingtheChargingSystem
Thisisasimpletestthatdeterminesifachargingsystemisfunctioning.Ittells
youifthechargingsystemhasanoutput,butnotitscapacity.
Toolrequired:DigitalmultimetertosettheDCvolts.
Testinstructions:Connectthepositive(+)multimeterleadtothepositivebattery
postandnegative(-)multimeterleadtothenegativebatterypost.Keepthetest
leadsconnectedtothebatterypostsandrecordthebatteryvoltage.
Note:Whenstartingtheengine,thebatteryvoltagedropsandthenmust
increaseoncetheengineisrunning.
Note:Dependingupontheconditionofthebatterychargeandbattery
temperature,thebatteryvoltageincreasesatdifferentratesasthebattery
charges.
Starttheengineandrunitathigh-idlespeed(3,000rpm).Allowthebatteryto
chargeforaminimumtimeof3minutes.Recordthebatteryvoltage.
Note:Afterrunningtheengineforaminimumtimeof3minutes,thebattery
voltagemustbeminimum0.50Vhigherthanthatoftheinitialbatteryvoltage.
RefertotheBatteryVoltageTable(page5–21)foranexampleofacharging
systemthatisfunctioning.
ElectricalSystem:ElectricalSystemQuickChecks
Page5–20
Groundsmaster7210
16222SLRevC