TestingtheSpeedControlPotentiometer(continued)
2.Disconnectthebatterypack;refertoConnectingtheLithiumBatteryPack
(page5–7).
3.Removetheconsolecoverfromthehandletogetaccesstothespeed
controlpotentiometer.
4.Disconnectthemachinewireharnessconnectorfromthepotentiometer,and
removethepotentiometerfromthemachine(Figure110).
Note:Beforetakingthesmallresistancereadingswithadigitalmultimeter,
shortthemultimetertestleadstogether.Themeterdisplaysasmall
resistancevalue(usually0.5ohmsorless).Thisresistanceisbecauseofthe
internalresistanceofthemultimeterandtestleads.Subtractthisvaluefrom
themeasuredvalueofthecomponentthatyouaretesting.
g202576
Figure111
1.T erminalA2.T erminalB
3.T erminalC
5.Useamultimeter,measuretheresistancesbetweenthepotentiometer
terminalsasfollows(Figure111):
A.CheckthattheresistancebetweentheterminalsBandCisapproximately
5,000ohms.Recordthemeasuredresistance.
B.MeasuretheresistancebetweentheterminalsAandCandthenmeasure
theresistancebetweentheterminalsAandB.Recordtheseresistances.
Thetotalofthe2measuredresistancesshouldbeapproximately5,000
ohms.
C.Rotatethereelspeedpotentiometertoothersettingsandrepeatthestep
B.Thetotalofthe2resistancesshouldconsistentlybeapproximately
5,000ohms.
D.Ifmeasuredresistancesareincorrect,replacethespeedcontrol
potentiometer.
6.Afteryoucompletethetesting,securethepotentiometertothemachine
(Figure110).Securethewireharnessconnectortothepotentiometer.
Securetheconsolecovertothehandle.
7.Connectthebatterypack;refertoConnectingtheLithiumBatteryPack
(page5–7).
Greensmaster
®
eFlex1800,2100and2120
Page5–61
ElectricalSystem:TestingtheElectricalComponents
12189SLRevE
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