AEMC 4500 - Changing the Supply Voltage (110;220 V AC )

40 Digital Ground Resistance Tester Model 4500
12 V DC
Power Supply Board
Wing Nuts
Shock-Absorbing Layer
Lengthwise
Locking Screws
Stress Relief Plate
Figure 23
• Disconnectthetwowireswhichconnectthebatterytothepower
supply board.
• Replacethewornbattery.
• Connectthenew12VDCbatterytothepowersupplyboard.Pay
close attention to the polarities printed on the power supply board.
12 V
110V 220V
Source Voltage Selection
Switch (110V AC/220V AC)
Power Supply Board
12 V DC
3.15 A
Supply Fuse
Figure 24
5.2.6 Changing the Supply Voltage (110/220VAC)
• OpenuptheModel4500.Positiontheselectorswitchonthepower
supplyboard(SeeFigure24).
• Settheplate(“11”inFigure3)whichindicates“220VAC”ononeside
and“110VAC”ontheother,totheselectedvoltage.
• ReassembletheModel4500.