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4.4 Changing the power supply settings Both the transformer and the ballast must be connected correctly for the local AC voltage and frequency. The wrong settings can cause poor performance or demage of the fixture.The factory settings are printed next to the power cord on the front panel. If you want to change the power supply settings,follow the instructions: transformer ballast EU version: 1.Disconnect the fixture from AC power. 2.Remove the top cover of the fixtureby loosening the 4 screws. 3.Move the wire 1 on the transformer connection block to the position according to the desired voltage. 4.Move the wires 2 and 3 on the ballast connection block to the position according to the desired frequency/voltage. US version: 1.Disconnect the fixture from AC power. 2.Remove the front cover by loosening the 4 screws. 3.Move the wire 1 on the transformer connection block to the position according to the desired voltage. 4.Move the wire 2 on the ballast connection block to the position according to the desired frequency. 10