Zeiss Humphrey FDT 710 User Manual page 23

Operation
3-3
The FDT voltage
CAUTION: VERIFY OPERATING VOLTAGE SELECTION —
selector switch is normally set to the appropriate operating voltage before
shipment (115 V or 230 V). Before applying power to the FDT, verify that the
Voltage Selector Indicator adjacent to the O/I Power Switch displays the
appropriate operating voltage (115 V or 230 V) in your region.
Voltage Selector Indicator
In case you need to change the operating voltage, make sure that the Power Cord is NOT
connected and use a flat screwdriver to pry open the Fuse Drawer Cover. Remove the Fuse
Carrier/Voltage Selector, by again using a flat screwdriver. Rotate the Fuse Carrier/Voltage
Selector so the proper voltage will be visible when the Fuse Drawer Cover is closed.
Re-install the Fuse Carrier. Close the Fuse Drawer Cover and check to be sure the proper
voltage appears in the Voltage Selection Window.
In case you need to replace the fuses, remove the fuse carrier/voltage selector as described
above. Replace both fuses on the two sides of the fuse carrier with new fuses (Type T 0.400
A 250 V). Reinstall the fuse carrier making sure the voltage selection is correct.
Humphrey FDT User Manual 2660021149532 Rev. B 2015-11