MKS 246C, Instruction Manual

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Electrical Information Chapter Two: Installation
32
Line Voltage
The Line Voltage Selector Switch, located on the underside of the 246 unit, configures the unit to
accept either 115 or 230 VAC input voltage. The voltage selected is visible through the window
in the panel cutout.
Caution
The Line Voltage Selector must be set to the proper input voltage
before you connect the AC line cord. Otherwise, the unit will be
severely damaged.
To set the line voltage:
1. Ensure that the power cord and all interface cables are disconnected from the 246
instrument.
2. Use a blunt instrument, such as a flat head screw driver, to change the position of the
switch.
The value of the selected line voltage is visible in the panel cutout.