MKS 670B - How to Change the Line Voltage Selection

How To Change the Line Voltage Selection Cha
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How To Change the Line Voltage Selection
The 670 instrument can use power from any of the following line voltages:
•10
0 to 120 VAC nominal on the 115 V setting
(factory default setting)
•
200 to 240 VAC nominal on the 230 V setting
To change the line voltage:
1. Disconnect the power cord from the 670 instrument.
Warning
To avoid an electrical shock, be sure to disconnect the
power cord
before
proceeding.
2. Disconnect all cables from the connectors located at the back of the unit.
3. Locate the Line Voltage selector switch on the rear panel of the 670 instrument.
Refer to Figure 7, page 33, for the location of the Line Voltage selector switch.
4. Insert a small device, for example, a screwdriver, to slide the switch so the “115V” label
is visible to operate in the 115 V range, or so the “230V” label is visible to operate in the
230 V range.
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