Hypertherm Powermax45 Field Service Bulletin page 5

Setting the five-position voltage divider on the Powermax65/85
The factory presets the voltage divider to 50:1. To change the voltage divider to a different setting:
1. Turn OFF the power supply and disconnect the power cord.
2. Remove the power supply cover.
3. Remove the component barrier from the left side of the power supply.
4. Locate the voltage divider DIP switches on the left side of the power supply.
The figure below shows the default setting (50:1) with the number 4 switch up.
5. Set the DIP switches to one of the following settings.
20:1
6. Replace the component barrier. Be careful to get the barrier inside the frame without pinching any wires.
7. Replace the power supply cover.
Field Service Bulletin
21.1:1 30:1
Interface cable replacement
40:1 50:1
3