Examine the contactors

  1. Examine the contactors for black or rough surfaces:
    • For XPR170®, examine the main contactor.
      Figure 1. Location of main contactor for XPR170
      This image shows the location of the main contactor in the XPR170 plasma power supply.
      1 Main contactor
    • For XPR300®, examine the main contactor and inrush contactor.
      Figure 2. Location of the main contactor and inrush contactor for XPR300
      This image shows the location of the main contactor and the inrush contactor in theXPR300 plasma power supply
      1 Main contactor
      2 Inrush contactor
    • For XPR460®, examine the main contactor and inrush contactor.
      Figure 3. Location of the main contactor and inrush contactor for XPR460
      This image shows the location of the main contactor and inrush contactor in the XPR460plasma power supply.
      1 Main contactor
      2 Inrush contactor
  2. If you find a contactor that has unwanted black or rough surfaces, replace the contactor.