Table of Contents
Advertisement
SECTION 6
6.4.1 Power Rectifiers
Power Rectifiers located
behind the front panel.
Troubleshooting Procedures –Negative Plate
Location of Neg. Plate
Location of fuses F8 and F9
6-14
ESP 400C and 600C Plasma Power Sources
Power Rectifiers – Procedure to access behind the
front panel
1. Remove top cover and side panels
2. Locate and disconnect plug in rear of ammeter
(white plug with one red and one black wire)
3. Remove pilot arc switch
4. Disconnect voltmeter
5. Disconnect orange and yellow wires from relay
K4.
6. Remove two bolts holding the left side of the
front panel to the base.
7. Remove three bolts holding across the center
base of the front panel. These are accessed
from underneath.
8. Remove one of the bolts holding the right side
of the front panel to the base. Loosen the
second bolt. Of these two bolts, remove the
bolt on the left and loosen the bolt on the right.
9. Swing the front panel out to gain access to
power rectifier components.
1. Visually inspect fuses F8 and F9. Replace if
they show signs of being blown or melted.
Inspect diodes. If ruptured or burned, replace
all diodes on the NEG Plate. If diodes appear to
be OK, proceed to next step.
Troubleshooting
Advertisement
Table of Contents
