Specifications

Maintenance and Troubleshooting
ADDvantage-32 PLUS ● AC to DC Power Converter
7-39
b. Remove the terminal screws that attach the remaining wire leads to
the device to be replaced.
c. Using a 5/32" Allen wrench, remove the mounting screws on each
end of the device and remove the device.
d. Apply a layer of thermally conductive compound to bottom of new
device and reinstall. Tighten the #10-24 socket head screws to 38-
50 in-lb. Recheck torque after a minimum of 3 hours and apply
torque seal.
e. Replace the leads and the bus bars, using the metric hardware
provided with the semiconductor device. Tighten the terminal
screws to 22-30 in-lb., using a #2 Phillips screwdriver.
************************************************************
For 550 ADC models, this CAUTION applies to the field SCR
(CR7) only. It is important to keep the yellow wire of each pair on
the “outboard” side of the device and the red wire on the “inboard”
side.
************************************************************
8. The control power fuses (F3-7, 12, and 13) are readily accessible just to
the right of the field SCR and diode.