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POWERMAX45 CONTROL BOARD REPLACEMENT KIT
Replace the control board
1. Turn OFF the power, disconnect the power cord, and disconnect the gas supply.
2. Remove the 2 screws from the handle on the top of the power supply. Remove the handle and then lift the cover off
the power supply. Remove the Mylar barrier that protects the power board.
3. Detach the ribbon cable from the power board at J7 (200-240 V CSA and 230 V CE) or J8 (400 V CE).
4. Test the new control board before installing it by attaching its ribbon cable to the power board.
NOTE: Make sure the control board is not touching the power board.
Reconnect the power, turn the system on, and verify that the start LED on the control board is the only LED
illuminated. Also, the fault LEDs on the front panel should be extinguished.
5. Disconnect the electrical power and the ribbon cable again, and set aside the new control board.
Caution:
Static electricity can damage circuit boards.
• Use proper precautions when handling printed circuit boards.
– Store PC boards in anti-static containers.
– Wear a grounded wrist strap when handling PC boards.
6. Remove the amperage control knob by pulling it straight out from the end panel.
7. Remove the screw from the bottom of the front end panel, then remove the panel or or gently tilt it away from the
base.
8. Remove the 3 retaining screws from the
old control board and lift it out of the
power supply.
9. Screw the new control board into place
with the 3 retaining screws and then
attach the ribbon cable.
10. Press the amperage control knob onto the
post. There is a flat side on the post.
Ensure that the flat side of the opening in
the knob aligns with the flat side on the
post.
11. Reposition the front end panel.
12. Being careful not to pinch any of the wires, replace the Mylar barrier and slide the cover back onto the power
supply. Position the handle over the holes in the top of the cover, then use the 2 screws to secure the cover.
13. Reconnect the electrical power and the gas supply.
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All manuals and user guides at all-guides.com
Ribbon cable
Control board
Field Service Bulletin
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