Option 1 –Direct Replacement (Mean Well)
1. Open the DIN rail fuse block(s) to remove power to the power supply and controller.
2. Disconnect the LED wiring on the back and carefully set aside the right LED board, or flip it over and lay
gently on top of the left LED board. Do not bend the LEDs in this process.
3. Remove the AC input and DC output wires.
4. Remove the two securing nuts and remove the power supply.
5. Install the new power supply in the same manner with the AC input connections facing up. Rewire the
power supply with the wires removed from step 3:
a. AC in = hot (black), neutral (white)
b. DC out = red (positive), black (negative)
6. Carefully install the right LED board back onto the radar enclosure with the bottom retaining tabs going in
first. For LED boards that have exposed solder joints on the rear do not short them to the enclosure frame
while power is applied.
7. Install the polycarbonate window back onto the radar sign and ensure it is secured with the window tab.
The glossy side faces towards traffic.
8. Wait for traffic to activate the system and ensure the radar sign is working properly.
9. Reinstall the sign and secure to the enclosure using the two hex screws.
