Dover Wayne Helix WM048523 - Dispenser Connection Board Replacement

5
Pull the backlight out. See Figure 6.68.
Figure 6.68: Remove backlight from display
6
Install new backlight and reconnect the cable.
7
Reinstall the bracket onto the bezel.
8
Reconnect the cables.
9
Turn on power.
6.17 Dispenser Connection Board Replacement
Turning off power at the dispenser switch in the electronics head does not turn off power to J8
on the connection board. See Warning at the beginning of this section.
1
Turn off power to the dispenser at the circuit breaker inside the building.
2
Disconnect cables at the top of the ISB, then raise and remove cover as shown in Fig 6.69.
3
On side B, remove the (2) 10 mm hex head screws that secure the ISB support bracket to
the vapor barrier.
4
Disconnect the bottom left cable and move ISB aside, away from the connection board. Fig
6.70.
5
Disconnect all cables from the connection board. Fig 6.71. Tag cables as necessary for re-
connecting.
6
Remove (6) 3 mm Allen screws. There are 3 screws on each end of the board. No screws in
the middle.
7
Lift board off retainer clips and remove. Fig 6.72.
8
Install replacement board properly on the retaining clips and re-secure with the screws.
132 WM048523 Rev 08 01/2019
6 Replacement Procedures