HP 403349-003 - Manual (Page 98)

Removal and replacement procedures 98
4. Using an 8 mm socket, remove the two 8 mm nuts and washers securing the water group controller
bracket to the water group controller chassis.
5. Disconnect the two large electrical cables from the back of the water group controller.
6. Disconnect the green and yellow grounding wire securing the water group controller to the water
group controller chassis.