10
Figure 7: Battery Replacement
4C. PLC Memory Backup Battery Replacement
(included with PLC option only)
1. On the top of the PLC, press the retaining clip on the battery door and swing the battery door open.
2. Remove the old battery from right side of the coin-type slot.
3. Install the new battery with the +, or flat, side out.
4. Close the battery door so that it locks securely.
5. Make note of the date the battery was replaced (it must be performed annually).
4D. Winterizing
If the pool will be shutting down for the winter months and the UV-C Pro will remain exposed to freezing temperatures, the
unit must be drained to prevent freeze damage to the wetted components. To drain the UV-C Pro, see the following steps.
1. If the UV-C Pro is mounted below the water level, isolation valves must all be CLOSED to prevent excess water from
draining into the unit.
2. Loosen main inlet and outlet fittings on the UV-C-Pro, this should allow most water to drain from the UV reactor(s).
3. Open the door and locate the drain plug(s) (Refer to Figure 4 ) and remove to drain the remaining water in the UV
reactor(s).
Battery
4. MAINTENANCE & SERVICE
