Close inlet and outlet.
Open drainage valve.
Remove the air valve to prevent vacuum and allow faster drainage.
Remove the top cover and lift out the magnet.
Loosen the flange carefully lift it. The anodes are located on the underside of the flange.
Inspect the anodes and clean them if necessary. Replace the anodes if they are significantly reduced and have a rough surface. The anodes are screwed firmly into the insulation screw. This must be held in place and not twisted around.
Remove the retaining clip for the filter.
Lift out the filter, rinse it and clean it.
Clean the inside of the tank with a hose or pressure washer.
After everything is done, reattach the filter, anodes, and flange.
Fill the Protector from the inlet.
When there is no more air coming out of the air vent, you can open the return valve. This should start the circulation.
Check the water meter and record the reading in a log.