What model do you have? I'm not familiar with an "ozone-chlorinator". Chlorinators, yes. Ozonators, yes. But not ozone-chlorinators.

I'm sort of puzzled. One reason people selling ozonators try to keep chlorine levels low, is that otherwise, the chlorine will simply destroy all the ozone. Ozone and chlorine engage in mutual destruction reactions. But, you can't replace chlorine with ozone, because ozone is too toxic (MUCH more dangerous than chlorine gas) and too insoluble to use as a sanitizing residual. For this reason, US ozonators have VERY low output levels; European style ozonators, with much higher outputs, incorporate a de-ozonation state, for swimmer safety. By contrast, chlorine gas is freely soluble in water, and is severely irritating BEFORE it becomes dangerous.

The common practice in the pool industry is to take a product or method that has significant value in a limited application, and try to apply it everywhere:
+ UV irradiation has some application to INDOOR pools, and to public pools at high risk for amoebic infections -- but not on outdoor home pools.
+ Sodium bromide has some limited value to OUTDOOR pools with HIGH stabilizer levels, but no where else. But one chemical company tries to get it in ALL pools.
+ Phosphate removers can occasionally be helpful, but most pools don't need them.
+ Supplemental algicides are not needed on pools that maintain adequate chlorine levels, but pool stores sell them for use on EVERY pool.
+ Metal sequestrants can have a TEMPORARY value on pools that are removing or preventing stains, but have NO value for the majority of pools that have no metals.

. . . and ozone has some value in home spas, but has no value that we've been able to determine on outdoor home pools.