Timmie,

Let me preface this by saying as we don't know exactly what brand, make, model or design of chlorinator I'm assuming a few things about it .

Since it's a "new" chlorinator could you have assembled it incorrectly? I'm not trying to be insulting, it's just that I've seen it done, and done it myself a few times. Left becomes right, in becomes out, for just a split second, and BAM the thing won't work. Leaving you scratching your head and not seeing the obvious. I've done it.

If it's a typical Hayward dial type, there's not much assembly but there's some small details that can be overlooked.

Did you install the fittings incorrectly if its an "offline" unit. There's a check valve and an adapter. They look similar and have the same threads. The check valve or "inlet valve" should go on the side of the unit that is receiving the water to prevent it from letting chlorine back into your system. Is this inlet valve backwards? It can be in the correct location (side of unit), but in backwards as to not let proper water pressure into the unit. The adapter goes on the outbound side, and usually doesn't have any type of "valve" function. Check the arrow indicators on the body of the unit itself for flow orientation. Some where on it, should be the word "FLOW" with arrows associated with it.

Is it plumbed in with the correct orientation for the "Flow"? Somewhere on the body of the unit itself there should be arrows indicating which way the flow is going, is it backwards? If it's an "inline" one this could be a pain to reverse, but offline it's a simply undoing the "tube" connections and reversing it.

If it's an "offline" did you take the inbound feed from a "pipe" that was on the pressure side of the pump? Not a suction side.

I never recommended filling these things chuck full of pucks. Unless your going away on vacation and leaving the pool unattended . The chlorine levels tend to get far too high inside them if the ratio of water to pucks is too lopsided. It makes things brittle faster and can build pressure if your not careful. It also makes them rather dangerous when opening , due to potential pressure and the concentration of chlorine levels. Half full is fine, and then adjust the dial accordingly because the concentration is going to be less.