I have just put a Waterways above ground in line chlorinator into the hard plumbing on my pool. I am getting no chlorine going into my pool. I have open the canister and taking a chlorine test and it is off the charts inside the canister. Appears that, something is stopped up? I am getting good flow out of my return, but no chlorine in the pool. It is brand new. Is that possible that the check valve or the elbow is stopped up? I have the dial turned to max output.