A: Based on question four also, the IR is out of calibration. Rezero the IR with zero gas and Respan the ir with 1%CO2 gas. The analyzer will then need to be liquid calibrated. Perform a liquid zero when the reading is stable and take note of the IR reading (which should be less than 1000). Perform a liquid span when the reading is stable and take note of the IR reading (which will probably be between 8000 and 11000).
If the analyzer does not maintain span when in calibration, but does when running sample, verify there are no leaks in the autocal valve system. (Either liquid leaking out or air bubbles leaking into the tubing. Another test would be to have span gas go directly to the IR and see if TOC readings fluctuate.
