FX-1000p Maintenance

The FX-1000p Amperometric Chlorine Analyzer is designed to operate continuously, 24 hours a day, 365 days a year. The system requires little routine maintenance other than changing the vinegar bottle as the vinegar buffering agent becomes depleted, and occasional calibration checks.

The sample cell of the analyzer has 150 PVC balls that are constantly rotated against the copper ring and gold electrode by a 120 rpm motor with a mixing arm attached to it. This action, combined with the natural cleaning action of the vinegar, provides automatic cleaning of the cell and sample consistency within the cell. The vinegar also provides the low pH condition (between 4.0 and 5.0) required for optimum chlorine residual readings.

A few applications may require more sample flow cell maintenance due to high suspended solids or high calcium levels in the sample liquid.

High suspended solids, such as those found in a waste treatment plant, may collect in the bottom of the cell or coat the copper electrode ring. This condition can be reduced or eliminated by installing a "flushing wye strainer" in the sample line just before it reaches the FX-1000p.

The strainer is particularly well suited for high suspended solids applications. It has a built-in flushing port that can be plumbed to a drain or back to the process. This type of flushing port can be left partially open to minimize cleaning intervals. The screened outlet of the strainer can then be plumbed to the sample flow cell.

High calcium levels in the sample can sometimes precipitate out on the copper electrode ring. The calcium buildup can be cleaned off with muriatic acid which is available at most hardware stores. (Use all applicable safety procedures when using any strong acid.) Any buildup on the copper electrode ring, including calcium, can be removed by polishing.