Monthly water-chemistry equipment checklist

Use this alongside the manufacturer's manuals for your specific controller and feed equipment. It does not replace daily testing and daily operation records required in New York.

Controller and sensors

• Compare controller pH and free chlorine (or ORP trend) against a fresh manual test; note the difference in your log.
• Inspect the flow cell for debris, scale, or air; clean per the manual.
• Inspect probes for coating or damage; clean and calibrate per the manual, and record the calibration.
• Confirm the flow switch or sensor actuates when sample flow is interrupted (feed should stop).
• Review alarm history for the month and note any recurring alarms.
• Confirm alarm notification recipients are current (staff changes happen).

Chemical feed

• Liquid systems: inspect tubing, check valves, injection point, and pump diaphragm; check for crystallization at the injection point.
• Erosion feeders (cal hypo): inspect and clean the hopper, spray nozzles, and solution tank per the manual; confirm briquette supply and storage conditions.
• Verify the feeder stops when the controller's demand output is off.
• Inspect chemical storage for segregation of incompatible chemicals, labeling, ventilation, and SDS availability.

Records and trends

• Review the controller's monthly trend for pH and sanitizer; look for daily patterns tied to bather load or HVAC.
• Confirm the daily operation record is complete for the month and retained on site (New York: 12 months).
• Note parts nearing service life (probes, pump tubes, flow-cell components) for the next visit.