Water Chemistry; Probe Maintenance; Probe Storage - Hayward Sense and Dispense Installation And Operation Manual

Maintenance

Water Chemistry

Always test water chemistry with a quality manual test kit. The Sense and Dispense™ pro-
vides instrument grade accuracy which exceeds that of most liquid-standard water testing kits.
Therefore, it may be preferable to calibrate pH using commercially available reference solutions.
Calibrate pH periodically using the pH Calibration Wizard as described earlier in this manual.
It's important to note that changes in pH, cyanuric acid concentration, total dissolved solids,
and use of additional or alternative sanitizers will all affect the primary sanitizer residual level
relative to ORP. Maintain total alkalinity on regular basis to ensure pH stability. To maintain a
consistent sanitizer residual in parts per million (ppm), periodically adjust the ORP level.

Probe Maintenance

The probes must be clean and free from oil, chemical deposits and contamination to function
properly. After saturation in pool water, the probes may need to be cleaned on a weekly or
monthly basis depending on bather load and other pool specific characteristics. Slow response,
increased need to calibrate pH, and inconsistent readings are indications that the probes are in
need of cleaning.
To clean the ORP and pH probes, run the Clean Probe Wizard within the Settings Menu on the
AquaRite Pro. This Wizard will walk the user through the probe cleaning process. Answer the
questions when prompted, and follow the instructions for proper cleaning.
To clean the probes without running the Wizard, turn off input power to the AquaRite Pro. Dis-
connect the probe connectors from the communication box, unscrew the probe and carefully
remove them from the Probe Cell. Clean the reference junction (the white ring at the bottom of
the probe body) with a soft toothbrush and regular tooth paste. A household liquid dishwashing
detergent may also be used to remove any oil. Rinse with fresh water, replace Teflon tape on
threads and reinstall probes. If properly cleaned probes continue to provide unstable readings
or require excessive calibration, the probes should be replaced.

Probe Storage

Exposure to atmospheric conditions will cause the probe tips to dry out. Store the probes with
the included plastic probe storage caps if removed from the Probe Cell for more than one hour.
If the storage caps have been misplaced, store the probes individually in small glass or plastic
containers with clean water covering the probe tips. Store probes in a location that will not be
subjected to freezing temperatures.
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