• Followtheinstallationchecklisttoverifyproperoperationuponinstallationandatthebegin-
ning of each pool season.
Maintenance
Water Chemistry
Always test water chemistry with a quality manual test kit. The HL-CHEM provides 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 periodi-
cally using the method 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 a 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 or spa 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 probes without running the Wizard, turn off input power to the OmniLogic. Disconnect
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.
Winterizing
The HL-CHEM probes must be protected from freezing conditions. If the pool is winterized, plan to
remove and store the probes (as described above) as part of the normal pool winterizing process.
The Probe Cell and related plumbing must be drained as well. BNC connectors should be capped
with the original protective covers. A winterizing kit with probe caps, BNC covers, and other neces-
sary winterizing accessories is available to replace any missing items. Contact your local Hayward
dealer for more information.
17
USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
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