Hayward Sense and Dispense Installation And Operation Manual page 19

Installing the supply side tube fitting: Drill another 10mm hole on the supply side of the
pool plumbing shown in the diagram on page 4 and install the remaining tube fitting. Run flex
tubing from the fitting to the effluent Probe Cell port. Push the flex tubing all the way into the
pressure fitting to seat into port.
Cut a 8cm length of flex tubing and insert it into the sample stream port. This port can be used
to draw water samples if needed. If flex tubing needs to be replaced, use only 8mm UV-resistant
cross-linked polyethylene tubing (PEX).
Installing ORP and pH probes to the Probe Cell
The ORP and pH probes are shipped "wet" in plastic storage caps. It's very important that
the probes remain wet at all times. If the probes are allowed to dry out, they will fail and the
Sense and Dispense™ will be ineffective. After installation, the Probe Cell will ensure that the
probes are constantly exposed to pool water. During periods when the filter pump is off (even
extended periods), there should be sufficient moisture remaining in the Probe Cell to ensure
that the probes are protected.
Remove the ORP and pH probes from their plastic storage caps and save the caps for future
use. To ensure that the probes continue to remain wet, fill the Probe Cell with pool water before
installing the probes. Apply a length of plumber's tape to the probe threads. Hand-tighten the
probes only. At startup, check for leaks. If the probes leak, do not tighten more—instead
remove and re-apply new Teflon tape.
Wiring the probes to the Probe Cell
Both probes must be wired to the communication box within the Probe Cell. The probe cables
use typical BNC connectors that attach to the designated connectors on the communication
box. Refer to the label on the communication box for the appropriate connections. Push the
connectors in and turn clockwise until locked. After connecting, route the wires in a manner
where they will not interfere with the door of the Probe Cell. Save BNC connector protective
covers for future use.
ORP
Probe
pH
Probe
Apply Teflon
plumber's tape
to threads
5