IPS Controllers M920 Owner's Manual page 7

M920 & M920W pH/Dual ORP Controller Owner's Manual
2. Flow Cell with Flow Switch
a. An injection-molded flow cell with integrated flow
switch houses the pH and ORP sensors, and partners with
the M920 controller to monitor the pH and ORP levels in
the water.
b. The flow switch verifies that water is flowing during a feed cycle,
and sends the controller instructions to deactivate the feed if
water is not flowing.
c. Operation of this controller without a functioning flow-switch
will void the NSF Certification. Routinely check that the flow-
switch is functioning by closing the left valve on the bottom of
the flow-cell (flow light should turn off).
3. pH and ORP Sensors
a. pH Sensor – standard (Use only IPS Controllers part # SXPH to
maintain NSF Certification)
b. ORP Platinum Sensor – standard (Use only IPS Controllers part #
SXORP to maintain NSF Certification)
c. ORP Gold Sensor – for use with Salt Chlorine systems (Use only
IPS Controllers part # SXORP-G to maintain NSF Certification)
4. Fittings – tubing connectors (2) for tapping installation of flow cell
input/output
5. In-line Filter with 2-way valves and mounting clamps (2)
6. Tubing – 25 feet of 3/8"
7. Mounting Board – ABS plastic with mounting holes and stainless
hardware (16" x 12" standard, 24" x 19" optional for mounting two
chemical pumps)
8. Temperature Sensor – Senses the current water temperature and
displays the temperature in the display when in Temp mode.
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