IPS Controllers M720 - Operati; Startup and Shutdown

III. Operaon
A. Startup and Shutdown
1. Startup
a. Plug M720 power cord into power outlet. For outdoor
installaons, ensure the use of a waterght outlet cover.
b. Turn on the lter pump and verify the water ow through
the ow cell by opening the sample port valve (center)
and observing a steady stream of water. The right side
valve may need to be parally closed to produce a steady
stream. Note: Water should pass over the pH and ORP
sensors for a minimum of 10 minutes to allow for
accurate, stable readings of pH and ORP levels from the
pool or spa.
c. Check for leaks and repair if necessary.
d. Manually adjust and balance the pool or spa water to
acceptable ranges using a DPD-based test kit.
e. Verify that the green Flow LED is illuminated. Both the pH
and ORP dose outputs are disabled if there is no water
ow.
f. Press the Mode pushbuon momentarily to place the
controller into the pH standby mode. The green pH standby
LED will illuminate. Select the desired pH set level and dose
me (connuous or med). Please call us at 877-693-6903
for assistance with inial sengs.
g. While sll in the pH standby mode, press the pH Cal
pushbuon to calibrate the reading to the value observed
through the manual tesng of the water. Note: Always
calibrate using water from the sample port of the ow
cell.
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M720 pH/ORP Controller Owner’s Manual