IPS Controllers M720 User manual

M720 pH/ORP Controller
Owner’s
Manual
ipscontrollers.com
pH
Dose
Alert
Dose
Alert
ORP mV
FlowAuto pH ORP
IPS-M720
AC PowerpH ORP Flow
pH
ORP
Up
MODE
Down Set
Level
Dose
Time
Delay
Time
pH
Cal

Table of Contents
I. Introduc on page 2
A. Water Chemistry page 2
B. Safety page 3
C. System Components page 4
D. Speci ca ons page 7
E. Controller Panel Descrip ons page 8
F. Electrical Descrip ons page 10
II. Installa on page 11
A. Setup page 11
B. Tools page 11
C. Procedure page 11
III. Opera on page 14
A. Startup and Shutdown page 14
B. Modes and Adjustments page 15
C. Maintenance page 23
IV. Troubleshoo ng page 25
V. Warranty page 28
1

I. Introducon
A. Water Chemistry
Water chemistry is a complex science that contains many variables.
These variables not only aect the water environment itself, but
they can have adverse eects on your equipment as well as your
health. These are only some of the factors which we follow closely
to ensure the most healthy water interacons:
pH is the measurement of the acidity or basicity in an aqueous
soluon. A measurement below 7 is considered acid, while a
measurement above 7 is base or alkaline. It is a signicant factor
in determining the water quality as it aects sanizer levels, water
color, and human reacon to the water.
ORP (Oxidaon Reducon Potenal) is the measurement of the
oxidizing capacity present in water. ORP cannot be fooled by the
eects of pH, total dissolved solids (TDS), stabilizers, and non-
chlorine oxidizers. A typical ORP sensor measures Hypochlorous
Acid (HOCI), which is the more eecve component of free
chlorine. A higher ORP reading equates to the sanizer working
more eecvely.
Water balance is comprised of pH, calcium hardness, total
alkalinity, temperature, and TDS. When water is balanced, the
Langelier saturaon index is 0. Values above +0.3 lead to scaling
and cloudy water, while values below -0.3 can cause corrosion of
pool equipment and surfaces. If the water balance is not xed in
a mely manner, secondary eects can lead to rapidly declining
water condions that can aect the health of the water occupants.
pH and ORP work conversely to one another, and are aected by
other factors such as temperature and TDS’ that can increase the
negave impacts of unbalanced water.
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M720 pH/ORP Controller Owner’s Manual

B. IMPORTANT SAFETY INSTRUCTIONS
1. READ AND FOLLOW ALL
INSTRUCTIONS.
2. Risk of electric shock: Connect the controller to a dedicated
ground-fault circuit interrupter (GFCI) circuit breaker.
3. Disconnect power before servicing the controller.
4. Inspect all power cords frequently. Any damaged cords should
be replaced immediately to reduce the risk of injury by shock.
5. Always maintain a record of manual water chemistry readings
using an accurate test kit.
6. WARNING — To reduce the risk of injury, do not
permit children to use this product unless they are closely
supervised at all mes.
7. Danger — Risk of injury.
a. Replace damaged cord immediately.
b. Do not bury cord.
c. Connect to a grounded, grounding type receptacle only.
8. WARNING — Risk of electric shock. Install at least
5 feet (1.5m) from inside wall of water enclosure using non-
metallic plumbing.
9. Operaon of this controller without a funconing ow-switch
will void the NSF Cercaon.
10. WARNING — Do not install this controller where it is
accessible to the public.
11. SAVE THESE INSTRUCTIONS.
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M720 pH/ORP Controller Owner’s Manual

C. System Components
1. IPS M720 pH/ORP Controller
a. Allows automac monitoring of pH and ORP levels through
a simple, user-friendly interface, resulng in easier
management of water balance in swimming pools, spas, or
circulang water environments.
b. Can be easily installed into your exisng pool environment
and equipment, or can be customized to your needs.
c. Monitors and displays the pH and ORP levels using LEDs
and digital readouts on the front panel.
In addion, ve separate funcon buons allow simple
pushbuon control of these individual parameters:
1) Mode - Auto or pH Standby (programming),
2) Set Level - pH level to be maintained,
3) Dose Timer - Timed or Connuous feed modes,
4) Delay Time - Delay period aer each Dose Time,
5) pH Cal - pH calibraon.
d. When the pH level rises above (acid feed) or falls below
(base feed) the set level, the controller will acvate the
chemical feeder for the set dose me. Then the set delay
me will occur. This dose and delay me will occur unl
the set level is reached.
e. When the ORP (sanizer) level reaches the set level, the
controller will acvate the chemical feeder for the set dose
me. Then the set delay me will occur. This dose and
delay me will occur unl the set level is reached.
2. Flow Cell with Flow Switch
a. An injecon-molded ow cell with integrated ow-switch
houses the pH and ORP sensors, and partners with the
M720 controller to monitor the pH and ORP levels in the
water.
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M720 pH/ORP Controller Owner’s Manual

b. The ow switch veries that water is owing during a feed
cycle, and sends the controller instrucons to deacvate
the feed if water is not owing.
c. Operaon of this controller without a funconing ow-
switch will void the NSF Cercaon. Rounely check that
the ow-switch is funconing by closing the le valve on
the boom of the ow-cell (ow light should turn o).
3. pH and ORP Sensors
a. pH Sensor – standard (Use only IPS Controllers part # SXPH
to maintain NSF Cercaon)
b. ORP Planum Sensor – standard (Use only IPS Controllers
part # SXORP to maintain NSF Cercaon)
c. ORP Gold Sensor - for use with Salt Chlorine systems
(Use only IPS Controllers part # SXORP-G to maintain NSF
Cercaon)
4. Fings – for tapping installaon of ow cell input/output
5. In-line Filter – installed prior to ow cell to protect ow switch
and sensors
6. Tubing – 25 feet of 3/8” for providing ltered water to and from
the ow cell
7. Mounng Board – ABS plasc with mounng holes and
stainless hardware (16” x 12” standard, 24” x 19” oponal)
8. Chemical Feeders – peristalc pumps for pH and ORP control
(purchased separately)
5
M720 pH/ORP Controller Owner’s Manual

Figure 1: This is a typical installa on using IPS’ system package, which consists of an
M720 pH/ORP Controller,  ow cell with switch, and two pumps mounted on the large board.
6
M720 pH/ORP Controller Owner’s Manual
Chemical
Pump
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1  3  5 6 7 8
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IPS Parts List


ipscontrollers.com
pH
Dose
Alert
Dose
Alert
ORP mV
FlowAuto pH ORP
IPS-M720
ACPowerpH ORP Flow
pH
ORP
Up
MODE
Down Set
Level
Dose
Time
Delay
Time
pH
Cal

D. Specicaons
Enclosure: 6.375”L x 4.75”W x 3.5”D (Note: Mounng board
dimensions are 16”L x 12”W x 0.25”D)
Electrical Input/Output: 110/230 VAC, 50 - 60 Hz
pH Set Level: 7.0 to 8.0
ORP Set Level: 400 mV to 900 mV
Dose Time: O, Connuous, or Timed cycle
High Alert: pH default of 8.0, ORP default of 900
Low Alert: pH default of 7.0, ORP default of 100
Readout: Funcon LED and numerical digital displays
Alarm: Red alert LEDs
7
M720 pH/ORP Controller Owner’s Manual

E. Controller Panel Descrip ons
1. Digital Displays and Func on LEDs
a. pH
1. Alert - red LED
2. Dose - green LED
b. ORP
1. Alert - red LED
2. Dose - yellow LED
Figure 2: M720 Controller Components Connec ons
8
M720 pH/ORP Controller Owner’s Manual
Electrical
Flow Cell
digital display
pushbutton
LEDs
Controller Communication
ipscontrollers.com
pH
Dose
Alert
Dose
Alert
ORP mV
FlowAuto pH ORP
IPS-M720
AC PowerpH ORP Flow
pH
ORP
Up
MODE
Down Set
Level
Dose
Time
Delay
Time
pH
Cal

2. Mode - pushbuon adjustments
a. Auto - red LED
b. pH standby - green LED
c. ORP standby - yellow LED
d. OFF mode - In standby, press and hold Mode buon for 3
seconds to turn controller o.
3. Flow - green LED
4. Up/Down buon to adjust the following:
• Set Level
• Dose Time
• Delay Time
• pH Cal
5. Electrical Connecons (peripherals)
a. pH output (le receptacle) - max. 5 amps @ 110/230 VAC
b. ORP output (right receptable) - max. 5 amps @ 110/230
VAC
c. AC power - 110/230 VAC, 50-60 Hz
d. Flow - from ow cell
e. pH sensor - BNC connecon
f. ORP sensor - BNC connecon
9
M720 pH/ORP Controller Owner’s Manual