Pro-Aqua PRO+RO Series Troubleshooting guide

PRO+RO SERIES
USER & SERVICE MANUAL
www.proaquawater.com.com
Professional Water Filtration Systems

- 2 -
Introduction / System Specications ...............................................................................................3
1. Principles of Reverse Osmosis ....................................................................................................4
- Reverse Osmosis Process ............................................................................................................4
- Semipermeable membrane ......................................................................................................4
- Factors aecting membrane service life ..............................................................................4
- Reverse Osmosis System Terms and Definitions ..............................................................4
- Feed Water requirements ..........................................................................................................5
2. Identifying System Components ............................................................................................. 5
3. Pre Installation References .......................................................................................................... 7
4. Reverse Osmosis System Installation ......................................................................................7
5. Membrane Installation ..................................................................................................................7
6. Controller programming ...............................................................................................................8
- Controller screen............................................................................................................................8
- Navigation and Programming Menu ....................................................................................8
- Controller Programming ............................................................................................................8
- Information displayed on screen ............................................................................................9
- Settings Parameter .......................................................................................................................9
- Cable connection identication .......................................................................................... 10
- Calibration of TDS sensor ....................................................................................................... 10
- Control box features ................................................................................................................. 10
7. Start-Up ............................................................................................................................................ 11
- Initial tests ..................................................................................................................................... 11
8. Troubleshooting Guides ....................................................................................................12 - 13
9. Reverse Osmosis Pre-Treatment ............................................................................................. 14
Warranty .................................................................................................................................................... 15
WARNING! READ ENTIRE MANUAL COMPLETELY. FAILURE TO FOLLOW ALL GUIDELINES COULD
CAUSE PERSONAL INJURY OR PROPERTY DAMAGE.
REVIEW AND FOLLOW LOCAL LAWS REGARDING PLUMBING INSTALLATION OF THIS EQUIPMENT.
WARNING! DO NOT USE WITH WATER THAT IS MICROBIOLOGICALLY UNSAFE OR OF UNKNOWN
QUALITY WITHOUT PROPER DISINFECTION BEFORE OR AFTER THE EQUIPMENT.
NOTE: Failure to comply with these instructions will void equipment warranty and the installer will be responsible for service,
damages and repairs.
TABLE OF CONTENT
!
!
!

- 3 -
INTRODUCTION
Water is an important part of all process applications. In order to
always provide the highest quality of water to the end consumer,
we must make sure to have all the required parameters for
each application. Correct information is important in order to
safeguard the welfare of consumers when it comes to water
quality for food processing, beverages or whatever the nal
application may be. Proper selection of treatment technology
must be evaluated in a case by case basis.
The physical, chemical and microbiological characteristics of
water vary from one source to another. Proper water analysis is
important in order to know the unique parameters of the water
to be treated. Remember that water is a universal solvent and
each water supply has dierent quality characteristics.
It is worth mentioning that in water analysis: dissolved solids (ions
or dissolved minerals) whose concentration determine water
salinity is measured as TDS (total dissolved solids) or electrical
conductivity. Suspended solids and colloids are the ones that
give the characteristics of water turbidity. Organic components
and micro-biological and other chemical parameters such as pH,
dissolved gases, hardness, silica and dissolved metals are equally
important to determine the quality of incoming water to any
water conditioning process.
PRO+AQUA PRO+RO Series Reverse Osmosis systems
have been designed and tested to provide high quality
water and have been built with quality components
that provide you not just high grade water, but also
gives you full condence in its operation and durability.
SYSTEM SPECIFICATIONS
PRO+RO Series Models:
MODEL: PRO-RO-II PRO-RO-IV PRO-RO-VI PRO-RO-VIII PRO-RO-XIV
PRODUCTION
(GPD) 2,100-2,400* 4,200- 4,800* 6,300-7,200* 8,400-9,600* 14,400-15,600*
MEMBRANE 4” x 40”(1) 4” x 40” (2) 4”x 40”(3) 4”x 40”(4) 4” x 40”(6)
PRODUCT
(GPM) 1.45 - 1.6 2.9 - 3.2 4.3 - 4.8 5.8 - 6.4 10 - 10.8
FEED FLOW
(GPM) 5 8 10 20 25
% RECOVERY 50-60 % 50-60% 50-60 % 50-60 % 50-60 %
HIGH
PRESSURE
PUMP
1.5 HP 1.5 HP 1.5 HP 3.0 HP 3.0 HP
INLET PORT 3/4" 3/4" 1” 1" 1”
PRODUCT
OUTLET PORT 1/2" 1/2" 3/4" 3/4" 1”
WASTE
OUTLET PORT 1/2" 1/2" 3/4" 3/4" 1”
SYSTEM
DIMENSIONS 20”x 20”x 47” 20”x 20”x 47” 25”x 20”x 47” 25”x 20”x 47” 50” x 30” x 50”
WEIGHT
(LBS) 176 187 218 242 270
ELECTRICAL
POWER SUPPLY 120 or 220 V 120 or 220 V 120 or 220 V 220 220
* The system production rate is based on minimum feed water quality below 1,000 PPM, feed
water temp 77 °F, and SDI < 5. Use a suitable pretreatment capable of removing all membrane
damaging substances.
If you purchased any of these systems with some variation or special design and it is not described
in this manual, please contact us indicating the corresponding serial number.
Please read the information contained in this manual before starting operation of the reverse
osmosis system. Any misapplication could void the warranty or cause equipment damage.
INSPECTION & PREPARATION
THIS REVERSE OSMOSIS SYSTEM IS DESIGNED FOR WATER PURIFICATION PURPOSES ONLY.
THIS REVERSE OSMOSIS SYSTEM MUST BE PROTECTED FROM NATURAL ELEMENTS.
RAIN AND EXPOSURE TO UV RAYS CAN CAUSE PERMANENT DAMAGE TO THE SYSTEM.
EXPOSURE TO VERY HIGH HUMIDITY MAY CAUSE DAMAGE TO PUMP MOTER
AND ELECTRONIC CONTROLS.
!
!
!

- 4 -
Principles of Reverse Osmosis Technology
How the Reverse Osmosis process works?
Reverse Osmosis (RO) is a process in which water is forced to pass
through a semipermeable membrane by pressure.
As the water passes through the membrane dissolved particles
are rejected by themembrane in its spirallayers ofsemipermeable
material formed around a central perforated tube.
Semipermeable membrane
The reverse osmosis system uses the properties of a microporous
membrane that works as an ecient particulate lter up to the
size of chemical molecules or ions.The rejection of these particles
is compared to molecular weight and ionic charge. For example,
we can expect a 90% rejection of sodium chloride, which means
that the product passing through the membrane will have
a concentration of about one tenth of the incoming water.
The rejection of calcium carbonate (hardness) will be about
95%, while most of the salts will be rejected approximately
98% to 99%.
Ion rejection or organic material is basically done by mechanical
ltration. Most substances with molecular weight of more than
100 will be completely rejected by the membrane. Particles with
very low molecular weight such as formaldehyde or free phenol
can pass through the membrane (RO), like most dissolved gases.
Disposal of unwanted particles is accomplished by constant ow
of water that is circulating, making the function of rinsing the
membrane, which prevents saturating surface and reduces the
tendency to form scale.
Pressure Vessel
Fiberglass
Membrane Shell
Permeate Tube
Feed Water
Membrane Element
Adhesive
Permeate
Carrier
Fabric
Backing
Feed Spacer Concentrate
Permeate
Membrane
Factors that aect the operation and life of the
membrane
There are ve main factors aecting
the reverse osmosis membrane:
1. Pressure: Excessive pressure may deform and compress the
membrane which can cause decrease water production.
2. Hydrolysis: It is a chemical reaction of water that aects the
membrane. This happens when the water temperature is very
high and the pH is below 2.5 or above 7. To avoid this, keep the
pH between 5 and 6.
3. Bacterium: The presence of bacteria deteriorates the surface
layer of the membrane and reduce the ability of the membrane
to reject salts.
4. Temperature: Avoid temperatures above 95 ° F (35 ° C) to
avoid damaging the membrane structure.
5. Saturation: These are salts (calcium carbonate, etc.) that are
precipitated on the membrane. These salts clog the pores and
channels reducing the amount of water produced.
Temperature in reverse osmosis units:
The units are designed for a temperature of 77 ° F (25 ° C). The
production ow is reduced at low temperatures. On average
membranes lose at least 1.8% of production for each degree
below 77 ° F.
Some common terms and denitions
related to reverse osmosis
Incoming (feed) water - Pre-ltered and softened water
introduced to the reverse osmosis modules.
Product Water - Puried water produced by reverse osmosis
membranes.
Water Concentrate (rejection) - High waste containing water
(reject) that goes directly to the drain.
Membrane – Internal semipermeable element core of your
reverse osmosis system.
Module - is the complete membrane inside a pressure vessel
GPD (Gallons per day) - Unit of measure which determines the
water production of the membranes. Example: A system1,000
GPD reverse osmosis will produce 1,000 gallons of pure water in
a 24 hour period (maximum working 24 hours / day).
PPM (Parts per million) - Method used to measure the quality of
water in the reverse osmosis.
Percentage Recovery - The amount of water recovered
through the membranes. Example: If you enter 100 gallons of
water into the membrane, and produce 60 gallons of clean water
to 40 gallons of reject water, this means the RO System has a
60% recovery.
Percentage Rejection - The amount of salts and chemicals
rejected or removed by reverse osmosis membranes.
1
PRINCIPLES OF REVERSE OSMOSIS

- 5 -
Feed Water Requirements
TYPICAL EXPECTED ION RETENTION
IN A TFC MEMBRANE TYPE:
Typical Expected Ion Retention In A Tfc Membrane Type
Sodium 85-94 %
Lead 95-98 %
Sulfate 96-98 %
Arsenic 92-96 %
Calcium 94-98 %
Magnesium 94-98 %
Potassium 85-95 %
Nickel 96-98 %
Nitrate 60-75 %
Fluoride 85-92 %
Iron 94-98 %
Manganese 94-98 %
Zinc 95-98 %
Cadmium 95-98 %
Mercury 95-98 %
Barium 95-98 %
Selenium 94-96 %
Cyanide 84-92 %
Phosphate 96-98 %
Chloride 85-92 %
WATER SUPPLY REQUIREMENTS:
Typical Retention Of A Reverse Osmosis Membrane
Temperature 8-27 C
Hardness < 20 PPM
Residual chlorine 0 PPM
Tds < 1000 PPM
Ph 3 A 11
Iron < 0.01
Silica < 10 PPM
Manganese < 0.05 PPM
Inlet pressure 30-60 PSI
SYSTEM COMPONENTS
1. PREFILTER PRESSURE GAUGE: Glycerin lled pressure gauge
(0-100psi). Standard on all units and is located on the front of the
panel.This gauge measures the water pressure in PSI at the outlet
of the pre-lter, a minimum pressure of 30 PSI is recommended
2. SYSTEM PRESSURE GAUGE: Glycerin lled pressure gauge
(0-300psi). Standard in all units. Located in front of the panel and
senses the pump pressure discharge. This gauge measures the
pressure of water in PSI which is applied through the membrane.
(Maximum recommended operating pressure is 180-200 PSI,
depending on the type of membrane).
The operating pressure of the system can be adjusted by
regulating these combined valves:
- Turning waste valve handle to the right the pressure increases;
turning the valve handle to the left pressure will decrease.
CAUTION! Do not close this valve completely.
- By adjusting the recirculation valve located next to the
waste valve above. Turn right to increase pressure and close
recirculation ow or turn the handle to the left to decrease
pressure and open recirculation ow.
3. CONCENTRATE WATER FLOWMETER (WASTE): Located on
the front of the panel, this meter is calibrated in gallons per
minute. Its purpose is to measure the amount of waste water that
the system is producing.
4. PRODUCT WATER FLOWMETER (PERMEATE): located on
the front panel, its purpose is to measure the amount of product
water in gallons per minute.
5. RECIRCULATION FLOW METER: Located on the front panel,
its purpose is measure the amount of waste water that it returns
to feed the system and is blend with raw water.
6. REVERSE OSMOSIS MODULE: It consists of a membrane
housing and the membrane. The assembly is placed vertical on
TRITTON PRO+RO models.
7. WASTE VALVE: This valve is located on the front panel. Its
purpose is to restrict the ow of water concentrate leaving the
module, it creates the necessary pressure inside the module
so that water is forced into the membrane creating the reverse
osmosis eect.
2
!
PRINCIPLES OF RO &
IDENTIFYING SYSTEM COMPONENTS

- 6 -
Turning the valve knob will control the ratio of water
discharged / water produced.
- Turning clockwise will increase pressure inside of the module and
reduce the amount of waste water.
- turning counterclockwise pressure will decrease within the module
and increase the amount of waste water.
CAUTION! Keep in mind the recovery (product / rejection)
suggested by your dealer based on water analysis done.
CAUTION! Waste valve should never be completely shut.
WARNING! Do not exceed the recommended pressure
of membrane parameters.
8. RECIRCULATION VALVE: This valve is located on the upper
front panel. Its propose is to adjust the amount of waste
water that recirculates into the feed water of the system.
It is used to refine and adjust pump pressure. You should
be careful of the characteristics of the incoming water, not
to exceed the rate of salinization with imbedded tendency
such as calcium, magnesium, silica and avoid membrane
fouling problems.
9. THROTTLING VALVE: located on the output of the high-
pressure pump, it is used to adjust supply pressure and ow.
Depending on the type of membrane used it adjusts flow
and pressure.
10. PRE-FILTER: This filter is a 5-micron pre-filter. It is used
to remove any particles that may have passed through
pre-treatment or released by pretreatment materials. If the
cartridge is dirty it can cause loss of pressure. See Reverse
Osmosis Pretreatment section on page 11 to nd out the kind of
lter that is recommended.
NOTICE: Never use this lter as the only way
of Pretreatment for your reverse osmosis system.
11. HIGH PRESSURE PUMP: This creates high pressure for
proper reverse osmosis operation. This pressure is adjusted by
the waste valve and the recirculation valve.
CAUTION! Never use the pump without water.
12. CONTROL BOX: The Reverse Osmosis system is designed
to be automatically operated by an electronic control. The
Controller monitors the operation parameters of the system and
sends continuous information to the screen.
In addition, the system has security features integrated into its
design to protect components and continuously monitor the
quality of product water produced.
Pump Motor overload - Amperage surges are addressed by
a thermal relay located on the starter installed for the high-
pressure pump.
Start Timer delay - The start delay or pump start delay
is 10 seconds. This helps detect potential problems with the
solenoid valve or voltage spikes.
Low Pressure Switch - Protects the high-pressure pump to not
operate without water, detects no or low pressure in the system
and immediately shuts down the system and sends a notice to
the screen. Low pressure switch is activated at 10 PSI.
Tank Level Switch - Installed in the product water storage tank.
It controls the level and sends a stop signal to the system when
tank is full to prevent overow.
Product Water Quality Sensor - The system has an integrated
TDS sensor for monitoring water quality and is constantly visible
on the control screen. The TDS sensor can be read in PPM and can
be set to trigger an alarm if water quality is abnormal.
Fast Flush - The system can be enabled (optional) for an
automatic ush to be performed every 2 hrs. (time can be varied
in programming). If programmed a solenoid opens, the system is
depressurized for the selected amount of time and waste water
is purged to help protect the system from fouling membranes.
13. INLET SOLENOID VALVE: Normally closed solenoid
valve (NC). This valve is located on the feed side of the pressure
pump. Its purpose is to stop the water supply when the unit is
not operating. If the power fails, this valve will close.
!
!
!
!
!
IDENTIFYING SYSTEM COMPONENTS

- 7 -
PRE INSTALLATION REFERENCES
Inlet Feed Water - enters through the pre-filter housing. The
housing connection is ¾ "or 1" depending on the model. We
suggest system connections are made preferably with PVC
SCH 80 or SCH 40.
Outlet Product Water - On PRO+RO systems, the permeate
water output exits through the product water flow meter.
through the back of the system.
Outlet Waste Water - On PRO+RO models, waste water or
concentrate exits the reject water owmeter through the back
of the system.
Control Box Power and Voltage Connections - The PRO-RO-
II and PRO-RO-III are supplied with standard 120 volt, single
phase connections. In situations where the customer species
otherwise, there may be changes in this regard. All systems must
be installed in accordance with local regulations.
All PRO+RO Commercial RO Systems use a 120V, single-phase
voltage in the control box and can be converted to
220V. PRO-RO-VIII and PRO-RO-XIV
models come in 220V and cannot be
converted to 120V.
Switch and Product Water Level Connections in the Storage
Tank - The cable connections of the liquid level switch are
located directly on the top side of the electrical control box.
The two wires are connected together with the level switch
cables. When the switch is closed, the reverse osmosis system
is switched on. When the switch is open the reverse osmosis
system is switched o.
It is extremely important to make sure you know
all regulations pertaining to local, building,
electrical and plumbing parameters of the site
where you are installing the system.
4
REVERSE OSMOSIS SYSTEM INSTALLATION
INSTALL FOLLOWING THESE STEPS:
1. Choose a place that is covered and has enough space for the
system. The location should also have feed water, electricity and
a specied area for drainage. It is not recommended to install
the system in an area exposed to the elements.
- Start by connecting all water connections to the system
and its pre-treatment.
2. Install the filter inside the housing or make sure it’s inside
the housing.
Recommendations how to insert membranes into the SS housing:
- To insert the membrane in the SS housing it is recommended
to remove the cap from the housing, instead of disconnecting all
the quick connections and tubing.
- When installing the RO membrane, make sure to look at which
direction the arrow is pointing (indicates feed water ow); and
where the brine seal will be located.
- When the arrow is pointing up it is recommended to remove
both housing caps.
- Then remove the brine seal from the membrane and insert the
membrane thru the top of the SS housing (without brine seal).
- Once the membrane reaches the bottom of the housing,
re-insert brine seal on to the membrane. And then, when the
brine seal is in the correct orientation, slide the membrane up
into the housing. Re-install lower and top caps and clamps.
- When installing the membrane with the arrow pointing down,
just remove top cap and clamps.
- Slide membrane down until it seats in the lower cap, in this case
no need to remove brine seal. Re-install top cap and clamp.
3. Install the membrane(s) in the membrane housing(s). The
membrane housings have an arrow indicating the direction
of flow. The seal of the membrane should always be
installed in the same direction of the water inlet.
(See diagram below, chapter V of this manual).
4. Open the recycling and rejection valves completely.
5. Make all electrical installations including the storage water
tank level switch. Make sure the system is connected to an
independent designated main breaker.
5
MEMBRANE INSTALLATION
Membrane seal should always be Installed
in the same direction as the ow of incoming water.
*Note the direction of the membrane seal in the following diagram.
3
!
!
PRE INSTALLATION REFERENCES &
REVERSE OSMOSIS SYSTEM INSTALLATION

- 8 -
PROGRAMMING THE CONTROLLER
NAVIGATION AND PROGRAMMING MENU:
SET key, is access to settings mode
UP key increases the setting values
DOWN key decreases the setting values
Main screen: Displays the operating status:
FLUSH Activated) - Purges at low pressure (Valid on systems
with Fast Flush option)
LOW - Indicates that the system is protected by low pressure
and is o (standby) until there is sucient inlet pressure to
restore system operation.
FULL -Indicates that the system is in standby as the stop signal
was received by high product water level in the storage tank.
TIMER -The time the system has been in continuous operation.
PRO+RO SYSTEMS DO NOT KEEP CONTINUOUS TIME
IF POWER IS LOST OR IF A LOW PRESSURE OR WATER
LEVEL ALERT IS INDICATED ANDTHE SYSTEM IS SHUTOFF.
- At initial start-up, the PRO+RO system counts in seconds until
it reaches minutes and later to hours as in the example below.
- When the system reaches 1 hour of continuous operation
the system screen counts in hours and minutes as in the
example below.
IF POWER IS INTERRUPTED OR IF THE SYSTEM IS
SHUTOFF BY A WARNING SWITCH. THE SYSTEM
WILL START FROM ZERO AGAIN.
TDS - Registers the quality of the product water by measuring
the total dissolved solids in PPM units.
By default the controller provides a 10 second delay in
start-up of the system when you place the selector switch
on AUTO for double electrical protection of the system.
CONTROLLER PROGRAMMING:
The PRO+RO Reverse Osmosis System has already been factory
programmed with pre-set parameters for basic operation,
however if you want to adjust time setting for models
purchased with fast integrated ush, then follow these
instructions for adjustment:
1. With the system pluged and selector switch o is in AUTO,
press and hold down the SET key for 3 seconds to enter
the settings mode until you hear a "Beep" and enter the
options menu to adjust the setting parameters. P1 starts
with the UP and DOWN keys to adjust the parameter as
you need. Once complete press the SET key again to
pass to the next parameter (P2) and so on until you make
your adjustments up to P6 and then go back to the home
screen.
2. If you purchased a system with membrane fast ush
option, you can run the fast ush manually by pressing
for 5 seconds the UP and DOWN keys simultaneously and
this will be activated for the time you have previously
programmed it.
3. Or you can stop the fast ush process and adjust less time
while in manual mode by pressing the DOWN button to
stop ushing and adjusting less or more time. Hold the
DOWN key when you want to return to the original count.
00:00
TIMER
000
T.D.S
LOW FULL
MAIN
PUMP
FLUSH
00:0 0
TIMER
000
T.D.S
LOW FULL
MAIN
PUMP
FLUSH
!
00:59
TIMER
(59 seconds)
01:00
TIMER
(1 minute)
01:10
TIMER
(1 hour : 10 seconds)
01:01
TIMER
(1 hr : 1 minute)
!
CONTROLLER PROGRAMMING
6

- 9 -
INFORMATION DISPLAYED ON SCREEN:
Timer -Indicates the time the system
has been working and starts measuring
a range of time (minutes: seconds), after
an hour of operation this changes its time
reference to: (hour: minute).
You can also view here when the
membrane is in fast ush mode.
It will display a countdown in seconds.
When the system is on (stand by) but
has the power On- the control will save
information showing how long the System
has been operating. If for any reason the
system does not get an electrical supply
the information stored previously will be lost.
After 9999 hours, the timer will return to
000 hours.
TDS - Shows the quality of product water
in TDS PPM being obtained at that time.
LOW : When this appears on the screen,
it indicates low pressure in the system.
Additionally, on the control box, a Yellow
light will illuminate when there is low
pressure as a visual reference.
FLUSH - When membrane ush
is activated, droplets above the word
FLUSH are displayed.
MAIN PUMP - This display represents
the high-pressure pump of the System
is activated. When Blades are in motion
it means the pump is ON. In addition,
the green light on the control box will
indicate that the system is in operation.
FULL - Appears on the screen when a signal
is received that the storage tank is full.
SETTING PARAMETERS:
P1 -Time Setting adjustment for the duration of the membrane
fast ush; 15 sec, 30 sec, 45 sec, 60 sec.
P2 -Setting for adjusting the start-up delay time for the start if
the system receives any signal by the low pressure or high level
switch; 0 sec = o, 5 sec, 10 sec, 15 sec, 20 sec.
P3 - (OPTIONAL FEATURE – SKIP IF FAST FLUSH WAS NOT PURCHASED
WITH THIS FEATURE) Select frequency or time between each
membrane fast ush when the system is operating; 0 = OFF
(OFF function), 1 hr, 2 hr, 3 hr, 4 hr, 5 hr, 6 hr 7 hr, 8 hr, 9 hr,
10 hr 11 hr 12 hr. (only used when purchasing a system with
fast ush integrated)
P4 -(OPTIONAL FEATURE – REQUIRES PROGRAMMING)
Select frequency or time between each membrane ush
when the system is in standby; 0 = OFF (OFF function),
12 hr, 24 hr, 36 hr, 48 hr, 60 hr, 72 hr, 84 hr, 96 hr.
P5 -TDS range selection (set point) if you want to send an
alarm signal indicating that water quality has changed;
0 = OFF (function o), it can be adjusted 10 PPM to 200 PPM.
The control will trigger an alarm indicating that the quality
of water changed, then the alarm will repeat every hour,
until you identify and correct the problem with the TDS.
P6 -Parameter based on the sensitivity setting of the TDS meter.
The lower this parameter the best sensitivity will be for this sensor.
It is suggested to be set to less than 15 PPM after calibration.
The last screen in the parameter settings records the last 5
events of "non operation" presented by the system and how
long it was o. Up and Down Arrow reads T1, T2, T3, T4 and T5
are records in the memory of the “non operation”and indicates
which switch was deactivated.
Parameter settings recommended for basic automation:
P1 = 15 P2 = 0 P3 = 0
P4 = 0 P5 = 50 P6 = 15
1:0 1
TIMER
158
T.D.S
LOW
FULL
MAIN
PUMP
FLUSH
CONTROLLER PROGRAMMING

- 10 -
CABLE CONNECTION IDENTIFICATION:
Violet: Low level Switch in the raw water tank (SW1) (*)
Blue: Shut-O Switch for the pre-treatment (SW2) (*)
Green: Storage tank level switch (FULL)
Yellow: Low pressure switch (LOW)
Gray: Booster Pump System (FEED)(*)
Orange: Solenoid Valve for membrane ush ( FLUSH)
Brown: High Pressure Pump System
Red: Solenoid Valve water feed system
Black: Power 110 V-240 V
(*) Deactivated in PRO+RO models
TDS SENSOR CALIBRATION
CONTROLLER:
- The controller has a basic TDS sensor that gives you a reading
of the quality of your product water that lls your tank.
- If you want to verify the calibration of the sensor,
we recommend calibration solutions in the range of
5 PPM to 10 PPM maximum.
- Turn the selector switch o, remove the sensor from its original
position, introduce it into the reference solution and check
the reading on the screen. The switch is o, but the controller
must be on.
- If there is a dierence between what we read on the screen,
then press the SET button for 3 seconds and go to parameter
P6 and select the value of the reference solution with the
UP or DOWN keys and then press SET.
- Reconnect the sensor in its original connection..
CONTROL BOX FEATURES
- Nema 4 Box: ABS
- Electrical Contactor: 24 AMP
- Thermal Relay: 24 AMP
- Low Pressure Switch range: 4-12 PSI
- Selector Switch 2 positions (OFF - AUTO)
- Low pressure indicator light: Yellow LED Type
- Power indicator light: Green LED Type
- Level switch is provided for field installation (in separate bag)
- Power supply options: 120 V (220 V + Neutral on 4SS model)
VIOLET
BLUE
GREEN
YELLOW
GRAY
ORANGE
BROWN
RED
BLACK
2 AMP
CONTROLLER PROGRAMMING
FUSE TYPE:

- 11 -
START-UP
1. Make sure that everything related to the pre-treatment
process is operating properly and has been backwashed several
times to avoid nes from entering the system.
2. Turn the switch on the control box to AUTO. The indicator light
on the display lights and the low pressure indicator is activated.
3. All pressure gauges will read 0.
4. Activate the feedwater by opening the supply valve
to the system.
5. Make sure the waste and recirculation valve are fully open.
6. The inlet pressure gauge should climb to 30 PSI. When the
inlet pressure reaches approximately 20 PSI the low pressure
indicator light will turn o.
Note: Ensure all air is purged from system using red pressure relief
button button on the top of system.
7. After 10 seconds the pump will come on. After the pump turns
on the system pressure gauge will begin to rise.
8. Purge for 10 minutes before adjusting the waste valve by
closing it slowly until the product and waste indicator show the
same values in GPM.
NEVER allow the gauge pressure to exceed 200 PSI.
9. Adjust the waste valve by slowly closing it until the system
pressure is in the range of 140-200 PSI depending on the type of
membrane used.
!
NEVER completely close the waste valve.
10. The reverse osmosis unit is now in operation. Check for
leaks. PPM product water will take approximately 60 minutes
to reach the optimum final quality since the membranes
must be flushed from preservants.
!
WARNING: The reverse osmosis system must be ushed
thoroughly for one hour before using the product water.
The concentrate and permeate should run to a suitable
drain for ushing the system.
INITIAL TESTS
After 15-30 minutes both the feedwater and the product water
must be monitored with the TDS meter. You must obtain at least
90% rejection in the nal product water quality.
If the rejection is less than 90% recheck the installation of the
membrane and that they are positioned in the right direction by
making sure the seals of the membrane are in the same direction
of the ow of water. Also check o-rings and membrane caps to
identify where the problem is.
Disconnect the cables from the level switch and make sure that:
1. The system pump turns o automatically.
2. There should be pressure on your pre-lter and remain stable.
3. The pump system is switched o and both the ow to
product and waste stop (no output).
4. The control box must remain on and the screen illuminated
when the level switch is open, the screen will show full.
Reconnect the wires to the liquid level switch. The pump will
automatically turn on. The pressure will increase and the water
will ow through the product and rejection.
!
START-UP
7

- 12 -
TROUBLESHOOTING GUIDE
Symptom Possible Cause Solution
1) The reverse osmosis
system will not start.
A) Power switch is o. A) Place in AUTO position.
B) No power.
B1) Check power outlet and make sure system is plugged in.
B2) Check 2AMP fuse on back of controller.
C) Not enough inlet pressure
and the low pressure switch is not activated.
C1) Verify that the feed valve is fully open.
C2) Make sure your pre-treatment pump is operating
properly to supply pressure to the reverse osmosis system.
C3) Check continuity in the low-pressure switch to ensure
it is in good condition and / repair or replace.
C4) Check that pretreatment does not exceed the pressure drop as
this low feed can lead to insucient water pressure to system.
D) Timer start is failing in the electronic contro-
ller. D) Check programming boot time.
E) Magnetic starter is burned. E) Check if overload relay is not under protection. Push black squa-
re button at the right of relay to reset. Note: Green LED will be o.
F) The level Switch is open. F) Check to see if the storage tank is lled with product water. Lower
the level for the switch to close and send the start signal to the system.
G) Pump motor burned. G) Check with a multimeter all electrical connections and switches
to determine cause of failure before replacing the motor.
2) No high pressure
in the system.
A) Air in the system. A) It is normal for the system to have and purge air. Let the system
run for a while (at least 5 minutes) before starting to adjust the pressure.
B) Waste Valve open. B) Adjust the recommended pressure to the membrane type
selected.
C) Recirculation valve completely open. C) Check and Adjust.
D) Faulty pressure gauge. D) Check and Replace.
E) Tubing or hose kinked or blocked. E) Check, replace the tubing.
F) Pump impellers are worn or damaged. F) Check impellers and replace if necessary.
G) There is not sucient water pressure feeding
the system and the pump is also sucking and
pressurizing at the same time.
G) DANGER! This can collapse pressure tanks on pre-treatment.
Check system feed pump as well as its pre-treatment and correct.
H) Wrong voltage feed.
H1) Make sure the power supply is the voltage that corresponds to
your system and make adjustments if necessary.
H2) Measure motor amperage and verify that it is within the
range of motor nameplate for supply voltage. Make adjustments
necessary.
I) Clogged or faulty solenoid. I) Check if your solenoid valve is operating properly
And does not have something stuck internally, Check and correct.
3) No water or
too little rejection.
A) Membrane Fouled Open
A) Check the TDS on the product line, if the TDS is the same as the
feed water line, the membrane is fouled open or there is a leak
of reject water through an oring. Check and if necessary change
orings on membrane housing caps or replace the membrane.
B) Waste valve clogged
B) The pressure exceeds the initial set limit indicating that
salts saturation was excessive and is obstructing the waste valve or
drain line. Verify that the drain tubing is not bent or kinked, conrm
the cause and correct.
8
TROUBLESHOOTING GUIDE

- 13 -
Symptom Possible Cause Solution
4) No product or too
little water production.
A) saturated or dirty membrane. A) Check, clean, replace if necessary.
B) The water temperature is very low.
B) Check your feed water temperature, check your correction
factor for the temperature and make sure that the ow is at an
acceptable level.
C) Low pressure in the system. C) Check other causes mentioned in this manual under issues
of not having enough pressure.
5) Product water
with high content of
dissolved salts (TDS).
A) Low pressure in the system.
A1) Waste valve open, check and adjust.
A2) Check other causes mentioned in this manual under issues
of not having enough pressure.
B) Osmosis membrane seal is not seated or in
good condition inside the membrane housing.
B) Check that the membrane is installed properly and for leaks
in the oring or cap causing a mixture of water and waste-product.
C) Reverse osmosis membrane exhausted. C) The membrane life is on average 2 years.
Replace the membrane if life already exhausted.
D) Product lines and waste water are reversed. D) Change and correct reversed connections.
E) The amount of TDS in the feedwater changed.
E) An increase in its raw water TDS can alter product water quality,
verify the cause of this increase and that the membrane is rejecting
the percentage of suitable salts.
6) Dierent taste
and odor in water
product.
A) Saturated and polluted membrane
(bacteria).
A) Check, perform chemical cleaning.
Replace if necessary.
B) Presence of foreign matter in the tank storage.
B1) Clean, empty and sanitize the tank.
B2) Replace lter cartridges.
C) Product lines and waste water are reversed. C) Change and correct reversed connections.
D) Presence of foreign matter in the tank storage. D) Integrate special pre-treatment to remove gases.
E) Problems with your pre-treatment.
E1) Exhausted lter media.
E2) Softener without sucient rinse time and sends saltwater
into the reverse osmosis system. Correct the problem.
F) Reverse osmosis membrane exhausted. F) The membrane life is on average 2 years.
Replace the membrane if life has been exhausted.
G) Osmosis membrane sealing is not perfect
in the membrane housing.
G) Check that the membrane is installed properly and for leaks
in the oring or cap causing a mixture of water and waste-product.
H) Post-carbon lter is exhausted. H) Replace the Post-carbon lter block if one is installed.
TROUBLESHOOTING GUIDE

- 14 -
PRETREATMENT REQUIRED
FOR REVERSE OSMOSIS SYSTEMS.
This flow chart shows the typical pre-treatment and post-
treatment equipment to complete the purification process.
For this process to work properly you will need to make the
final selection of the most appropriate pretreatment, per the
characteristics of incoming water to ensure that your reverse
osmosis system will work efficiently. Selection of post-
treatment is also recommended to achieve a final quality of
water desired.
It is advisable to ensure that raw feed water is microbiologically
safe and/or has been subjected to a purication process, if
this has not occurred or in doubt, Disinfection should be a
considered step by injecting liquid chlorine (preferably) and
allowing a contact time of at least 30 minutes. As part of a
-primary pretreatment it is recommended that the following
be considered in a pretreatment installation:
1. Sediment filter: These filters are designed to remove
sediment present in the raw water and are important to
prevent dirt from reaching the membrane and fouling it
quickly. Various filtering materials such as: multimedia, silica
sand, cartridge or bag filters may be used.
2. Activated carbon lter: The membranes (central part) of the
reverse osmosis system cannot tolerate chlorine. It is extremely
important to give proper maintenance to the unit by changing
carbon lter material within recommended time frames, doing
this will increase the lifetime of the membranes.
3. Water softener: To avoid saturation and fouling of the
membranes a water softener is recommended before reverse
osmosis. Depending on the hours of operation of the reverse
osmosis system, a simple single tank or dual tank is adequate.
4. Injection anti-incrustate polymer: The intent is to regulate the
Ph before entering the osmosis membrane and inhibit the eect
of fouling.
9
ROA-IXC-2SS-B
DESCRIPTION OF EQUIPMENT:
1. Deep bed lter or zeolite
2. Activated carbon lter
3. Softener single or duplex
4. Injection antifouling polymer (optional)
5. Reverse Osmosis System
6. Product Water storage tank
7. Hydropneumatic equipment or pumping system
8. Filter cartridge type polisher
9. Ultraviolet germicidal lamp
Raw Feed Water
Puried Water
1 2 3
4 5 6 7
8 9
80
0 100
20
30
40 50 60
70
9010
80
0100
20
40 60
TYPICAL REVERSE OSMOSIS PROCESS INSTALLATION
Description of Equipment
1. Deep bed lter or zeolite
2. Activated carbon lter
3. Softener single or duplex
4. Injection antifouling polymer (optional)
5. Reverse Osmosis System
6. Product Water storage tank
7. Hydropneumatic equipment
or pumping system
8. Filter cartridge type polisher
9. Ultraviolet germicidal lamp
REVERSE OSMOSIS PRE-TREATMENT

- 15 -
PRO+AQUA warrants that your new PRO+RO System is built of quality materials and
workmanship. When properly installed and maintained, it will give years of trouble free service.
One Year Guarantee
PRO+AQUA will replace any part that fails within (1) one years from date of purchase, provided
the failure is due to a defect in material or workmanship. The only exception shall be when proof
of purchase and installation is provided. The warranty period shall be from the date of purchase.
Parts will not be covered for systems with excessive iron, manganese or with very high chlorine
concentrated feed waters. A proper pre-treatment system is required to be placed before the RO
system.
PRO+AQUA will provide replacement parts to the original equipment purchaser in possession of a
PRO+RO Series RO System that fails within (1) one years after the date of purchase, provided that
it is at all times operated in accordance with specications and not subject to freezing, sunlight or
installed outdoors.
General Provisions
PRO+AQUA assumes no responsibility for consequential damage, labor or expense incurred as a
result of a defect or for failure to meet the terms of these guarantees because of circumstances
beyond our control. Installation workmanship failure is not covered under warranty. Damage
caused by environmental conditions such as, lightening strikes, humidity or heat will not be
covered under warranty. External uncovered installations are not covered by this warranty.
System must be installed in a covered insulated area.
These warranties are in lieu of all other warranties expressed or implied, and we do not authorize
any person to assume for us any other obligation on the sale of this water ltration system.
No responsibility is assumed for delays or failure to meet these warranties caused by strike,
government regulations or other circumstances beyond the control of Pro+Aqua.
Obtaining Warranty Coverage or General Inquiries
If coverage is available, you may obtain coverage under this Limited Product Warranty by provid-
ing PRO+AQUA with proof of original purchase, and that you are the original purchaser. In making
the claim, please provide the order number, your name, address, phone number, a description of
the product involved, an explanation of the defect and photos/video.
SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATIONS OF INCIDENTAL OR
CONSEQUENTIAL DAMAGES SO THE ABOVE LIMITATION MAY NOT APPLY TO YOU. THIS WARRANTY
GIVES YOU SPECIFIC LEGAL RIGHTS, AND YOU MAY ALSO HAVE OTHER RIGHTS WHICH VARY
FROM STATE TO STATE. THIS WARRANTY MAY BE TRANSFERRED TO A SUBSEQUENT OWNER WITH
WRITTEN APPROVAL FROM PRO+AQUA AND PAYMENT OF STANDARD TRANSFER FEE.
WARRANTY

www.proaquawater.com.com
Professional Water Filtration Systems
© Copyright PRO+AQUA. All Rights Reserved.