Puretec CO-RO3 User manual

APR2019
User Guide
Food Service Reverse Osmosis Water Treatment System
CO-RO3
For correct operation & installation it is essential to observe these instructions.

2 Food Service Reverse Osmosis System Copyright © Puretec Pty Ltd 2019
What’s Inside
Safety Guides ........................................................................................................................................................3
The Food Service Reverse Osmosis System ........................................................................................3
Before Installation .............................................................................................................................................. 4
Tools & Materials Required ........................................................................................................................... 4
Location of System ............................................................................................................................................5
Installation ..............................................................................................................................................................6
Care & Maintenance ..........................................................................................................................................8
Operating Conditions .........................................................................................................................................9
Troubleshooting .................................................................................................................................................... 10
Warranty.................................................................................................................................................................... 11
What’s Inside

3Copyright © Puretec Pty Ltd 2019 Food Service Reverse Osmosis System
Safety Guides
Read and follow all steps and guides carefully before installing and using your reverse osmosis
system.
Do not use this product to make safe drinking water from non-potable water sources. Do
not use the system on microbiologically unsafe water, or water of unknown quality without
adequate disinfection before or after the system.
This reverse osmosis system contains replaceable components (membrane elements). These
components are critical for the eective reduction of total dissolved solids and specic
contaminants that are listed in the Product Data Sheet.
Consult your local public works department for plumbing and sanitation codes. Follow your local
codes if they dier from this manual.
The reverse osmosis system works on water pressures of 300 kPa minimum to 875 kPa
maximum. Water pressure can be reduced by installing a pressure reducing valve in the water
supply pipe to the RO system. A booster pump should be used for low pressure applications.
Do not install the reverse osmosis system in extreme hot or cold temperatures. Temperature of
the water supply to the reverse osmosis system must be between 4°C (40°F ) and 38°C (100°F).
Do not install on hot water lines.
All new membranes must be ushed for 3-5 minutes.
The Food Service Reverse Osmosis System
Your Reverse Osmosis System has been especially developed to achieve the perfect TDS for
your needs. The system provides three stages of ltration, the TDS bypass can then be adjusted
to allocate a portion of that water to be passed through the reverse osmosis membrane. Water
that has been treated by the reverse osmosis membrane is then combined with water that has
bypassed the membrane, allowing you to customise your TDS levels.
99.9% of minerals and impurities are removed from any water treated by the RO membrane,
the wastewater from this process is sent to drain. Any water that does not pass through the
membrane but passes through the three stages of ltration will retain valuable, avour-
enhancing minerals.
The rst stage of ltration reduces sand, silt, dirt, rust and other sediments. It then passes into
an Ultra Z lter cartridge, which inhibits limescale and reduces unwelcome elements in the
water such as chlorine, bad tastes and odours, as well as providing protection against cysts and
bacteria such as E. coli.
Safety Guides

4 Food Service Reverse Osmosis System Copyright © Puretec Pty Ltd 2019
The 3rd ltration stage uses Balance+ Technology to transforms calcium bicarbonate into a
harmless, crystal form of calcium carbonate. After these calcium carbonate crystals are created,
they cannot dissolve in cold or hot water, thereby preventing the formation of limescale within
the system.
The TDS and ow rate is adjustable thanks to the unique adjustable bypass, whilst the TDS
Meter will provide a live TDS reading.
Before Installation
• Best performance of the system will be achieved when the incoming water has been
treated (softened).
• The water coming into the system must be within certain limits for sediments,
pressure, etc. Refer to the specications to determine if your installation is within the
limits.
• A water quality analysis can be performed to determine if incoming water requires
any treatment. Contact your dealer/installer.
• The lters and membrane elements in the RO system need to be replaced on a
regular basis. Follow the instructions for replacement that are in this manual.
• Ensure that the water supply is within the Operating Conditions (see Page 8) of
the RO, refer to the Specication Sheet for further information (contact Puretec if
parameters are outside the guidelines).
Note: For optimal system performance, use the system for at least 2 minutes continuously
each day.
Tools and Materials Required
• Adjustable wrench, and larger adjustable jaw pliers or pipe wrench to t sink drain
• Saw for cutting drain pipe
• Slotted and Phillips head screwdrivers
• Tubing cutters
Before Installation

5Copyright © Puretec Pty Ltd 2019 Food Service Reverse Osmosis System
Location of The System
Location of System
The Puretec Food Service RO System is design to mounted, either on a wall or within a cabinet.
The RO system can also be located in a location away from the outlet. A nearby water source
and drain point are required.
Note: Keep the lengths of tubing short. Longer lengths of tubing will decrease system
performance. A booster pump can be used on the supply line.
Note: All plumbing should be done in accordance with state and local plumbing codes.
Some codes may require installation by a licensed plumber. Check with the local plumbing
authority prior to installation.
Warning: All components and tubing should be located in an area which is not exposed to
freezing temperatures. Do not expose unit or tubing to direct sunlight.
Water Supply: To provide supply water to the RO system inlet, a feed supply tting is required
or install pipe ttings as needed. The feed water valve should be located as close to the
manifold assembly as possible. USE A POTABLE COLD WATER SUPPLY ONLY. Softened water is
preferred as it will extend the life of the RO membrane element.
Drain Point: A suitable drain point is needed for reject water from the RO system. A oor
drain, laundry tub, standpipe, sump, etc. are all acceptable. If discharging into the utility sink or
standpipe, an air gap of greater than 1/2-inches above the ood rim must be provided. A sink
p-trap drain adapter is included to install as an optional drain point where codes permit.
Do not connect the system drain line to the dishwasher drain or near the garbage disposal. Back
pressure from these units may cause the air gap to overow.

6 Food Service Reverse Osmosis System Copyright © Puretec Pty Ltd 2019
Installation
1.5" Air Gap Required
Above Flood Rim
Inlet (white)
Drain Tube (black)
RO Assembly
kg/cm2
psi 15
200
150
100
50
0
10
5
0
AUTOSHUT-OFF
IN
IN OUT
OUT
P
O
W
E
R
Outlet
Holding Tank Connection
(optional)
RO Membrane
Pure (blue)
Needle Valve
RO Inlet
TDS Meter
Gauge
Shut-Off Valve & Tube (blue)

7Copyright © Puretec Pty Ltd 2019 Food Service Reverse Osmosis System
Installation
Installation
1. Place the RO system in a cool & dry location, allowing 200mm below the unit for lter
changeouts.
2. Mount the unit to the wall using the pre-cut holes in the bracket.
3. Isolate the water supply and release the pressure.
4. Connect the water supply to the ⅜” Inlet (LEFT side) and the ⅜” Outlet (RIGHT side) to the
machine.
5. Connect the ¼ BLACK tubing to the Drain, DO NOT connect this to the inlet of the machine.
ONLY cut the tubing on the drain clamp end, as a Flow Restrictor is pre-installed onto the
Membrane Outlet and may be damaged when cut.
Note: If installing a holding tank connect to the Holding Tank Connection, ensure Valve is in
the OFF position.
6. Rotate the Needle Valve in a counterclockwise motion until the valve is in full Bypass mode.
7. Turn on the water supply slowly, until the system has lled with water.
8. Rotate the Needle Valve in a clockwise motion until the valve is in full ltration mode.
9. Flush the RO membrane for 3-5 minutes by opening the shut o valve on the blue ush line
(see illustration on Page 6) and connect this ush line to the closest drain point.
10. Turn on the TDS Meter by pressing the RED Power button on the top left corner. Press on the
OUT button to view the Outlet TDS level.
11. Rotate the Needle Valve in a counterclockwise motion until the desired TDS level has been
reached.
Note: If utilising a holding tank, turn the Valve into the OPEN position and allow 5-10
minutes for the tank to ll. Flush/drain the tank twice in a row to purge the system.
12. Your system is now ready for use.

8 Food Service Reverse Osmosis System Copyright © Puretec Pty Ltd 2019
Care and Maitenance
To Care for the RO System
The components of the RO system are designed to function with minimal maintenance.
However, the membrane elements and lters will need to be replaced on a regular schedule.
For optimal performance the system should be ushed for 2 minutes after extended periods of
inactivity.
The Reverse Osmosis System has a monitoring device for TDS. To verify that the system is
performing satisfactorily turn on the TDS Meter by pressing the RED Power button on the top
left corner. Press on the OUT button to view the Outlet TDS level.
Replacement of Prelter and Postlter
The carbon/sediment prelter reduces sediment and certain chemicals, such as chlorine, from
the water. Depending on water use and the amount of impurities, this lter should be replaced
every six to twelve months for point-of-use applications.
Whenever the prelter is replaced, the postlter should also be replaced.
Installations using more than 1,000 litres of water per day should install external lters (not
supplied) to reduce, sediment, chlorine and sediment larger than 10 microns.
Replacement of RO Membrane Elements
The functional life of the RO membrane elements will vary based on feed water quality. Product
water should be tested periodically to verify the membrane elements are performing properly.
For most point-of-use applications, the RO membrane elements should be replaced every two
to four years.
Note: Softened water is recommended for optimal system performance and RO membrane
element life.
Replacement of the Prelter, Postlter, and RO Membrane Elements
1. Turn o the water supply to the RO System.
2. Reduce system water pressure by opening a tap down steam, or using the holding
tank connection.
Caution: Even with the water supply turned o the membrane and prelter sumps will
contain a considerable amount of water. By positioning the a tray or bucket under the
system, most of the water will be contained.
3. Undo Membrane Housing Cap by hand, and remove used membrane (pliers may be
required) Open the seal/packaging on the new membrane, insert the double o-ring end
of the membrane rst. Tighten the cap by hand only. Turn the water on and ush the
system for 3-5 minutes.

9Copyright © Puretec Pty Ltd 2019 Food Service Reverse Osmosis System
Operating Conditions
Minimum and Maximum Operating Conditions
Condition Minimum Maximum
Inlet Pressure 300 kPa 875 kPa
Inlet Temperature 4°C 38°C
Inlet TDS - 2,000 mg/L
Inlet Hardness - 150 ppm
Inlet Iron 0 mg/L 0.1 mg/L
Inlet Manganese 0 mg/L 0.05 mg/L
Inlet pH 4 10
Dimensions
ABDepth
430 mm 513 mm 205 mm
A
B
RET3012-500
CO-S150
CO-UZ150
CO-B150

10 Food Service Reverse Osmosis System Copyright © Puretec Pty Ltd 2019
Troubleshooting
Troubleshooting
Issue Possible Cause Corrective Action
Low product ow rate. Low driving pressure. Increase feed pressure. Consider
pump for low pressure locations. Use
short tubing runs to decrease ow
restriction. Increase tubing diameter
for longer distances.
Low water temperature or high total
dissolved solids (TDS).
Increase feed water temperature or
feed pressure to compensate.
Blocked Filters. Replace blocked lter.
Scaled or fouled RO membrane. Replace membranes.
Leak or kink in product line. Find and repair leak or kink.
Concentrate water runs
to drain continuously.
Plugged prelter. Plugged prelter Replace plugged
prelter. Consider sediment prelter
for non-chlorinated applications.
Leak in product line. Find and repair leak. Install pressure
gauge in product line to help identify
a product pressure leak.
Damaged or missing ow restrictor. Replace ow restrictor.
Poor product water
quality.
Water sample taken during system
ush.
Take sample after three minutes of
continuous operation.
Low driving pressure. Increase feed pressure. Consider
pump for low pressure locations. Use
short tubing runs to decrease ow
restriction. Increase tubing diameter
for longer distances.
Plugged prelter. Replace plugged prelter. Consider
sediment prelter for non-chlorinated
applications.
Scaled, fouled, or damaged RO
membrane.
Replace RO membranes.