CDL NANO RO MAX Reverse Osmosis System Owner’s Manual

NANO RO MAX Reverse Osmosis System

Product Information

Product Usage Instructions

1. Membrane Cleaning

Membranes must be cleaned daily. Ensure proper cleaning of the
membranes to maintain their performance and longevity.

2. Membrane Washing

If the device is not used for a few days, make sure to wash the
membranes properly to remove any accumulated impurities before
usage.

3. Maximum Operating Pressure

The maximum operating pressure for the Nano RO MAX Reverse
Osmosis System is 150 psi. Ensure that the pressure is within this
range to control the level of concentration effectively.

4. Recirculation Pump

The 2-membrane Nano RO MAX is equipped with a unique
recirculation pump for better performance. The pump creates more
cross flow on the membrane surface, ensuring a steady permeate flow
and achieving higher concentration. The recirculation pump must be
running at all times during sap processing, equipment washing, or
rinsing. Select the automatic mode for the pump.

5. Product Design

The Nano RO MAX Reverse Osmosis System is designed to provide a
simple and effective tool for maple and birch sap concentration.
Its two-stage prefiltration removes impurities like suspended
solids and larger organic matter, ensuring better membrane
protection and overall system performance improvement.

6. Technical Specifications

150 psi
Power Consumption| 110 V – 3.5 A at 150 psi, 960W
Transformer| 110 volts, included
Shipping Weight| 31.75 kg
Shipping Dimensions| 32” x 29” x 16”
Included| Test conditions: Reverse Osmosis Concentrator with
Recirculation Pump and 2 Membranes

7. Fittings

Refer to the product manual for detailed information on
fittings.

8. Flow Diagram

Refer to the product manual for a flow diagram of the Nano RO
MAX Reverse Osmosis System.

9. Rinse

Refer to the product manual for instructions on the rinse
process.

10. Wash

Refer to the product manual for instructions on the wash
process.

11. Drain

Refer to the product manual for instructions on the drain
process.

12. Concentration (1 Pass)

Refer to the product manual for instructions on the
concentration process using a single pass.

13. Concentration (Batch)

Refer to the product manual for instructions on the
concentration process using the batch method.

14. How to Replace Pre-filter Cartridge

1. Unscrew the cartridge housing.

2. Remove the old cartridge.

3. Insert the new cartridge into the housing.

4. Lubricate the transparent gasket lightly with silicone grease.
   Ensure that the gasket is still in place.

5. Make sure that the cartridge is centered in the housing and
   fasten the housing into place.

15. How to Install Membranes

1. Unscrew and remove the clamping collars on each side of the
   membranes that need to be changed.

2. On the left side of the membranes, remove the orange ties and
   carefully remove the red concentrate tube connecting the membranes
   by pushing the white quick-connector collars inward.

3. Once the concentrate tube has been removed, use a pry bar or a
   flathead screwdriver at the interface of the cover and the membrane
   housing in the two cover notches. Gently pry off the cover and
   remove it from the housing.

4. On the other side, remove the orange ties to then remove the
   system inlet and the outlet tubes from the covers. Remove the blue
   permeate tube between the membranes and remove the cover.

5. Push the membrane through the housing in any direction to make
   it come out.

Version 1.0 | 05/09/2023 81015-MAN
NANO RO MAX REVERSE OSMOSIS SYSTEM
© All rights reserved ­ CDL Sugaring Equipment

FINDING INFORMATION
Make a record for future use. Brand:

Purchase Date: ____ Model Number: ___ Serial Number:

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Table of contents
INTRODUCTION …………………………………………………………………………………………………………………….. 4 PARTS…………………………………………………………………………………………………………………………………… 6 PRODUCT DESIGN…………………………………………………………………………………………………………………..7 TECHNICAL SPECIFICATIONS …………………………………………………………………………………………………… 8 FITTINGS ………………………………………………………………………………………………………………………………. 9 FLOW DIAGRAM ………………………………………………………………………………………………………………….. 11 RINSE …………………………………………………………………………………………………………………………………. 12 WASH …………………………………………………………………………………………………………………………………. 13 DRAIN ………………………………………………………………………………………………………………………………… 14 CONCENTRATION (1 PASS) ……………………………………………………………………………………………………. 15 CONCENTRATION (BATCH) ……………………………………………………………………………………………………. 16 HOW TO REPLACE PRE-FILTER CARTRIDGE ……………………………………………………………………………… 17 HOW TO INSTALL MEMBRANES …………………………………………………………………………………………….. 17 DAILY MEMBRANE CLEANING ……………………………………………………………………………………………….. 19 PROTECT FROM FREEZING ……………………………………………………………………………………………………. 19 IMPORTANT NOTES ……………………………………………………………………………………………………………… 19 LONG-TERM STORAGE PROCEDURE ………………………………………………………………………………………. 20 WATER QUALITY GUIDELINES ……………………………………………………………………………………………….. 21 WARRANTY …………………………………………………………………………………………………………………………. 22
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INTRODUCTION
Thank you for choosing our Nano RO MAX 2 membrane system. Please read this manual carefully before installation and start-up.
The CDL 2 membranes Nano RO MAX is a simple and effective tool for maple and birch sap concentration. Its two-stage prefiltration removes impurities like suspended solids and larger organic matter to better protect membranes and improve overall system performance.
Remarks and instructions 1. Read the instructions before installing and operating this RO system. 2. To avoid damage to the system, do not disassemble it unnecessarily. Disassembling and reassembling parts may cause damages and fluid leaks. For your safety, it is recommended to plug the unit into a GFCI electrical outlet (not provided with the equipment). 3. To make sure that the system runs properly, be sure to use cleaning chemicals and filters supplied by CDL. 4. Please handle, install, and move the unit with care to avoid damaging the more delicate parts. 5. Before beginning operation, install the membranes and the 5-micron filter in their respective housings. 6. Wash and rinse the system thoroughly before concentrating the sap (see daily membranes cleaning on page 19). 7. During concentration, do not exceed the recommended pressure of 150 psi. Respecting this procedure helps reduce yield loss due to membrane fouling. 8. This system is not designed for concentrations exceeding 5 to 6 degrees Brix in batch mode. Concentration capacity varies depending on the condition of the membranes, the temperature and quality of the sap, it’s level of concentration as well as the tangential circulation and the operating pressure.
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9. Membranes must be cleaned daily. 10. If the device is not used for a few days, make sure to wash the membranes properly. To prevent
bacterial growth, run a citric acid solution (3 pH) through the membranes by adding ¼ cup of CDL citric acid to a 5-gallon bucket of permeate. Stop the device and install the 3 plugs (Green = feed pump inlet; red = concentrate outlet; blue = permeate outlet). 11. Rinse the equipment before resuming concentration. FILTRATION AND CONCENTRATION · The feed line strainer catches impurities in the water and prevents pump blockage. The strainer must remain connected to the feed line (3/8″ yellow feed tube). · The 5-micron filter absorbs harmful substances in the water, such as colorants and organic substances. The filter effectively removes sediments, rust, suspended matter, and other substances from the water (3/8″ yellow feed tube). · The 4020 RO membranes of 0.0001 m generate the reverse osmosis process. Reverse osmosis is a separation process which only lets through pure water molecules and dissolved oxygen. The organic molecules like sugar, polyphenols and good minerals are concentrated. (1/2” red
tube on the recirculation circuit and 1/4” red tube on the concentrate outlet). · A regulating valve on the 1/4″ concentrate outlet (red tube ) increases and reduces the
pressure to control the level of concentration. Maximum operating pressure: 150 psi.
Recirculation pump The 2-membrane Nano RO MAX is equipped with a unique recirculation pump for better performance. By creating more cross flow on the membrane surface, the permeate flow remains steady and the system achieves a higher concentration. This pump must be running at all times when processing sap, washing or rinsing the equipment. Select the automatic mode.
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PARTS
6

PRODUCT DESIGN
7

TECHNICAL SPECIFICATIONS
Model #: Number of taps: Membranes Water removal: Pump rating max flow: Power consumption at 150 psi: Energy consumption at 150 psi: Transformer: Shipping weight: Shipping dimensions: Included:
Test conditions:

REVERSE OSMOSIS CONCENTRATOR WITH RECIRCULATION PUMP AND 2
MEMBRANES
81015 250 – 750 Two 4”x 20” Membranes Recirculation pump 110 V – 3,5 A At 150 psi: 29 GPH @ 5-6 Brix concentrate
54 GPH
8 A
960W
110 volts, transformer included
31,75 kg
32” x 29” x 16”
· 2x 4020 membrane · 1x pre-filter cartridge 2”x10” · Tool for pre-filter housing
· 10′ 3/8″ suction tubing with strainer (yellow)
· 10′ 3/8″ permeate tubing (blue) · 10′ 1/4″ concentrate tubing (red) · 10′ 1/4″ pressure tubing (yellow) · 10′ 1/2″ concentrate tubing (red)
· Spare fitting kit · Spare O-ring kit · Silicone lubricant · PTFE Sealing tape Sap temperature 42 °F, 2 Brix, water reduction 65/35, 150 psi

8

FITTINGS
9

10

FLOW DIAGRAM
11

RINSE
12

WASH
13

DRAIN
14

CONCENTRATION (1 PASS)
15

CONCENTRATION (BATCH)
16

HOW TO REPLACE PRE-FILTER CARTRIDGE
1. Unscrew the cartridge housing. 2. Remove the old cartridge. 3. Insert the new cartridge into the housing. 4. Lubricate the transparent gasket lightly with silicone grease. Make sure the gasket is still in place. 5. Make sure that the cartridge is centred in the housing. Fasten the housing into place.
HOW TO INSTALL MEMBRANES
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1. Unscrew and remove the clamping collars on each side of the membranes that need to be changed. 2. On the left side of the membranes, remove the orange ties visible in step 1 and carefully remove the red
concentrate tube connecting the membranes by pushing the white quick-connector collars inward. 3. Once the concentrate tube has been removed, use a pry bar or a flathead screwdriver at the interface of the
cover and the membrane housing in the two cover notches. Gently pry off the cover and remove it from the housing. 4. On the other side, remove the orange ties to then remove the system inlet and the outlet tubes from the covers as in step 2. Remove the blue permeate tube between the membranes and remove the cover as in step 3. 5. Push the membrane through the housing in any direction to make it come out.
Note: It is possible that the membrane remains stuck in one of the two covers. Use a pry bar or flathead screwdriver to carefully remove the membrane cover. 6. Lightly lubricate all gaskets on new membranes and covers with food-grade silicone grease. Insert the new membrane into the housing according to the direction indicated in the following section. 7. Insert the covers, making sure they rest well on the stainless-steel housing. 8. Reinstall all the connector tubes and clamping collars. Membrane direction When putting a new membrane in the concentrator, it’s important to install it in the right direction to make sure there are no leaks, and that the concentrator is working properly. Each membrane has a brine seal on its concentrate inlet end. We therefore rely on the position of this brine joint to install the membranes the right way. In the Nano RO MAX, the membranes are installed as follows (See picture below): · The brine seal of the upper membrane must be on the right, as the concentrate inlet is on the right. · the brine seal of the lower membrane must be on the left, as the concentrate inlet is on the left.
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DAILY MEMBRANE CLEANING
OPEN THE PRESSURE CONTROL VALVE (red tube)
· Rinse the sugar water out of the equipment using 10 gallons of permeate and recover it in the sap tank. · Complete the rinse with 10 more gallons of permeate. · Using a 5-gallon bucket of permeate at 80 °F, add 1/4 cup of Super Flow Green membrane cleaner. · Place the suction tube (yellow ), the permeate tube (blue ) and the concentrate tube (red ) into
the wash solution bucket. · Open the concentrate control valve. · Run the equipment in a closed loop into the wash solution bucket for 30 minutes. · Once the wash is finished, drain the solution and rinse. · Repeat the wash if the wash solution is coloured or cloudy. · Rinse the equipment with at least 20 to 25 gallons of clean permeate.
PROTECT FROM FREEZING
Protect the equipment from freezing during storage.
· If the equipment must remain in a cold place, remove the filter and drain the equipment properly. Reinstall the filter housing and run the pump dry for a few minutes. This will partially remove water from the system and prevent frost damage to the pumps and other parts. Empty the filter housing once again.
· Make sure there is no water remaining in the equipment and lines. · The equipment may need to be thawed with warm water when it’s ready to be used again. · Make sure that all pumps are ice-free before using the equipment. Small pieces of ice may damage the
pumps. Thaw the pumps with a hair dryer or by pouring warm water over them.
IMPORTANT NOTES
· It is always best to keep the equipment in an area that is above freezing temperature. · If the equipment needs to be relocated in freezing weather, make sure it is drained properly before
exposing it to cold temperature.
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LONG-TERM STORAGE PROCEDURE
1. Properly clean RO membranes using CDL Super Flow Green membrane cleaner (follow the cleaning procedure). Repeated washes may be necessary if the wash solution is cloudy. A coloured wash solution means that the membrane is not entirely clean. The solution should be clear after the final wash. Replace filtration cartridges with new ones. 10 gallons of permeate is sufficient for rinsing between washes. Before rinsing, we recommend draining the wash solution, following the drainage procedure.
2. Rinse membranes with RO permeate or acceptable quality water. If permeate isn’t available, see the water quality guidelines to determine what water is safe to use with the membranes.
3. Citric acid treatment Treating with citric acid helps dissolve minerals that can partially block membrane pores. After completing the washing procedure, add 1/4 cup of citric acid to a 5-gallon bucket of 80 °F permeate. Run the equipment in a closed loop for 1 hour or more. Let the equipment soak overnight. If the water is cloudy, wash the system with CDL Super Flow Green, then rinse.
4. Storage solutions – Membranes in the RO:
The washing and acid treatment procedures (Steps 1 to 3) must be completed before proceeding with this solution. You may leave membranes in the unit for storage as long the unit is protected from frost. Citric acid is a good preservative that prevents bacteria from developing in the system. Add 1/4 cup of CDL citric acid to a 5-gallon bucket of permeate, then run the RO in a closed loop for ½ hour to allow proper mixing. To prevent leaks, disconnect the suction (yellow ), concentrate (red ), permeate (blue ) tubes, and insert the provided plugs in the connectors. Store the equipment in a cool room where it is protected from frost.
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Storage solutions (continued)
-Storage of membranes in the freezer:
· Follow the washing and citric acid treatment steps for long-term storage. · Once the final rinse is complete, drain the equipment and remove the membranes
from their housings. · Let the membranes drain for a few minutes. Do not allow them to dry. · Place the membranes in a large airtight bag and store them in the freezer. Note : This method eliminates contamination risks of the membranes by molds during the non-use period. They will be ready for use again after a simple rinse of the device.

WATER QUALITY GUIDELINES

The quality of the water used for flushing and cleaning the membranes is of utmost importance, as unclean water can cause deposits on the membranes. In most cases, municipal water does not qualify as “clean water”. Chlorinated water must not be used to rinse or clean the membranes.

Special attention should be paid to possible contaminants such as iron, manganese, and silicates. Clean water must always meet the following specifications:

CONTAMINANT Iron (Fe)
Manganese (Mn) Silicate (SiO) Aluminum (Al) Hardness Particle Size Turbidity

REQUIREMENT < 0,05 ppm < 0,02 ppm < 5 ppm < 0,05 ppm
< 85 ppm in CaCO3 < 10 m < 1 NTU

Important Note: When possible, RO permeate is always preferred for washing, rinsing and storage of the membranes.

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WARRANTY
Nano RO MAX CDL Limited Warranty This CDL product is offered with a limited warranty against any manufacturing defects. Breakages related to frost, wear, abuse, poor maintenance, or abnormal use are not covered. This warranty covers only this equipment. CDL isn’t responsible for product lost and any other damages that may result from the use of this product. This warranty does not cover products whose installations do not comply with the installation instructions in the CDL manual and whose use has been made under abnormal mechanical or environmental conditions. The pre-filter and membranes are not covered by this warranty. Parts found to be defective are subject to inspection by CDL which will confirm or deny that said product is subject to a manufacturing defect. If so, the product will be replaced or repaired at CDL’s sole discretion.
Transport costs Transport costs and all other freight charges associated with replacing or repairing products shipped to CDL’s factory must be prepaid by the Customer.
For technical assistance or support, contact your CDL representative, your local CDL store, or the CDL technical support team at 1-800-361-5158.

CDL Maple Sugaring Equipment 257, route 279 Saint-Lazare-de-Bellechasse, QC G0R 3J0 Canada
418-883-5158 | 1-800-361-5158 cdlinc.ca

CDL USA 3 Lemnah Drive St. Albans VT 05478 United-States
802-527-0000 | 1-800-762-5587 cdlusa.com

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NOTES
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References

• Les Équipements d'Érablière CDL : Votre référence en Amérique : Les équipements d'érablière CDL
• CDL USA Maple Sugaring Equipment : your reference in the United States : Les équipements d'érablière CDL

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