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Summary of Contents for Rotek RA Series
- Page 1 USER’S MANUAL Reverse Osmosis System RA Series MODELS RA800 RA1500 RA2000 RA3000 RA4500 RA6000...
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Page 2: Table Of Contents
Table of Contents Introduction Safety Labelling Feedwater specifications System Specifications System Component Identification System Flow Schematic Unpacking and Installation Installation Procedure 11-12 Start up and Operation 13-14 Microprocessor Controller and TDS Readout Troubleshooting Appendix 1 Membrane Cleaning 17-20 Appendix 2 Sample operations log Appendix 3 Sample analysis request format... -
Page 3: Introduction
Introduction Your compact commercial Rotek reverse osmosis system is a durable piece of equipment which, with proper care and maintenance will last for many years. These systems are part of a family of reverse osmosis units designed for operation with fresh feedwaters having TDS values below 1,500ppm. - Page 4 Options are available for: ≈ Reject recirculation to recirculate some of the waste stream and improve recovery rates ≈ CIP provision for semi-automated membrane cleaning ≈ CIP station to simplify membrane cleaning ≈ Chemical dosing systems for automation of pre-treatment ≈...
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Page 5: Safety
Safety The Safety section of this User’s Manual outlines the various safety headings used throughout this manual as shown below: NOTE: Indicates statements that provide further information and clarification. CAUTION: Indicates statements that are used to identify conditions or practices that could result in equipment or other property damage. -
Page 6: Feedwater Specifications
Feed Water Specifications General Feed Water Requirements Feedwater quality, pressures and flow rates have a significant impact on the performance of any reverse osmosis system. To ensure reliable and consistent long-term performance, it is important to supply feed water having the minimum specifications detailed below. If your feedwater supply is marginal, you should consider using a feedwater break tank and booster pump to supply the system. -
Page 7: System Specifications
System Specifications Systems for raw water TDS value below 1,500 ppm Model RA800 RA1500 RA2000 RA3000 RA4500 RA6000 Permeate Flow 800 / 150 1500 / 250 2000 / 350 3000/500 4500 / 750 6000 / 1000 [GPD/LPH] Dimensions (LWH) [cm] 60*48*155 60*48*155 60*48*155... -
Page 8: System Component Identification
System Component Identification Front Front Front Back Back Back Component Part Number Inlet Pressure Gauge ON/OFF RO Outlet Pressure Gauge CBMC3T220VHS Power Switch GP35B25 Needle Valve (Concentrate Water Regulator) GP07B25 Permeate Water Flow Meter SMNV12F Computer Programmed T.D.S. Controller CMSNPS203 Concentrate Water Flow Meter CSVNC04 Low Pressure Protection Switch... -
Page 9: System Flow Schematic
System Flow Schematic RO Membrane Module Permeate Flow Meter Inlet Pressure Product Water Outlet Low Pressure Gauage Switch Raw Water Inlet Inlet Solenoid Valve Recovery Valve High Pressure Pump 20”Pre-Filter Neede Valve Flush Solenoid Valve Concentrate Flow Meter Drain Drain Optional features not shown here include: •... -
Page 10: Unpacking And Installation
Unpacking and Installation Packing List 1 Reverse Osmosis System 2 ½” Flexible PE Tubing (5 m) 3 Filter Housing Spanner 4 Operating Manual Check that all components are present and in an undamaged condition. If anything is missing or appears damaged, notify your supplier immediately. Installation Notes Before installation, check that the power supply available matches the power requirements of the system. -
Page 11: Installation Procedure
Installation Procedure Step 1 Connect the pre-treated feedwater source to the inlet solenoid valve using a ¾” male thread coupling. Use Teflon tape and leak sealant as necessary to ensure a leak-proof connection. Step 2 Connect a length of ½” flexible PE tubing to the fitting on the rear of the front panel labelled ‘Concentrate’. - Page 12 Step 5 Take the blue wire from the wiring loom inside the electrical box and connect this to the float level sensor in the permeate storage tank. This allows the RO to turn on and off automatically according to the treated water storage tank level. Note that this connection is a contact closure only.
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Page 13: Start Up And Operation
Start Up and Operation System Operation Notes 1. Ensure that feedwater pressure is a minimum of 140kPa (20psi). 2. Check that your feedwater supply flow rate is sufficient for your particular model 3. Check that the available power supply matches your unit requirements. 4. - Page 14 Step 4 After the membrane flush cycle is complete, the unit will close the membrane flush solenoid, check that sufficient feedwater pressure is available and go into normal operating mode Step 5 If the system detects no error condition, normal operation will continue.
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Page 15: Microprocessor Controller And Tds Readout
Microprocessor Controller and TDS Readout Display Description Status Lamps Full Alerts operator when the permeate storage tank is full. The light will turn green and the RO system will stop automatically. Flush This lamp is red while the system is going through an automatic membrane flush cycle Purify This lamp is green while the system is operating normally and treating... -
Page 16: Troubleshooting
Troubleshooting RO TROUBLE SHOOTING GUIDE SYMPTOMS Location Possible Verification Corrective Action Causes Salt Passage Permeate Flow Pressure Normal to Decreased Normal to Predominantly Metal oxide Analysis of metal Improved increased increased first stage. scaling. ions in the pretreatment to feedwater. Check remove metals. -
Page 17: Appendix 1 Membrane Cleaning
Appendix 1 Membrane Cleaning Periodic cleaning of the membrane(s) can improve system performance. In normal operation, mineral scale, biological matter, colloidal particles, and organic substances can foul the membranes and reduce performance. The best prevention is to use a well-designed pre-treatment system incorporating efficient sediment removal, de-chlorination (if chlorine- based sanitisers are present), and softening or chemical dosing for the removal of scale forming minerals. - Page 18 Organic Foulant Cleaning The following cleaning procedures are designed specifically for membranes that have been fouled with organic matter. Review the general cleaning instructions for information that is common to all types of cleaning such as suggested equipment, pH and temperature limits, and recommended flow rates.
- Page 19 6. Flush out. Clean RO permeate water is preferred for this stage. If clean RO permeate water is not available, pre-filtered raw water can be used for flushing out the cleaning solution unless there will be corrosion problems (e.g., stagnant seawater will corrode stainless steel piping).
- Page 20 To regain optimum performance, it may take several cleaning and soak cycles. NOTE: These recommendations are specific for the ROTEK membrane elements used in these reverse osmosis systems and may not be compatible with other brands of membrane elements.
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Page 21: Sample Operations Log
Appendix 2 Sample Operation Log Operator Start up date Site location Cleaning date Model Cleaning solution 1 type System serial number Cleaning solution 2 type Observations Range Date Date Date Date Date Date Date Date Date Hours of operation Feedwater pressure (kPa) 140-650 kPa Pre-filter inlet pressure (kPa) 140-650 kPa... -
Page 22: Appendix 3
Appendix 3 Water Analysis Requirements (minimum recommended) Recommended sampling procedure for bore waters The purpose of this water sample is to correctly identify and quantify the contaminants that may be present in your feedwater. To do this with any accuracy, the sample must be representative of the source water and not water that has been standing in the Pipework for any period of time. -
Page 23: Warranty And Guarantee
Warranty & Guarantee The manufacturer of your reverse osmosis system guarantees that the product is free from defects in material or workmanship when operated in accordance with written instructions for a period of 6 months from start-up or 12 months from receipt, whichever is the shorter. Parts that are not manufactured directly by the manufacturer of your reverse osmosis system will be covered by their manufacturer's warranties. -
Page 24: Notes
Notes: ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________ ___________________________________________________________________...
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