USF RO ManualOMRX_6.pdf

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RX Manual 04/04 Rev. 6 OPERATING INSTRUCTIONS Use this section for daily startup or to restart the system after a short-term shutdown. A. BEFORE starting the RO unit, verify that the following conditions exist: DEVICE CONDITION Pump discharge throttling valve ¼ to ½ OPEN Reject throttling valve ¼ to ½ OPEN Reject recirc throttling valve 1/8 to ¼ OPEN Any valves in the reject to drain line OPEN Any valves in the process supply line OPEN Pre treatment equipment ready for use Storage tank (if applicable) ready for use IF ALL THE ABOVE CONDITIONS EXIST, THE SYSTEM IS READY TO START. IF ONE OF THE SETTINGS IS INCORRECT, CORRECT THE SETTING PRIOR TO PROCEEDING. B. Verify the Controller is set to the proper operating mode, either TANK FEED or DIRECT FEED as described in the MC10 RO Controller manual in the Appendix. C. Press the SYSTEM START button on the Controller. This will start the system. The inlet solenoid valve will open then the pump will start after a 15 second delay. D. Verify that the product, reject, and product & reject recirculation flows are correct. If not, adjust the pump discharge throttling valve, reject valve, and product & reject recirculation valves. Refer to the Product Description/Equipment Specifications for design flowrates and pressures. Adjustment procedure: First, adjust the unit to make the correct amount of RO product water by adjusting the system pressure. This can be accomplished by regulating the pump discharge throttling valve. Further open the valve to increase the system operating pressure and productivity, further close the valve to reduce the system operating pressure and productivity. Second, adjust the unit to make the correct amount of reject to drain flow by adjusting the reject throttling valve. Open the valve to obtain a higher flow rate or close the valve to reduce the flow rate. Third, adjust the unit to make the correct amount of product and reject recirculation flows by adjusting the product and reject recirculation throttling valves. Further open the valve to obtain a higher flow rate or close the valve to reduce the flow rate. NOTE: Creating an equilibium may require several adjustments in that as you close the reject valves, the product flow increases and the reject flow decreases. As you open the pump discharge-throttling valve, the product and the reject flow increase. You may have to adjust the pump discharge-throttling valve to reestablish the operating pressure to obtain the correct product flow as established in the first step. USFilter 3-3
RX Manual 04/04 Rev. 6 OPERATING INSTRUCTIONS E. Once the RO unit is operating at the parameters outlined in this manual, record the operating parameters on the “RO Data Collection Form” as described in Section 4.4, and found in the Appendix. It is imperative to record the operating parameters daily, since RO troubleshooting may require a trended analysis of the RO operating parameters. NOTE: If the RO will not start, or cannot achieve the correct flows, go to the troubleshooting section for more information. 3.5 SHUTDOWN (LESS THAN 4 DAYS) CAUTION If the shutdown is due to a malfunction, be sure to disconnect the electrical power and turn off the water supply before making repairs or replacements. If the system is not to be operated for up to 4 days, the system should be placed in the STANDBY mode. When in this mode the RO system cycles on and off continuously for a duration and interval established by the user until the mode of operation is changed again. This mode will allow the system to return to normal (TANK or DIRECT FEED mode) operation at any time with no adverse affects on the water quality or RO membranes. 3.6 LONG TERM SHUTDOWN PROCEDURE If the system is to be down for a period longer than 4 days, it is recommended that a biocide be pumped into the membrane elements to prevent biological growth. CAUTION Failure to store the membranes in a biocide for long term shutdown can cause irreversible damage to the membranes due to bacterial growth. NOTE: Contact your local USFilter representative to aid in preparing your RO system for long term shutdown and storage. The solution USFilter recommends is a 0.5 to 1.0% solution of sodium bisulfite. For conditions where freezing may be a problem, the solution should also contain up to 18% (by weight) glycerin or propylene glycol. Refer to RO membrane data sheet in Appendix for further information. The following equipment and materials are needed: CIP Cleaning Skid RO Product Water or DI Water Sodium Bisulfite (food grade) Propylene Glycol or Glycerin (if required) Safety Equipment USFilter 3-4
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Page 5 and 6: TABLE OF CONTENTS SECTION DESCRIPTI
Page 7 and 8: For Product and Service Information
Page 9 and 10: RX Manual 04/04 Rev. 6 INTRODUCTION
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