USF RO ManualOMRX_6.pdf

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RX Manual 04/04 Rev. 6 SYSTEM MAINTENANCE Product Flow Rate 100 X = % Recovery Product Flow Rate + Reject Flow Rate The percent recovery should not exceed the design value shown on the Equipment Specifications sheet in the Appendix. If minimizing water usage is critical, the percent recovery should be maintained near, but not above the maximum value. Operating with too high a percent recovery will lead to premature fouling of the membrane. F. Bacteria 1. For critical applications, such as dialysis and pharmaceuticals, measure the number of bacteria in the product water weekly. Record the results as colony forming units per milliliter (CFU/ml). Sanitize as necessary. 2. For non-critical applications, measure the number of bacteria in the product water monthly. Record the results as colony forming units per milliliter (CFU/ml). Sanitize as necessary. G. If the maintenance log shows steady deterioration in results (product flow, percent rejection, etc.) corrective action should be taken. (Described in Section 5.0 Troubleshooting.) USFilter 4-10
RX Manual 04/04 Rev. 6 TROUBLESHOOTING 5.1 SYSTEM INOPERATIVE 5.0 TROUBLESHOOTING A. Check to see if power to the unit is turned on. B. Verify the controller indicates that the system is on, if not press the system start button. C. Verify that the motor starter relay is engaging, if not reset the overload relay. If the overload relay fails to reset, replace the overload relay or contact your USFilter representative for further assistance. D. Check the motor starter coil for proper operation and replace if necessary. E. With a voltmeter check that power is being supplied to the motor. If proper voltage is going to the motor but it does not run, replace the motor or contact your USFilter representative for further assistance. 5.2 LOW SYSTEM PRESSURE A. If the feed pressure before the prefilter is too low, check for obstruction in equipment and piping between feed source and RO unit. B. If the feed pressure after the prefilter is below normal, check for high differential pressure across the prefilter (plugging), replace the filter cartridge. C. If the membrane feed pressure is below normal, verify that the pump is running. D. Verify that the reject, reject recycle and product flows are normal. If not, adjust to design flow rates using the Equipment Specifications located in the Appendix and recheck membrane feed pressure. E. If the flows cannot be adjusted to the above flow rates, slowly close the reject and reject recirculation valves to observe the maximum pressure to the membrane. Do this only briefly and do not completely close the valve. If this pressure does not exceed 150 psig, repair or replace the pump/motor. 5.3 LOW PERCENT RECOVERY A. Check product, reject, reject recycle flow rates and feed pressures to be sure they are normal; adjust flows as necessary. B. If feed to membrane pressure exceeds normal by 10% and product flow is lower than normal at a given temperature, the RO membranes are beginning to fail. They should be cleaned or replaced. NOTE: Contact your local USFilter representative for assistance when the RO system requires cleaning. USFilter 5-1
Page 1 and 2: USFilter 10 Technology Drive Lowell
Page 3 and 4: applications. A warning alarm indic
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
Page 11 and 12: RX Manual 04/04 Rev. 6 INTRODUCTION
Page 13 and 14: RX Manual 04/04 Rev. 6 SYSTEM INSTA
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Page 17 and 18: RX Manual 04/04 Rev. 6 OPERATING IN
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Page 21 and 22: RX Manual 04/04 Rev. 6 SYSTEM MAINT
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Page 33 and 34: RX Manual 04/04 Rev. 6 TROUBLESHOOT
Page 35 and 36: RX Manual 04/04 Rev. 6 WARRANTY 6.1
Page 37 and 38: RX Manual 04/04 Rev. 6 APPENDIX 7.1
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Page 43 and 44: RX Manual 04/04 Rev. 6 APPENDIX 7.4
Page 45: RX Manual 04/04 Rev. 6 APPENDIX 7.6

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