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REVISION 1.0, 1-19-15 

7.  The sediment filter and carbon must be serviced regularly for optimal performance. The water quali-

ty should be checked every two weeks minimum.  The pre-filters should be checked once a month 

over the first 3 months of operation to determine the filter change frequency.  Typically most appli-

cations will not need to change the filters more than twice annually.  However, in some applications 

sediment or other contaminants in the feed water may require a more frequent filter change.   

8.  Dispose of the initial product (clean) water until the TDS level/conductivity of the product water sta-

bilizes at the lowest (cleanest) value. Use any TDS or Conductivity meter to monitor the product wa-

ter quality. A minimum quality of 96% NaCl rejection is recommended (See the rejection rate calcu-

lation). 

9.

 

Once the system has been flushed and the TDS level has stabilized, the permeate/product line can 

be attached to the storage tank.  Additional flushing of the storage tank and distribution system 

may be required to reach the TDS level that is produced directly after the RO system at all points of 

use. 

 

10. This system has been factory wired and preset with a pressure switch at 20 - 40 psi, which is only to 

be used with a pressurized bladder tank. If using an atmospheric storage tank, a float switch will be 

required to turn the system on and off.  An electric float switch can be used.  The main power can 

be switched by using a “piggy back” connector type float switch or an outlet can be wired to switch 

power on and off utilizing a float switch.  US Water uses an outlet configuration float switch for the 

300 GPD RO system.  Please see the following typical float diagram and complete system layout. 

 

NOTE: ANY CHLORINE EXPOSURE WILL DAMAGE THE MEMBRANE.

 

Summary of Contents for L1-200

Page 1: ...1 REVISION 1 0 1 19 15 US Water Systems 300 GPD Premium Wall Mount Light Commercial RO System...

Page 2: ...11 MEMBRANE INSTALLATION REMOVAL AND REPLACEMENT 12 OPERATION DO S AND DON TS 15 SPECIFICATIONS 16 OPERATION AND MAINTENANCE 18 PREPARING UNIT FOR STORAGE OR SHIPMENT 19 REVERSE OSMOSIS TROUBLESHOOTI...

Page 3: ...the site of operation or if the feed water conditions change please consult US Water Systems for assistance NOTE IN ORDER TO MAINTAIN THE MANUFACTURER S WARRANTY AN OPERATING LOG SHOULD BE MAINTAINED...

Page 4: ...ILURE TO FOLLOW WARNINGS COULD RESULT IN SERIOUS INJU RY OR EVEN DEATH DO NOT UNDER ANY CIRCUMSTANCE REMOVE ANY CAUTION WARNING OR OTHER DESCRIPTIVE LABELS FROM THE SYSTEM PLEASE READ THE ENTIRE MANUA...

Page 5: ...CTURER S WARRANTY OPERATING LIMITS Operating Parameters Feed Water Requirements If any of the feed water parameters are not within the limits given consult your local dealer or distributor for assista...

Page 6: ...solved solids do not pass through the membrane To calculate the rejection use the following formu la Rejection Feed TDS Product TDS Feed TDS x 100 Example 98 5 550 8 25 550 x 100 NOTE ALL TDS FIGURES...

Page 7: ...ter source The minimum feed water pressure should be at least 30 psi The system s minimum operating membrane pressure is 80 PSI but the optimum operating pressure is 100 psi NOTE DO NOT OPERATE AT A P...

Page 8: ...the rejection rate calcu lation 9 Once the system has been flushed and the TDS level has stabilized the permeate product line can be attached to the storage tank Additional flushing of the storage ta...

Page 9: ...9 REVISION 1 0 1 19 15...

Page 10: ...10 REVISION 1 0 1 19 15...

Page 11: ...11 REVISION 1 0 1 19 15...

Page 12: ...12 REVISION 1 0 1 19 15 SYSTEM IDENTIFICATION...

Page 13: ...HE SYSTEM 1 Remove the end cap from the right feed water side of the membrane housings This is done by remov ing the two half moon retaining disks using a 5 Allen wrench the end plug should then freel...

Page 14: ...or installation of the membrane element into the pressure vessels REPLACING THE MEMBRANE ELEMENT WARNING THE BRINE SEAL MUST BE IN THE SAME POSITION AS IT WAS FOR FACTORY PRE INSTALLED MEMBRANE ELEMEN...

Page 15: ...ly twisting it while pushing it onto the housing Ensure that you do not pinch or fatigue any O rings while re in stalling the end plug Push the end plug on until the outer diameter of the plug is flus...

Page 16: ...system and keep a daily log Run the system as much as possible on a continuous basis Always feed the pump with filtered water DON T Permit chlorine to enter membrane housing with the feed water Shut d...

Page 17: ...17 REVISION 1 0 1 19 15 SPECIFICATIONS...

Page 18: ...be replaced 3 It is suggested that a hand held TDS digital meter is used once per week to monitor the water quality NOTE IF THE TDS OF THE FEED WATER EXCEEDS 1000 PPM A HIGHER FLOW RATE FLOW RESTRICTO...

Page 19: ...in such a way that the remaining air in the system is minimized after the recirculation is completed 2 Check the pH once a week When the pH becomes 3 or lower change the preser vation solution 3 Repea...

Page 20: ...e See temperature correction sheet Poor permeate quality Low operating pressure See low inlet pressure Damage product tube o rings Inspect and or replace Damaged or oxidized membrane Replace membrane...

Page 21: ...FOLLOWING PAGE AND FOLLOW THE DIRECTIONS Example 5 gpm 59 F 5 1 42 3 52 gpm 5 gpm 77 F 5 1 5 gpm 5 gpm 84 F 5 0 89 5 62 gpm SERVICE ASSISTANCE If service assistance is required please complete the fol...

Page 22: ...ACTORS FOR MEMBRANE Find the temperature correction factor TCF from the table below Divide the rated permeate flow at 77 F by the temperature correction factor The result is the permeate flow at the d...

Page 23: ...OPERATION FILTER INLET PRESSURE PSI FILTER OUTLET PRESSURE PSI CONCENTRATE PRESSURE PSI PUMP DISCHARGE PRESSURE PSI FEED FLOW GPM PERMEATE FLOW GPM CONCENTRATE FLOW GPM RECOVERY FEED TEMPERATURE FEED...

Page 24: ...24 REVISION 1 0 1 19 15 SYSTEM DRAWING...

Page 25: ...25 REVISION 1 0 1 19 15 L1 300 FLOW DIAGRAM...

Page 26: ...26 REVISION 1 0 1 19 15 L1 SERIES ELECTRICAL SCHEMATIC 110V 60HZ...

Page 27: ...27 REVISION 1 0 1 19 15 L1 SERIES ELECTRICAL SCHEMATIC 220V 50HZ...

Page 28: ...arranty made by the manufacturer of such equipment or component This Warranty does not cover disposable items such as fuses o rings regeneration materials chemicals or other such disposable items whic...

Page 29: ...e part s In such cases Customer will issue a purchase order or other payment guarantee prior to shipment If the returned part is found to have been misused or abused or the defective part is not re ce...

Page 30: ...Y ALSO HAVE OTHER RIGHTS WHICH VARY FROM JURISDICTION TO JU RISDICTION THE PARTIES RECOGNIZE AND AGREE THAT IN ALL RESPECTS THE LAWS OF THE STATE OF CALIFORNIA SHALL APPLY TO AND SHALL GOVERN ANY INTE...

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