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MRO2X

– 5X Manual

- 47 -

98-0058

Rev. R

9.6

SOLENOID VALVE REPLACEMENT

For all valves, Feed, Disinfect, or Product Divert Solenoid Valves

1. Turn off the MRO by pressing the POWER key (the display will show STANDBY), unplug

the 120 VAC power cord from the electrical outlet, turn off the wall disconnect, and place
a lockout in the disconnect handle.

2. Turn off the incoming tap water supply to the MRO.

3. Open the back panel of the cabinet.

4. Remove the membrane(s) and pump (see Section 9.4).

5. Disconnect the solenoid wiring harness plug from the solenoid valve.

6. Disconnect the hoses/tubing from the solenoid valve.

7. Remove the valve from the MRO cabinet by unbolting it from the cabinet.

8. Remove the hose/tube fittings from the defective valve.
9. Make sure that the flow direction arrow located on the side of the valve is pointing in the

correct direction (same as one being replaced).

10. Install per the kit instructions.

11. Reattach the hose/tubing to the corresponding fittings on the valve.

12. Reconnect the wire harness to the valve.

13. Replace the membrane(s), and pump.

14. To verify that the solenoid valve is installed correctly, follow the Solenoid Test

Procedures in Section 9.5.

SECTION 10, WARRANTY

This product is covered under the standard AmeriWater warranty policy. For specific terms and
conditions, please contact your AmeriWater Sales Representative.

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Summary of Contents for MRO2X

Page 1: ...R MROX OPERATION MAINTENANCE MANUAL FOR MODELS MRO2X MRO3X MRO4X AND MRO5X FOR CENTRAL SYSTEM APPLICATIONS Manufactured With Pride In The USA www ameriwater com 800 535 5585 AmeriWater 3345 Stop 8 Road Dayton OH 45414 ...

Page 2: ......

Page 3: ...er potentiel For service by qualified service personnel only Entretien par le personnel qualifié seulement Replace only with 120Vac 15amp time delay fuse Remplacer avec 120Vac 15 amp fusible à retardement seulement Earth Ground terminal Borne de mise à la terre Product marked with this symbol indicates that it is protected throughout by double insulation or reinforced insulation This product has b...

Page 4: ...SINFECTING THE SYSTEM 18 5 2 DISINFECTING AN MRO AND LARGE LOOP SYSTEM 23 5 3 A WORD ABOUT HYDROGEN PEROXIDE PEROXYACETIC ACID 24 5 4 MEMBRANE FLUSH FEATURE AUTO FLUSH 25 SECTION 6 MRO CONTROLLER 26 6 1 FRONT PANEL CONTROLS AND INDICATORS 26 6 2 CONTROLLER OPERATION 27 6 3 CONTROLLER ADJUSTMENTS 30 6 4 STANDARD SETPOINTS 33 6 5 TO DISPLAY OR CHANGE SETPOINTS 35 SECTION 7 EXTERNAL WIRE INSTALLATION...

Page 5: ... caution on the front panel of the MRO that states Use only PAA Use no substitutes means that any of these products are acceptable Do not attempt to use anything other than hydrogen peroxide peroxyacetic acid disinfecting solution Please read the Operations Manual before using the system Contact AmeriWater Customer Service with any questions at 1 800 535 5585 Monday through Friday 8 00 a m to 5 00...

Page 6: ...8 LPD MRO5X 9 244 GPD 34 822 LPD Gallons Per Day Liters Per Day Connections Feed 3 4 plain hose Product 1 2 plain hose Drain 3 4 plain hose Electrical Requirements For the controller 115V 60Hz GFI Ground Fault Interrupter For the pump 208V 230V or 460V three phase 15 Amp fused disconnect 220V single phase 15 Amp fused disconnect Dimensions Packaged Dimensions not Packaged 64 H x 42 W x 38 D 59 H x...

Page 7: ...ater and also is responsible for monitoring the water The AmeriWater MRO System is designed to produce water that meets or exceeds ANSI AAMI RD62 requirements Thin Film Composite Membrane PT401 Antiscalant Scale Inhibitor Contaminants Chemical Feed System Membrane Scale Control Not to exceed 40 ppm Contaminants Percentage Removal Calcium Magnesium Sodium Potassium Fluoride Nitrate NO3 Sulfate Copp...

Page 8: ...under the following conditions Indoor use Altitude up to 2000 m Temperature between 5 C and 40 C Maximum relative humidity 80 for temperatures up to 31 C decreasing linearly to 50 relative humidity at 40 C MAINS supply voltage fluctuations up to 10 of the nominal voltage Transient overvoltages present on MAINS supply CATEGORY II Applicable RATED POLLUTION degree 2 TRANSPORT CONDITIONS ANTICIPATED ...

Page 9: ...MRO2X 5X Manual 5 98 0058 Rev R SECTION 3 COMPONENTS AND SCHEMATICS 3 1 EXTERNAL FRONT VIEW ...

Page 10: ... Gauge that measures the pressure in pounds per square inch of the Incoming Tap Water 7 PRODUCT WATER FOR DIALYSIS Connection carrying Product Water For Dialysis 8 REJECT WATER TO DRAIN Connection carrying Reject to the drain 9 INCOMING TAP WATER Hose carrying Incoming Tap Water that is to be treated by the RO 10 PAA JUG Plastic jug to mix hydrogen peroxide peroxyacetic acid PAA disinfecting solut...

Page 11: ...MRO2X 5X Manual 7 98 0058 Rev R 3 2 INTERNAL REAR VIEW ...

Page 12: ...R ASSY This header directs all product water from the membranes to the flow meter 20 INCOMING CONDUCTIVITY SENSOR Cell that reads the quality of the feed water 21 PRODUCT TO DRAIN SOLENOID Opens when water quality is below set point 22 PRODUCT TO USE SOLENOID Closes when water quality is below set point 23 DISINFECT SOLENOID ASSEMBLY Opens to allow the hydrogen peroxide peroxyacetic acid mixture t...

Page 13: ...MRO2X 5X Manual 9 98 0058 Rev R 3 3 ELECTRICAL DIAGRAM MRO2X MRO3X MRO4X MRO5X ...

Page 14: ...MRO2X 5X Manual 10 98 0058 Rev R 3 4FLUID DIAGRAM MRO2X MRO3X MRO4X ...

Page 15: ...MRO2X 5X Manual 11 98 0058 Rev R 3 5 FLUID DIAGRAM MRO5X ...

Page 16: ...must only be plugged directly into a GFI receptacle It must not be plugged into an extension cord or power strip that could cause low amperage 3 All local plumbing and electrical requirements should be met To avoid electrical shock always unplug the MRO system before opening the face of the electrical controller 4 Incoming water should be between 41 F and 90 F 5 C and 33 C It is not recommended to...

Page 17: ...et on the back of the controller must be in the OFF position during normal operation If the Clean In Place Switch is left in the ON position during normal operation all MRO fail safe modes will be disabled and damage to the MRO or injury to the patient may occur 13 Minimize the opportunities for bacterial growth between uses Whenever the MRO is not used for a period of several hours and connected ...

Page 18: ...ad them carefully 2 INCOMING TAP WATER PRODUCT WATER and REJECT WATER TO DRAIN hoses are labeled to prevent incorrect connections 3 Low pressure shutdown protects the pump if the feed pressure drops below 20 PSI 4 An audible alarm sounds whenever water quality drops to an unacceptable level WARNING The AmeriWater model MRO 2X through 5X is considered a non portable device It can be connected to a ...

Page 19: ... clamp to hold in the necked down area of the barbed fitting 5 Connect the MRO INCOMING TAP WATER hose to the potable cold water supply using the Incoming Tap Water hose and fittings supplied If blending both warm and cold water to improve product flow rate do not exceed 90 F 33 C 6 The REJECT WATER TO DRAIN hose coming out of the MRO system is for reject water The water from this hose will always...

Page 20: ...conductivity alarm may sound which is normal when the MRO is in FLUSH Press the ALARM SILENCE key on the MRO controller to silence the alarm The alarm will restart after a 3 minute delay 16 The conductivity value after flushing and being put back into the service mode must be within the acceptable limit 17 After a thorough flushing of the preservative the MRO must be disinfected prior to being put...

Page 21: ...o Drain feature of the MRO to the drain This will only occur when the Tank Full High limit switch indicates that the tank is full for a long period of time usually around 6 hours since the last use of the MRO If the MRO must be shut down for an extended period however use the following instructions 1 Before turning off the MRO by pressing the POWER key turn the REJECT VALVE counter clockwise to al...

Page 22: ...containers of PAA solution into the MRO and loop system If this can t be accomplished refer to section 5 1 b that describes disinfecting a large loop system 1 Switch off the MRO by pressing the POWER key the display will show STANDBY Disconnect any dialysis machines from the Direct Feed Loop or Central System from the water loop before starting the disinfection procedure Disinfectant for the MRO o...

Page 23: ...cular motion for approximately 10 seconds 9 Connect the PAA tubing male fitting into the quick disconnect fitting that is mounted on the front of the MRO Figure 5 1 10 Press and hold the LEFT ARROW key and then press the RIGHT ARROW key This will access the DISINFECT MODE The controller display will show DISINFECT ENABLED and the keys can be released 11 When in DISINFECT MODE the signal from the c...

Page 24: ...d on the Start Up Log that this step was performed 16a The MRO if not connected to a loop should be filled PAA disinfecting solution To ensure that PAA solution has been pumped through the MRO use Peracid test strips P N 97hp20401 a Using a test strip test the water the REJECT WATER TO DRAIN hose the result must be at least 1 500 ppm b Use another test strip at the PRODUCT WATER hose the result mu...

Page 25: ... THE LOOP USING THE CIP SWITCH IN THE ON POSITION WHEN THE MRO IS IN THE DISINFECTION MODE 17 Label the MRO with appropriate WARNING signs Example DO NOT USE CONTAINS DISINFECTANT 18 Leave the MRO in the DISINFECT ENABLED mode and allow the PAA solution to soak for 60 minutes within the MRO and the loop if connected to one WARNING Soaking longer than twelve hours may cause damage to the membrane 1...

Page 26: ...t Begin to test for the presence of PAA with residual test strips Renal Check PX Test Strips P N 97PX20501 at all water outlet points if connected to a loop 25a If the MRO is not connected to a loop periodically test for the presence of residual PAA at the ends of the REJECT and PRODUCT WATER hoses as the water exits into the sink until no trace of PAA is detected by the residual test strips 25b I...

Page 27: ...e the CIP Clean In Place mode will have to be accessed to assure complete circulation of the PAA through the MRO through the large direct feed loop and back to the MRO WARNING Circulate the PAA solution only enough to achieve a minimum required amount of 0 5 at each water outlet in the loop system and at the Product Recovery water return to the CIP2 tank Once the minimum amount is achieved at all ...

Page 28: ... disinfecting solution down the drain taking care to avoid spills splashes or breathing the vapors CAUTION Splashing PAA concentrate may cause severe chemical burns 4 Rinse the emptied PAA container with tap water to remove all traces of the chemical Rinsing emptied containers is needed to protect waste handlers from accidental exposure to the chemical 5 Rinse the sink with tap water to remove res...

Page 29: ...ATER to the drain This minimizes bacterial growth and directs all the water to the drain rather than refill the storage tank FLUSH MODE 3 will cause all the water to be diverted to drain for each MEMBRANE AUTO FLUSH cycle On the other hand when an MRO is connected to a Direct Feed Loop the PRODUCT water should be directed into the loop during the MEMBRANE AUTO FLUSH cycle to keep the water in the ...

Page 30: ...first Setpoint RIGHT ARROW KEY Scrolls through Setpoints starting with last Setpoint UP ARROW KEY Increases value of Setpoint DOWN ARROW KEY Decreases value of Setpoint ENTER KEY Confirms entry of new Setpoint value ALARM SILENCE RESET KEY Push once for alarm silence and twice to reset system after a shutdown has occurred ACCESSING DISINFECT MODE Push and hold the left arrow key and then push the ...

Page 31: ... display Set point information can also be shown on this display OPERATING STATUS MESSAGES The operating status of the unit is shown on the top line of the display The following list describes the items shown for the operating status STANDBY The unit is in the STANDBY mode DELAY 99 The unit is in the RO start delay The number is the seconds remaining before the RO pump starts OPERATING The RO unit...

Page 32: ...will shut down on tank full TANK FULL will show on the display When the tank full condition clears the display will show TANK FULL 99 The number is the tank full restart time and the unit will restart when this delay times out For 2 level switch operation the upper switch is connected to the tank full high input and the lower switch is connected to the tank full low input When both switches are op...

Page 33: ...0 the unit will automatically clear the pressure fault and attempt to restart after this delay times out ALARM SILENCE When a shut down occurs that causes the audible alarm to sound the alarm can be silenced by pressing the Alarm Silence Reset key once The alarm will remain silenced for 3 minutes 180 seconds AAMI RD62 standard when the Alarm Silence Setpoint is programmed to the factory default 3 ...

Page 34: ...efer to Figure 6 2 for adjustment location SPAN To calibrate the Conductivity place the cell in a known standard solution Adjust the span adjustment for the correct reading If the cell is installed the unit can be calibrated by taking a sample from the PRODUCT TEST PORT and testing it with a known calibrated meter Adjust the span control until the reading matches the meter Refer to figure 6 for ad...

Page 35: ...MRO2X 5X Manual 31 98 0058 Rev R FIGURE 6 2 ...

Page 36: ...MRO2X 5X Manual 32 98 0058 Rev R FIGURE 6 3 ...

Page 37: ... 10 Auto Reset When a pressure fault shut down is active the system will attempt to restart after this delay If set to 0 system must be manually reset 0 99 minutes 0 Alarm Silence If the audible alarm is silenced after this delay the alarm will resound If set to 0 the alarm will remain silenced 0 99 minutes 3 TF Restart Delay When a tank full condition clears the system will restart after this del...

Page 38: ...TE If this Set point is changed the unit must be recalibrated 0 6 1 C2 Range Selects range of TDS Conductivity monitor 0 50 1 100 2 250 3 500 4 1000 5 2500 6 5000 NOTE If this Set point is changed the unit must be recalibrated and range components may need to be changed 0 6 4 C2 Limit When this value is met or exceeded the alarm lamp will light and high TDS Cond will show on the display To disable...

Page 39: ...inning Setpoint and the Right arrow key starts with the last Setpoint 3 The Up and Down arrow keys are used to increase or decrease the Setpoint value The value will change by 1 count each time a key is pressed If the key is pressed and held for 1 second the Setpoint value will change at a fast rate When the key is released the fast rate will be reset Pressing both the UP and DOWN ARROW keys toget...

Page 40: ...from outer shroud and remove inner terminals 3 Loosen the nut and run the float switch wires through the outer housing 4 Connect the High Tank float wires to contacts 1 6 Low Tank wires to contacts 2 7 Pretreatment Lockout wires to contacts 3 8 and RO Alarm Relay wires to contacts 4 9 5 Replace the inner terminals into the outer shroud 6 Tighten the nut replace the retaining screws and re install ...

Page 41: ...sician medical director A water sample should be sent to a lab yearly for a complete AAMI water analysis to ensure that the product water meets AAMI standards 5 MRO System product water quality is dependent on input water quality Actual product water quality may vary substantially from the value for specified input water The expected results for the user s water can only be verified on the basis o...

Page 42: ...g the procedure You may get wet 1 Place a container under the CHLORAMINE SAMPLE TEST PORT and slowly open the port to relieve the pressure on the MRO system 2 Place a container under the PRODUCT SAMPLE TEST PORT on the front panel and open to allow to drain 3 Open the back panel of cabinet 4 Press release button on Product Water Manifold Manifold located near top at back of left wall looking in ba...

Page 43: ...lockwise to give full reject flow The Pump pressure will be lower than normal during this rinse out cycle 3 Turn on the RO and allow water to run through the system for a minimum of 2 hours to rinse out the preservative During this operation verify that the membranes are leak free 4 Turn the knob on the Reject Flow Control Knob clockwise so that the Product Water flow and Reject Water flow are app...

Page 44: ...not plugged in Circuit breaker blown MRO in a FAULT condition Plug into electrical outlet Reset the breaker Check MRO controller display for FAULT condition and correct the FAULT System has power but no water flow Feed source not open Feed pressure 20 PSI Incoming hose kinked Prefilter clogged Circuit board relay is not operating Open Incoming Tap Water valve Increase pressure to 20 PSI Straighten...

Page 45: ...utlet gauge PSI must be 20 PSI and verify that the product flow flowmeter 1 GPM Test the solenoid Section 9 5 Replace the valve if it is defective see Section 9 6 Check PUMP PSI GAUGE to verify that it is within operating parameters Replace the pump assembly if necessary see Sections 9 3 and 9 4 Poor quality product water High Chlorine levels MRO not rinsed thoroughly Reject Flow Meter not properl...

Page 46: ...at 175 250 PSI Adjust Reject Water flow rate Check for restrictions in the PRODUCT WATER FOR DIALYSIS hose Check the feed pressure gauge on the dialysis machine If the dialysis machine does not have a pressure gauge install one inline Consult the Temperature Correction Chart to determine if the flow rate is normal in relation to the feed water temperature Check the prefilter gauges for pressure dr...

Page 47: ...w CPU active LED blinking If no is the green power LED DS1 Lit If no is the fuse OK If no replace the fuse If yes with a voltmeter verify power is applied to the power terminals L1 and L2 If power is applied to the power terminals and the other checks are OK the pc board is defective and should be replaced If no power is applied to the board check the power wiring to the system Display Blank Is th...

Page 48: ...No or incorrect conductivity reading Is sensor wired correctly If yes is sensor installed inline as shown in the tubing diagram on page 14 If yes verify correct Conductivity range Range correct Does unit calibrate OK If no disconnect green and white wires of sensor Does reading show 0 If yes reconnect wires and remove sensor from piping and dry Does reading show 0 If yes short terminals of cell to...

Page 49: ...feed tube from inlet header by loosening the hose clamp on the hose barb tee 4 Disconnect the pump discharge hose Remove the pump PSI tubing by loosening the compression fitting 5 Remove the clamp securing the pump assembly and remove the assembly from the cabinet 6 Pull the release tab from the top of the pump to allow the old pump to be removed from the housing Remove all fittings from the exter...

Page 50: ...le closing the valve will increase the product flow rate As the valve is being adjusted check product flow rate and pump pressure on the front of the unit The pump pressure is not to exceed 270psi and the flow rate cannot exceed 6 5gpm or damage to the pump and or over fluxing the membranes will occur 9 5 SOLENOID TEST PROCEDURE Feed Solenoid 1 With the MRO Off turn the Incoming Tap Water supply o...

Page 51: ...bing from the solenoid valve 7 Remove the valve from the MRO cabinet by unbolting it from the cabinet 8 Remove the hose tube fittings from the defective valve 9 Make sure that the flow direction arrow located on the side of the valve is pointing in the correct direction same as one being replaced 10 Install per the kit instructions 11 Reattach the hose tubing to the corresponding fittings on the v...

Page 52: ...MRO2X 5X Manual 48 98 0058 Rev R SECTION 11 SPARE PARTS LISTING ...

Page 53: ...MRO2X 5X Manual 49 98 0058 Rev R ...

Page 54: ...or Measuring High Range Paracetic Acid 97PX20501 Test Strips Renal Check 6 Bottles of 100 Strips each For Measuring Residual Peroxide 97PH20901 Test Strips pH 6 Bottles of 100 Strips each For Measuring pH Water Acid Base Bicarbonate Dialysate 97RC22101 WaterCheck RC 6 Bottles of 100 Strips each For Measuring Residual Chlorine 97CM20201 WaterCheck 2 6 Bottles of 100 Strips each For Measuring Low Le...

Page 55: ... the correct housing being used with your product reference the pictures below The 0013 0002 o ring kit contains a quantity of 2 of the 24 0029 o rings and a quantity of 2 of the 24 0028 u packing seals that are used on the Pureteck membrane housing for the 2 end caps Also included in the kit are a quantity of 4 of the 24 0018 o rings used on the Axeon membrane housing for the 2 end caps See the d...

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