AmeriWater MROX Series Manual

PN 98-0058
Rev. 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

CAUTIONARY SYMBOLS
Caution, risk of electrical shock!
Attention, risque de choc électrique!
Open by qualified service personnel only!
Ouverture par le personnel qualifié seulement!
Refer to this Operation and Maintenance Manual for instructions
and safety considerations.
Référez-vous au manuel des Opérations et Entretien pour
instructions et mesures de sécurité.
Caution, risk of danger!
Attention, danger 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 been tested to the requirements of CAN/CSA-C22.2 No. 61010-1,
second edition, including Amendment 1, or a later version of the same standard
incorporating the same level of testing requirements.
120 15

TABLE OF CONTENTS
SECTION 1, GENERAL INFORMATION ................................................................................................................................ 1
1.1 INTRODUCTION .......................................................................................................................................................... 1
1.2 RESTRICTION ON USE ................................................................................................................................................. 1
SECTION 2, TECHNICAL INFORMATION ............................................................................................................................. 2
2.1 SPECIFICATIONS.......................................................................................................................................................... 2
2.2 POWER RATINGS ........................................................................................................................................................ 3
2.3 MRO OUTPUT WATER QUALITY.................................................................................................................................. 3
2.4 TEMPERATURE CORRECTED MRO PRODUCTION RATES............................................................................................. 4
2.5 ENVIRONMENTAL/TRANSPORT CONDITIONS EXPECTED ........................................................................................... 4
SECTION 3, COMPONENTS AND SCHEMATICS ...................................................................................................................5
3.1 EXTERNAL FRONT VIEW.............................................................................................................................................. 5
3.2 INTERNAL REAR VIEW ................................................................................................................................................. 7
3.3 ELECTRICAL DIAGRAM, MRO2X, MRO3X, MRO4X &MRO5X...................................................................................... 9
3.4 FLUID DIAGRAM, MRO2X, MRO3X &MRO4X ........................................................................................................... 10
3.5 FLUID DIAGRAM MRO5X .......................................................................................................................................... 11
SECTION 4, MRO STARTUP & OPERATION....................................................................................................................... 12
4.1 CAUTION................................................................................................................................................................... 12
4.2 SAFETY FEATURES..................................................................................................................................................... 14
4.3 INITIAL STARTUP....................................................................................................................................................... 15
4.4 SYSTEM SHUTDOWN ................................................................................................................................................ 17
SECTION 5, DISINFECTING THE SYSTEM........................................................................................................................... 18
5.1 DISINFECTING THE SYSTEM ...................................................................................................................................... 18
5.2 DISINFECTING AN MRO AND “LARGE” LOOP SYSTEM............................................................................................... 23
5.3 AWORD 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.................................................................................................................... 36
SECTION 8, MAINTENANCE ............................................................................................................................................. 37
8.1 MAINTAINING THE SYSTEM ...................................................................................................................................... 37
8.2PT401 ANTI-SCALANT ............................................................................................................................................... 38
8.3 MEMBRANE MAINTENANCE INSTRUCTIONS............................................................................................................ 38
SECTION 9, TROUBLESHOOTING AND REPAIR ................................................................................................................. 40
9.1 TROUBLESHOOTING CHART..................................................................................................................................... 40
9.2 CONTROLLER TROUBLESHOOTING ........................................................................................................................... 43
9.3 PUMP REPAIR ........................................................................................................................................................... 45
9.4 INSTALLING AREPLACEMENT PUMP ASSEMBLY ...................................................................................................... 45
9.5 SOLENOID TEST PROCEDURE .................................................................................................................................... 46
9.6 SOLENOID VALVE REPLACEMENT ............................................................................................................................. 47
SECTION 10, WARRANTY................................................................................................................................................. 47
SECTION 11 SPARE PARTS LISTING .............................................................................................................................. 48
ROUTINE REPLACEMENT ITEMS (NON-DURABLE COMPONENTS) ..................................................................................... 50

MRO2X –5X Manual - 1 - 98-0058
Rev. R
SECTION 1, GENERAL INFORMATION
1.1 INTRODUCTION
Congratulations on your decision to use the MRO system! The MRO is a water treatment
system for use in hemodialysis applications. It is designed to pretreat and purify water resulting
in product water that meets or exceeds ANSI/AAMI RD62 requirements for use in making
dialysate for hemodialysis.
All models of the MRO are shipped completely assembled with required and optional water
treatment components. The model that you purchased was selected for the volume of water
needed and the analysis of your input water. This Operation Manual was written for the
MRO2X, MRO3X, MRO4X, and MRO5X models.
Your MRO system was thoroughly tested and in excellent condition when it was shipped to you.
However, because damage during shipment is possible, please unpack and carefully inspect
the MRO as soon as you receive it. Please notify AmeriWater®if any problems are
encountered.
The initials “PAA” are used occasionally throughout this manual to generically represent the
hydrogen peroxide/peroxyacetic acid solution that is to be used for disinfection. Peracidin®is
an example of this solution. The 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 p.m. eastern standard time. For after hours emergencies call 1-800-535-5585 and follow
the instructions on the recorded message. Our on-call technician will return your call as soon
as possible.
NOTE: This entire Operations Manual should be read before operating or servicing the
system. This Operations Manual should then be kept near the system and used as a
reference and troubleshooting guide.
WARNING: This Reverse Osmosis System (RO) contains a preservative solution to
prevent microbiological growth and freezing. Discard all product water for at
least two hours of operation before placing the RO in service.
CAUTION: No person should attempt to operate or service the AmeriWater MRO without
prior authorization, instruction, and training from AmeriWater and/or your
medical facility director.
1.2 RESTRICTION ON USE
Federal law restricts this device for sale by or on the order of a physician (medical director) for
use as a water treatment device for hemodialysis.

MRO2X –5X Manual - 2 - 98-0058
Rev. R
SECTION 2, TECHNICAL INFORMATION
2.1 SPECIFICATIONS
Ideal, minimum, and maximum
incoming water temperature
Min = 41° F (5° C) Max = 90° F (33° C)
Ideal Temperature = 77° F (25° C)
Prefilter gauge pressure (when the
MRO is running)
Minimum
Maximum
20 PSI
90 PSI (Pounds per Square Inch)
Pump pressure –
Minimum
Maximum
150 PSI
275 PSI
Water pressure to dialysis machine
Controlled by Loop return relief valve.
Maximum output of product water
@ 77°F (25°C), TDS<1000 ppm of
NaCl, & pump pressure of 200 psi.
MRO2X –4,320 GPD (16,654 LPD)
MRO3X –5,544 GPD (24,981 LPD)
MRO4X –7,401 GPD (33,308 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- ½” H x 42" W x 38" D
59”H x 26”W x 25 ½”D
Shipping Weight / Operation
Weight
MRO2X 340 - 390 lbs. / 265 lbs
MRO3X 370 - 420 lbs. / 300 lbs
MRO4X 400 - 450 lbs. / 335 lbs
MRO5X 430 - 480 lbs. / 370 lbs
Materials that Contact Product Water:
ABS
Polyethylene
Acrylic
Polypropylene
Carbon
Stainless Steel
Nylon
Thin Film Composite Membrane (polyimide)
PVC
Tygon
Polyester
All of the above listed materials meet FDA and/or NSF standards.

MRO2X –5X Manual - 3 - 98-0058
Rev. R
2.2 POWER RATINGS
Voltage
Frequency
Phase
Max Amp Draw
Controller
115
60 Hz
Single
10
2X-4X401 Pump
220
60 Hz
Single
12
2X-4X402 Pump
208
60 Hz
Three
8.8
2X-4X403 Pump
230
60 Hz
Three
7.6
2X-4X404 Pump
460
60 Hz
Three
3.8
5X402 Pump
208
60 Hz
Three
12
5X403 Pump
230
60 Hz
Three
10.1
2.3 MRO OUTPUT WATER QUALITY
The physician in charge of dialysis has the ultimate responsibility for selecting the maximum
allowable levels of chemical contaminants in the water, 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
Copper
Barium
Zinc
Aluminum
Arsenic
Lead
Silver
Cadmium
Chromium
Selenium
Mercury
Antimony
Beryllium
Thallium
99.5
99.5
98.0
97.0
87.0 - 93.0
60.0 - 75.0
99.5
98.0 - 99.0
96.0 - 98.0
98.0 - 99.0
98.0 - 99.0
94.0 - 96.0
96.0 - 98.0
93.0 - 96.0
96.0 - 98.0
96.0 - 98.0
94.0 - 96.0
96.0 - 98.0
96.0 - 98.0
96.0 - 98.0
96.0 - 98.0

MRO2X –5X Manual - 4 - 98-0058
Rev. R
2.4 TEMPERATURE CORRECTED MRO PRODUCTION RATES
MRO membrane performance is affected by water temperature. The Product Water Flow Rate
and Output decreases as the temperature of the Incoming Tap Water decreases.
2.5 ENVIRONMENTAL/TRANSPORT CONDITIONS EXPECTED
ENVIRONMENTAL CONDITIONS ANTICIPATED
This device is intended to be used 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
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;

MRO2X –5X Manual - 5 - 98-0058
Rev. R
SECTION 3, COMPONENTS AND SCHEMATICS
3.1 EXTERNAL FRONT VIEW

MRO2X –5X Manual - 6 - 98-0058
Rev. R
IDENTIFICATION OF COMPONENTS (EXTERNAL FRONT VIEW)
1. PRODUCT GPM: Rotameter that measures the flow of the Product Water For Dialysis
in gallons per minute (GPM).
2. SIDE ENTRY HOOD: External wire installation for float level switches, pretreat lockout
and RO alarm relay connectors; (See Section 7).
3. REJECT GPM WITH VALVE: Rotameter with valve to control the flow of the Reject
water to drain, in gallons per minute (GPM).
4. RECIRCULATING GPM: Rotameter with valve to control the flow of water being
recirculated back before the pump, in gallons per minute (GPM).
5. INCOMING TAP WATER TEST PORT: Valve for taking sample of feed water before the
RO.
6. INCOMING TAP WATER PSI: 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
solution and water for sanitizing the system; pre-marked with a red Fill Line to indicate
how much water to add.
11. REJECT PSI: Gauge that measures the pressure (in pounds per square inch) of the
water coming from reject side of the membranes.
12. PUMP PSI: Gauge that measures the pressure (in pounds per square inch) of the water
coming from the pump feeding the membranes.
13. PRODUCT WATER TEST PORT: Valve for taking sample of Product Water.
14. CONTROLLER: Control mechanism for the RO. See Section 6.