1

EASYpure™ ROReverse Osmosis System

SERIES 742

INSTALLATION,OPERATION,

SERVICE AND REPAIR MANUAL,AND PARTS LIST

LT742X16 • 8/20/97

Model VoltageD7421 120D7422 240D7422-33 230D7423 100 Low PressureD7428 120 Low PressureD7429 240 Low PressureD7429-33 230 Low Pressure

BARNSTEAD|THERMOLYNE CORPORATION

2Figure 1 EASYpure RO

Ventgard

BackDoorLatch

PressureGauge

IndicatorLED's

TankWaterLevelSight

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Table of Contents

Safety Information ........................................................................................................................................4Alert Boxes ................................................................................................................................................4Warnings....................................................................................................................................................4

Specifications................................................................................................................................................6Feedwater Requirements1 ........................................................................................................................6Product Water Specifications ....................................................................................................................6Electrical Requirements ............................................................................................................................6Environmental Conditions..........................................................................................................................6

Product Water Rejection Rates ....................................................................................................................6Declaration of Conformity ............................................................................................................................7Unpacking ....................................................................................................................................................8Installation ....................................................................................................................................................9

Locating your EASYpure RO ....................................................................................................................9General Usage ..........................................................................................................................................9Bench Mounting ......................................................................................................................................10Wall Mounting ..........................................................................................................................................11Utility Connections ..................................................................................................................................12

Feedwater Connection ........................................................................................................................12Reject Water Connection ....................................................................................................................13Tank Overflow Connection ..................................................................................................................14

Connections to Equipment Supplied By the EASYpure RO. ..................................................................15Installing The Prefilter and Membranes ..................................................................................................16

Prefilter Installation ..............................................................................................................................16Membrane Installation ..........................................................................................................................17

Electrical Connections ............................................................................................................................20Membrane Flush......................................................................................................................................20Set "Replace Prefilter" Indicator ............................................................................................................21

Operation ....................................................................................................................................................24Indicators ................................................................................................................................................24

Pressure Gauge ..................................................................................................................................24LED's ....................................................................................................................................................24

Maintenance ..............................................................................................................................................27Caring For Your EASYpure RO ..............................................................................................................27

System Sanitization..............................................................................................................................27Ventgard® Filter Replacement ............................................................................................................30General Cleaning Instructions..............................................................................................................30

Service and Repair ....................................................................................................................................31Normal Unit Operation ............................................................................................................................31

Fuse Replacement ..............................................................................................................................33Membrane Replacement ......................................................................................................................33Prefilter Replacement ..........................................................................................................................34

Parts List ....................................................................................................................................................35Recommended Spares ........................................................................................................................35Ordering Procedures ............................................................................................................................37

Troubleshooting ..........................................................................................................................................38Wiring Diagrams ........................................................................................................................................39Exploded View ............................................................................................................................................42Exploded View Key ....................................................................................................................................43One Year Limited Warranty ........................................................................................................................44

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Safety Information

Your Barnstead EASYpure RO has been designedwith function, reliability, and safety in mind. It isyour responsibility to install it in conformance withlocal electrical codes. For safe operation, pleasepay attention to the alert signals throughout themanual.

WarningsTo avoid electrical shock, always:

1. Use a properly grounded electrical outletof correct voltage and current handlingcapacity.

2. Do not mount the EASYpure RO directlyover equipment that requires electricalservice. Routine maintenance of this unitmay involve water spillage and subse-quent electrical shock hazard if improperlylocated.

3. Replace fuses with those of the same typeand rating.

4. Disconnect from the power supply prior tomaintenance and servicing.

To avoid personal injury:

WarningWarnings alert you to apossibility of personal injury.

CautionCautions alert you to apossibility of damage to theequipment.

NoteNotes alert you to pertinentfacts and conditions.

Alert Signals

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SAFETY INFORMATION

1. Do not use in the presence of flammable orcombustible materials; fire or explosion mayresult. This device contains componentswhich may ignite such materials.

2. Ensure all piping connections are tight toavoid leakage of chemicals.

3. Ensure adequate ventilation when usingchemicals for cleaning.

4. Follow carefully the manufacturers’ safetyinstructions on labels of chemical containersand Material Safety Data Sheets (M.S.D.S.).

5. Refer servicing to qualified personnel.

C. To ensure safe mounting:1. Wall composition and construction, as well

as fastener type, must be considered whenmounting this unit. The mounting surfaceand fasteners selected must be capable ofsupporting a minimum of 120 lbs.; inade-quate support and/or fasteners may result indamage to mounting surface and/or equip-ment. If you are unsure of mounting surfacecomposition, condition and construction, orcorrect fasteners, consult your buildingmaintenance group or contractor.

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Specifications

Dimensions30.5 cm W x 46.7 cm W x 46 cm H.

Feedwater Requirements1, 5Max. Temperature ........................48.8°CMin. Pressure (standard unit) ......30 psig(2.1 bar)Min. Pressure (low pressure unit) 9 psig(0.62 bar)Max. Pressure (standard unit)......100 psig(6.8 bar)Max. Pressure (low pressure unit)15 psig (1.1 bar)Inlet Flow Requirements ..............53.5 lphpH ................................................4 - 11TDS (Max. ppm as CaCO3) ........500Silt Density Index ........................<5%Free Chlorine................................<0.1 ppm2

Langlier Saturation Index ............NegativeTurbidity........................................<1 NTUIron (Total as Fe) ..........................<0.5 ppm

Product WaterSpecifications5Product Water Flow Rate ............12 lph3

% Recovery ..................................20%-26%

1 Feedwater suitability must be determined by a water analysis.2 Free chlorine removed by pretreatment cartridge.3 ±1.5 lph, feedwater at 25°C and 60 psig pressure.4 Membrane performance is dependent on condition, pressure, recovery, water temperature and water composition. Listed membrane

performance for a new membrane is based on optimum operating conditions of 60 psig, 15% recovery, 25°C (77°F) feedwater tempera-ture and feedwater composition of a maximum of 500 ppm NaCl at a pH of 6.0-6.5.

5 Membrane performance, flowrates and recovery information are nominal values. Variations in the feedwater temperature, pumps andreject orifice may slightly alter these results.

Membrane Rejection Rates 4Monovalent Ions ..........................90-95%Polyvalent Ions ............................95-99%Particles........................................>99%Microorganisms ............................>99%Dissolved Organics (300 MW) ....>99%Reject Water Flow Rate 650 ml/min

at60 PSIG ±5PSIG

Electrical RequirementsModel D7422-33 - 230 VAC ±10%, 47-63 HzModel D7429-33 - 230 VAC ±10%, 47-63 Hz

Environmental ConditionsOperating: 17°C - 27°C; 20% - 80% relative humidity, non-condensing. Installation Category II (over-voltage) in accordance with IEC 664. Pollution Degree 2 in accordance with IEC

664. Altitude limit: 2,000 meters.Storage: -25°C - 65°C; 20% - 80% relative

humidity.

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Declaration of ConformityBarnstead|Thermolyne hereby declares under its sole responsibility that this product con-forms with the technical requirements of the following standards:

EMC: EN50081-1 Generic Emission Standard; EN 50082-1 Generic Immunity Standard.

Safety: IEC 1010-1-92 Safety requirements for electrical equipment for measure-ment, control and laboratory use; Part 1: General Requirementsper the provisions of the Electromagnetic Compatibility Directive 89/336/EEC, as amendedby 92/ 31/EEC and 93/68/EEC, and per the provisions of the Low Voltage Directive 73/23/EEC, as amended by 93/68/EEC.

The authorized representative located within the European Community is:European managerBarnstead|ThermolyneSaarbrückener Str. 248D-38116 BraunschweigGermany

Copies of the Declaration of Conformity are available upon request.

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Unpacking

Carefully remove the unit from its shipping contain-er.

The following items are shipped separately andmust be removed from the packaging prior to dis-carding the packaging:

1. EASYpure RO Ventgard air filter.

2. Power cord.

3. Pump interlock cord.

4. Membrane bypass tubing.

The following items are located inside the mem-brane access door:

1. Feedwater tubing.

2. Reject water tubing.

3. Product tubing to connect accessoryreservoir.

4. Product tubing to connect anotherEASYpure unit.

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Locating your EASYpure ROYour EASYpure RO must be located within six feetof an electrical outlet appropriate for your unit, with-in five feet of your feedwater supply and close toan atmospherically vented drain. If you are usingthe accessory 30 Liter Reservoir (Part NumberTY742X2A), the tank overflow on the EASYpureRO's integral 6.5 liter tank should be located belowthe level of the storage reservoir's overflow. Thiswill ensure that the EASYpure RO's internal floatswitches will control the operation of the system. Ifthe EASYpure RO is to be used with the accesso-ry 30 Liter Reservoir, the reservoir must not bemounted farther than 4 feet away from theEASYpure RO. The EASYpure RO Bench Stand(Part Number D7424) will be required for a benchmounted installation with an accessory 30 LiterReservoir.

General usageDo not use this product for anything other than itsintended usage.

Do not mount the EASYpureRO directly over equipmentthat requires electrical ser-vice. Routine maintenance ofthis unit may involve waterspillage and subsequentelectrical shock hazard ifimproperly located.

Warning

Installation

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INSTALLA TION

Bench MountingIf you are bench mounting the EASYpureRO without the accessory 30 Liter Reservoir(Part Number TY742X2A), simply place theEASYpure RO on a bench.

If you are bench mounting the EASYpureRO and using it in conjunction with theaccessory 30 Liter Reservoir (Part NumberTY742X2A), the EASYpure RO Bench Stand(Part Number D7424) must be added to theEASYpure RO to ensure automatic opera-tion. Install the EASYpure RO Bench Standas follows:

1. Remove the 4 feet from theEASYpure RO and retain thescrews.

2. Place the EASYpure RO on theBench Stand so that the screwholes where the feet were attachedline up with the holes in the BenchStand.

3. Install the 4 screws removed instep 1 through the bottom of theBench Stand and into theEASYpure RO.

4. Install the accessory 30 LiterReservoir according to the instruc-tions in the accessory 30 LiterReservoir manual.

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Wall MountingIf you are wall mounting the EASYpure RO usingthe optional wall mounting bracket, mount the unitas follows:

Wall Mounting the EASY pure RO 1. Install the wall bracket (Part Number

D7384) on the wall in a location that isaccessible to water, power and an atmos-pherically vented drain, and that is conve-nient to use. A minimum of 4 fastenersmust be used.

2. Remove the 4 feet from the EASYpureRO. Retain the screws.

3. Place the EASYpure RO on the wallbracket swivel base so that the screwholes where the feet were attached line upwith the holes in the wall bracket. Thereare guides on the wall bracket that willmate with the EASYpure RO.

INSTALLA TION

Figure 2 Wall Mounting the EASYpure RO

Wall composition and con-struction, as well as fastenertype, must be consideredwhen mounting this unit. Themounting surface and fasten-ers selected must be capableof supporting a minimum of120 lbs.; inadequate supportand/or fasteners may result indamage to mounting surfaceand/or equipment. If you areunsure of mounting surfacecomposition, condition andconstruction, or correct fas-teners, consult your buildingmaintenance group or con-tractor.

Do not mount the EASYpureRO directly over equipmentthat requires electrical ser-vice. Routine maintenance ofthis unit may involve waterspillage and subsequent elec-trical shock hazard if improp-erly located.

Note If you are bench mounting theunit, proceed to UtilityConnections.

Warning

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4. Install the four screws removed in step 2through the bottom of the wall bracket andinto the EASYpure RO.

Utility ConnectionsThe EASYpure RO is supplied with four separatelengths of tubing to be used for feedwater, rejectwater, feed to accessory storage reservoir and feedto another EASYpure unit's connections. Eachlength of tubing is six feet long and has the neces-sary fittings installed.

Feedwater Connection1. Locate the length of 3/8" O.D. tubing pro-

vided with a quick disconnect insert onone end and a 3/8" O.D. X 1/4 NPT tubingadapter on the other.

2. Insert the quick disconnect insert into thefeedwater inlet on the EASYpure RO.(See Figure 3 for location.) Install the tub-ing adapter onto your incoming water line.We recommend a customer supplied shutoff valve be installed in your feed waterline.

INSTALLA TION

Power EntryModule/

ON-OFF Switch

ProductWater

Outlets

PumpInterlock

Tank Overflow

Reject Water Connection

Feedwater Inlet

Figure 3 Connections

Note We recommend a customersupplied shut off valve beinstalled in your feed waterline.

Note The quick disconnect fittingshave built-in shutoff valves inboth the coupling and theinsert.

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Reject Water Connection1. Locate the reject water tubing. This is the

piece of 3/8" O.D. tubing that has anadapter on one end and no connector onthe other end. Remove the nut, grab ring,backup ring and o-ring from the rejectwater fitting located at the lower right ofthe unit. (See Figure 4 for part identifica-tion and Figure 3 for fitting location.)

2. Thread the nut, grab ring and backup ringon the reject adapter. Do not use the o-ring at this time.

3. Push the tubing through the hex nut until itbottoms out in the adapter.

4. Remove the adapter nut and tubing. Placethe o-ring over the tubing. Be careful notto push the backup ring or grab ring fur-ther back on the tubing when installing theo-ring. Connect the tubing to the rejectconnection on the EASYpure RO.

INSTALLA TION

Figure 4 Typical Polypropylene Tubing Adapter Installation

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5. Route the other end of the rejectwater tubing with the adapterinstalled to an atmosphericallyvented drain. Ensure there are nokinks in the tubing and that it pro-ceeds in a downward plane.

6. If possible, use the tubing adapterto permanently install the rejectwater tubing in the drain.

Tank Overflow Connection1. Refer to Figure 3 and attach a cus-

tomer supplied hose barb connec-tor and 5⁄8" O.D. tubing to the tub-ing located at the lower right of theunit as you look at the rear of theunit.

2. Route tubing to an atmosphericallyvented drain. Ensure there are nokinks in the tubing and that it pro-ceeds in a downward plane.

INSTALLA TION

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Connections to EquipmentSupplied By the EASYpureRO.Your EASYpure RO also includes twolengths of tubing with quick disconnectinserts attached. One is 1/4" O.D. tubing andone is 3/8" O.D. tubing. Use the 1/4" tubingto feed directly from the EASYpure RO toanother EASYpure unit. Use the 3/8" O.D.tubing to feed the accessory 30 LiterReservoir if one is being used.

1. Install the quick disconnect insertattached to the tubing into one ofthe product water quick disconnectcouplings on the EASYpure RO.(See page 11.)

2. Install the other end of the tubinginto the unit being fed by theEASYpure RO according to theinstructions in that unit's manual.

3. Locate the pump interlock cordsupplied with the EASYpure RO.Plug one end of the pump interlockcord into the pump interlock on theEASYpure RO. (See page 11.)Remove the jumper plug from thepump interlock on the otherEASYpure unit and save it forfuture use. Plug the other end ofthe cord into the pump interlock onthe other EASYpure unit.

INSTALLA TION

Do not connect the product watertubing to a connected EASYpure unituntil you have completed the mem-brane flush procedure for theEASYpure RO.

Note

The product water quick dis-connect inserts can beinstalled in either product waterquick disconnect coupling. Thequick disconnect ends of theinserts are the same size.

Note

Note If you are not now feeding anotherEASYpure unit, save the pumpinterlock cord for possible futureuse.

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Installing The Prefilter andMembranes

1. Disconnect the unit from the powersupply.

2. Pull the rear side of the door latchup and toward the front of the unituntil the front of the door latchunhooks.

3. Lift the front of the door latch andopen door.

Prefilter InstallationChlorine and particulates will damage yourmembranes, resulting in premature mem-brane failure. Therefore, your EASYpure ROuses an extruded carbon prefilter to removechlorine and particulates from your feedwater. Install the prefilter as follows:

1. Remove a new prefilter (PartNumber D50246) from its plasticbag.

INSTALLA TION

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2. Wet the o-rings on both end capsof the prefilter.

3. Insert the upper end cap into uppercenter position until it bottoms outin the connector. (The upper endcap is the one with the right angleturn and the two flanges.) The twoflanges on the end cap slide downon each side of the keyway wall.(See Figure 7.)

4. Lower the prefilter and insert thelower end cap into the lower centersocket until it is firmly seated.

Membrane Installation1. Remove the membrane bypass

tubing from the EASYpure RO (seeFigure 5). The membrane bypasstubing may be stored inside theEASYpure RO case for easyaccess when needed for the sys-tem sanitization procedure.

INSTALLA TION

Figure 5 Membrane Bypass Tubing Installed

Membrane By-Pass Tubing

Note The membrane by-pass tubing willbe needed for sanitizing theEASYpure RO. Do not discard it.

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2. Remove an RO membrane car-tridge (Part Number D7425) fromits plastic bag.

3. Remove the nut, stainless steelgrab ring, backup ring and o-ringfrom the connectors on the mem-brane.

4. Connect the product and rejecttubes in the right-hand membraneposition on the EASYpure RO tothe product and reject outlet con-nectors on the RO membrane car-tridge. Ensure that the o-ring, back-up ring, stainless steel grab ringand nut are in place on the productand reject tubing on the EASYpureRO (see Figure 4, page 12).Ensure that the product tube isconnected to the product connectorand the reject tube is connected tothe reject connector. Hand-tightenthe connections.

INSTALLA TION

Figure 6 Proper Position of Prefilter and Membranes

Prefilter

Right-handMembranePosition

Left-handMembrane

Spring MetalMembrane Retainer

Do not use a wrench on thetubing adapter connections.A sufficiently tight connectioncan be made by hand.

Caution

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5. Wet the o-rings on the bottom of the mem-brane cartridge. Insert the RO membranecartridge into the right-hand spring metalretainer.

6. Slide the RO membrane cartridge downuntil the lower end cap is firmly seated inthe lower right-hand socket.

7. Remove the second RO membrane car-tridge (Part Number D7425) from its plas-tic bag. Install the second membrane inthe left hand membrane position followingthe instructions in steps 3-6 above for theleft hand connections.

8. Close and latch membrane access door.

INSTALLA TION

Figure 7 Prefilter and Membrane Connections

Product

Reject

Flanges oneither side ofkeyway wall

Product

Reject

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Electrical Connections1. Plug power cord into the unit's power

entry module.

2. Connect your EASYpure RO to a properlygrounded outlet of correct voltage andcurrent handling capacity.

Membrane Flush1. If not already done, disconnect the prod-

uct water tubing from any EASYpure unitconnected to your EASYpure RO. Directthe product water tubing to drain. If youare feeding an accessory 30 LiterReservoir, disconnect the product watertubing from the accessory 30 LiterReservoir. Direct the product water tubingto drain.

2. Disconnect the pump interlock cord fromthe other EASYpure unit.

3. Open the customer-supplied feed watervalve.

INSTALLA TION

Power EntryModule

Figure 8 Power Cord Attachment

Use a properly groundedelectrical outlet of correctvoltage and current handlingcapacity.

Warning

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4. Turn the unit on by depressing theON/OFF switch on the power entry mod-ule in the rear of the EASYpure RO (seeFigure 8, page 19).

5. Allow the unit to operate for approximatelyone hour, sending all water produced todrain.

6. Turn unit power off. Reconnect the prod-uct water tubing to the other EASYpureunit. Reconnect the product water tubingto the accessory 30 Liter Reservoir.Reconnect the pump interlock cord to theother EASYpure unit.

Set "Replace Prefilter" Indicator The extruded carbon prefilter both filters particu-lates and absorbs free chlorine out of your feedwa-ter supply. After a certain point, the extruded car-bon will become saturated with chlorine and willcease to effectively protect your membrane fromthe damaging effects of chlorine. The "ReplacePrefilter" Indicator alerts you when the prefilterrequires changing.

INSTALLA TION

Switch Panel

Figure 9 Switch Panel Location

Membrane Reset

MembraneBypassTubing

Prefilter Reset

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To set the "Replace Prefilter" Indicator for yourfeedwater supply:

1. Determine the free-chlorine level of yourfeedwater (in ppm) using a commerciallyavailable test kit.

2. Disconnect the unit from the power supply.

3. Pull the rear side of the door latch up andtoward the front of the unit until the frontof the door latch unhooks.

4. Lift the front of the door latch and opendoor.

5. Locate the switch panel on the upper leftsidewall of the membrane compartment.(See Figure 9 for location.)

6. The four rocker switches on the switchpanel are numbered from left to right asyou face the switch panel. Each switchhas two possible positions: 1) top pressedin or 2) bottom pressed in. (See Figure10.)

Set the switches for your free-chlorine level asfollows:

INSTALLA TION

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Free-Chlorine

Range (ppm) Switch 1 Switch 2 Switch 3 Switch 4

0.05-0.80 ppm bottom in bottom in bottom in top in

0.80-1.40 ppm* top in top in bottom in top in

More than 1.40 ppm top in bottom in top in top in

Close and latch the membrane access door. YourEASYpure RO is now ready for operation.

INSTALLA TION

* Factory set.

Figure 10 Switch Panel Settings

1 2 3 4

Free Chlorine1.4 ppm - Max.

Free Chlorine0.8 - 1.4 ppm

Free Chlorine0.05 - 0.80 ppm

1 2 3 4 1 2 3 4 1 2 3 4

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Your EASYpure RO was designed to operate auto-matically. The unit will automatically turn off whenthe tank is full and will restart when the tank emp-ties slightly. The unit will restart automatically for 5minutes every 3 hours 55 minutes of inactivity toflush the membrane during periods of non-use.This flush water will automatically run to the drain.Please ensure that the unit remains on — if youneed to de-energize the system for longer then 48hours contact Barnstead|Thermolyne customer ser-vice. If water is not drawn from the tank for 72hours, empty tank and refill with new RO waterbefore using.

Indicators(See Figure 11, page 25.)

Pressure GaugeOn initial start-up, the pressure gauge will brieflyindicate the feedwater pressure. Once the pumpstarts, the pressure gauge will indicate the pres-sure after the pump, which is the pressure on thereverse osmosis membranes. During normal opera-tion, this gauge should read 55-65 psi.

LED'sThere are five indicator lights on the EASYpure ROfront panel. Their significance is as follows:

Indicator Lights These lights alert you of theoperating status of the unit. If your attention is re-quired to correct a problem or maintain the system,it will be indicated on the display (periodicallycheck the panel to see if attention is required). Alisting of the various indicator lights and theirmeanings follow:

Operation

Warning Do not use in the presence offlammable or combustiblematerials; fire or explosionmay result. This device con-tains components which mayignite such materials.

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1. Reservoir full : Your EASYpure RO isequipped with a float switch that will de-energize the unit when the reservoir isfull. This light will illuminate, indicatingthe unit is in a standby mode. When thereservoir’s water level is lowered aboutfive inches, the unit will re-energize andthe light will turn off.

2. Low pressure : If the incoming waterpressure at the pump drops below 5psig, a switch will de-energize thepump. This switch senses the pressureafter the prefilter and before the pump.The EASYpure RO system will try torestart after it initially senses low pres-sure. If it senses low pressure the sec-ond time, it will switch the EASYpureRO off and will illuminate the low pres-sure light. Once the fault is corrected,the EASYpure RO must be manuallyrestarted. (Power down and power up).

3. Replace prefilter : The carbon used inthe extruded carbon cartridge has afinite life. The function of this cartridgeis to remove particulates and chlorine

OPERATION

IndicatorLights

Figure 11 Display

Pressure Gauge

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from the feedwater. The "ReplacePrefilter" Indicator notifies youwhen the prefilter requires chang-ing. The frequency with which thislight will illuminate will vary depend-ing on the feedwater free chlorinelevel you have selected on theswitch panel on the inside rear leftside of the case. For proper opera-tion and protection of your mem-brane, it is important that you accu-rately select your feedwater freechlorine level on the switch panel.

4. Service membrane : If the percentrejection rate of the membrane fallsbelow 65% the light will illuminate,indicating membrane difficulty. Inmost cases replacement of themembranes is called for. Refer totroubleshooting guide for further in-formation. At times during operationthe light may illuminate. This maybe caused by feedwater variation orextended periods of non-use. Thisshould correct itself within a shorttime.

5. Replace membrane : Even underoptimal conditions, your EASYpureRO reverse osmosis membraneshave a finite life span. This indica-tor illuminates when your mem-branes have reached the end oftheir rated service life. Refer topage 32 for the proper replacementprocedure.

OPERATION

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Caring For Your EASYpure RO With proper care, your EASYpure RO will giveyou consistently pure water. To ensure contin-ued good service, regularly perform the follow-ing procedures.

System SanitizationThe frequency of sanitizing depends on therate and amount of contamination buildup.

The membrane cartridges must be removed.The EASYpure RO can easily be completely

sanitized by utilizing the sanitization cartridge(Part Number D50245). To accomplish this, fol-low these step-by-step instructions:

1. Turn off the EASYpure RO. Turn offan EASYpure unit or NANOpure fedby the EASYpure RO. Depressurizethe EASYpure unit or NANOpure byopening the drawoff valve (auxiliarydrawoff on NANOpure) and allowingwater to flow until no more exits theunit. Disconnect the EASYpure unit orNANOpure from the power supply.

2. Close the inlet valve on theEASYpure unit. Disconnect from theEASYpure RO the tubing attachingthe EASYpure RO to the EASYpureunit. Disconnect this same tubingfrom the EASYpure unit. Direct oneend of the tubing to drain. Reattachthe other end to the EASYpure RO.Allow the tank to drain.

Maintenance

Warning Disconnect from the powersupply prior to maintenanceand servicing.

Refer servicing to qualifiedpersonnel.

Ensure all piping connectionsare tight to avoid leakage ofchemicals.

Ensure adequate ventilationwhen using chemicals forcleaning.

Follow carefully the manufac-turers’ safety instructions onlabels of chemical containersand Material Safety DataSheets (M.S.D.S.).

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3. If you are feeding a NANOpure, removefrom the NANOpure the tubing from the"T" on the accessory 30 Liter Reservoir.Drain the accessory 30 Liter Reservoir byopening the spigot.

4. Disconnect the quick disconnect insert(s)and product water tubing attached to theEASYpure RO.

5. Remove the pretreatment cartridge andmembrane cartridges.

6. Install the membrane bypass tubing onthe top membrane connectors.

7. Install the bottom bypass into the twomembrane inlets.

a. Wet the o-rings on the connectors ofthe bypass tubing.

b. Insert the connectors into the twomembrane inlets. Ensure that themetal clamps line up with the slotslocated on the floor of the cabinet.

c. Rotate the connectors to lock themetal clamps into position.

8. Install the sanitization cartridge in the pre-treatment cartridge position.

9. Power up the EASYpure RO and allow thewater to move from the inlet line, throughthe sanitization cartridge, and through therest of the system. The unit may turn offas a result of the low pressure conditiononce or twice during this step. If thisoccurs, power down and power back upagain.

MAINTENANCE

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10. Allow the system to operate normally untilthe reservoir is full and the unit goes intostandby.

11. Allow the solution to sit in the system for30-45 minutes.

12. Reconnect the quick disconnect insert(s)and product water tubing removed in step4. Direct the tubing to drain and drain thestorage reservoir. After the reservoir isempty, disconnect the quick disconnectinsert(s) and product water tubing again.

13. Remove the top and bottom membranebypass tubing assemblies and retain themfor future use. Remove the sanitizationcartridge and discard it.

14. Install a new pretreatment cartridge.Reinstall existing membrane cartridges ifthey were operating properly.

15. Reset pretreatment timer. (See “PrefilterReplacement.”)

16. Operate normally. Drain the first tankful ofwater as described in step 12.

17. Reconnect the product water tubing to theEASYpure unit. Reconnect the productwater tubing to the NANOpure. Reconnectthe EASYpure unit or NANOpure to thepower supply.

MAINTENANCE

Note Reinstalling your old mem-branes may reintroduce bac-teria into your EASYpure ROsystem.

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MAINTENANCE

Ventgard ® Filter ReplacementThe materials in the Ventgard® have a limit-ed capacity. The Ventgard® should bereplaced every 90 days or after 1,000 gal-lons have been drawn from the storage tank.A Ventgard® may be stored in a cool, dryplace almost indefinitely, provided the plasticbag has not been opened. Take the oldVentgard® off the top of the EASYpure ROand install a fresh one. (See Figure 12 forlocation.)

General Cleaning InstructionsWipe exterior surfaces with lightly dampenedcloth containing mild soap solution.

Ventgard®

Figure 12 Ventgard® Location

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Normal Unit OperationBelow is a brief description of the normal automaticoperation of the EASYpure RO. If the unit does notoperate as described below, refer to the Trouble-shooting Guide.

When you activate the power switch, the follow-ing events will occur:

1. All LEDs light momentarily to indicate thatthey work.

2. After approximately 5 seconds, the auto-matic solenoid valves are energized. Theinlet valve opens, supplying the EASYpureRO with water. The flush valve alsoopens, diverting virtually all the water todrain.

3. After approximately 20 seconds, the pumpenergizes. The majority of the water pro-duced goes to drain.

4. 10 seconds after the pump energizes, thepressure switch begins monitoring theincoming water pressure.

5. After 3 minutes, the flush solenoid valvecloses and the EASYpure RO begins mak-ing product water and sending it to thestorage reservoir.

6. The unit begins to monitor membrane per-formance and the storage reservoir floatsbegin to monitor tank levels 5 secondsafter the flush solenoid valve closes.During operation, the storage reservoirfloats will: 1) switch the EASYpure RO intostandby mode (pump off) when the stor-age reservoir is full, 2) switch theEASYpure RO back into water productionmode (pump on) when the reservoir level

Service and Repair

Warning Disconnect from the powersupply prior to maintenanceand servicing.

Refer servicing to qualifiedpersonnel.

Ensure all piping connectionsare tight to avoid leakage ofchemicals.

Ensure adequate ventilationwhen using chemicals forcleaning.

Follow carefully the manufac-turers’ safety instructions onlabels of chemical containersand Material Safety DataSheets (M.S.D.S.).

32

drops approximately five inches, and 3)switch off any EASYpure unit connected tothe EASYpure RO when the water level inthe EASYpure RO's storage reservoir istoo low to ensure an adequate water sup-ply to the other EASYpure unit (thisrequires the pump interlock cord to beinstalled).

7. The microprocessor tracks operating timeand at pre-selected intervals illuminatesthe “replace filter” light, signifying that thecarbon cartridge should be replaced.

8. When the reservoir is full and theEASYpure RO is in standby mode, a clockis activated which energizes theEASYpure RO for five minutes every threehours and fifty-five minutes. This ensuresthat water will not stagnate on the mem-brane surface. The majority of the waterproduced during this five-minute cycle willdivert to the drain.

SERVICE AND REPAIR

33

Fuse Replacement1. Disconnect the EASYpure RO from its

power source. Remove the outer cover.

2. Locate the fuse holder, part of the powerentry module (see Figure 13 for location),and remove.

3. Remove the burned out fuse(s) andreplace with one(s) of equal size and rat-ing.

Membrane ReplacementA variety of factors will determine the service life ofyour EASYpure RO membranes. With proper main-tenance, the membranes should last approximatelyone year for normal usage.

When either the "Service Membrane" or the"Replace Membrane" Indicator lights, use the fol-lowing procedure to replace the membranes:

1. Disconnect the EASYpure RO from itspower source.

2. Remove the membranes and discard.

SERVICE AND REPAIR

Fuse HolderLocation

Figure 13 Fuse Holder Location

Warning Replace fuses with those ofthe same type and rating.

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3. Install and flush new membranesusing the procedure for membraneinstallation and flush listed under"Membrane Installation."

4. After you replace the membranes,press the "Replace Membrane"Indicator reset button, located direct-ly below the "Replace Prefilter"Indicator reset button, which is inturn directly below the switch panelon the upper left sidewall of themembrane compartment. (SeeFigure 9, page 21, for location.)

Prefilter ReplacementIt is impossible to exactly predict prefilter lifein the EASYpure RO. Due to varying amountsof particulates and chlorine in feedwater, lifeof the prefilter will vary. Replace the prefilterwhen decreased water flow or repeated "LowPressure" shutdowns indicate that particu-lates have clogged the filter or when the"Replace Prefilter" Indicator lights, indicatingthat the prefilter has ceased to reliablyremove chlorine from the feedwater.

1. Disconnect the EASYpure RO fromits power source.

2. To replace the prefilter, remove theold prefilter, then follow the proce-dures in "Prefilter Installation" toinstall a new one.

3. After you replace the prefilter, pressthe "Replace Prefilter" Indicator resetbutton, located directly below theswitch panel on the upper left side-wall of the membrane compartment.(See Figure 9, page 21, for location.)

Note This reset button is a twoposition button; it will beeither up or down. Press itonly once, to change itsposition. (I.e. if it was upbefore you changed the pre-filter, you should press itdown after you change theprefilter. If it was downbefore you changed the pre-filter, you should press itafter you change the prefilterto allow it to come up.)

This reset button is a twoposition button; it will beeither up or down. Press itonly once, to change itsposition. (I.e. if it was upbefore you changed themembranes, you shouldpress it down after youchange the membranes. If itwas down before youchanged the membranes,you should press it after youchange the membranes toallow it to come up.)

Note

SERVICE AND REPAIR

35

This section contains parts list information for the EASYpure RO Reverse OsmosisSystem. When ordering spare parts, specify part number (Cat. No.) and quantity desired.Also supply part number and serial number (located on the unit). When ordering electricalparts, provide voltage and frequency information.

Recommended SparesConsumables Consumable parts are those required to support the day-to-day operationof this equipment. Barnstead|Thermolyne establishes two types of consumables; thoseitems that must be periodically replaced to maintain performance (filters, resin cartridges,etc.) and other items of limited service life (indicator lights, fuses, etc.) that you can expectto replace on a more or less random basis. Wherever possible, Barnstead|Thermolynerecommends the frequency of replacement or provides information on service lifeexpectancy. You thus may calculate a replacement schedule based on your usage pattern.

The replacement of consumable parts is discussed in the Maintenance section of thismanual to assist you in accomplishing your own service.

CONSUMABLESDescription Cat. No. QuantityPretreatment cartridge D50246 3Ventgard ® Filter Element (EASY pure RO) CV742X5A 2Fuse 120V & 100V 04455 2Fuse 230V (Fuse T ype (T) 2a 250V) 5120-0025 2Fuse 240V FZX37 2Sanitization Cartridge D50245 1

Parts List

36

Safety Stock For critical applications where performance with MINI-MUM downtime is required, Barnstead|Thermolyne recommends that youmaintain a local stock of those parts listed under “General Maintenance”and “Safety Stock.” In the event of component failure, this safety stockcan be drawn upon by you or Barnstead|Thermolyne technicians, there-by, avoiding unnecessary delays in delivery of replacement parts.

SAFETY STOCKDescription Cat. No. QuantityPump 100 volt low pressure PU742X3A 1Pump 120 volt PU742X1A 1Pump 120 volt low pressure PU742X3A 1Pump 230 volt PU742X2A 1Pump 230 volt low pressure PU742X4A 1Pump 240 volt PU742X2A 1Pump 240 volt low pressure PU742X4A 1Main PC Board PC742X2A 1Pressure Switch 01407 1Solenoid V alve 100 & 120 Volt RY631X1A 1Solenoid V alve 230 Volt RY631X3A 1Solenoid V alve 240 Volt RY631X3A 1Pressure Regulating V alve* 02280 1Reject Flow Restrictive orifice PMX101 1Membrane D7425 2

* Not included on low pressure units, Model numbers D7423, D7428, D7429andD7429-33.

PARTS LIST

37

Please refer to the Specification Plate for thecomplete model number, serial number, and se-ries number when requesting service, replace-ment parts or in any correspondence concerningthis unit.

All parts listed herein may be ordered from theBarnstead|Thermolyne dealer from whom youpurchased this unit or can be obtained promptlyfrom the factory. When service or replacementparts are needed we ask that you check first withyour dealer. If the dealer cannot handle yourrequest, then contact our Customer Service De-partment at 319-556-2241 or 800-553-0039.

Prior to returning any materials toBarnstead|Thermolyne Corp ., please contactour Customer Service Department for a “ReturnGoods Authorization” number (RGA). Material re-turned without a RGA number will be refused.

Ordering Procedures

38

Troubleshooting

Problem Possible Causes SolutionsEASYpure ROcompletely inactive(Controls not operating)

No electrical power toEASYpure RO

Ensure EASYpure ROpower cord is installedand connected to livepower.

Blown fuses Check/Replace fuses.Refer to FuseReplacement forprocedure.

No water flowing (lowpressure indicator lightilluminated)

Feedwater supply valveclosed

Open feedwater supplyvalve

Prefilter plugged Replace prefilterSolenoid valve not open Replace solenoid valveFeed pressure belowspecification

Increase pressure

Illumination of servicemembrane light.Decrease in % rejection

Improperly installedmembrane

Insure membrane isinstalled properly

Fouled membrane Replace membraneDecrease in systemproductivity

Decrease in watertemperature

If decline in flowrate isunacceptable installfeedwater temperaturevalve to elevate watertemperature

Membrane fouled Replace membraneLow incoming waterpressure

Ensure prefilter is notblocked - Increaseincoming water pressure

Low membraneoperating pressure

Increase operatingpressure

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Wiring Diagrams

Figure 14 Wiring Diagram 100 Volt

40

WIRING DIAGRAMS

Figure 15 Wiring Diagram 120 Volt

41

WIRING DIAGRAMS

Figure 16 Wiring Diagram 230 Volts

42

EASYpure RO Exploded View

43

Exploded View Key

Key Part # Description1. PU742X1A Pump 120 Volt

PU742X2A Pump 230 VoltPU742X2A Pump 240 VoltPU742X3A Pump 100 Volt & 120 Volt low pressurePU742X4A Pump 230 Volt low pressurePU742X4A Pump 240 Volt low pressure

2. PC742X2A Main PC Board3. 01407 Pressure Switch4. RY631X1A Solenoid Valve 100/120 Volt

RY631X3A Solenoid Valve 230 VoltRY631X3A Solenoid Valve 240 Volt

5. 02280 Pressure Regulating Valve* 6. PMX101 Reject Flow Regulating Orifice (on side of rear case)7. PM703X7A Overflow Valve8. SW742X1A Float Switch, Reservoir9. MEX172 Pressure Gauge10. PC682X4A PC Board11. CE742X1A Interlock Receptacle12. CEX183 Power Entry Module13. E631X1A Cell Assembly14. PC742X1A PC Board15. CAX44 Powerline Filter16. PC631X3A PC Board

* Not included on low pressure units, Model numbers D7423, D7428, D7429 and D7429-33.

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One Year Limited Warranty

Barnstead|Thermolyne Corporation warrants that if a product manufactured byBarnstead|Thermolyne and sold by it within the continental United States or Canadaproves to be defective in material or construction, it will provide you, without charge, for aperiod of ninety (90) days, the labor, and a period of one (1) year, the parts, necessary toremedy any such defect. Outside the continental United States and Canada, the warrantyprovides, for one (1) year, the parts necessary to remedy any such defect. The warrantyperiod shall commence either six (6) months following the date the product is sold byBarnstead|Thermolyne or on the date it is purchased by the original retail consumer,whichever date occurs first.

All warranty inspections and repairs must be performed by and parts obtained froman authorized Barnstead|Thermolyne dealer or Barnstead|Thermolyne (at its own dis -cretion) . Heating elements, however, because of their susceptibility to overheating and con-tamination, must be returned to our factory, and if, upon inspection, it is concluded that fail-ure is not due to excessive high temperature or contamination, warranty replacement will beprovided by Barnstead|Thermolyne . The name of the authorized Barnstead|Thermolynedealer nearest you may be obtained by calling 1-800-446-6060 or writing to:

Barnstead|ThermolyneP.O. Box 797

2555 Kerper BoulevardDubuque, IA 52004-0797

USAFAX: (319) 589-0516

E-Mail: mkt@barnsteadthermolyne.comBarnstead|Thermolyne’ s sole obligation with respect to its product shall be to repair

or replace the product. Under no circumstances shall it be liable for incidental or conse-quential damage.

THE WARRANTY STATED HEREIN IS THE SOLE WARRANTY APPLICABLE TOBarnstead|Thermolyne PRODUCTS. Barnstead|Thermolyne EXPRESSLY DISCLAIMSANY AND ALL OTHER WARRANTIES, EXPRESSED OR IMPLIED, INCLUDING WAR-RANTIES OF MERCHANTABILITY OR FITNESS FOR USE.

Barnstead Thermolyne2555 Kerper Blvd.P.O. Box 797Dubuque, IA 52004-0797 USAPHONE: 319-556-2241 • 800-553-0039FAX: 319-589-0516E-Mail: mkt@barnsteadthermolyne.com

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