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14

•Add one capful of bleach to the Activated 

Carbon Post Filter Housing. Carefully fill 

the Housing with tap water and temporarily 

install the Housing without the Activated 

Carbon Post Filter. 

•The Dispensing Faucet should be open, 

slowly open the Feed Water Saddle Valve. 

•As soon as water begins to drip out of the 

Dispensing Faucet, close the Faucet.

•Let the system stand for 15 minutes. 
•At the end of 15 minutes, in the following 

order, close the Feed Water Saddle Valve, 

close the Holding Tank Valve and open the 

Dispensing Faucet to release the pressure. 

•Remove the Sediment/Carbon Prefilter 

Housing and empty. Remove the wrapping 

and install the Sediment/Carbon Prefilter. 

Firmly tighten the Housing hand tight only.

•Remove the Activated Carbon Post Filter 

Housing and empty. Remove the wrapping 

and install the Activated Carbon Post Filter. 

Firmly tighten the Housing hand tight only.

•Disconnect the yellow product water tubing 

that runs from the Holding Tank to the Tee 

(see Fig. 1, page 5). Put 50 drops of bleach 

(this is ½ tsp. or 3 ml) into the tubing and 

reconnect it to the Tee. 

 

NOTE:

 Now is the convenient time to 

change the In–Line Activated Carbon Post 

Filter, see Sec. V, C.1–6. 

•Slowly open the Feed Water Saddle Valve. 

When water begins dripping out of the 

Dispensing Faucet, in the following order, 

close the Faucet and then open the Holding 

Tank Valve. 

•Do not open the Faucet for at least 8 hours. 
•Discard the first three full tanks of water 

produced, they will contain chlorine. 

IN–LINE ACTIVATED CARBON  

POST FILTER ASSEMBLY

OUT

IN

In-Lin

e

 Activ

ated

C

arbon Post Filt

er

3

/8" Blue

T

o

Dispensing

F

a

uce

t

3

/8" Blue

Figure 5

C.  Changing the In–Line Activated Carbon Post 

Filter 

1.  Close the Feed Water Saddle Valve by 

turning fully clockwise. 

2.  Close the Holding Tank Valve and then 

open the Dispensing Faucet to release the 

pressure. 

3.  Remove the In–Line Activated Carbon Post 

Filter. Disconnect the used Post Filter by 

pressing in the connector’s collar and at the 

same time pulling the tube out of the fitting. 

4.  Firmly reconnect the polytubes to the new 

Post Filter. (Refer to Fig. 5) 

5.  Slowly open the Feed Water Saddle Valve. 
6.  When water begins dripping out of the 

Faucet, in the following order, close the 

Faucet and open the Holding Tank Valve. 

When the Faucet is first opened, expect air 

and carbon fines (very fine black powder), 

from the new Post Filter to be rinsed out. This 

is normal for the first tank of water.

Summary of Contents for MRO-35

Page 1: ... by NSF International against NSF ANSI Standard 58 for the reduction of the claims specified on the Performance Data Sheet Millennium Reverse Osmosis Drinking Water System Model MRO 35 INSTALLATION OPERATION SERVICE MANUAL ...

Page 2: ...ertains to people with HIV AIDS patients receiving treatment for cancer recipients of organ or bone marrow transplants transplant patients taking immunosuppressive drugs and persons who have congenital immunodeficiencies The EPA has stated that they do not know the significance of drinking water compared to other possible sources of Cryptosporidium to determine how most people become infected The ...

Page 3: ...er supply to prevent excess reject water from going to drain when the unit is not producing water WATER QUALITY MONITOR The optional Water Quality Monitor has been integrated into the faucet base for instant monitoring at the touch of a button The monitor compares the level of the Total Dissolved Solids in the incoming feed water versus the product water and calculates the percent rejection The mo...

Page 4: ...that is available to the user as reverse osmosis treated water when the system is operated without a storage tank or when the storage tank is bypassed Efficiency rating means the percentage of the influent water to the system that is available to the user as reverse osmosis treated water under operating conditions that approximate typical daily usage This reverse osmosis system contains a replacea...

Page 5: ...e screws and nuts for mounting the manifold or concrete anchors for hanging on basement wall Additional tubing or tube connectors Plastic wire ties for organizing tubing TYPICAL mro 35 UNDER SINK INSTALLATION DIAGRAM Figure 1 The Water Quality Monitor may be necessary to conform to state or local codes check with the local plumbing authority Dispensing Faucet with Air gap drain clamp drain 3 8 Bla...

Page 6: ... POST filter housing Reverse osmosis membrane housing sediment CARBON prefilter housing BASEMENT FLOOR please note if air gap in faucet is not used in basement installations a proper air gap must be created please check with local plumbing codes see example above FLOOR FEED water saddle valve cold water line only INLET 1 4 Red DRAIN 1 4 Black 1 air gap required POLYTUBE TEE IN LINE ACTIVATED CARBO...

Page 7: ...ing of water pitchers and glasses and an open area beneath the faucet under the sink for attaching product and drain tubing are considerations A 2 diameter flat surface is required above and below the installation site The thickness of the mounting surface should not exceed 1 Watch for strengthening webbing on the underside of cast iron sinks 2 Drinking Water Holding Tank The Holding Tank may be p...

Page 8: ...ps Install the punch and tighten the nut to cut the hole Deburr any sharp edges 2b Drilling a porcelain sink It is best to use a special 1 diameter cutter designed for porcelain A carbide tipped masonry bit is a second choice Place a piece of tape over the area to be drilled to help prevent chipping Drill a pilot hole for the porcelain cutter Use the pilot drill supplied with the kit or a carbide ...

Page 9: ...CK 3 8 POLYTUBE TO DRAIN CLAMP BLACK 1 4 POLYTUBE TO DRAIN PORT ON RO SYSTEM BLUE 3 8 POLYTUBE PRODUCT OUTLET 6 Connect the tubing to the Faucet Push the Blue 3 8 Polytube into the 3 8 Quick Connect Fitting Push the Black 3 8 Polytube onto the large Hose Barb Push the Black Polytube onto the small Hose Barb 7 Determine which direction the handle should face right or left With the handle facing the...

Page 10: ... When you feel the Valve Handle firmly seated in the clockwise direction the copper tube is pierced and the valve is closed 2b To install on hard steel or brass tubing supply line The supply line should now be drained Use a battery powered or properly grounded drill to avoid shock hazard Drill a 3 16 hole in the supply line do not drill through the opposite wall Turn the handle to expose the lance...

Page 11: ...ld and insert the tubing Reference the special supplement sheet in the carton for proper connection of all tubing and removal of plugs Run the tubing along its course to the Feed Water Saddle Valve trim to length Refer to Fig 1 Refer to Fig 3 To the end of the red polytube install the Compression Nut the Plastic Ferrule and the Insert Connect to the Feed Water Saddle Valve 3 Locate the Black Drain...

Page 12: ...ly tighten the Housing hand tight only Remove the plugs labelled MEMBRANE and ACTIVATED CARBON from the underside of the manifold To each of the remaining white Housings add one capful of bleach Insert a Housing O ring engage and firmly tighten the Housings hand tight only Slowly open the Feed Water Saddle Valve turning counter clockwise As soon as the water begins to come out of the Dispensing Fa...

Page 13: ...n used daily After periods of non use such as a week of vacation it is better to empty the Holding Tank and allow the system to produce fresh water for use If the system is not used for 3 4 weeks or longer it is a good idea to resanitize the system and to change the prefilter and post filters B Changing Filters THIS R O SYSTEM CONTAINS FILTERS WHICH MUST BE REPLACED AT REGULAR INTERVALS TO MAINTAI...

Page 14: ...t time to change the In Line Activated Carbon Post Filter see Sec V C 1 6 Slowly open the Feed Water Saddle Valve When water begins dripping out of the Dispensing Faucet in the following order close the Faucet and then open the Holding Tank Valve Do not open the Faucet for at least 8 hours Discard the first three full tanks of water produced they will contain chlorine IN LINE ACTIVATED CARBON POST...

Page 15: ...15 NOTES ...

Page 16: ...ee check The ASO Valve is malfunctioning Replace ASO Valve components Low pressure at the Dispensing Faucet In Line Activated Carbon Post Filter is plugged Replace Post Filter Air precharge in the Holding Tank is too low Empty water from Holding Tank and with the faucet open adjust the air pressure to 5 7 psig 35 48 kPa range Check for leakage at the Air Valve Stem Holding Tank Valve is partially ...

Page 17: ...umbing Dissolved gasses in the Feed Water Pretreat Feed Water to remove dissolved gasses Increase in Product Water TDS See high TDS in the Product Water section Drain Water overflows at the Dispensing Faucet Air Gap is blocked Clear Air Gap Rinse with vinegar for removal of calcium buildup Drain tubing is clogged Clear tubing Drain Clamp hole is misaligned Align with hole in the drain pipe Excessi...

Page 18: ...18 MADE IN USA Exploded View Parts List 19 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 18 16 17 21 Nitrate Nitrite Test Kit 22 Water Quality Test Kit for systems without the Water Quality Monitor ...

Page 19: ...3010 Housing 15 R7078 Optional Water Quality Monitor w Probes and Cover 16 S2116 5 Drain Restrictor 50 GPD 189 lpd Green 17 S7125 Activated Carbon Post Filter 18 S1405 1 4 3 8 Fitting Wrench 19 S3072 Wrench for Housing 20 S7206W JG In Line Activated Carbon Post Filter shown on pg 6 R2118 Water Quality Monitor 25 Ft Extension Cable 21 S1447 Nitrate Nitrite Test Kit 22 S1580 Water Quality Test Kit O...

Page 20: ...so pay for shipping or travel charges to return the defective part s What Does This Warranty Not Cover This warranty does not cover the disposable sediment and carbon filters whose service life depends on feed water conditions In addition the membrane is only warranted if the required feed water conditions are met The above warranty will also not apply to any part of the Millennium R O Drinking Wa...

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