SpectraPure MPDW User manual

4-Stage Drinking Water Systems
(MODEL: MPDW, DWS, DWS-PP)
INSTRUCTIONS
WARNING
Please read carefully before proceeding with installation. Failure to follow any attached
instructions or operating parameter may lead to the product’s failure and
possible damage to property.
SpectraPure®Inc.assumes no responsibility for water damage due to leaks. It is the
user’s responsibility to determine that the system is leak-free.

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TABLE OF CONTENTS
Operational Specifications
Contents of Drinking Water Systems ....................................................................................................................................... 3
Preparation
Drill Hole for Faucet in a Porcelain Sink ................................................................................................................................... 4
Punch Hole for Faucet in Stainless Steel Sink ......................................................................................................................... 4
Feed Supply Valve Installation................................................................................................................................................. 5
Procedure for Measuring Waste to Product Water Ratio ......................................................................................... 6
Flow Restrictor Removal, Adjustment, and Replacement................................................................................................... 7
Flow Ratio Chart .............................................................................................................................................................................. 8
Faucet Installation
Air-Gap Faucet Installation........................................................................................................................................................... 9
Non Air-Gap Faucet Installation ................................................................................................................................................ 10
Drain Saddle Installation............................................................................................................................................................ 11
Tank Installation
Installing Ball Valve on Tank ....................................................................................................................................................... 12
Tank Install........................................................................................................................................................................................ 12
In-line Carbon Block Filter Installation .............................................................................................................................. 12
Ice Maker Hook-up (optional) .................................................................................................................................................. 12
Mounting System
Mounting Installation.................................................................................................................................................................... 13
Start-up Procedures........................................................................................................................................................................ 13
Maintenance Procedures
Sanitizing the RO System (once a year)................................................................................................................................... 14
Recharging the Bladder Tank..................................................................................................................................................... 14
Troubleshooting Guide................................................................................................................................................................ 15-16
Warranty Information.................................................................................................................................................................. 17
Replacement Parts.......................................................................................................................................................................... 18
Copyright © 2006 by SpectraPure Inc.
ALL RIGHTS RESERVED
No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any
means, electronic, mechanical, photocopying, recording or otherwise without the prior written permission of
SpectraPure Inc.
Thank You for your purchase of a
SpectraPure® System. With proper installation and maintenance, this system will
provide you with high quality water for years to come. All SpectraPure® products are rigorously tested by us for
safety and reliability. If you have any questions or concerns, please contact our customer service department at
1.800.685.2783 or refer to our online troubleshooting at www.spectrapure.com.

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RO Feed water requirements
Operating Pressure: 40-80 psi (2.75-6.9 bar).
pH Range: 3-11.
Max. Temperature: 100°F (38°C).
Max. Feed Turbidity: 1.0 NTU.
Max. Silt Density Index: 5.0 (based on 15 min. test time).
Maximum Chlorine: < 0.1 ppm
Maximum TDS: 2000 ppm.
Maximum Hardness: 10 grains (170 ppm as CaCO3).
Maximum Iron: < 0.1 ppm.
Maximum Manganese: < 0.1 ppm
Maximum Hydrogen Sulfide: 0 ppm.
Langlier Saturation Index (LSI): must be negative.
NOTE: MOST MUNICIPAL WATER SUPPLIES MEET THE ABOVE REQUIREMENTS. IF WELL WATER IS USED, PLEASE
MAKE SURE THAT YOU OBTAIN A WATER TEST BEFORE INSTALLATION.
NOTE: THE OPERATING PRESSURE IN YOUR HOME SHOULD BE TESTED OVER A 24 HOUR PERIOD TO OBTAIN
THE MAXIMUM PRESSURE. IF IT IS ABOVE 80 psi THEN A PRESSURE REGULATOR WILL BE REQUIRED.
OPERATIONAL SPECIFICATIONS
MPDW KIT
(1) 4-Stage System
- (1) Membrane (25, 40, 60, 90)
- (1) 1 Micron Sediment Filter
- (1) 1 Micron Carbon Block
- (1) Inline 1/2 Carbon Block
- (1) Automatic Shut-off Valve (ASO)
- (1) Inline 1lb Check Valve
(1) Filter Wrench
(1) 3 or 4 Gallon Pressurized Storage Tank (Blue or White)
(1) Non-Air Gap Faucet with parts bag
(1) Drain Saddle
(1) Feed Water Adapter
CONTENTS OF DRINKING WATER SYSTEMS
DWS and DWS-PP KIT
(1) 4-Stage System
- (1) Membrane (25, 40, 60, 90)
- (1) 0.5 Micron Sediment Filter
- (1) 0.5 Micron Carbon Block
- (1) 5.0 Micron Carbon Block
- (1) Automatic Shut-off Valve (ASO)
- (1) Permeate Pump ASO (DWS-PP ONLY)
- (1) Inline 1lb Check Valve
- (1) Permeate Pump (only on DWS-PP System)
(1) 3 or 4 Gallon Pressurized Storage Tank (Blue or White)
(1) Air-Gap Faucet with parts bag (DWS & DWS-PP ONLY)
(1) Filter Wrench
(1) Drain Saddle
(1) Feed Water Adapter
IF ANY OF THE ITEMS LISTED ABOVE ARE MISSING PLEASE CONTACT SPECTRAPURE PRIOR TO INSTALLATION.
ALL RETURNS WITHOUT RMA# WILL BE REFUSED. CLAIMS MUST BE WITHIN 10 DAYS FROM RECEIPT.

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1. Prepare for installation by removing all items from under the sink. Locate and turn off the COLD water supply and
open the sink faucet to relieve any remaining pressure.
2. Determine an appropriate location for the Drinking Water System, Bladder Tank, Feed Water Connection, Drain
Saddle, and the Air-Gap or Non-Air Gap Faucet for your specific application.
3. TOOLS RECOMMENDED FOR INSTALLATION:
- 7/8” or 1/2” Hole Saw Bit for Faucet Opening (depends on
faucet used
- Round Knock out Punch for Stainless Sinks, 7/8” & 1/2”
- Adjustable Wrench
- Sharp Knife
- Open End Wrench
- Phillips Screw Driver
- Needle Nose Pliers- Adjustable Pliers
- Electric Drill
PREPARATION
NOTE: Porcelain sink material is extremely hard and can crack or chip quite easily. To avoid this, use extreme caution
when drilling. A carbide tipped masonary bit is recommended. SpectraPure® accepts no responsibility for
consequential damage resulting from the installation of the faucet.
A gurgling sound may be heard coming from the Air-Gap Faucet when the system is running.
This is normal and is in compliance with UPC Codes.
STEP 1. Determine a desired location for the faucet on your sink and place a piece of masking tape on the location
where the hole is to be drilled. Mark the center of the hole on the tape.
STEP 2. Use a variable speed drill on the slowest speed. Drill a 1/8” Pilot hole through both porcelain and metal casing
of sink at the center of the desired location. (If drill bit gets hot it may cause the porcelain to crack or chip)
STEP 3. Use a hole saw and proceed to drill the large hole (For AIR-GAP Faucet 7/8”. For NON AIR-GAP Faucet 1/2”).
Keep drill speed on the slowest speed and use lubricating oil or liquid soap to keep the hole saw cool
during cutting.
STEP 4. Make sure the surroundings of the sink are cooled before mounting the faucet to the sink after drilling. Remove
all sharp edges with a file.
DRILL HOLE FOR FAUCET IN A PORCELAIN SINK
STEP 1. If mounting faucet to a Stainless Steel Sink you will need a bimetal or carbide tipped hole saw.
STEP 2. The Faucet opening should be centered between the back splash and the edge of the sink, ideally on the
same side as the vertical drain pipe.
STEP 3. Drill a 1/4” pilot hole. Use a bimetal or carbide tipped hole saw to punch the hole in the sink.
(For AIR-GAP Faucet 7/8”. For NON AIR-GAP Faucet 1/2”).
PUNCH HOLE FOR FAUCET IN STAINLESS STEEL SINK

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STEP 1. Follow the cold water line from shut-off valve to the existing faucet and unscrew the threaded connection.
STEP 2. Insert feed supply valve between cold water line and existing connection.
STEP 3. Follow the assembly sequence shown for attaching valve to the existing cold water line.
STEP 4. Connect Black line from RO system as shown in Fig 1.
a. Remove the 1/2” Compression Nut from Valve body. Be carefull not to loose the plastic or brass Insert
and the Conical Compression Sleeve.
b. Insert the 1/4” Black Tubing into the Compression Nut with the threads towards the end of the tube.
c. Slip the Conical Compression Sleeve onto the Black Tube with the long slope pointing toward the
end of the tube.
d. Place the Insert into the end of the Black Tubing. Make sure you push the insert in all the way.
e. Tighten Compression Nut back on the Valve body.
STEP 5. When installation of the valve is complete, check for leaks as follows:
a. Close Feed Supply Valve that you just installed.
b. Open cold water supply valve and check for leaks around feed supply valve fittings. Tighten if necessary.
Note: To be certain of the cold line; turn on the hot water, allow water to run until pipe becomes warm. Then
attach fitting to the cold water line. If you run hot water through your system it will damage the membrane.
FIGURE 1: FEED SUPPLY INSTALLATION
FEED SUPPLY VALVE INSTALLATION
FEED VALVE
INSTALL ON COLD WATER LINE

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This procedure will assure you of maximum life and reliability of your SpectraPure System. Failure to perform this
procedure can permanently damage the membrane and will void the pro-rated Membrane Warranty.
In order to maximize the life of your SpectraPure RO Membrane, you may need to adjust the ratio of the concentrate to
purified water. If not enough concentrate is allowed to flow past the membrane during operation, the impurities will
precipitate out on the membrane surface, clogging the RO Membrane. To keep this from happening, the Concentrate to
Purified Water Ratio must be checked and adjusted in order to compensate for pressure and temperature variations that
exist in all water supplies. The flow rate of the concentrate must be a minimum of 4X the product flow rate. 4X to 6X is an
acceptable concentrate flow rate.
Procedure:
1. Locate the Yellow waste line. Direct the waste line into a sink drain or bucket.
2. Locate the Blue product line. Direct the product line into a sink drain or bucket.
NOTE: For the DWS-PP, locate the yellow and blue line (shown in the Diagram below) and disconnect them
from pump to proceed with Measuring Waste to Product Water Ratio.
3. Turn on the Feed Supply Valve and let the system run for 20 min.
4. Collect product water from the blue line into a measuring cup for one minute. Measure the collected amount
in milli-liters. Do the same with the waste water.
WASTE IN MILLILITERS______________
DIVIDED BY
PRODUCT IN MILLILITERS______________
The resultant is the Concentrate to Product Ratio
(Although not needed in this procedure, the daily product flow rate in Gallons per Day (GPD) can be calculated to be
equal to the product flow rate times 0.38 ).
5. If ratio is less than 4:1
6. Follow instructions on page 7
(MAKE SURE YOU RECONNECT WATER LINES FOR DWS-PP)
7. If ratio is greater than 6:1, flow restrictor requires replacement (Please contact SpectraPure Inc).
PROCEDURE FOR MEASURING WASTE TO PRODUCT WATER RATIO

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1. Locate the yellow concentrate tubing. Remove the tubing from its push-fitting at the membrane as follows:
a.) Firmly depress and hold the push-fitting collar down with your thumbnail.
b.) While the push-fitting collar is depressed, pull the tubing straight out of the push-fitting. Once the tubing
is removed, release the collar.
2. Carefully remove the flow restrictor assembly, now visible as a plastic insert In the end of the yellow tubing.
You may use an object such as a dull knife to help pry the flow restrictor insert from the end of the tubing. The entire
flow restrictor (consisting of the insert collar and thin capillary tubing) may then be gently extracted.
Note: Take care not to crush or otherwise damage the delicate capillary tubing.
3. Refer to the Flow Restrictor Tables (page 8). Find the table that represents the Flow Restrictor Assembly for the system
that you have. Find the product flow rate in the left-hand column and the length of the flow restrictor in the
right-hand column.
Example: If your Flow Restrictor Assembly is for a 90 GPD Membrane and the product flow rate is 170 mL/Min, then
the flow restrictor length should be cut to 6.5 inches (16.5 mm). 170 is about halfway between 164 (7 in.) and
175 (6 in.).
4. Using a new single-edge razor blade, carefully measure and then cut the flow restrictor to the total length indicated.
5. Re-insert the flow restrictor assembly into the yellow tubing and firmly re-seat the insert into the end of the yellow
tubing by carefully pressing on the insert with your thumbnail. Care should be taken not to crush or other-wise
damage the end of the capillary tubing protruding from the end of the insert.
6. Re-insert the yellow tubing into its push-fitting in the RO membrane as follows:
a.) Moisten the O-ring seal inside the concentrate outlet fitting by dripping a few drops of clean water into the fitting.
b.) Grasp the yellow tubing near the flow restrictor end, and insert the tubing into the push-fitting. Push the tubing
into the fitting until resistance is felt, approximately 1/2 inch (12.7 mm). The tubing is now resting on the O-ring
seal inside the fitting.
c.) Firmly push the tubing approximately an additional 1/4 inch (6.35 mm) further into the fitting to completely seat
the line into the fitting and O-ring seal.
7. Turn on the system water supply and check for leaks prior to further use or testing. If a leak is observed, you may not
have pushed the yellow tubing into the push-fitting far enough to seal the tubing against the O-ring. Turn off the
system water supply and re-seat the tubing as described above.
YELLOW TUBING
Flow Restrictor Assembly
FLOW RESTRICTOR REMOVAL, ADJUSTMENT AND REPLACEMENT
FLOW RESTRICTOR

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FR
-
25 & FR
-
40
ml./min. gpd in. cm.
110 42 1 2.5
84 32 2 5.1
75 29 3 7.6
69 26 4 10.2
63 24 5 12.7
60 23 6 15.2
55 21 7 17.8
51 19 8 20.3
47 18 9 22.9
45 17 10 25.4
44 17 11 27.9
42 16 12 30.5
40 15 13 33.0
39 15 14 35.6
38 14 15 38.1
37 14 16 40.6
PRODUCT RATE CUT TO LENGTH
FR
-
90
ml./min. gpd in. cm.
269 102 1 2.5
233 88 2 5.1
213 81 3 7.6
198 75 4 10.2
183 69 5 12.7
175 67 6 15.2
164 62 7 17.8
154 58 8 20.3
148 56 9 22.9
141 54 10 25.4
136 52 11 27.9
133 50 12 30.5
129 49 13 33.0
128 48 14 35.6
124 47 15 38.1
124 47 16 40.6
PRODUCT RATE CUT TO LENGTH
FR
-
60
ml./min. gpd in. cm.
158 60 1 2.5
130 49 2 5.1
123 47 3 7.6
110 42 4 10.2
99 38 5 12.7
94 36 6 15.2
93 35 7 17.8
88 33 8 20.3
84 32 9 22.9
79 30 10 25.4
76 29 11 27.9
74 28 12 30.5
71 27 13 33.0
68 26 14 35.6
66 25 15 38.1
66 25 16 40.6
PRODUCT RATE CUT TO LENGTH
FR-180
ml./min. gpd in. cm.
490 186 1 2.5
460 175 2 5.1
430 163 3 7.6
400 152 4 10.2
379 144 5 12.7
356 135 6 15.2
344 131 7 17.8
326 124 8 20.3
311 118 9 22.9
300 114 10 25.4
289 110 11 27.9
281 107 12 30.5
270 103 13 33.0
263 100 14 35.6
259 98 15 38.1
256 97 16 40.6
PRODUCT RATE CUT TO LENGTH
(RED) (ORANGE)
(YELLOW or
WHITE) (GREEN)
CHECKING CONCENTRATE TO PURIFIED WATER RATIO

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FAUCET INSTALLATION
Figure 3
AIR-GAP FAUCET PARTS LIST
- Faucet
- Galvanized Flange
- Rubber Washer
- Flat Metal Washer with “U” Cutout
- Plastic Spacer with Cutout
- Flat Metal Washer
- Hex Nut
- 1/4” Quick Connect Plastic Tubing Adapter
AIR-GAP FAUCET INSTALLATION
A. Place the chrome counter plate and rubber washer over the threaded shaft and barbed
nipples on the faucet (Refer to Figure 3).
B. Pass the Blue 3/8” tubing, the Yellow 1/4” tubing, and the Black 3/8” tubing up through the drilled
counter-top hole and temporarily secure them so they don’t fall back through the hole.
C. Place the galvanized flange, plastic spacer, flat metal washer, and hex nut in sequence over the threaded
shaft and temporarily hand-tighten, then screw the push fitting onto the end of the threaded shaft.
D. Insert the Blue 3/8” tubing into the Quick Connect Tubing Adapter.
E. Connect the 1/4” yellow tubing to the smaller barb and connect the 3/8” Black tubing to the larger barb.
F. Drop the entire assembly into the hole, resting on the chrome counter plate. Loosen the nut and position the
Galvanized Flange under the countertop and then securely tighten the hex nut.
G. DO NOT CUT EXCESS TUBING AT THIS POINT. YOU WILL NEED THE TUBING TO INSTALL TANK.
TIP: When connecting the tubes to the hose barbs, try using HOT water to soften the plastic tubes. When connecting the
drain lines to the saddle, make the lengths as short and straight as possible to reduce drainage noise.
Figure 4: INSTALLATION FOR DWS & DWS-PP SYSTEM

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Figure 5
NON AIR-GAP FAUCET PARTS LIST
- Faucet
- Chrome Counter Plate
- Locating Washer
- Large Rubber Washer
- Small Rubber Washer
- Flat Metal Washer
- Hex Nut
- Plastic Conical Compression Sleeve
- Insert
- Compression Nut
Figure 6: INSTALLATION FOR MAXPURE (MPDW)
NON AIR-GAP FAUCET INSTALLATION
A. Place the chrome counter plate and large rubber washer over the threaded shaft on the faucet and
place in hole previously drilled on page 4.
B. Place the small rubber washer, locating washer, flat metal washer, and hex nut in sequence over the threaded
shaft and temporarily hand-tighten. (Fig. 5)
C. Insert the Blue Tube into the Compression Nut with the threads towards the end of the tube. Then add the
Compression Sleeve.
D. Place the Insert into the end of the Blue Tubing. Make sure you push the insert in all the way. Screw the
Compression Nut onto the threaded shaft.
E. Securely tighten both hex nut and Compression Nut.
F. DO NOT CUT EXCESS TUBING AT THIS POINT. YOU WILL NEED THE TUBING TO INSTALL TANK.
TIP: When connecting the tubes to the hose barbs, try using HOT water to soften the plastic tubes. When connecting the
drain lines to the saddle, make the lengths as short and straight as possible to reduce drainage noise.