Cuno SCALEGARD SGLP-RO User Manual
TABLE OF CONTENTS
SAFETY INSTRUCTIONS ......................................................................................................................................PAGE 1
FEEDWATER PARAMETERS ................................................................................................................................PAGE 1
PARTS LIST............................................................................................................................................................PAGE 1
MOUNTING ............................................................................................................................................................PAGE 1
PLUMBING CONNECTIONS ................................................................................................................................PAGE 2
SYSTEM START-UP ..............................................................................................................................................PAGE 3
CARTRIDGE CHANGE INSTRUCTIONS ..............................................................................................................PAGE 4
PRODUCT DIMENSIONS ......................................................................................................................................PAGE 5
TROUBLESHOOTING GUIDE ..............................................................................................................................PAGE 6
WARRANTY ..........................................................................................................................................................PAGE 7
PLANNED MAINTENANCE ..................................................................................................................................PAGE 8
MOUNTING TEMPLATE ................................................................................................................INSIDE BACK COVER
SCALEGARD™ LP REVERSE OSMOSIS FILTRATION SYSTEM
CUNO MODEL NUMBER SGLP-RO
CUNO INCORPORATED
400 RESEARCH PARKWAY
MERIDEN, CT 06450 U.S.A
PH: 1-888-218-2866
IN CONN. OR WORLDWIDE
203-237-5541
FAX: 203-238-8701
WARRANTY
A warranty card is shipped with every new CUNO®system that leaves the factory, and will be found in the same envelope as this
owner's manual. Please fill out the bottom portion and return it to CUNO Incorporated as soon as the system is installed. Keep the
top portion for your records.
CUNO offers a 2 year warranty on this system after purchase if any part of the CUNO system is found to be defective in materials or
workmanship by CUNO's Engineers, CUNO Incorporated will replace such part at no charge, F.O.B. Enfield factory. CUNO
Incorporated, however, shall not be liable for damages or delays caused by any defective material or workmanship, or by failure of any
parts due to normal wear and tear.
No equipment may be returned without a Returned Goods Authorization Number (RGA). Call CUNO Incorporated to obtain your RGA.
®
Installation Procedure
SAFETY
Always follow these safety precautions when
installing and operating the water filter system:
DO NOT use with water that is microbiologically
unsafe or of unknown quality without adequate
disinfection before or after the system.
DO NOT use a torch or other high temperature
sources near filter or cartridge.
DO NOT install on line pressures above 125 psi
(862 kPa).
DO NOT install on hot water line. Maximum
temperature allowed is 100°F (38°C).
DO NOT install in direct sunlight.
DO NOT reverse connections. The system must
be installed with the inlet and outlet as labeled.
DO NOT install filter system in locations where it
can be damaged by other freestanding equipment.
DRAIN filter system at temperatures below 40°F
(4.4°C). Protect from freezing.
INSTALLATION must comply with existing state
or local plumbing codes.
This piece of equipment is made in America and
has American sizes on hardware. All metric
conversions are approximate and vary in size.
FEEDWATER PARAMETERS
Be sure to confirm that the feedwater falls within
the limits shown below. If you’re not sure if this has
been done, check with your distributor before
installing the system. This is important because
failures caused by water related problems are not
covered under the system warranty.
Feed TDS . . . . . . . . .Up to 2,000 ppm (mg/L)
Hardness* . . . . . . . . . . .<10 grains (171 mg/L)
Iron (Fe) . . . . . . . . . . . . . . . . . . . . . .<0.1 mg/L
Hydrogen Sulfide . . . . . . . . . . .none allowable
Feed pH . . . . . . . . . . . . . . . . . . . . . . . . . .4-11
Free chlorine . . . . . . . . . . . . . . . . . . . .<2 mg/L
Manganese (Mn) . . . . . . . . . . . . . .<0.05 mg/L
Turbidity . . . . . . . . . . . . . . . . . . . . . . . .<5 NTU
* NOTE: For waters over 10 grain hard, a CUNO water
softener is recommended for pretreatment. Consult
CUNO technical services for correct sizing
.
PARTS LIST (SEE FIGURE 1, PAGE 2)
THE FOLLOWING PARTS ARE INCLUDED WITH
THE SCALEGARD REVERSE OSMOSIS WATER
FILTRATION SYSTEM. PLEASE UNPACK THE
CONTENTS FROM THE PRODUCT BOX AND
CHECK TO VERIFY THAT ALL OF THE PARTS
LISTED BELOW ARE INCLUDED. SHOULD ANY
PARTS BE MISSING, PLEASE CONTACT CUNO
AT 1-888-218-2866.
QTY DESCRIPTION
1 TANK & BRACKET ASSEMBLY
1 PREFILTER CARTRIDGE
1 REVERSE OSMOSIS MEMBRANE
CARTRIDGE
1 WATER SAMPLE VALVE ASSEMBLY
(SEE FIGURE 1)
1 1’ LENGTH OF 3/8” BLUE TUBING
1 10’ LENGTH OF RED TUBING
1 ADAPTER - STEM X BARB (1/4X1/4”)
1 ADAPTER - STEM X BARB (3/8 X 1/4”)
MOUNTING
1) Remove the mounting bracket template from
this manual. Tape it to the wall where the
mounting bracket is to be installed.
2) Install mounting screws (not included) into
each of the keyhole locations on the template.
Be sure to leave a 1/8" to 1/4" space between
the bottom of the screw head and the wall so
that the bracket can be hung.
NOTE: Mounting hardware must be
capable of supporting a minimum of 50 lbs
(22.7 kg).
3) Hang the Bracket/Tank Assembly from the
mounting screws.
4) Once the bracket is hung, tighten the
mounting screws so that the bracket is snug
between the screw and the wall.
Note: Make sure that the bracket is securely
mounted to a wall stud or other appropriate
wall structure.
1
2
Plumbing Connections
Note: The ScaleGard LP Reverse Osmosis
Water Filtration System requires a minimum
50 psi inlet water pressure. If inlet water
pressure is less than 50 psi, a water booster
pump may be required. Refer to Figure 1 for
proper tubing connections.
All connections are made with "Push-In"
connectors. Refer to Figure 2 on the use of "PushIn" plastic fittings. Use care in routing the tubing to
ensure that there are no bends or kinks.
1) Shut off water supply and water booster pump
(if applicable).
2) Insert the 1/4” x 1/4” Stem X Barb Adapter
(See Figure 1) into Inlet Water Valve. Run a
1/4” I.D. hose from the Water Supply or
Booster Pump to the Inlet Water Valve.
3) Insert one end of the 3/8" blue tubing (included)
into one end of the outlet tee on the RO system
and the other end to one side of the Water
Sample Valve Assembly. See Figure 1.
4) Insert the 3/8” x 1/4” Stem x Barb adapter into
the open 3/8” port of the sample valve
assembly. Run a 1/4” I.D. hose from the water
sample valve assembly to the inlet of the
Foodservice Equipment. See Figure 1.
5) Remove the white plug from the bottom port of
the RO Module.
6) Remove the red cap from the RO module and
moisten the o-rings with water. Insert the
cartridge into the filter head. Be sure the ears
on the cartridge line up with the spaces in the
head. Then turn the cartridge 1/4 turn to the
right.
7) Connect the 1/4” red tube from the “Brine In”
side of the permeate pump to bottom port of
the RO Module. (See Figure 3).
8) Run the separate 1/4” red tubing (included)
from the “Brine Out” port of the permeate
pump to the drain.
Side View Front View
Tank Shut-Off Valve
Inlet Water Valve
1/4” x 1/4”
Stem x Barb Adapter
Feedwater
from Incoming
Water Line or
Booster Pump
Prefilter Cartridge
P/N: 55706-10
Schrader Air Valve
Reverse Osmosis (RO)
Membrane
P/N: 55987-20
“Brine Out”
Por t
1/4” Red Tubing
(To Drain)
“Brine In”
Por t
Red
Tubing
(To Bottom
of RO
Membrane
Cartridge)
Outlet Tee
3/8”
Blue Tubing
Water Sample
Valve Assembly
Feedwater from Incoming
Water Line or
Booster Pump
3/8” x 1/4”
Stem x Barb Adapter
To E quipment
RO Membrane Plug
Step
2
Step
8
Step
3
Step
4
Step
5
Step
7
Figure 1
3
System Start-Up
1) Remove the prefilter cartridge from its
packaging. Remove the red cap from the
cartridge and moisten the o-rings with water.
Insert the cartridge into the filter head. Be sure
that the ears on the cartridge line up with the
spaces in the head. Then, turn the cartridge
1/4 turn to the right.
Note: Be sure to install the cartridge into the
proper head by matching the icon on the
cartridge label with the icon on the head.
2) Check that all plumbing connections are
secure.
3) Open the tank shut-off valve and inlet water
valve. Turn on the incoming water supply or
beverage booster pump (if applicable) and
check the system for leaks. If any leaks are
noted, turn off the water supply and/or booster
pump and correct the leak before proceeding.
If a leak is detected at a push-in fitting, refer to
Figure 2.
4) Divert the Water Sample Valve outlet to drain.
Open valve and let water run through the RO
to drain for 10 minutes.
5) Close sample valve.
6) Allow tank to fill (Approximately 60 minutes).
7) Open Water Sample Valve outlet to drain.
Empty tank. Water flowing from tank will
reduce to a fast drip when tank is empty.
8) Allow product water to run to drain for 60
minutes.
9) Close sample valve and allow the tank to fill
(Approximately 60 minutes).
How to Use ‘Push-In’ Connectors (Figure 2)
This product is outfitted with user friendly ‘Push In’ connectors. Proper use of the connectors
is shown in the diagrams. It is most important that the tubing selected for use with these
connectors be of high quality, exact size and roundness, and with no surface nicks or
scratches. If it is necessary to cut the tubing, use a plastic tubing cutter or sharp razor knife.
Make a clean square cut.
Should a leak occur at a ‘Push-In’ connector, the cause is usually defective tubing.
To Fix:
1. Relieve pressure 2. Release tubing 3. Cut off at least 1/4” from end
4. Reattach tubing 5. Confirm connection is leak free
To Attach Tubing To Release Tubing
1
Grey Collet
Push tubing straight in as far as it will go.
Tube
O-Ring
2
Tubing is secured in.
1
Push in collet to release tubing.
2
Pull tubing straight out.
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