Watts Hydro-Safe Cube Max-S2, Hydro-Safe Cube Max-S2L, Hydro-Safe Cube Max-CP1, Hydro-Safe Cube Max-S3, Hydro-Safe Cube Max-CP1L Installation, Operation And Maintenance Manual

IOM-HS-Cube Max

Installation, Operation and Maintenance Manual

Models:
Cube Max-CP1, Cube Max-S2, Cube Max-S3, Cube Max-CP1L,
Cube Max-S2L, Cube Max-S3L, Cube Max-S3L+, Cube Max-CP1BBL
Cube Max-S2BBL, Cube Max-S3BBL

Important

Please read the entire manual before proceeding with the
installation and startup. Your failure to follow any attached
instructions or operating parameters may lead to the product’s
failure.

Save manual for future reference

Tested and certified by WQA against NSF/ANSI
Standard 42 for the reduction of claims specified on
the performance data sheet & NSF/ANSI 372 for "lead
free" compliance.

Cube Max-S3

Table of Contents

System Specifications .................................2

Replacement Filters ...................................2

Notice to Installers ....................................3

Installation Precautions ................................3

Operation ..........................................3

Installation ..........................................3

Maintenance ........................................4

Filter Cartridge Replacement Procedure ...................4

Replacement Parts List ................................4

System Drawings ....................................4

Limited Warranty .....................................6

Note: Do not use with water that is microbiologically unsafe or

of unknown quality without adequate disinfection before or after
the system.

System Specifications

Maximum Pressure:
Slimline Systems - 125 psi (8.6 bar)

Cube Max Models CP1, CP1L, S2, S2L, S3, S3L
Big Blue Systems - 90 psi (6.2 bar)

Cube Max Models CP1BBL, S2BBL, S3BBL, and S3L+
Maximum Temperature: 100°F (38°C)
pH 6.5 to 8.5
Hardness (maximum for systems containing OneFlow) 75 grains

(1282 ppm CaCO3)
Chlorine < 2ppm
Iron (maximum) 0.3 mg/l
Manganese (maximum) 0.05 mg/l
Copper (for systems containing OneFlow) < 0.1 mg/l
Oil & H2S- None allowed
Polyphosphate (for systems containing OneFlow)- None allowed
Silica (maximum for systems containing OneFlow) 10 ppm
For all other feed water quality requirements abide by the current

USEPA Safe Drinking Water Act standards.
Inlet/Outlet Connections:

¾" (20mm) NPT for Big Blue Models.
Maximum Flow Rate:

System Model Flow Rate

Cube Max-CP1 1 GPM

Cube Max-S2 1 GPM

Cube Max-S3 1 GPM

Cube Max-CP1L 2 GPM

Cube Max-S2L 2 GPM

Cube Max-S3L 2 GPM

Cube Max-S3L+ 2 GPM

Cube Max-CP1BBL 4 GPM

Cube Max-S2BBL 4 GPM

Cube Max-S3BBL 4 GPM

Cube Max line is available in different configurations depending upon
filtration and flow requirements.

Slimline models use 2¾" (70mm) diameter filters and are available
in either 10" (250mm) or 20" (500mm) length options. The slimline
systems are equipped with 3/8 NPT fittings.

Big Blue systems use 4
in either 10 inch or 20 inch length options. The Big Blue models are
equipped with ¾" (20mm) NPT fittings.

3

⁄8" (10mm) NPT for Slimline Models,

System Flow Rate

1

⁄2" inches in diameter filters and are available

Replacement Filters

System Replacement Filters

System Model Filter Ordering Code Frequency Description

Cube Max-CP1 CBMXR-S-CBSC 6 Months 10" Carbon and Scale Filter

CBMX-S2S-PM All Filters for System Maintenance

Cube Max-S2

Cube Max-S3

Cube Max-CP1L CBMXR-L-CBSC 6 Months 20" Carbon and Scale Filter

Cube Max-S2L

Cube Max-S3L

Cube Max-S3L+

Cube Max-CP1BBL CBMXR-BL-CBSC 6 Months 20" Carbon and Scale Filter

Cube Max-S2BBL

Cube Max-S3BBL

Filter Cartridge Life Span

Filter cartridges should be changed at end of filter life, due to lack of
filtering performance, or whenever a 15 psi pressure drop or greater is
experienced during normal operation, whichever comes first.

Filter Placement Reference

The replacement filter cartridges are to be installed from left to right, in
any given system, as they appear in the above chart from top to bot­tom respectively.

Example: Cube Max-S3 will have a HSR-S-SED-5M in the left hous­ing, a CBMXR-S-CB in the middle housing and a DOR-OF110RM in
the right housing.

Please note: Cartridge capacities are estimates and may be less
depending on incoming water quality.

CBMXR-S-CB 6 Months 10" Carbon Block

DOR-OF110RM 12 Months 10" OneFlow Anti-Scale Cartridge

STMAXR-S-ACSC 6 Months 10" Phosphate Scale Control (Option)

CBMX-S3S-PM All Filters for System Maintenance

HSR-S-SED-5M 6 Months 10" Sediment Pre Filter

CBMXR-S-CB 6 Months 10" Carbon Block

DOR-OF110RM 12 Months 10" OneFlow Anti-Scale Cartridge

STMAXR-S-ACSC 6 Months 10" Phosphate Scale Control(Option)

CBMX-S2L-PM All Filters for System Maintenance

CBMXR-L-CB 6 Months 20" Carbon Block

DOR-OF120RM 12 Months 20" OneFlow Anti-Scale Cartridge

STMAXR-L-ACSC 6 Months 20" Phosphate Scale Control (Option)

CBMX-S3L-PM All Filters for System Maintenance

HSR-L-SED-5M 6 Months 20" Sediment Pre Filter

CBMXR-L-CB 6 Months 20" Carbon Block

DOR-OF120RM 12 Months 20" OneFlow Anti-Scale Cartridge

STMAXR-L-ACSC 6 Months 20" Phosphate Scale Control (Option)

CBMX-S3LP-PM All Filters for System Maintenance

HSR-S-SED-5M 6 Months 10" Sediment Pre Filter

CBMXR-L-CB 6 Months 20" Carbon Block (2)

OFTWHRM 12 Months 20" OneFlow Anti-Scale Cartridge

STMAXR-BL-ACSC 6 Months 20" Phosphate Scale Control (Option)

CBMX-S2B-PM All Filters for System Maintenance

CBMXR-BL-CB 6 Months 20" Carbon Block

DOR-OF140RM 12 Months 20" OneFlow Anti-Scale Cartridge

STMAXR-BL-ACSC 6 Months 20" Phosphate Scale Control (Option)

CBMX-S3B-PM All Filters for System Maintenance

HSR-BL-SED-5M 6 Months 20" Sediment Pre Filter

CBMXR-BL-CB 6 Months 20" Carbon Block

DOR-OF140RM 12 Months 20" OneFlow Anti-Scale Cartridge

STMAXR-BL-ACSC 6 Months 20" Phosphate Scale Control (Option)

2

Notice to Installer

• Do not discard this manual after installation. This manual contains

important operation, maintenance and precautionary information.
Please present this manual to the user/owner/operator after
installation.

• It is strongly suggested that you read this manual before installing

system to ensure the best possible installation.

• Installation must comply with all local and state plumbing codes

and regulations.

• Connect the system to cold water supply only. Water Temperature

cannot exceed 100°F (38°C).

• System must be installed in a vertical, upright and level position.

• Do not use with water that is microbiologically unsafe or of

unknown water quality.

• Notice to user/owner/operator: Please retain this manual for future

reference for parts, maintenance, or troubleshooting.

• It is recommended that all personnel responsible for operation and

maintenance of this product read the precautions, maintenance,
and operation sections of this manual.

Installation Precautions

• Do not install system on line pressure above the rated pressure as

noted in System Specifications above.

• Do not install the system on a hot water line. Failure to limit the

water temperature to 100°F (38°C) can result in housing failure and
property damage.

• Do not connect the system backwards with the feed water line

connected to the outlet.

• Do not use liquid pipe thread compounds for threaded
connections. Use Teflon

• Do not solder plumbing connections that are attached to the
housings or inlet/outlet fittings. System damage may occur due to
high temperature.

• Do not allow the system to freeze. Turn off water supply and drain

the system if temperature falls below 32°F (0°C).

• Do not install system in direct sunlight or where the system will be

exposed to harsh chemicals or may be subjected to being hit by
moving equipment, carts, mops, or any other item that may cause
damage.

• Allow 3" (76mm) minimum clearance under the housings for lter

replacement.

• If water hammer is evident, install water hammer arrestors before

the system.

• Do not over tighten tting connections.

• Always back up valves and ttings with a wrench when installing

fittings to avoid over tightening or loosening existing fittings.

• Do not install the unit behind equipment where it may be difcult to

access the system for future filter replacements.

Position the system in a suitable location. The direction of flow
through the system is left to right. Keep this in mind when determin­ing installation locations. Do not mount the system near any source
of heat. Also do not mount this system over anything that may be
adversely affected by water.

®

tape only.

OneFlow Application Practices

Note: Systems using OneFlow technology prevent hardness related
scale formation inside the plumbing system at influent hardness
levels of 75 grains per gallon of calcium carbonate and less. Due to
variances in water chemistry certain aesthetic conditions external of
the plumbing system may not be attained. New copper lines need

to be passivized before placing unit into service. Copper usually

originates from new copper plumbing upstream of the OneFlow
system. All new copper plumbing before the system should be al­lowed to passivate by operating under normal conditions for a period
of 4 weeks prior to starting the system up. This will allow the copper
surfaces to be fully flushed and develop a natural protective surface.

To further minimize any problem with excess copper, avoid applying

excess flux on the inner surfaces of the pipe and use a low-corrosivi­ty water soluble flux listed under the ASTM B813 standard. OneFlow
is not for use on closed loop systems.

Operation

With sufficient pressure, operation of this system is completely auto­matic. Dependable operation involves only monitoring system pres­sure differential, periodic filter changes, and service documentation.

Installation

* Please note: All cartridge filters are preinstalled, in the

housings, at the factory.

1. Turn off all equipment to be fed by the system, locate the water
supply shutoff valve and turn it off.

2. Apply Teflon tape to the threads of the inlet and outlet valve and
pressure gauge assemblies. Thread the inlet and outlet valve
and pressure gauge assemblies into the inlet and outlet of the
system. The valve and pressure gauge assembly with the ¼"
(8mm) Quick-Connect flush valve fitting is to be installed on the
outlet of the system. See the drawings on pages 4 and 5 of this
manual for proper valve and pressure gauge assembly place­ment. NOTE: DO NOT OVER TIGHTEN THESE FITTINGS

INTO THE FILTER HEADS.

3. Anchor the system on a wall stud or suitable mounting material

spanning wall studs. System must be vertical, upright and level.

4. Run a suitable line from the tap water source to the inlet ball
valve on the left side of the system. Slimline models require 3/8"
(10mm) NPT fittings, Big Blue models require ¾" (20mm) NPT
fittings. Brace the inlet ball valve on the system with a wrench
when connecting the feed water line. NOTE: DO NOT
OVERTIGHTEN CONNECTION FITTING INTO BALL VALVE.

5. Select the appropriate size tubing for the equipment being fed,

and connect it to the outlet ball valve of the system.

NOTE: DO NOT OVERTIGHTEN CONNECTION FITTING
INTO BALL VALVE.

6. Install the ¼" (8mm) tubing into the Quick-Connect fitting on the
outlet of the system and hold it over a drain. Open the
drain valve.

7. Once all inlet and outlet piping has been completed, check and
make sure all filter housing are tight, slowly open the inlet valve
and allow all air to purge from the system. Slowly close the
(8mm) drain valve, allow the system to reach operating pressure,
and check for leaks.

1

8. If no leaks are present, open the
allow it to run to drain for 5 minutes to flush the system then
close the valve.

9. Open the outlet water valve and check for leaks.

10. Record the start up date and pressure gauge values in system
maintenance log.

Note: Overtightening components can damage the system
causing water damage and/or system failure.

Teflon® is a registered trademark of E.I. DuPont de Nemours & Company.

3

⁄4" (8mm) drain line again and

1

⁄4" (8mm)

1

⁄4"

Maintenance

Routine maintenance of this system involves periodic filter changes.

Filter cartridges should be changed at end of filter life, due to lack of
filtering performance, or whenever a 15 psi pressure drop or greater
is experienced during normal operation, whichever comes first.

Filter Cartridge Replacement Procedure

IMPORTANT: Determine whether all equipment connected to
the system must be turned off prior to shutting off water supply
from filters.

1. If required, turn off downstream equipment.

2. Turn OFF water to the system by closing the inlet and outlet ball
valves.

3. Open the ¼" drain valve on the outlet of the system to relieve
pressure in the housings.

4. Remove housings by unscrewing them. They have a standard
right hand thread.

5. Clean inside of housing sump with warm water. If desired, disin­fect housing using a teaspoon of household bleach. Add to filter
bowl and fill with water. Let stand 5 minutes and then discard
and rinse.

6. Insert new cartridges into filter housings.

7. Make certain the O-ring is properly positioned and reinstall filter
housings. Tighten housings hand tight. Check O-ring for dam­age and replace if damaged or distorted.

Do not overtighten filter housing, overtightening may damage
O-ring(s), cause water leaks, or affect system performance.

8. Slightly open the inlet ball valve and fully open the ¼" drain
valve. Once full flow of water flows from the drain port, slowly
open the inlet valve to the full open position. Allow water to flush
to drain for 5 minutes.

9. Slowly close the drain valve and check the system for leaks.

10. Slowly open the outlet valve to restore water flow to downstream
equipment.

11. Record filter change date in system maintenance log.

Cube Max-CP1

Cube Max-S2

Replacement Parts

Description Ordering Code

Ball Valve 3/8 NPT HSR-BV3/8

Ball Valve 3/4 NPT HSR-BV3/4

Pressure Gauge HSR-GAUGE

10" Slimline Housing HSR-10HS

20" Slimline Housing HSR-20HS

10" Big Blue housing HSR-10BHS

20" Big Blue Housing HSR-20BHS

Slimline O-Ring HSR-RING-S

Big Blue O-Ring HSR-RING-B

Cube Max-S3

4

Cube Max-CP1L

Cube Max-S3L+

Cube Max-S2L

Cube Max-S3L

Cube Max-CP1BBL

Cube Max-S2BBL

5

Cube Max-S3BBL

6

Notes

7

Note: Allow 3" (76mm) of clearance at bottom of system for removal of filterbowls
for filter cartridge replacement

LIMITED WARRANTY: Watts Regulator Co. (the “Company”) warrants each Cube Max water filtration line system, excluding filters and water treatment cartridges, to be free from defects in material and
workmanship under normal usage for a period of five years from the date of original shipment. The Company warrants all filters and water treatment cartridges to be free from defects in material and
workmanship under normal usage for a period of one year from the date of original shipment. In the event of such defects within the warranty period, the Company will, at its option, replace or recondition
the product without charge.
THE WARRANTY SET FORTH HEREIN IS GIVEN EXPRESSLY AND IS THE ONLY WARRANTY GIVEN BY THE COMPANY WITH RESPECT TO THE PRODUCT. THE COMPANY MAKES NO OTHER WARRANTIES, EXPRESS OR IMPLIED.
THE COMPANY HEREBY SPECIFICALLY DISCLAIMS ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
The remedy described in the first paragraph of this Limited Warranty shall constitute the sole and exclusive remedy for breach of warranty, and the Company shall not be responsible for any incidental, special or consequential
damages, including without limitation, lost profits or the cost of repairing or replacing other property which is damaged if this product does not work properly, other costs resulting from labor charges, delays, vandalism,
negligence, fouling caused by foreign material, damage from adverse water conditions, chemical, or any other circumstances over which the Company has no control. This warranty shall be invalidated by any abuse, misuse,
misapplication, improper installation or improper maintenance or alteration of the product. Some States do not allow limitations on how long an implied warranty lasts, and some States do not allow the exclusion or
limitation of incidental or consequential damages. Therefore the above limitations may not apply to you. This Limited Warranty gives you specific legal rights, and you may have other rights that vary from State to State.
You should consult applicable state laws to determine your rights. SO FAR AS IS CONSISTENT WITH APPLICABLE STATE LAW, ANY IMPLIED WARRANTIES THAT MAY NOT BE DISCLAIMED, INCLUDING THE IMPLIED

WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ARE LIMITED IN DURATION TO ONE YEAR FROM THE DATE OF ORIGINAL SHIPMENT.

A Watts Water Technologies Company

IOM-HS-Cube Max 1219 X0FHSCMIOM © 2012 Watts

Tel: [phone] • Fax: [phone] • foodservice.watts.com