3M SFT Series Installation guide

Brand: 3M

Model: SFT Series

Type: Installation guide

This manual is also suitable for

3M SFT Series is a water softener that provides high-quality water for your home. It automatically removes hardness minerals, such as calcium and magnesium, from your water, protecting your appliances and giving you softer, smoother water. The SFT Series is easy to install and maintain, with a built-in 24-hour time control system and intelligent control system for efficient water softening.

3M SFT Softener

Installation and Operating Manual for model:

SFT - 150/200

Please read this user manual carefully

and keep this manual properly

INSTALLATION PRECAUTION

Incoming Water Temperature 4.4-37.8

C (40-100

Incoming Water Pressure 172-862 kPa (25-125 psi)

Voltage / Frequency 220V / 50Hz

Before installation of this product, please ensure that all conditions meet local water and electricity

requirements and relevant laws and regulations. If you have any question, feel free to contact your local

sales representative or the 3M Company.

1. The packaging materials could pose as a danger to children. Keep the packaging materials (such as

plastic bag) out of reach of children;

2. To reduce the risk of choking, do not allow children to have access to small parts during the

installation of this product.

3. Do not use with water that is microbiologically unsafe or of unknown quality without adequate

disinfection before or after the system.

4. Install system on COLD water lines only. The temperature of the incoming water should be between

4.4-37.8oC (40-100oF).

5. Do not install if water pressure exceeds 172-862 kPa (25-125 psi). If water pressure exceeds 862 kPa

(125 psi), you must install a pressure limiting valve.

6. Use the original power adapter provided with the system and connect it to home socket. The rated

voltage of which should be 220V/50Hz. The power socket should be grounded and equipped with

overload protection units (such as breaker or safety fuse).

7. Do not install system near high temperature area or equipment.

8. Recommended to install system indoor or under shelter.

9. Protect from freezing. Drain system when room temperature drops below 40°F (4.4°C)

10. Do not install system where water lines could be subjected to vacuum conditions without

appropriate measures for vacuum prevention.

11. Take care when using pliers or pipe wrenches to tighten plastic ttings, as overtightening may cause

damages.

12. To ensure that the installation conforms to your country/state plumbing requirements, it is

recommended that the installation be performed by a licensed plumber.

13. SHUT OFF FUEL SUPPLY TO WATER HEATER after water supply is shut o.

14. Failure to install the system as instructed will VOID the warranty.

Operating Parameters

3M SFT Softener

Table of content

One General introduction

Two Requirements for installation and notice

1 Product specifications...............................................................02

2 Product structure......................................................................03

3 Product function........................................................................05

Requirements for installation and notice......................................06

Three Main steps for installation

1 Preparation before installation

2 Installation of bypass-valve.......................................................07

3 Connection of inlet and outlet pipe...........................................08

4 Installation of drain pipe and overflow pipe..............................09

5 Power connection....................................................................09

..................................................07

Four Setting and operation of the controller

1 General introduction of the controlling interface........................11

2 Parameters setting in installation and debugging......................11

3 Checking and setting of operation parameters..........................12

4 Manual operation of cleaning and regeneration........................13

5 The introduction of cleaning and regeneration process ...........14

6 Checking of historical data........................................................15

Five Water flow test of the Softener

1 Primary inflow of the Softener..............................................17

2 Working conditions of bypass-valve.....................................17

3 Debugging of salt washing and water injection....................18

4 Debugging the softener and other notes..............................18

Six Maintenance and trouble-shooting of the Softener

1 Daily operation and maintenance of the Softener

2 Troubleshooting of the Softener...........................................20

3 List of components on the controller.....................................21

................19

Seven How to protect your rights and interests?

1 Quality and warranty.............................................................25

One General introduction

1.1 Product Specifications

Flow Rate per Hour

Above index may change without specific notice.

4.4-37.8

C (40-100

172-862 kPa (25-125 psi)

220V / 50Hz

Φ13mm, Φ16mm

¾”

1.5 ton 2 ton

SFT-150 SFT-200

Incoming Water Temperature

Incoming Water Pressure

Voltage / Frequency

Water Inlet / Outlet Connection

Drainage Connection

1.2 Product Structure

SFT-150

SFT-200

470

483.5

460

482.5

661

1123

≤21

≤35

502

964

Bypass Control Valve

Inlet and Outlet Control Valve

3/8” Polyethylene Tubing

Overflow Port Connector

Brine Valve Assembly

Brine Tank Assembly (incl Cover)

Body

Resin Tank assembly (including a center tube set parts,

ion exchange resin)

Bracket

Brine Tank Cover

Control Valve Assembly (including limiting valves, electrical

power adapter)

Drain Connection

Cover

Power adaptor

Plastic packing components

1.3 meters

Product Dimension (mm)

Width

A (mm)

Product Weight (excluding salt) (kg)

Depth Height

Item description

Quantity

Series

number

For models SFT-150 and SFT-200

1.3 Product function

Product features:

Softening:

The SFT series softener bears many characteristics, for instance high water yield, good

water softening effect, stable operation, etc.The SFT series softener is equipped with intelligent

operations such as automatic cleaning and automatic regeneration.This product bring to you and

your family a cleaner and smoother water experience with its high water quality for your everyday

life - the ideal choice for great bathing experience, daily washing and protection for hot water appliances.

- Built-in 24 hours time control system. Automatic cleaning can be achieved as per the setting of

regeneration interval and time (factory preset time is 2am);

- Intelligent control system can set the most economical and effective water softening program,

automatic cleaning and regeneration program according your water condition and consumption.

- Standard cleaning and regeneration process are as follows:

After source water flow through the softener under certain pressure and flow rate, sodium ions in the

ion-exchange resin will go on an exchange with the cations (calcium ion and magnesium ion) in the

water thus reducing the consistency of those ions in water and softening.

Backwashing:

The saturated ion exchange resin needs to be backwash before regenerating. One of the reasons

for doing that is to wash off broken resin and suspended impurity that have remained on the surface of

resin. The other reason is to loosen the firm resin bed so that the resin will have a better contact with the

brine solution, providing a more favorable regeneration condition for the ion-exchange resin.

Brine washing and regeneration:

Brine solution of certain concentration and flow rate flows through the ion-exchange resin,

regenerating the saturated resin so as to restore the original softening exchange capability.

Flushing:

Flash out any residual brine solution in the resin, until the standard qualified water is achieved;

compressing the resin so as to optimize the softening effect.

Brine tank replenishment:

Replenishing brine solution for future usage during regeneration.

2 Requirements for installation and notice

*The location to install this equipment must have AC power, water inlet and water outlet connection,

floor drain and sewage discharge outlet.

* All water pipe and electric connections used are recommended to meet relevant national standard;.

*Keep this equipment away from acidic substance or gas to avoid corrosion.

*Please use AC 220V / 50Hz single-phase electric power rather than any other power supply. The

power socket should be grounded and equipped with overload protection units (such as breaker or

safety fuse).

*The equipment should be installed vertically, not upside-down or horizontally. And it should be kept in

an upright position in transit. Do not allow it to be tilted while handling to avoid damages to

equipment.

*The recommended water incoming pressure is 172-862 kPa (25-125 psi). Booster bump or

pressure-relief valve is to be installed either below or above this standard.

*Make sure that the sewer drainage remains clear and that there is a distance between the drainage

pipe and sewage water to prevent back flow of sewage water into the eqeuipment. Do not insert

drainage pipe into the sewage water. Size of floor drain pipe should not be less than DN40.

*To avoid leakage in the system or pipeline over time, take cautious on the height and angle when

connecting the pipes to avoid stress.

* Take care when using pliers or pipe wrenches to tighten plastic fittings, as overtightening may cause

damages to the threading.

* Before connecting the inlet water pipe, clear any residual impurities and dirt in the pipeline first. Turn

off the main valve then connect the pipes to the equipment.

* Recommended to install system indoor or under shelter.For outdoor installation, it is recommended

to build awning and take protective measures for the body andthe pipeline. Prevent it from direct

sunlight, rain, wind, heat and cold, pollution, theft or animal damage.

* The temperature of the incoming water should be between 4.4-37.8oC (40-100oF). If the water

heater is installed after the softener, one-way check valve should be installed at the pipeline to

prevent backflow of hot water.

*Make sure that the softener is installed and maintained by 3M or 3M authorized dealer and installers.

3 Main steps for installation

3.1 Preparation before Installation

3.1.1 Checked that all installation conditions are met before installation. Confirm that the inlet and outlet

pipes, power and floor drain of sewage discharge outlet are conform to the requirements.

3.1.2 First, turn off the main water supply. Then turn on the water faucet to drain off any

excess water from the pipe.

Width * Depth (mm)

500 x 700

SFT -150/200

Note: The above measurement is for recommendation only. The actual size for installation to be

determined based on site conditions.

3.1.4 Take the product out of the packing box and remove

all packing. Check the product for any damages that may

occur during transportation. Make sure that the equipment

is without any damage during the transport.

3.2 Installation of by-pass valve :

Locate the by-pass valve and in the accessory pack. Insert the 1” quick

connect nut, split ring and O-ring in the respective order shown in Fig3.2a.

3.1.5 To install and configure the softener, remove the upper lid

(Fig.3.1.4)

Fig. 3.1.4

Fig.3.2a Water Inlet Connector

O-ring

Split Ring

Fitting 1"

Plastic Male

NPT

1” Quick Connect Nut

The O-ring should be fitted into the 1” quick connect nut . And the 1” male NPT fitting connects to the

by-pass valve through the 1” quick connect nut. The by-pass valve assembly will then be connected to

the control valve body via the union connection (Fig 3.2a).

By-pass valve, Inlet and Outlet connector

Note: Do not use any tool to tighten the union connections.

Tightening by hand is sufficient.

3.1.3

Fig.3.3.2 Flow Direction Sign

Fig.3.3.3 Connection of Inlet and Outlet Pipeline

Soft Water Outlet

Hard Water

Inlet

3/4” Female

Connection

By-Pass Valve

3.3 Inlet / Outlet Pipe Connection

Notice:

Note: The operation guide is for reference only. Please contact the tube and

pipe seller should there are questions.

Alert: If the household electric system needs the use of cooler system as

electrical safety grounding to earth, jumper is suggested to ensure that the entire

softenerpipe to ground.

3.3.1 Confirm that the inlet water valve is turn off and confirm the

water outlet location.

3.3.2 Connect the inlet pipe and outlet pipe to the by-pass valve

according to the arrows marked on the bypass valve for water flow

direction (Fig3.3.2). Inlet & outlet connection of the bypass valve is

a ¾” BSP male thread.

3.3.3 Connection of pipe and water softener should be done after

completion of all the welding of PPR or brass pipe (not included with

system) to avoid damage to the softener components by any heat

generated by welding.

PPR Pipe Installation

Step1: Pipe-cutting. Cut pipe with a pipe cutter.

Attention: Cut the pipe as flat as possible, or it will influence the

welding result.

Step2: Marking. Make marking on the pipe before welding.

Step3: Heating. Insert tube and fitting into the die at the same time.

Attention: The typical heating period time is 8-9 seconds. Insufficient

or overheating will cause under heating or pipe to collapse.

Step4: Welding. Remove the tubes and fittings out of the welder,

and insert in place quickly and smoothly without any rotation.

Attention: Should the connection time be too long, connection will

not be strong or not in place.

Step5: Cooling. It is important to cool the pipe after welding.

Attention: Cooling time is generally 4-5 seconds. Avoid twisting, bent

and pulled before sufficient cooling.

* Avoid knocking the pipes or tubing during storage, transportation

and installation process.

* UV protective measures and insulation measures should be

taken when mounting the pipes.

* Take into consideration that temperature may cause deformation of

the pipe for surface mounted and non-concealed type of pipe installation.

* During pipe installation, the working environment temperature is preferably 5 degrees Celsius

higher. If less than 5 degrees Celsius, the heating time required is extended by 50%.

* Do not over tighten thread connections. Over-tightening may cause damages to the threading.

* Place machine on a flat surface. Inlet and outlet pipes should be secured with pipe holder to

avoid additional pressure or weight exerted on the bypass valve.

* Insulate the pipes and valves should there be a possibility of freezing.

3.4 Installation of drainage pipe and overflow pipe

Note: To ensure smooth operation for the water softener regeneration process,

ensure that there is no blockage of drains.

Note: If the drainage hose is placed too high or is inserted into the sewage, it will cause

pressure drop during water softener regeneration. This will cause incompletion of normal

salt wash regeneration process.

3.4.1 Connect flexible drainage hose (16mm inner diameter) to the drainage control valve. Use hose

clamps to secure hose to prevent hose from coming loose.

3.4.2 Connect the other end of flexible drainage hose to drainage outlet such as floor drain, drainage

pool. Avoid elevating the drainage hose. Long and bending angle is not advisable as “kink” hose may

occur and hose will then need to be replaced.

3.4.3 Secure drainage hose to drainage outlet firmly. During backwash and regeneration process, the

water pressure may loosen the water hose, causing water to sputter out of the drain area. To prevent

backflow of drainage water into the system, there should be clearance of at least 4 cm between the

end of the drainage hose and the sewage drain water. Never insert the drain pipe directly into the

sewage. Do not raised the drain hose to more than 2.5 meters above the ground.

3.4.4 Connect the 13 mm (inner diameter) hose to the barrel or overflow outlet of the salt tank

and secure with hose clamps.

3.4.5 Fix the overflow drainage hose to drainage outlet such as floor drain, drainage pool. The

overflow drainage hose must be below the overflow outlet. Do not connect with the 16mm inner

diameter soft drainage hose in 3.4.1.

Inlet and Outlet

Water Hose

Overflow

Drainage Hose

Drainage

Outlet

Floor Drain

Power Socket

Fig 3.4a SFT-150/200 Installation Guide

1 Display: Display of operating parameters, time parameters and operating status.

2) SET CLOCK: Switch to setting state, setting of time parameters, brine quantity parameters.

Saving of settings and exit setting process.

3) NEXT: Confirm setting. Switch to the next parameter setting.

4) / : Selection (increase or decrease) of setting value

5) REGEN: Regeneration at a scheduled time / Hold button for 5 seconds for immediate

regeneration / Returning to previous screen during the setting process

6) To Lock / Unlock Display Screen: Press the buttons in the following sequence: → NEXT →

→SET CLOCK

4.2) Installation and Commissioning Parameter Setting

4.2.1) A self- test procedure will be performed after the controller is connected to the power supply. It

is normal if sound of motor rotation could be heard.

4.2.2) After the self-test procedure is completed, press NEXT and simultaneously for 3 seconds to

enter the installation and commissioning parameter interface.

3.5 Power Connection

Insert the supplied 220-volt power adapter into the power outlet.

SET

Down

Regeneration

and cleaning

Display Screen

SET

CLOCK

SET HARDNESS

REGEN

4.1 Controller Panel Overview

Step 1: Setting Local Water Hardness

Set the water hardness in milligrams per

liter of calcium carbonate hardness using

the or . Default value is 340. Value

should range between 1-2500. To proceed

to Step 2, press NEXT. To exit setting

mode, press REGEN.

Note:Any usage of water during

regeneration process will affects

the regeneration effectiveness.

Hence, it is advisable to set

regeneration at time like 2:00am.

Note: Contact local 3M seller if you are unsure of the local water hardness.

Step 2: Days Override

Day override sets the number of days between regenerations and sets the maximum number of days

between regenerations. Default setting is 14 days. Set Day Override using or :

• number of days between regeneration (allowable range from 1 to 28); or “OFF”.

Press NEXT to go to step 3. Press REGEN to exit this setting.

Note: If value is set as a number (allowable range from 1 to 28), a regeneration initiation

will be called for on that day even if sufficient number of gallons were not used to call for

a regeneration.

Step 3: Setting of Regeneration Time:

To set start time – press the / to change the flashing Hour to the desired value. Press NEXT to

select the Minutes value. Once the Minute is flashing, press / to select desired value.

The default time is 2:00 am.

Press NEXT to proceed to Step 4. Press REGEN to exit this setting.

SET

CLOCK

SET

REGEN

DAY

REGEN

Note:Any usage of water during regeneration process will affects the regeneration

effectiveness.Hence, it is advisable to set regeneration at time like 2:00am.

Softening

Time

Current time interface

Capacity

Left

4.3 Setting of operational parameters

4.3.1 When the system is operating, one of two displays will be shown. Pressing NEXT will alternate

between the displays. One of the displays is always the current time of day. The second display is

one of the following: days remaining or gallons remaining. Days remaining is the number of days left

before the system goes through a regeneration cycle. Capacity remaining is the number of gallons

that will be treated before the system goes through a regeneration cycle. The user can scroll between

the displays as desired.

If the system has called for a regeneration that will occur at the preset time of regeneration, the words

REGEN TODAY will appear on the display. When water is being treated (i.e. water is flowing through

the system) the word “Softening” or “Filtering” flashes on the display if a water meter is installed.

4.3.2 Set Time of Day

The user can also set the time of day. Time should only need to be set after extended power outages or

when daylight saving time begins or ends. If an extended power outage occurs, the time of day will flash

on and off which indicates the time of day should be reset.

Step 1 - Press SET CLOCK.

Step 2 - Current Time (hour): Set the hour of the day using / button. AM/PM toggles after 12. Press

NEXT to go to step 3.

Step 3 - Current Time (minutes): Set the minutes of the day using / buttons. Press NEXT to exit Set

Clock. Press REGEN to return to previous step.

Note: If time of day is set incorrectly, the time set for regeneration process may be affected.

4.4.1 Sometimes there is a need to regenerate the system sooner than when the system calls for it,

usually referred to as manual regeneration. There may be a period of heavy water usage because of

guests or a heavy laundry day.

To initiate a manual regeneration immediately, press and hold the “REGEN” button for five seconds. The

system will begin to regenerate immediately. The request cannot be cancelled.

4.4.2 To initiate a manual regeneration at the present delayed regeneration time, press and release

“REGEN”. The words “REGEN TODAY” will flash on the display to indicate that the system will regenerate

at the preset delayed regeneration time.

4.4 Manual Regeneration

Note: For softeners, if brine tank does not contain salt, fill with salt and wait at least

two hours before regenerating.

Note: If you pressed the "REGEN" button in error, pressing the button again will

cancel the request.

4.5 Introductory to Regeneration Process

4.4.2 To initiate a manual regeneration at the present delayed regeneration time, press and release

“REGEN”. The words “REGEN TODAY” will flash on the display to indicate that the system will regenerate

at the preset delayed regeneration time.

Note: If you pressed the "REGEN" button in error, pressing the button again will cancel the request.

The regeneration process includes backwash, salt wash, rinse, second rinse, and water filling.

The total process takes about 50~110 minutes, depending on the model and parameters set.

When the system begins to regenerate, the display will change to include information about the step of

the regeneration process and the time remaining for that step to be completed. The system runs through

the steps automatically and will reset itself to help provide treated water when the regeneration has been

completed during the regeneration process, user can press REGEN to skip the countdown to proceed to

the next step.

4.5.1 The regeneration process screen will be displayed on the display panel. Backwashing will be

displayed first and the time remaining to complete the backwash.

4.5.2 After completing the backwashing process, the salt washing process will starts automatically and

displaying the time remaining to complete the backwash.

4.5.3 After completing the salt wash process, the system starts the second backwash process and

displaying the time remaining to complete this process.

4.5.4 After completing the second backwash process, the rinsing process will begins and the time

remaining to complete the rinse process will be displayed.

4.6 Diagonstic

Press and simultaneously for three seconds and release.

Note: If screen in 4.6.1 does not appear in 5 seconds, the lock on the

valve is activated. To unlock display screen,

press → NEXT → →SET CLOCK

4.5.5 After completing the rinsing process, the system starts the water filling process and displaying

the time remaining to complete this process

4.5.6 After completing the water filling process, the regeneration process is completed. The system will

return to normal operational mode and display panel will shows current time.

Change Bleach Washing to Rinse

Change water injection to Water Filling

4.6.2

4.6.2 Gallons, since last regeneration: This display shows the number of gallons that have been treated

since the last re generation. This display will equal zero if a water meter is not installed. Press the NEXT

button to go to next parameter. Press REGEN to return to previous step.

4.6.1 Days, since last regeneration: This display shows the days since the last regeneration occurred.

Press the NEXT to go to next parameter. Press REGEN to exit Diagnostics.

4.6.3 Gallons, reserve capacity used for last 7 days: If the valve is set up as a softener, a meter is

installed and Set Gallons Capacity is set to “Auto,” this display shows 0 day (for today) and flashes the

reserve capacity. Pressing the

button will show day 1 (which would be yesterday) and flashes the reserve capacity used. Pressing

the button again will show day 2 (the day before yesterday) and the reserve capacity. Keep pressing

the button to show the gallons for days 3, 4, 5 and 6.

The button can be pressed to move backwards in the day series. Press the NEXT button at any time

to go to next parameter. Press REGEN to return to previous step.

4.6.4 Gallons, 63 day usage history: This display shows day 1 (for yesterday) and flashes the

number of gallons treated yesterday. Pressing the button will show day 2 (which would be the

day before yesterday) and flashes the number of gallons treated on that day. Continue to press

the button to show the maximum number of gallons treated for the last 63 days. This display

will show dashes if a water meter is not installed. Press the NEXT button at any time to go to

next parameter. Press REGEN to return to previous step.

4.6.5 Flow rate, current: Turn the water on at one or more taps in the building. The flow rate in gallons

per minute will be displayed. If flow stops the value will fall to zero in a few seconds. This display will

equal zero if a water meter is not installed. Press the NEXT button at any time to go to next parameter.

Press REGEN to return to previous step.

4.6.6 Flow rate, maximum last seven days: The maximum flow rate in gallons per minute that

occurred in the last seven days will be displayed. This display will equal zero if a water meter is not

installed. Press the NEXT button to go to next parameter. Press REGEN to return to previous step.

4.6.7 Gallons, total used since last reset: The total number of gallons used since last reset will be

displayed. This display will equal zero if a water meter is not installed. Press the NEXT button to go to

next parameter. Press REGEN to return to previous step.

4.6.8 Days, total number since last reset: The total number of days the control valve has been in

service since last reset will be displayed. Press the NEXT button to go to next parameter. Press

REGEN to return to previous step.

4.6.9 Regenerations, total number since last reset: The total number of re generations that have

occurred since last reset will be displayed. Press the NEXT button to exit Diagnostics. Press

REGEN to return to previous step.

When desired, all information in Diagnostics may be reset to zero when the valve is installed in a new

location. To reset to zero, press NEXT and

buttons simultaneously to go to the Service/OEM screen,

and release. Press and simultaneously to reset diagnostic values to zero. Screen will return to

user display.

5. Water Flow Test of the Softener

5.1 Primary inflow of the Softener

5.1.1 Refer to Section 3 of the manual on the installation of the softener. Refer to Section 4 of the

manual to complete the setup of control valve and regeneration settings.

5.1.2 Activate regeneration manually by referring to Section 4.4 - “Manual Regeneration”.

5.1.3 Partially open INLET knob on bypass valve (Fig 3.3.2). This will allow the unit to fill slowly

from the bottom up, reducing air entrapment. Allow unit to fill slowly, failure to do so could result in

loss of resin to the drain.

5.1.4 Once a steady stream of water, no air, is flowing to drain the inlet and outlet knobs on the

bypass can be fully opened.

5.1.5 Slowly turn on the water faucet and main water supply. Once all air has been purged out of

the system and there is a steady flow of water, turn off water faucet and main water supply.

5.1.6 Initial water flow test has completed, open the inlet and outlet knob of bypass valve (Fig.

5.2.1) to check for any leakage or seepages. Repair any leakage or seepages.

5.2.1 Normal operation (Fig. 5.2.1): Untreated water enters the system via the inlet of the

bypass valve. Soft water exit system via the outlet of the bypass valve to users.

5.2.2 Bypass operation (Fig. 5.2.2): Untreated water enters the inlet of bypass valve and exit

the system via the outlet of bypass valve as the system is being bypass and no water is flowing

into the system. At this state, the bypass valve can be dismantle from the softener to conduct

any maintenance work on the softener.

5.2 Position of bypass-valve

Soft water Untreated water

Untreated water Untreated water

Fig 5.2.1

Fig 5.2.2

Untreated water Untreated water

5.2.3 Diagnostic operation (Fig. 5.2.3): Untreated water enters the inlet of bypass valve and diagnostic

operation can be perform when process such as manual regeneration is activated. Untreated water exit the

system via the outlet of bypass valve into the outlet pipe.

5.2.4 Off Mode (Fig. 5.2.4): Completely no water flow to the system or outlet pipe as bypass valve is off.

Fig 5.2.3

Fig 5.2.4

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