JOWA Ag-S User manual

Ag-S Manual
Silver Ion Water Treatment System
M395
February 4, 2020

Date:
Manual:
Rev:
2020-02-04
M395
F2
JOWA Ag-S
Silver Ion Water Treatment System
Standard
Table of Contents
1.0 Introduction............................................................................................ 1
1.1 General ................................................................................................ 3
2.0 Technical Specification......................................................................... 4
3.0 Treatment of Water................................................................................ 5
3.1 Standard Installation – Tank Recirculate Mode.................................... 5
3.2 Direct Flow Mode ................................................................................. 6
3.3 Options................................................................................................. 6
4.0 Installation.............................................................................................. 7
4.1 Mounting .............................................................................................. 7
4.2 Piping Connections .............................................................................. 7
4.3 Electrical Connections.......................................................................... 8
4.4 Typical connections.............................................................................. 9
5.0 Operation................................................................................................ 9
5.1 Start Up................................................................................................ 9
5.1.1 Tank Recirculate Mode ...................................................................... 10
5.1.2 Direct Flow Mode ............................................................................... 10
5.1.3 Final Setup......................................................................................... 11
5.2 Operating the Menu System .............................................................. 11
5.3 Operating Modes................................................................................ 12
5.4 The Menu Structure ........................................................................... 13
5.4.1 Water System Tank Size Entry .......................................................... 16
5.4.2 Watermaker Flow Rate Entry (Optional – when using a watermaker) 16
5.4.3 Setting Final Silver Dosage Level ...................................................... 17
5.4.4 Set Volume for Flowmeter pulse (Optional – when using flowmeter). 17
5.4.5 Flush water through system – when solenoid valve installed............. 17
5.4.6 Setup Relays (Optional – when using outputs) .................................. 18
5.4.7 Select Direct Flow Mode .................................................................... 18
5.4.8 Setup Input for Direct Flow................................................................. 18
5.5 Error List ............................................................................................ 19
5.6 Replacement of the Electrode............................................................ 21
5.7 Maintenance ...................................................................................... 22
5.8 Flash Pattern for Power LED ............................................................. 22
6.0 Trouble Shooting................................................................................. 23
6.1 Resetting the Ag-S ............................................................................. 25
7.0 Spare Parts List ................................................................................... 26
8.0 Flow Diagrams ..................................................................................... 27
9.0 Mechanical Drawings .......................................................................... 29
10.0 Electrical Drawings.............................................................................. 30
11.0 Additional Items................................................................................... 31

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Silver Ion Water Treatment System
Standard
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1.0 Introduction
There are many ways to treat water to make it suitable for
drinking or to reduce biological growth within a water system. In
this manual we will explain how our Ag-S Silver Ion system
works. The JOWA Ag-S is a long term system used for storage
tanks where the water is kept for a period of time. After a 4 hour
contact time the silver ions kill bacteria and prevent re-growth.
The JOWA Ag-S is a well-known product in the shipping world.
Since its introduction in 1970 several thousand ships have installed it. The process
by which the bacteria and algae are killed is called oligodynamical sterilization. The
silver ions are released by electrolysis from two silver plates within a special
electrode unit when a controlled current (DC) is driven through them.
The JOWA Ag-S electrode unit consists of two high purity (99.99%) silver plates.
The water passes through the center of the electrode and between the two silver
plates. The released silver ions, following the current direction between the plates,
are forced by the water to flow out of the electrode chamber and into the piping
system. By changing the current direction once every ten minutes the silver ions will
be released evenly from both plates over a period of time. The periodic change of
Electrolysis Electrolysis
with Water Flow

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Silver Ion Water Treatment System
Standard
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current also keeps the plates clean, eliminating otherwise necessary regular
cleaning.
Treating drinking water using silver is a very old method and has been used
frequently in many parts of the world since ancient times. Before introduction of
penicillin, silver was used in many medical products and has proven to be effective.
Today silver is used in thousands of products to prevent biological growth.
The JOWA Ag-S can have the concentration of silver ions set for any value between
0.025 mg/l (25 ppb) and 0.10 mg/l (100 ppb). The most common settings are either
0.04 mg/l (40 ppb) or 0.10 mg/l (100 ppb) silver. This setting is user controlled and
depends on the ruling administration.
The electronics automatically adjusts the silver output dependent upon volume of
water selected, the flow rate of the watermaker, or automatically when an optional
flowmeter is used. An alarm is activated when the electrode is consumed or any
other system problem is detected. An optional audible/visible alarm can also be
fitted in the main control room to indicate any malfunction of the unit (e.g. low flow of
water, electrode consumed).
The user should measure the silver ions concentration annually. Samples should be
taken from the outlet of the storage tank(s) and at the extremity of the system.
Care must be exercised over the collection and storage of the samples, and it is
strongly recommended that the advice of a competent laboratory is sought and
followed. Normally such a laboratory will supply full instruction and sterilized bottles.
The ruling administration should be advised of any low concentrations.

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Silver Ion Water Treatment System
Standard
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1.1 General
To obtain all the advantages from operating a JOWA Ag-S, ensure that all users
have adequate education of the equipment, that the installation is correct and that
the Ag-S is maintained and operated in accordance with the instructions in this
manual. The correct function of the equipment cannot be guaranteed if the user fails
to follow these instructions.
Before installation and start-up, read this manual carefully.
Supplier and manufacturer: JOWA USA, Inc.
59 Porter Road
Littleton, MA 01460
USA
Phone: [phone]
Fax: [phone]
Email: [e-mail]
www.jowa-usa.com
JOWA USA, Inc. is part of the JOWA companies with the head office located at:
JOWA AB
Tulebo 865
S-428 34 Kållered , Göteborg
Sweden
Phone: [phone]
Fax: [phone]
Email: [e-mail]
www.jowa.com

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Silver Ion Water Treatment System
Standard
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2.0 Technical Specification
Type Value
Capacity (Maximum) 15.0 m3/h (3,962 gal/h)
Silver Dosage 0.025 to 0.10 mg/L; (25 to 100 PPB)
Current Range for Electrode 0-200 mA
Electrode Specification 99.99% Pure Silver; 280g
200g Ag usable at 0.04mg/L 5000 m3 (1,320,860 gallons)
200g Ag usable at 0.10mg/L 2000 m3 (528,344 gallons)
Voltage, Input for system 90 – 250 VAC 48/65Hz
Power Consumption < 15 W
Display 20 Characters by 4 Lines LCD with backlight
Relays (Outputs) 3 – Dry Contacts; NC/C/NO that can be set for
Power; Alarm or Pump On
5 A max 250 VAC
Inputs 4 User Configurable Switch Inputs;
Flowmeters, Remote Start (Water On)
Ratings: VOC = 4.6 VDC; ISC = 2 mA
Dimensions Unit See Mechanical Drawings: Section 9
Chamber Test Pressure 9 bar (130 psi)
Dimension inlet DN15 BSPP Female G½” (Optional NPT)
Dimension outlet DN10 BSPP Female G⅜” (Optional NPT)
Empty Weight 8.0 kg (17.6 lbs)
Chamber Material AISI 316L
Flowmeter (optional) Pulse Type, L/pulse adjustable within Ag-S
Operating Temperature 5 - 60°C (41 - 140°F)
Ingress Protection for Enclosure IP64 EN 60529
Color (Control Cabinet) RAL 7040 (Silver)
Water Conductivity 65µS/cm2or higher

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3.0 Treatment of Water
3.1 Standard Installation – Tank Recirculate Mode
Read this section in conjunction with the full size drawing in Section 8, flow diagram.
Fig 3.1
Standard Installation for the Ag-S system is on a vessel with a water supply system
that incorporates bunkered water and water from production plants (either reverse
osmosis or evaporation plants).
The Ag-S is installed after the pressure vessel (hydrophore tank) in a branch line
from the main water supply line. Pressure for the Ag-S is provided by the hydrophore
pump.
The Ag-S unit doses silver into the branch line. This branch line is then directed back
to the ship’s storage tank where the silver ions can treat the entire ship’s fresh water
supply. See figure 3.1
The silver concentration in this branch line from the Ag-S to the storage tank is very
high. When this water comes in contact with the “newly made” or bunkered water in
the storage tank the concentration will be correct.
The silver must be allowed a minimum 4 hours contact time with the water in the
fresh water storage tank to have full effect.

Flow switch FS01
Valve V01
Branch line

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The valve V01 is controlled by the Ag-S and will open when the unit is actively
producing Silver Ions. The water will then go through the silver chamber; in at the
bottom and out at the top. The flow switch FS01 will tell the system if there is water
flow going through the chamber.
The Ag-S can be controlled by a remote signal. A signal from a watermaker can start
the unit and the Ag-S can send a signal to the watermaker to stop if the Ag-S unit
stops. This can happen with certain error conditions.
The system can operate in a Volume mode where the User enters a known quantity
of water when bunkering water from shore or a known amount of water has been
produced.
3.2 Direct Flow Mode
If a storage tank is not available to support the recirculate mode the unit can be
setup in the Direct Flow mode and dose the Silver Ions into the stream only when
water is produced or flowing in the main line. In this mode the unit has a reduced
flow and PPB range. See Fig 5.1.2 Note that a 4 hour contact time is still required
for the Silver Ions to be effective.
3.3 Options
A flowmeter can be installed in the water production plant line. The Ag-S will
determine the correct dose of silver based on the flow signal from the meter. A
second flowmeter can also be installed if you want to monitor both bunker and
production water lines. NOTE! An optional flowmeter (PN 92000-00023 or other
pulse output flowmeter) is required if the unit is to be run in this mode.
As an extra protection a shut off valve V02 can be installed on the main pipe to stop
the water flow from the watermaker or the bunker line. This is can be done to avoid
any non-treated water from being produced or bunkered. In the case of using this
valve with a watermaker there should also be a stop signal connected from the
Ag-S to the watermaker.
The standard Ag-S is designed to be hard wired to an electrical supply. An external
power switch can be install by the user or if desired an optional switch can be
mounted to the left side of the enclosure.
The system can be modified for non-standard installations. JOWA will give you
support when you have special installation requirements.

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Silver Ion Water Treatment System
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4.0 Installation
4.1 Mounting
The JOWA Ag-S consists of a standard cabinet with all the electronics, an electrode
chamber made with high grade electro-polished stainless steel, shut off valve, flow
setting valve with flow indicator, flow switch, and two ball valves to isolate the
chamber.
Additional parts (optional):
Shut off valve for bunker line
Shut off valve for production line (watermaker)
Flowmeter for production line and/or bunker line (PN 92000-00023)
All parts are mounted on a common polished stainless steel plate ready to be
installed on a bulkhead. (Flow switch FS01, Flow regulator and the valve V01 are
supplied loose. Attach as shown below and per mechanical drawing in Section 9.)
To save space the unit can be removed from the plate and individual items mounted.
To gain access to the inside of the
enclosure remove the two screw
covers on either side of the unit. A
flat head screw driver can be used
to help pry these off (perpendicular
to the display face). Four Phillips
screws will then be visible that
allow the cover to open. The cover
swings open with a simple left side
hinge.
4.2 Piping Connections
The connections are female DN15 BSP for the input (bottom) and DN10 BSP for the
outlet (top right). An optional conversion kit (PN 2117200) is available that converts
this to NPT male fittings for connection to NPT piping.

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4.3 Electrical Connections
The Ag-S is designed to be connected to 100 - 240 VAC, 50/60 Hz.
Terminals (Left to Right at bottom of PCB)
Label
100 – 240 VAC ~Power Supply input
100 – 240 VAC ~Power Supply input
100 – 240 ⏚Power Supply ground
Relay 1 NC Normally Closed terminal; typically Activate Pump when Ag-S is on
Relay 1 COM Common terminal; typically Activate Pump when Ag-S is on
Relay 1 NO Normally Open terminal; typically Activate Pump when Ag-S is on
Relay 2 NC Normally Closed terminal; typically Alarm relay
Relay 2 COM Common terminal; typically Alarm relay
Relay 2 NO Normally Open terminal; typically Alarm relay
Relay 3 NC Normally Closed terminal; typically Power relay
Relay 3 COM Common terminal; typically Power relay
Relay 3 NO Normally Open terminal; typically Power relay
24 V + Valve Positive terminal for the flow valve for the chamber
24 V - Valve Negative terminal for the flow valve for the chamber
Chamber Flow In + Positive terminal input for the flow switch for the chamber
Chamber Flow In - Negative terminal input for the flow switch for the chamber
In 1 + Positive terminal input typically for optional flowmeter #1
In 1 - Negative terminal input typically for optional flowmeter #1
In 2 + Positive terminal input typically for optional flowmeter #2
In 2 - Negative terminal input typically for optional flowmeter #2
In 3 + Positive terminal input typically for the watermaker run signal
In 3 - Negative terminal input typically for the watermaker run signal
In 4 + Positive terminal input typically not used
In 4 - Negative terminal input typically not used
24V CAN Bus +24VDC for Suppling power to items on the CAN Bus
GND CAN Bus Ground for Suppling power to items on the CAN Bus
L CAN Bus CAN Bus Signal CANL
H CAN Bus CAN Bus Signal CANH
Terminals (Center Right of the PCB)
Label
Ag1 Connection for one side of the Silver electrode (prewired)
Ag2 Connection for other side of the Silver electrode (prewired)
(Polarity is not important with this connection)
Jumper (Lower Right of the PCB)
Label
J1 On CAN Bus Terminator – On when single unit only
J1 Off CAN Bus Terminator – Off when multiple units connected

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Silver Ion Water Treatment System
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4.4 Typical connections
(see flow diagram Section 8 and electrical Section 10)
1. Power input on 100-240 VAC terminals
2. Solenoid valve V01 on 24 V Valve + and –; Brown +, Blue –, Green not used
3. External alarm to Relay 2 NO and Comm (Optional)
4. Electrode to Ag1 and Ag2 (Prewired)
5. Flow switch to Chamber Flow In + and – ; Brown +, Black –
6. Flowmeter to In 1 + and –(Optional)
7. Fixed flow to tank signal from watermaker In 3 + and –(Optional)
8. CAN Bus Terminator Jumper set to On (Center and Top pins connected)
The Relays and Inputs are universal and can be set up for any combination of the
available settings.
Relay Options
a. Unused Select when the relay is not used
b. Pump When a pump is used for water flow through the Ag-S
chamber (the bypass is not connected to a pressurized line).
c. Alarm If an Alarm condition is active the Relay will close
d. Power When the Ag-S is ready to operate the Relay will close
Input Options
a. Unused Select when the input is not used
b. Fixed flow to tank A watermaker or other signal is used to signal water
flowing into the storage tank (Tank recirculate mode only)
c. Flowmeter pulses A flowmeter is connected in the line to the storage tank
d. Direct Flow Flow input without a storage tank to indicate flow (Direct
flow mode only)
5.0 Operation.
5.1 Start Up
Open inlet and outlet valves. Check for leaks.
Check that the green (LED) lamp "Power" is illuminated or flashing.
Determine if you will operate the system in Tank recirculate mode with water
flowing into a storage tank or in Direct flow mode when water is not recirculated
from the storage tank. Skip to section 5.1.2 if operating in Direct flow mode.

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Fig 5.1.2
5.1.1 Tank Recirculate Mode
See section 3.1 on when to use Tank Recirculate Mode. On the first start up the
system must be setup with the following items:
1. The Tank recirculate mode must be selected. See Setup Menu section 5.4.1
2. Enter the capacity of the fresh water tank. This determines some internal
settings to optimize the silver electrode life. See Setup Menu section 5.4.1
3. Enter the flow rate from the watermaker (if equipped)
It is important that this set value is the actual flow from the
watermaker. For safe operation the flow should be checked regularly.
See Setup Menu section 5.4.2
4. Enter the desired final silver dosage level; 0.025 mg/l (25 ppb) – 0.1 mg/l
(100 ppb), typically it will be either 0.04 mg/l (40 ppb) or 0.1 mg/l (100 ppb)
and this depends on the ruling administration. See Setup Menu section 5.4.3
5. Optional - Enter the volume of water for each pulse when using a flowmeter.
See Setup Menu section 5.4.4
5.1.2 Direct Flow Mode
See section 3.2 on when to use Direct Flow Mode. (Skip this section if using Tank
recirculate mode)
On the first start up the system must be setup with the following items:
1. The Direct Flow mode must be selected. See Setup Menu section 5.4.7
2. Set the desired silver dosage level. See Setup Menu section 5.4.3
3. The input for fixed flow must be setup along with flow rate entered.
See Setup Menu section 5.4.8
The chart below shows the flows that are acceptable for the Ag-S in this mode.

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5.1.3 Final Setup
1. Adjust the flow through the chamber to approximately 3 l/min. by
adjusting the flow setting valve. The bottom of the float should
be at the 3 l/min. line. See Setup Menu section 5.4.5 to
run water through the system without producing silver ions.
2. Set up Relays if you want to have an external alarm, use a pump
to move water through the Ag-S or control another solenoid with
the power-on option. See Setup Menu section 5.4.6
5.2 Operating the Menu System
When power is first applied to the unit the application program of the Ag-S is started.
It will search for any optional systems (such as remote Ag-S units) that are
connected. If only one unit is found it will immediately go to the Main Menu. If you
have additional equipment connected to the system then it will prompt you to connect
to a particular unit. Pick the serial number of the unit you want to control or display.
The serial number is located under the left side screw cover. See section 4.1 for
instructions on how to remove the side screw covers.
On the display, the main menu will be shown. This menu consists of a number of
screens that allow you to adjust and/or set all the system parameters such as; silver
consumption, Relays, Inputs and perform Diagnostics if the system is not operating
properly. See Section 5.4 for the complete menu structure.
You navigate in the menu system by pressing
the buttons:
Up Down
Right Left
Enter
On/Off
The On/Off button turns the display backlight on
or off and returns the display to either the main
menu or if treating water, to the untreated water
status or to the flow status in Direct flow mode.
The Ag-S still operates when the display is
turned off. The production of Silver Ions is
indicated when the Power LED is on steady and not flashing.

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5.3 Operating Modes
(Under the Setup menu Tank recirculate or Direct Flow must be first selected)
Volume Mode – You enter the amount of water to be treated. (Tank recirculate Mode)
1. Select Operate and press Enter
2. Select Untreated water and press Enter
3. Select Add and press Enter
4. Select the units you want to use; Liters,Gallons,Cubic meters and press
Enter
5. Using the Left and Right arrows go to the position you want to change and
press the Up arrow to increase the value or the Down arrow to decrease the
value.
6. When you have input the amount of water that was added press Enter.
7. The display will then show the amount of untreated water and will count down
to zero which will indicate that the full amount of water has been treated to
the set silver dosage amount.
8. If you want to change the amount of water to be treated press the Left button
and it will bring you back to the screen to Add, Show or Reset.
9. You can Add more untreated water and this will add the new amount to the
existing amount. (See line 3 above)
10. You can Show the amount left to be treated
11. You can Reset the amount back to zero. You will be asked to confirm that
you want to stop water treatment. Either Cancel or Confirm
Auto Mode – When connected to either a flowmeter or the watermaker run signal
with water recirculating to a tank. (Tank recirculate Mode)
1. When connected to a flowmeter the proper dosage will be determined by the
number of pulses that are received. Setup of the flowmeter input is required.
See Setup Menu section 5.4.4
2. When connected to a watermaker and using the run signal a Fixed flow to
tank input must be setup. See Setup Menu section 5.4.2
Direct Flow Mode – The Silver Ions are dosed into the stream only when water is
produced or flowing in the main line. The water flowing signal automatically starts
the production of silver ions (See Section 5.4.8 for setting up input).
1. Select Operate from the main menu and then Direct Flow and the display
will show the set flow rate (liters/minute) and Ag PPB concentration when
water is flowing. Pressing the On/Off button once if the display is not active
or pressing it twice if you are anywhere in the menu system and it will also
show the set flow rate and Ag PPB if water is flowing.

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5.4 The Menu Structure
In the menu system there are multiple screens to setup, operate, and if needed,
diagnose the equipment.
The general way to move within the menu structure is as follows:
The up and down arrows move among the possible choices. You will notice that
the actual choice that is currently selected will become a solid triangle. See the
example below.
>This is a possible choice that is not selected
This is the possible choice that is selected
When the desired menu item has been chosen, then pressing the center button will
select that item and the sub menu items will then be available.
When you have a solid left triangle in the upper left corner ( ) pressing the left
arrow will bring you back to the previous menu.
In the figures below you can see the menu structure.
Setup Menu
Main Menu
Operate
Status
Setup
Diagnose
Device
Reset
Relays
Inputs
Flush
Relay1
Relay2
Relay3
Input1
Input2
Input3
Unused
Pump
Alarm
Power
Input4
Solid
Flashing
Flash Seconds
Unused
Fixed flow to tank
Flowmeter pulses
Tank/dir
Contrast
Tank recirculate
On/Off
Ag PPB
Show
Direct flow
Tankless flow
Relay Submenu Input Submenu

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Operate Menu - Tank Recirculate Mode
Operate Menu - Direct Flow Mode
Status Menu
Main
Menu
Operate
Status
Setup
Diagnose
Device
Reset
Electrode
Life
Uptime
Volts, Amps, Ohms
Main Menu
Operate
Status
Setup
Diagnose
Device
Reset
Untreated water
Errors
Add
Liters
Gallons
Meters^3
Show
Liters
Gallons
Meters^3
Reset
Cancel
Confirm
Error List
Sec. 5.5
Ack
New
electrode
s
Confirm
Main
Menu
Operate
Status
Setup
Diagnose
Device
Reset
Direct
Flow
Errors
Error List
Sec. 5.5
Ack
New
electrodes
Confirm

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Main Menu
Operate
Status
Setup
Diagnose
Device
Reset
Firmware
Pwr supp
Inputs
LEDs
Outputs
Buttons
Diagnose Menu
Device Menu
Main Menu
Operate
Status
Setup
Diagnose
Device
Reset
Choose
Show
Set Unit
Number

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Reset Menu
5.4.1 Water System Tank Size Entry
(Tank recirculate Mode)
1. Under the Setup section of the main menu you need to enter the
maximum capacity of your fresh water tank.
2. Select Tank/Dir and press Enter
3. Select Tank recirculate and press Enter
4. Select Set and then Select the units of measure
5. Enter the maximum capacity of the fresh water tank. A value between
3m3(793 gal.) and 15m3(3,962 gal.) is acceptable. If you have a
smaller or larger tank just enter the lowest or highest acceptable value.
If you have a small tank and want to treat your water faster you can
select a larger tank size. The size selected will be treated to 25ppb in
1 hour. If you want to treat twice as fast then select a tank size twice
as large. Lower settings will make the electrode last slightly longer,
however, it will take longer to treat to the desired Ag level.
5.4.2 Watermaker Flow Rate Entry (Optional – when using a watermaker)
(Tank recirculate Mode)
1. Under the Setup section of the main menu you need to enter the output
flow rate of the watermaker.
2. Select Inputs and press Enter
3. Select In 3 and press Enter (typically In 3 or other input if watermaker
signal wired to alternate terminal)
4. Select Fixed flow to tank and press Enter
5. Select Set or if entering this input after a value has already been
entered a Show option will be available to just show the current value.
Main Menu
Operate
Status
Setup
Diagnose
Device
Reset
Ag-S Device
Control Panel
Ag-S to
factory def

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6. Select the units of measure and press Enter
7. Input the flow rate from the watermaker and press enter
8. Select the watermaker Polarity; Closed=On is normal and then press
enter
5.4.3 Setting Final Silver Dosage Level
1. Under the Setup section of the main menu you need to enter the
desired silver ion dosage level.
2. Select Setup and press Enter
3. Select Ag PPB and press Enter
4. Input the target PPB concentration and press Enter (100ppb, 0.1mg/l
is the maximum and 25ppb, 0.025mg/l is the minimum). Typically
40ppb or 100ppb is selected and depends on the ruling administration.
5.4.4 Set Volume for Flowmeter pulse (Optional – when using flowmeter)
(Tank recirculate Mode)
1. Under the Setup section of the main menu you need to enter the
volume of water for each pulse of the flowmeter.
2. Select Inputs and press Enter
3. Select In 1 and press Enter (typically In 1, or other input if flowmeter
signal wired to alternate terminal)
4. Select Flowmeter pulses and press Enter
5. Select Set or if entering this input with the same input choice a Show
option will be available to just show the current value.
6. Select the units of measure and press Enter
7. Input the Volume per pulse from the flowmeter and press enter
8. Select the flowmeter Polarity; Closed=On is normal and press enter
5.4.5 Flush water through system – when solenoid valve installed
1. In the Setup section of the main menu select Flush and press Enter.
2. The heading will indicate the current status of solenoid valve; Flushing
Off when the valve is closed and Flushing On when the valve is open.
If a relay has been setup for Pump it will also close.
3. Press Enter to toggle between the two states. The screen will give
you the status of Inputs 1 – 4 and the flow switch. A “ –“ indicates not
active and a “ ▓ “ active. Confirm that all the air has flushed out of the
system and then proceed to the next step.
4. Adjust the flow regulator to 3L/min and confirm that the flow switch
opens and closes with the change in the flushing state. If the regulator
is confirmed to be at 3L/min and the status does not change, then the
flow switch will need to be adjusted. See Section 11 on how to adjust
the flow switch.