Smeg WO-02 Instruction manual

WO-02
Water treatment equipment for HORECA dishwasher applications.
SER AL NO.: __________________
PART NUMBER: __________________
Note: _____________________________________________
MANUAL
use and maintenance

-2-
NDEX
1. GENERAL INFORMATIONS ....................................................................................................................................3
1.1. MANUFACTURER / ASSISTANCE ............................................................................................. 3
1.2. CERTIFICATION ................................................................................................................ 3
1.3. PURPOSE OF THE MANUAL AND ITS CONTENTS ........................................................................... 3
1.4 CARE AND STORAGE OF THE MANUAL ...................................................................................... 3
1.5. IMPORTANT SYMBOLS TO REMEMBER ....................................................................................... 3
2. CHARACTERISTICS OF THE DEVICE....................................................................................................................4
2.1. RECOMMENDED USE ........................................................................................................... 4
2.2. SCHEMATIC REPRESENTATION ............................................................................................... 4
2.3 COMPONENTS .................................................................................................................. 5
2.4 DESCRIPTION .................................................................................................................. 5
2.5 TECHNICAL SPECIFICATIONS ................................................................................................. 6
2.5 GENERAL DIMENSIONS ........................................................................................................ 7
2.6 INTERNAL LAYOUT ............................................................................................................ 7
3. INSTALLATION ........................................................................................................................................................8
3.1 DISHWASHER REAR SIDE INSTALLATION ....................................................................................
3.2 DRAIN FITTING EN1717 .......................................................................................................
3.3 EXTERNAL PREFILTER INSTALLATION ...................................................................................... 10
3.4 DRAIN CAPILLARY REPLACEMENT .......................................................................................... 11
4. FUNCTIONING........................................................................................................................................................12
4.1 FIRST START-UP .............................................................................................................. 12
4.2 NORMAL USE .................................................................................................................. 12
4.3 LOW PRESSURE ALARM ...................................................................................................... 12
4.4 LEACKAGE ALARM ............................................................................................................ 12
4.5 INACTIVITY .................................................................................................................... 12
5. ENDUSER ORDINARY MAINTENANCE................................................................................................................13
5.1 FILTER REPLACEMENT ....................................................................................................... 13
6. PROFESSIONAL EXTRAORDINARY MAINTENANCE.........................................................................................14
6.1. REQUIRED TRAINING FOR MAINTENANCE PERSONNEL ................................................................... 14
6.2. RESPONSIBILITIES OF MAINTENANCE PERSONNEL ........................................................................ 14
6.3 POWER CORD / POWER PLUG REPLACEMENT ............................................................................ 14
6.4 CHECK/REPLACEMENT OF OSMOTIC MEMBRANES ........................................................................ 15
6.5 PUMP REPLACEMENT ........................................................................................................ 16
6.6 CLEANING SOLENOID VALVE FILTER / SOLENOID VALVE REPLACEMENT .............................................. 17
6.7 MACHINE SANITATION ....................................................................................................... 18
6.8 FUSE REPLACEMENT / ELECTRONIC BOARD REPLACEMENT ............................................................. 1
6. VERIFICATION OF THE PRESSURE SETTINGS .............................................................................. 20
7 TROUBLESHOOTING ............................................................................................................................................21
ATTACHMENT I – CE LABEL .........................................................................................................................................24
ATTACHMENT II – MAINTENANCE LOG.......................................................................................................................24

-3-
1. GENERAL NFORMAT ONS
1.1. MANUFACTURER / ASSISTANCE
BUILDER
ASSISTENCE
SMEG S
.p.
A
.
Via L. da Vinci, 4
42016, Guastalla
(RE) Italy
Personal Data of the Retail Seller
1.2. CERTIFICATION
WO-02 was manufactured in compliance with the following EU Directives:
Machines 2006 / 42 / EC
Low Voltage 2006 / 95 / EC
Electromagnetic Compliance 2004 / 108 / EC
The machine WO-02 respects the following technical regulations:
EN60 5-1:2004: Household and similar electrical appliances – Safety, Part 1: General requirements.
1.3. PURPOSE OF THE MANUAL AND ITS CONTENTS
This manual was written in order to supply the user with all the necessary information needed to facilitate
the autonomous and safe operation of this device. The manual contains information that is critical to the
operation and regular maintenance of the machine.
WARN NG
This user’s manual can be utilized by both technical and maintenance personnel.
All users and technicians are required to thoroughly read this manual before
installing or operating this device.
n accordance with this manual, the user should never perform any unauthorized
maintenance exclusively reserved for qualified technicians and maintenance
personnel, otherwise the guarantee will be rendered null and void.
WARN NG
All extraordinary maintenance operations must be done by qualified personell only.
1.4 CARE AND STORAGE OF THE MANUAL
The instruction manual is an integral part of this device and must be kept nearby at all times, and stored
inside the proper container so that it is protected from eventual damage or destruction.
1.5. IMPORTANT SYMBOLS TO REMEMBER
GENERAL WARN NGS
This symbol ndicates warnings or key information regarding the operation of this
device. Please pay close attention whenever you see this symbol.
This sy
mbol Indicates that specialized/portable equipment may be required to adjust or
repair the components of the device.
This symbol Indicates that a visual or in-depth inspection, etc. of the device may be
required.
ND CAT ONS OF DANGER
This symbol ndicates General cautions; risk to the operator.
This symbol ndicates danger of electrical shock or electrocution.
RESTR CT ONS
This symbol indicates general restrictions.

-4-
2. CHARACTER ST CS OF THE DEV CE
2.1. RECOMMENDED USE
WO-02 is an equipment designed for dish/glass wash machine water treatment. It is able to modify
organoleptic and chemical characteristics of potable water, reducing saline content.
The machine can preserve water from possible problems that can occur below the aqueducts, such as
infiltrations due to work on the network or breakage, and also from the consequences of keeping water in
decantation basins.
WO-02 is used to supply treated water to undercounter dishwasher and glasswasher machines with
atmospheric boiler “break tank” or similar.
If used with a dishwasher without break tank and rinsing pump, an external pressure tank of at least 18
liter must be installed between the osmosis equipment and the dishwasher; air precharge must be approx
2.5 bar.
The normal production of the machine is approx 100 liters/hour, with a dishwasher with “break tank”.
If an external pressure tank is installed, the normal production reduces to about 70 liters/hour, depending
on pressure tank backpressure.
ATTENT ON
The device is not intended to be
used by people (including children) whose physical,
sensory or mental disabilities are reduced, or lack of experience or knowledge, unless
they have been granted through the intermediary of a person responsible for their safety,
supervision or instruction concerning the use of the device. Children should be supervised
to ensure they do not play with the appliance.
ATTENT ON
The water requirements of the dishwasher installed after the WO-02 must respect the
maximum performance of the osmosis equipment.
All components of the dish/glass washmachine in contact with water must be compatible
with osmosis trated water.
It is forbidden to use brass; use only plastic parts and stainless steel parts.
Basins and tanks in AISI 304 must be without weldings as possible.
It is reccomended the use of parts only in plastic or in stainless steel AISI 316.
The company SMEG is not responsible of any demage or injury to things or people if
these instructions are not respected.
ATTENT ON
WO-02 is not a water purifier.
Using WO-02 to condition water that is not drinkable is ABSOLUTELY PROHIBITED.
2.2. SCHEMATIC REPRESENTATION
SCHEMAT C REPRESENTAT ON

-5-
2.3 COMPONENTS
2.3. 1 Prefilter
The device is supplied with an external PROFINE M BLU carbon block cartridge to ensure chlorine removal
and filtration of raw water.
2.3.2 Pump with motor 150W
To increase operating water pressure, it is installed inside the machine a pump mini 200 l/h, leaded by an
asynchronous motor.
2.3.3 Membrane
The membranes are the core of the machine; four membranes Filmtec TW30 1812 100gpd are installed.
2.4 DESCRIPTION
There are three external hydraulic connections on the back of the device, respectively, for the inlet water
¾”G, the outlet water ¾”G to the dish/washmachine and the line used for drain off (6mm diameter).
On the rearside of the machine, there is also the power cord, and air vents.
It is necessary to install an external prefilter PROfine BLU carbon block medium to ensure chlorine
removal and filteration of raw water.
The water flows then through the quick connection carbon filter. The carbon block filter facilitates the
elimination of the unpleasant chlorine taste, without compromising the desirable mineral properties of
the water. These activated carbon filters can also absorb potential trace organic micro pollutants, various
chemicals  organic and inorganic (i.e. chlorine composites), chlorine residue used to disinfect water,
haloforms, pesticides, surface-active agents.
From the connection to the main plumbing network, the water arrives to the inlet solenoid valve, and
with a T fitting to the min pressure switch and then to the pump.
The min pressure switch prevents the pump to run dry. In chase of low pressure, alarm is acustic signalled
and then the machine makes automatic restart after one minute.
When consecutives low pressure alarm occures, the restart delay automatically increases.
Water is then pumped at high pressure by the brass vane pump connected to the liquid cooled motor. The
water arrives at high pressure to the vessels contain the reverse osmosis membranes. The water
permeates the layer flowing into the collection tubes, and then it is directed to the main tube of the
membrane, wrapped in various layers. The permeate yield comes from the main tube of the membrane
and is sent directly to the outlet.
For automatic start/stop of the machine, a check valve and a max pressure switch are installed in the
permeate line, before outlet connection.
On the bottom and on the right side of the machine, there are two leakage probes (for vertical and
horizontal operating); if leakage occurs the machine stops automatically and makes acustic alarm.
The drain must be connected to the drain siphon with the backflow preventer fitting in the package.
The drain capillary is used to set the drain flow and recovery ratio.

-6-
WARN NG
The overall water quality depends on a number of variables: the concentration of saline
properties in the water, along with other retained elements, the temperature, water
pressure, and the total solubility of salt. The water quality may also vary according to the
kinds of salts or elements found in the local water source.
The treatment of water coming from a source that is particularly polluted with high
concentrations of impurities can cause the blockage of the membranes of the filters
and/or impede the overall water flow.
This device CANNOT be used as a substitute for a government approved desalinization and
anti-bacteriological plant.
2.5 TECHNICAL SPECIFICATIONS
WO
-
02
TECHNICAL SPE
CIFICATIONS
Height x Width x Depth
(mm)
424x472x120
Weight (kg)
16
Approved Decibel Level under normal operating conditions
(dB
(A)) <70
Membranes (nr. 4)
Filmtec TW30 1812 100GPD
Carbon filter
(external)
PRO:fine BLU medium
WATER SUPPLY SPECIFICAT
IONS
Water type
Potabile
Minimum temperature (°C)
5
Maximum temperature (°C)
35
Min
imum
inlet flow rate (l/h)
300
Maximum inlet pressure
600 kpa
Minimum inlet pressure
100 kpa
ENVIRONMENT SPECIFICATIONS
Maximum relative humidity (%)
0
Minimum ext
ernal temperature (°C)
3
Maximum external temperature (°C)
40
POWER SUPPLY SPECIFICATIONS
Power supply type
SINGLE PHASE + GROUND
Voltage (V)
230
Frequency (Hz)
50
Adsorbed current (A)
1.5
A
Power (W)
150W
Control board fuse type
T3.15A
PERMEATE WA
TER SPECIFICATIONS
Maximum flowrate at 15° C (l/h)
Approx 100
Maximum flowrate with 3 bar backpressure at 15°C (l/h)
Approx
70
Recovery (%)
See table
CAPACITY AND SUBSTITUTION FREQUENCY
Carbon filter PRO:fine BLUE Medium
200
hours
Reverse osmosis mem
branes
Max 3
years
Vane pump and solenoid valve
2000 hours
Hardness
(°dH)
35
White 30±5%
22
Black 40±5% White 30±5%
6
Blue 55±5% Black 40±5%
100
700
1200
Conductivity
µS
Machine must not be installed with water> 1200 mS or> 35 ° dH.

-7-
2
7
4
5
6
1
3
9
11
10
8
WARN NG
Any use of this device, which has not been stipulated in this manual, will constitute
IMPROPER USE, thereby rendering the guarantee null and void. The manufacture WILL
NOT be liable for any damages caused by the IMPROPER USE of this device, due to
negligence, failure to follow the manual, or permitting unauthorized maintenance
personnel to tamper with machine.
2.6 GENERAL DIMENSIONS
120
424
472
472
2.7 INTERNAL LAYOUT
Item:
1. Pump 200l/h
2. Motor 150W
3. Motor cover
4. Membrane housing 1812 100 gpd
5. Min pressure switch
6. Max pressure switch
7. Control board
8. Power supply
. Inlet solenoid valve
10. Drain 6mm
11. Permeate outlet ¾”

-8-
44 1
5
2
3
3. NSTALLAT ON
The installation of the WO-02 must be done in a fresh, dry and good aerated place.
WARN NG
The installation of the
WO
-
02
must be performed by
qualified personnel in accordance
with applicable laws and standards. For the installation, it necessary to place a inlet
water valve (to close water supply during maintenance jobs), a check valve, sample
valves on inlet and outlet and a power socket.
Please avoid exposure to sudden changes in temperature, thereby causing internal
condensation to form and damage electronic parts.
NSTALLAT ON CHECK L ST
The EU approved ground cable of the power su
pply must be connected to the device.
The power supply cable must be compatible with the device as indicated on the required
tags and labels affixed to the rear of the machine.
The electrical cable of the circuit must not be less than 1 mm in diameter
The voltage of the device must comply with the standards of the local area or country
(power surges must be limited to no more than 10%)
The machine can be installed
horizontal or vertical position.
n vertical position, display and hydraulic connections must lay on the upper side.
n the capillary bag, four adhesive bumpers are supplied.
NSTALLAT ON
1. Water inlet
2. Power supply
3. Permeate outlet
4. Air vents
5. Drain
6. Quick connection head
7. Fitting 10x3/4”F
8. Stem elbow 10mm
. Quick connection cartridge
10. Pipe PE 10x7mm
6
78
8
8
7
1
8
9
10
10

- -
3.1 DISHWASHER REAR SIDE INSTALLATION
403
420
1
1
1
1
It is possible to fix the equipment on the rear side of the dishwasher, with four screws
M5, preassembled on the base of the metal case.
For the installation on the rear side of the dishwasher, a special “rear side kit”
must be ordered separately.
3.2 DRAIN FITTING EN1717
Install the drain back flow preventer fitting EN1717 in a standard drain pipe diam.
50mm with a quick connection.
Assembly the famale fitting F 6x1/2” on the drain fitting and connect the pipe 6mm.
The pipe 6mm must not be bended anoumusly or have restrictions that can reduce the
flowrate.
If drain is clogge, water comes out through the lateral holes.
Item
1. Quick connection 6 mm
2. Famale fitting 6x1/2
3. Drain fitting EN1717
4. Connection for famale d.50 drain pipe
Item
:
1. Screws M5 equipment fixing
2
1
3
4

-10-
3.3 EXTERNAL PREFILTER INSTALLATION
Wall bracket installation
Before the marking and the final assembly, check that the position allows the passing of the hand for an
easy disassembly of the cartridge.
1. Check the mounting sense more convenient for the installation, to be carried out by orienting the
entry to left or right as needed
2. The inlet and outlet fittings must be positioned in any case at 0 ° to the bracket.
3. With the supplied screws(36) mount the head(28) on the wall support by tightening the screws.
4. Identify the appropriate place on the wall for installation of the wall bracket, ensuring there is
enough room for mounting / dismounting of the cartridge.
5. Draw with a pencil the holes positions (25) on the wall and drill with d. 8mm bricks drill; insert the
wall plugs (34), then fix the bracket with the supplied screws (35).
6. Joint the entry and exit pipes in the direction shown by the arrow on the head; the 6mm pipes must
be perpendicularly cut and insert in the quick-connect coupling of the head until the base.
tem:
25. Holes for head fixing
26. Head entry
27. Head exit
28. Head
2 . Cartridge
34. Wall plugs
35. Wall screws
36. Head-bracket fixing screws
OK
NO
NO
NO
342 25
46
60
386,5
62
110,8
475,8

-11-
3.4 DRAIN CAPILLARY REPLACEMENT
The machine is supplied with
the standard drain capillary installed; the softened water
capillary and the hard water capillary are packed in the accessories bag:
-black (standard capillary for water < 700 µS and < 22°dH)
-blue (softened water < 700 µS and < 6 °dH)
-white (hard water < 1200 µS and < 35°dH)
The drain capillary must be selected considering water hardness and conductivity (see
matrix below).
Hardness (°dH)
35
White 30±5%
22
Black 40±5% White 30±5%
6
Blue 55±5% Black 40±5%
100
700
1200
Conductivity
µS
The machine must not be installed with inlet water > 1200 µS or > 35 °dH.
Using a small screwdriver, remove the fixing o-ring from the 4mm fittings.
Push the fitting collet and remove the black capillary.
Put the o-rings on the 4mm pipe and push the tube inside the fittings.
Using a small screwdriver, put the fixing o-ring below the fitting collets.
Item:
1. Capillary pipe 4mm
2. Fitting 6-4mm
3. Fixing o-ring
1
2
1
3
1
2
3

-12-
4. FUNCT ON NG
4.1 FIRST START UP
WARN NG
The first start-up of the machine must be done by the installer.
The installer checks the correct functioning of the machine.
Insert the power plug in a grounded socket 230V 50Hz; the machine is ready to operate.
It is necessary to fill the dishwasher once with the new installed WO-02 and drain the
dishwasher one time completely.
Check any leakage in the hydraulic circuit.
4.2 NORMAL USE
For normal use, the machine must be with power plug always connected.
The machine starts and stops automatically each rinsing cycle.
The machine is leaded by the internal max pressure switch.
WARN NG
Avoid dehydration of the membranes, as it will cause them to malfunction.
4.2.1 Automatic flushing function
In order to avoid bacterial growth on the surface of the membrane, the device will automatically operate
the “flushing” mode every 6 hour. This process consists of the substitution of stagnate water with fresh
water (inside the membrane). During this operation the solenoid valve will open for 2 minute.
4.3 LOW PRESSURE ALARM
If low pressure alarm occurs, machine stops and makes three BEEP. The machine restarts automatically
after 1 minute. The min pressure switch is ignored for 20 seconds at machine start.
If low pressure alarm repeats consecutive, the restart delay increases automatically.
4.4 LEACKAGE ALARM
The machine has two leackage sensors inside. In chase of leackage, the machine makes a long BEEP and
stop the machine. To restart the machine, disconnect and reconnect the power plug.
WARN NG
If leackage alarm repeats, disconnect the power, open the machine and check for
leackages.
Machine opening and leackage inspection can be done by qualified personell only.
4.5 INACTIVITY
WARN NG
It is recommended, each time the machine is not used for a period longer than a week, to
let the water flow for at least 10 minutes before use.
It is recommended to perform machine sanitation each six months or during normal
maintenance operations.
The sanitation must be performed by qualified personell only.

-13-
5. ENDUSER ORD NARY MA NTENANCE
5.1 FILTER REPLACEMENT
ATTENT ON
The filter can be replaced by the end user.
ATTENT ON
Replace the filter each 200 hours of use. The frequency of replacement depends on
average use of the dishwasher (cycles/day) (see table).
Cycles/day
Filter replace freq.
Cycles/day
Filter replace freq.
30
6 months
70
3 months
50
4 months
100
2 months
ATTENZ ONE
Before the WO
-
02, an external prefinte must be ins
talled to guarantee the chlorine
reduction and filtration of raw water.
The manufacturer requie the use of PRO:fine BLU Medium filter.
To replace the filter, follow these steps:
Turn off the water plug valve and turn on the tap on the sink to release pressure from the
system.
Rotate 0° (1/4 spin) towards left the turn-off cartridge, and remove it by pulling it
down.
Remove the protective cap from the new cartridge and record the date of installation of
the new cartridge in the proper space.
Insert the new cartridge without forcing it in any way, making sure to fit the fins in their
proper seats in the head and rotate it 0° towards right until the block, without forcing.
To facilitate the fitting, you can slightly moisten with water or cook
ing oil the seals on
the cartridge.
The removed cap can be used to seal the turn-off cartridge.
ATTENT ON
Use only original parts.

-14-
6. PROFESS ONAL EXTRAORD NARY MA NTENANCE
ATTENT ON
The internal
WO
-
02
ele
ctrical apparatus is fed
by
230
V
olts
electrical
current.
Before opening the machine, make sure the machine is unplugged.
6.1. REQUIRED TRAINING FOR MAINTENANCE PERSONNEL
Maintenance personnel must possess the following qualifications as prescribed in this manual:
•An adequate knowledge of standard EU approved safety procedures
•The required technical knowledge to understand the concepts outlined in this manual.
•Knowledge of basic hygiene
•General familiarity with the device, in addition to a basic knowledge of troubleshooting electrical
and hydraulic problems
6.2. RESPONSIBILITIES OF MAINTENANCE PERSONNEL
ATTENT ON
The overall maintenance plan, described in this chapter, must be rigidly adhered to as
indicated in the above paragraph, in order to maintain the efficient operation of the
device, thereby guaranteeing continued water quality.
The tasks listed in the box below must be performed by qualified technical personnel,
strictly in accordance with the manual, exclusively using approved parts and materials.
Otherwise the guarantee will be null and void. The maintenance performed must
always be documented properly and signed by the technician in the space provided on
the attached maintenance log.
OVERALL NSPECT ONS
TASK
FREQUENCY
Machinery
Visual Inspection to check the
integrity of system controls 12 months or
in chase of permeate water bad smell
(*)
General cleaning
Operation Verification
Machinery
S
anitization
Membranes
Substitution
Upon clogging
Vane pump
Substitution
2000 hours
S
olenoid valve
Substitution
2000 hours
(*) Particular water conditions may require a more frequenty maintenance operations.
ATTENT ON
Use only original parts.
WARN NG
The internal electrical system of the
WO
-
02
is powered by
230
Volts.
Before open the machine, disconnect the power plug.
WARN
NG
DO NOT use corrosive products, acids, steel wool or wire brushes to clean the device.
DO NOT use low or high pressure jets of water when washing the device.
6.3 POWER CORD / POWER PLUG REPLACEMENT
WARN NG
f the supply cord is damaged, it must b
e replaced by the manufacturer or by the
authorized technical personnel in order to avoid a hazard.
The power plug must be
replaced
by the
manufacturer or by the
authorized technical
personell in order to avoid a hazard.

-15-
1
2
3
4
5
6
7
8
9
6.4 CHECK/REPLACEMENT OF OSMOTIC MEMBRANES
A decay of performance rating of 10% per
year
is considered normal wear for osmotic
membranes. Special conditions of entry and/or high consumption may accelerate the
clogging of the membranes.
Close the mixing valve completely.
Supply water and verify scope permeated and conductivity with a reference tool.
If the capacity is reduced more than 50% of the initial conditions and/or the conductivity is
greater than 80µS/cm2, replace the osmotic membrane as follows.
Disconnect the tubes from the fittings of the vessel containing the membrane.
Dismantle the vessel from the machine and unscrew the caps.
Dismantle the membranes clogged and replace with new membranes of the same type.
Clean the vessel on the inside by removing all traces of dirt and scale.
The new membrane must be removed immediately prior to their installation and handling,
using protective gloves sterile.
Before installing the membrane in the vessel, lubricate the o-ring and the upper seal.
Install the vessel with reverse procedure.
Supply water for at least 15 minutes, then check permeated flow and quality.
Item:
1. Membrane vessel 1812
2. Vessel cap
3. Membrane 1812
4. Membrane seal
5. Membrane o-rings
6. Inlet fitting
7. Inlet fitting o-ring
8. Concentrate fitting
. Permeate fitting

-16-
1
23
4
5
6
7
7
8
6.5 PUMP REPLACEMENT
Remove machine drawer.
Disconnect the pipings from the pump.
Unscrew the screw of the clamp and disassemble the pump from the motor.
Install the new pump with fittings previously removed.
If the plastic joint is weared, replace also them.
Mount the new pump with reverse procedure.
At start-up, check pump pressure with a manometer, and adjust the pressure turning the
bypass.
ITEM:
1. Motor
2. Shaft plastic joint
3. Fixing clamp
4. Screw
5. Pump
6. By-pass adjustment screw
7. Male fitting 8x3/8”
8. Plastic flange

-17-
6.6 CLEANING SOLENOID VALVE FILTER / SOLENOID VALVE REPLACEMENT
Close the inlet water valve.
1
2
3
4
4
Remove the pressure in the feed pipe, making the
machine run for 10 seconds.
Turn off the machine and remove the ¾” fitting from
the solenoid valve.
Using pliers, gently pull the solenoid valve filter.
Clean the filter with tap water and/or compressed air.
Item:
1. Solenoid valve
2. Mesh filter
3. Solenoid valve bracket
4. Screws
If solenoid valve is damaged, and every 2000 hours of working time, replace them with a new one.
To remove the solenoid valve:
1. disconnect the internal fittings,
2. disconnect the power cables from the electric terminal board
3. unscrew the two fixing screws
4. remove the solenoid valve and the bracket
5. install the new solenoid valve with reverse procedure.

-18-
6.7 MACHINE SANITATION
Perform the sanitation of the machine at each filter replacement, and at
intervals not
exceeding 6 months.
Perform sanitation also after long not-use periods of the machine.
All sanitation operations must be performed by qualified personnel.
Be careful in the use and dosage of chemicals.
Use protective clothing to the
skin, hands and eyes as shown in the safety data sheet
of chemicals used.
Close the mixing valve and fill a tank with 10 liters of permeate water.
Add hydrogen peroxide to achieve a concentration of 0.2% by weight.
Put 650ml of hydrogen peroxide at 10 volumes per 10 liters of permeated water.
Put 250ml of hydrogen peroxide at 24 volumes per 10 liters of permeated water.
Put 180ml of hydrogen peroxide at 36 volumes per 10 liters of permeated water.
Put 50ml of hydrogen peroxide at 130 volumes per 10 liters of permeated water.
Connect the water pipes of entry, drain and permeated by the machine, at the tank;
make a bridge on the low pressure switch connectors.
Open a bit the mix valve and turn on the machine and let the solution recirculated for at
least 10 minutes.
Wait 10 minutes that the solution acts on the machine.
Reconnect the drain and permeated pipes.
Connect the water pipes of entry, drain and permeated by the machine, at the tank.
Turn on the machine until the sanitation solution is empty; then turn off the machine.
Reconnect the inlet water pipe and open the water valve.
Replace the filter and reconnect the cables of the minimum pressure switch.
Turn on the machine and suplly water for at least 10 minutes until the sanification
solution resids are totally drained.

-1 -
6.8 FUSE REPLACEMENT / ELECTRONIC BOARD REPLACEMENT
If electronic board is malfunctioning, c
heck the tightness of main terminal connector.
Replace the electronic board with another one, following these steps:
-Disconnect the main terminal connector.
-Connect the terminal board to the new electronic board
-Mount the new electronic board with reverse procedure.
11 1 2
3
4
4
5
6
7
Item:
1. Control board bracket screws
2. Control board bracket
3. Control board
4. Control board screws
5. Fuse 5x20 T3.15A
6. Connector
7. Jumper
POSITION:
1 – 230Vac
2 – 230Vac
3 – Not used
4 – Not used
5 – Not used
6 – Not used
7 – EV1
8 – EV1
– Pump
10 – Pump
11 – Not used
12 – Common inputs
13 – Min pressure
14 – Max pressure
15 – Leakage probe
16 – Not used
17 – Conductivity probe
18 – Common inputs
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
Fus
e
Jumper

-20-
1
2
3
4
4
6.9 VERIFICATION OF THE PRESSURE SETTINGS
For proper operation of the machine, check periodically the calibrations.
All the calibrations must be performed by qualified personnel.
6.9.1 Setting max pressure switch
vite regolazione
pressostato
6.9.2 Setting min pressure switch
Item:
1. Low pressure switch
2. Pressure switch screw
3. Connection 1/8”
4. Faston connectors
6.9.3 Check operating pressure
Install a pressure gauge (0-6 bar or similar) between
the permeate outlet and the service.
Screw two turns the calibration nut of the pressure
switch.
Open the knob of the tap, after which it slowly close
the tap until the pressure gauge reaches about 3.5 bar.
Slowly unscrew the calibration
nut
of pressure
switch
until the operation of the machine becomes
discontinuous.
Apply the glue sealant to calibration nut.
Install a pressure gauge (0-6 bar or similar) on inlet
water pipe.
Unscrew two turns the calibration nut of the pressure
switch.
Close slowly inlet water valve, until the pressure gauge
reaches about 0.5 bar.
Slowly screwin the calibration nut of pressure switch
until the low pressure alarm occurs.
Apply the glue sealant to calibration nut.
Install a T fitting and a pressure gauge 0-10 bar (or similar) on the pump outlet line.
The operating pressure must be between 6 and 7 bar.