Electrolux RO400B User manual

Brand: Electrolux

Model: RO400B

Type: User manual

This manual is also suitable for

RO400CV,100V

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TACK för att vi fick förtroendet att leverera Din nya vattenrenare

RO 400, som vi hoppas Du skall få många års bekymmersfri

användning av.

För att undvika missöden och problem är det viktigt att Du läser

igenom ”Säkerhetsinformation”, och att Du noga följer anvisningarna

om ”Installation”. Alla som använder vattenrenaren skall vara väl

förtrogna med användningssättet och säkerhetsdetaljerna.

Spara manualen och låt den följa med vattenrenaren så att den som

använder produkten kan läsa om de olika funktionerna och

säkerhetsinstruktionerna.

För att underlätta för Dig att hitta varningar och viktiga råd har vi lagt

in följande symbol för att fånga Din uppmärksamhet:

Manualens svenska handledning börjar på sidan 4.

RO 400 DIRECT FLOW

THANK YOU for choosing the RO 400 water purifier. We are

confident it will give you many years of trouble-free service.

To prevent mishaps and problems it is important that you should read

the

“Safety information” section, and that you follow the “Installation”

instructions carefully. Everybody using the water purifier should be

familiar with how to operate it and its safety features.

Take care of this manual and make sure that it accompanies the water

purifier, so the user will always have access to the full instructions and

the safety information.

To help you identify warnings and other important information we

have used this symbol to gain your attention:

The English manual starts at page 48.

VIELEN DANK für Ihr Vertrauen in Electrolux. Wir hoffen, daß Ihnen

Ihr neuer Wasserreiniger RO 400 viele Jahre gute Dienste leisten wird.

Bitte beachten Sie auch die Hinweise in den Kapiteln

„Installation” und

“Sicherheitsinformationen”, damit keine Probleme auftauchen. Alle

Benutzer des Wasserreinigers müssen mit seiner Bedienung und seiner

Sicherheitsausstattung vertraut sein.

Bewahren Sie dieses Handbuch gut auf und reichen Sie es bei Umzug

oder Eigentümerwechsel weiter, damit der neue Benutzer sich mit den

Funktionen des Gerätes und den Sicherheitsvorkehrungen vertraut

machen kann.

Warnhinweise und wichtige Informationen sind zum besseren

Erkennen mit dem folgenden Symbol gekennzeichnet:

Die Anweisung auf Deutsch beginnt auf Seite 24.

GENERAL VIEW OF THE APPLIANCE

Filterbehållare, Filterbehälter, Filter container

Bottenplatta, Bodenplatte, Base plate

Filterbehållare, Filterbehälter, Filter container

Kontrollpanel

Kontrolltafel

Control panel

Tillbehörslåda

1 Hållare för avloppsslang*

2 Avloppsslang

3 Slangklämmor, 2 st.

4 Tilloppsslang

5 Filternyckel

6 Informationsdekal

7 Renvattenslang, 2,2 m

8 Slanghållare för luftgap

Supplied with the RO 400:

1 Bracket for reject water hose*

2 Hose for discharge of reject

water to waste pipe

3 Hose clip (x 2)

4 Hose for feed water

5 Filter spanner

6 Self-adhesive information panel

7 Hose for purified water, 2.2 m

8 Hose holder for air-lock

Zubehör

1 Halter für Ablaufschlauch*

2 Ablaufschlauch

3 Schlauchklemmen, 2 Stück

4 Zulaufschlauch

5 Filterschlüssel

6 Informationsschild

7 Reinwasserschlauch, 2,2 m

8 Schlauchhalter für Luftstrecke

GBSE

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YOUR NEW WATER PURIFIER

Unpacking

If the appliance has been damaged during

transportation, you should immediately notify the

company responsible for delivering it. Taking hold of

the rear hand-grip and the front edge of the RO 400,

carefully lift the appliance out. The appliance can be

damaged if it is lifted in any other way. Check the

water purifier for any signs of damage and check that

no accessories are missing. If you do discover any

damage, faults or missing parts, you should report this

to the supplier immediately. Never leave packaging

materials in a place where children may play with it.

Recycling materials

80% of the plastic and rubber components used in

this product and its packaging are identified by

symbols to assist the process of recycling and

disposal. The materials are marked according to

international standards. The cardboard parts of the

packaging are made from recycled paper and should

be deposited at a suitable recycling point.

Optional accessories and consumables

Filter inserts:

Filter (particle filter) Part no. 919 24 00-02

Filter (carbon filter) Part no. 919 24 00-03

Descaling/cleaning agent for

Water Purifiers Part no. 150 72 07-00

Preservative and Antifreeze

liquid for Water Purifiers Part no. 150 72 06-02

Installation pack for

Drinking Water Part no. 919 24 09-04

(Accessories and consumables can be ordered from

your Electrolux dealer. When ordering, please quote

the relevant part number from the list above.)

Water

“Pure water” is water without any harmful, unhealthy

or undesired amounts of organic or inorganic

substances. Water purification means separating out

these particles and substances. In regular purification

certain substances are separated from the water. Reverse

osmosis is a super-filtering process in which even the

smallest particles and amounts of substances can be

separated off. The technique means that the non-

purified water is split into two streams, the purified

water and a concentrate containing the impurities.

Osmosis - reverse osmosis

In the natural world, for example in our bodies,

water is transported by means of osmosis. The cell

walls are a natural osmotic membrane which separate

impurities from pure water. In the reverse osmosis

water purification technique the water is forced

under high pressure through a semi-permeable

membrane. This results in the pure water, the

osmosis water, being separated off from its

impurities. The synthetic membrane is only

permeable to water. Other substances made up of

molecules just a little larger than water molecules can

not penetrate the membrane, but are separated off.

One major advantage with reverse osmosis is that no

chemicals are used or added to the water in the

purification process.

Only reverse osmosis, one of the most efficient water

purification methods, can purify water in a single

step when the water contains:

- cations and anions

• anions such as chlorides, fluorides, nitrates or nitrites

• hardness: calcium and magnesium

• metals: aluminium, iron and manganese

• heavy metals: lead, zinc, cadmium, chrome, mercury

• cations such as sodium and potassium

• asbestos

- organic substances

• diesel oil and benzene

• chlorinated hydrocarbons, e.g. trihalomethanes

• PCBs

• pesticides

• endotoxins

- micro-organisms

• bacteria: coliform bacteria, including fecal coli and

escerichia coli (E.coli)

• viruses

• parasites, e.g. Cryptosporidium and Guardia

Basic facts about reverse osmosis

- Unpacking . . . . . . . . . . . . . . . . . . . . . . . .48

- Recycling materials ..... . . . . . . . . . . . . .48

- Optional accessories and

consumables . . . . . . . . . . . . . . . . . . . . . .48

- Basic facts about reverse osmosis

. . .48

- How to use the RO 400 . . . . . . . . . . . . . .50

- Installation and service . . . . . . . . . . . . .51

- Where to install the RO 400 . . . . . . . . . .52

- Applying the information panel . . . . . .52

- Electrical and plumbing connections .52

- Connecting the reject water hose . . . . .53

- Connecting the feed water hose . . . . . .53

- Connecting up the water purifier . . . . .54

- The flushing procedure . . . . . . . . . . . . .55

- Calibration . . . . . . . . . . . . . . . . . . . . . . .56

- Moving the RO 400 . . . . . . . . . . . . . . . . .57

- Purified water production . . . . . . . . . . .60

- Replacing the filters . . . . . . . . . . . . . . . .61

- Descaling . . . . . . . . . . . . . . . . . . . . . . . .62

- Disinfection . . . . . . . . . . . . . . . . . . . . . . .64

- Cleaning the grid . . . . . . . . . . . . . . . . . .65

- Storage . . . . . . . . . . . . . . . . . . . . . . . . . .65

- Points to remember . . . . . . . . . . . . . . . .67

- Trouble-shooting table . . . . . . . . . . .70-71

- Service and spare parts . . . . . . . . . . . .71

CONTENTS

GENERAL VIEW OF THE APPLIANCE 3

YOUR NEW WATER PURIFIER 48

SAFETY INFORMATION 50-51

CONTENTS 49

INSTALLATION 52-57

USING THE RO 400 58-60

MAINTENANCE 61-66

REGULAR CARE OF THE RO 400 67

TECHNICAL DATA 68-69

IF THE RO 400 STOPS WORKING 70-71

SERVICE AND SPARE PARTS 71

The RO 400 Direct Flow is a very safe appliance, but even so it is important that everyone using

it should be thoroughly familiar with the way it works and its safety features. To prevent mishaps

and problems you should read the “Safety Information” on these pages, and carefully follow the

instructions in the “Installation” section. Take care of this manual and make sure that it

accompanies the water purifier if it is moved or sold.

SAFETY INFORMATION

• Check that the water you intend to purify meets

the requirements listed under “Requirements of

feed water to the RO 400”, in the section

“Technical data”.

• When the RO 400 is brand-new, the purified water

must not be consumed until after the calibration

and flushing procedures have been completed.

• Calibration of the RO 400 should only be carried

out:

- the first time that the water purifier is used

- if the appliance is moved to a different place

(locality) with different water quality

- after the membrane has been replaced

• Since the membrane contains the special products

for storage or descaling, it will have to be cleaned

by following the “Flushing procedure” before the

water from the water purifier may be used.

• The water produced by the appliance should

ideally only be consumed if Purification Level

indicator II or III on the control panel is lit.

• Do not use the purified water if there are any

changes in its taste or smell. Contact your dealer.

• If any leakage occurs, turn off the supply of water

to the appliance immediately and disconnect the

appliance from the electrical supply by removing

the electrical plug from the wall socket, or if

necessary, removing the relevant fuse from the

electrical distribution board (consumer unit) or

switching off the circuit breaker.

• If the RO 400 is not going to be used for more

than four months, or if the water purifier is going

to be disconnected from the water and electricity

supplies for a period of time (several days) then

the RO 400 should be put into storage. This also

provides protection against freezing at

temperatures as low as -30°C. See “Storage”.

• If the temperature in the room where the

RO 400 is stored is likely to fall below 0°C, the

RO 400 must be protected against freezing by

storing the appliance using the “Storage”

procedure.

• Do not attempt to modify or otherwise alter the

RO 400 in any way. Doing so could result in

personal injury and/or damage to property which

would not be covered by any warranty.

• Once every month you should check that the

connections are all watertight. Leaks outside the

appliance cannot be detected by the appliance's

leakage protection system.

• If the water purifier is malfunctioning, it should be

isolated from the electrical supply by removing the

electrical plug from its socket. If this is not

possible, remove the relevant fuse or switch off the

circuit breaker at the electrical distribution board.

• At the end of the appliance's useful life,

disconnect the electrical plug from the power

supply, then cut the electrical lead at the point

where it enters the appliance. Make quite sure

that children will not be able to play with the

severed lead.

How to use the RO 400

• The RO 400 is designed to produce water for appli-

ances which require water of a high level of purity

or of a consistent quality, eg. humidifying systems.

• The appliance needs to remain connected to the

water and electrical supplies so that its automatic

flushing system can function. The appliance will

carry out flushing automatically every 12 hours

(approximately).

• The appliance must not be operated without the

filters being in place (except during descaling,

disinfection or storage). Doing so can cause

serious damage to the membrane.

• If the appliance has not been used for some time,

during which time the membrane has not been

under pressure, the concentration of impurities

tends to equalise on both sides of the membrane.

There could then be a delay of up to 60 sec.

before the RO 400 indicates that the optimum

water purification level has been reached.

• The appliance will flush automatically after water

is drawn from it, every 15 minutes when it is in

operational mode and also whenever the electrical

supply is connected. See “ Drawing off purified

water”.

SAFETY INFORMATION

Installation and service

• Make sure that the relevant regulations for the

installation of electrical and water systems are

followed carefully when installing the RO 400

• The water purifier must be connected to an

earthed electrical supply. We recommend that a

plug-in connection is used since certain

procedures such as replacing filters, preparing the

appliance for storage and moving it if necessary

require the power supply to be disconnected.

• If the appliance is to be permanently wired to the

electrical supply, this work must be carried out by

a qualified electrician. Installation work which has

not been carried out properly can result in

personal injury and/or damage to property which

are not covered by any warranty.

• Any plumbing work required should be carried

out by a qualified plumber. If you do any of the

installation work yourself, you must check the

applicable regulations and comply with them.

• It is important that the water purifier should be

installed in an upright position.

• Check that no hoses or cables get jammed when

moving the water purifier, eg. during installation

or cleaning.

• The reverse osmosis technique very effectively

reduces most substances, which means that the

purified water from the RO 400 has very low

levels of those substances that normally protect

pipes, tanks, valves, etc. You should bare in mind

the risk of corrosion and leakage when choosing

materials for ancillary equipment which is to be

attached to the RO 400.

The RO 400 for drinking water

The water produced by the RO 400 is excellent

drinking water. There is an installation package if the

water purifier is also going to be used for producing

drinking water, which includes a specially-adapted tap

for the RO 400, amongst other things. See

“Optional accessories and consumables”. If the

RO 400 is going to be used in this way, the following

important instructions should be followed:

• Install any taps or such like directly after the water

purifier so that drinking water is produced when

the tap is opened, and is not kept or had any

additives added to it.

• If using materials other than those supplied for the

installation work, use only corrosion-resistant

materials.

• The control panel should be clearly visible from

where the drinking water is drawn off.

• If the supply water is unsuitable you should have

the purified water checked after installation. You

should then have the purified water tested once a

year, or if there is any change in the water taste or

smell, in order to check that the water purifier is

still functioning properly. Do not drink the water

if the result is not satisfactory.

• Only drink the water if the control panel shows

“purification level II or III”.

• Do not use the water from the appliance in

aluminium saucepans etc., on account of the risk

of corrosion, which would also cause increased

levels of aluminium in foods cooked in the

saucepan.

You should read the section entitled “Safety Information” before starting work on the actual

installation of the water purifier.

INSTALLATION

B 1 2 3

AWhere to install the RO 400

This water purifier can be installed in several different ways.

No matter which method you choose, there are certain

points which you should be careful to observe:

• The RO 400 weighs 33 kg. check that the load-bearing

surface is sufficiently sturdy.

• Ensure that the RO 400 is installed in the upright

position, directly onto the load-bearing surface, without

any support or fixings.

• The area where it is installed must have access to a cold

water supply, drainage and an easily-accessible earthed

electrical supply.

• It must be easy to inspect the control panel on the

appliance.

• There must be enough space for the front cover to be

opened and for good access to the filter containers.

• When choosing the site, ensure that there will be

adequate ventilation all around the appliance. There

must be a gap of 20 mm between the sides of the

RO 400 and any adjacent fittings or walls. The

connection points of the RO 400 allow you to route

hoses and cables in any direction out from the

appliance. The dimensions required for the installation

site are 250 x 480 x 490 mm (W x D x H), see Fig. A.

When installing the appliance, make sure that none of

the service connections get crushed or otherwise

damaged.

Applying the information panel

In the box of accessories you will find a sheet of self-

adhesive information panels in several languages. Select the

language required and apply the printed panel in a visible

location, though without it concealing any important

information on the front panel.

Electrical and plumbing connections

The illustration reproduced in Fig. B is also to be found on

the rear of the appliance, and it shows how the various

connections should be made.

The RO 400 is connected to the cold water supply

(temperature range 2 - 30 °C) via a polyethylene feed hose

(3). The feed pipe should have an easily-accessible valve for

shutting off the supply, see Fig.

C on the next page. If the

appliance is being connected to new pipes or to pipes which

have been out of use for some time, the water should be

allowed to run for a while before connecting the hose. This

will prevent the appliance intake filter or the filters from

becoming blocked by sand or rust. The reject water is

INSTALLATION

connected directly to a waste pipe via the reject water hose

(2), while the purified water is led out via the solenoid valve

(1). When in use, the initial volume of water in each

operating cycle is led off to the reject water hose via an

airlock. After this the purified water then flows through the

solenoid valve to some other appliance or item of ancillary

equipment which needs purified water.

The water purifier must be connected to an earthed

electrical supply (230V, 50Hz, 10A). We recommend use of

a plug-in connection to a wall socket, since certain

procedures such as replacing filters, preparing the appliance

for storage and, if necessary, moving it require the power

supply to be disconnected, then reconnected. Make sure

that the plug-in connector is easily accessible in order to

make these manoeuvres easier.

Connecting the reject water hose

Two hoses must be connected to the reject water outlet.

The straight end of the grey reject water hose, see diagram

C (for concentrate during operation and for flushing

water), is connected to the reject water outlet.

The hose can be extended up to 4 metres. The smallest

internal diameter for coping with volumes of up to 10 litres

per minute is 13 mm. The hose must be fed in an arc to a

height of no less than 50 mm and no more than 500 mm

above the roof of the water purifier. Use one of the two

hose clips to secure the hose to a drain, for example, if

required.

One of the hoses (3/8”, 2m polythene hose) for purified

water, see fig. C (for the initial water in each operating

cycle) from the solenoid valve connector which points out

from the water purifier, must be fed to the reject water

outlet.

In order to ensure that micro-organisms (bacteria) from the

reject water outlet do not grow back up the hose to the

water purifier, connection must be via an airlock, see fig.

Locate (screw on) the hose holder directly onto the reject

water outlet and feed the purified water hose through this,

creating an airlock of at least 50 mm between the end of

the hose and the reject water outlet.

Connecting the feed water hose

The straight end of the feed water hose must only be

connected to the cold water connector, see fig.

C. The

water connector must be fitted with a cut-off valve.

Before connection, check that the black washers are in place

where the hose is connected. If the 3/4” hose connection

does not fit, then this can be changed to 1/2” using the

adapter supplied.

Connecting the water purifier

Before moving the RO 400 into its permanent location,

remove the four thread-protection plugs from the water

purifier connectors, and the transit support from under the

filter container (fig.

D). Next connect up the four hoses as

shown in fig.

1. Use a hose clip to secure the reject water hose’s bent end

to the connector in the centre of the water purifier.

2. Screw the bent end of the feed water hose onto the feed

water valve. Check first that the packing is in place in the

valve before screwing the hose tight. Open the cut-off

valve and check that the connection does not leak.

3. Connect the purified water hose (which is led off to the

reject water outlet via an airlock to the solenoid valve on

the purified water side) to the connector which points

outwards. Check that grommets are fitted in both ends

of the hose. Push the hose into bottom position, up to

the mark (about 17 mm), see fig.

4. Connect the purified water hose to the solenoid valve

connector which points inwards (towards the reject

water hose connection). Check that grommets are fitted

in both ends of the hose. Push the hose into bottom

position, up to the mark (about 17 mm), see fig.

Temporarily run the other end to the reject water outlet.

During the subsequent flushing procedure the purified

water will contain the preservative. This water may not be

run off to any other appliance or item of ancillary

equipment until the flushing and calibration procedures

have been carried out.

Put the plug into the wall socket. The machine will start

and run an automatic flushing procedure (for about

30 seconds). This flushing procedure is repeated every time

the machine is switched on. Unplug the applicance from

the mains, wait a minute, and then plug it in again so that

another flushing procedure is run.

The RO 400 must be connected to an earthed

wall socket.

The water may not be consumed until the

flushing procedure has been run and the RO 400

has been calibrated.

After the automatic flushing procedure the machine starts

up and produces water which is fed into the reject water

outlet, first through the ordinary hose fixed in the hose-

holder, and then through the other hose which is

temporarily fixed to the reject water outlet. Check that all

the connections are watertight. If a connection does leak,

unplug the appliance from the mains and take the

appropriate measures. When the appliance has been in

operation for about a week, tighten the connections for the

reject water and feed water hoses again.

INSTALLATION

Leaks outside the actual appliance cannot be

detected by its leakage protection system. Unless

specifically stated otherwise in these instructions,

the valve on the feed water supply pipe should be

left in the open position for the protection system

of the RO 400 to function.

The flushing procedure

You should work through the steps of the flushing

procedure when the RO 400:

• is brand-new and has never been used before

• is being brought back into use after having been stored

• has been cleaned, to wash away the descaling agent

• has been fitted with a new membrane

• the appliance is used after having been disconnected for

a while without any preservative having been used.

No water from the appliance should be consumed

before or during the “Flushing procedure”.

First check:

- that the purified water hose is temporarily connected to

the reject water outlet

- that the water supply to the appliance is turned on

- that there are no leaks at all in the connections between

the domestic water supply and the appliance

- that the reject water and purified water hoses are

connected, with no leaks

- that the filter containers inside the appliance are properly

tightened

1 Unplug the appliance from the mains.

2 Plug the appliance in again. The RO 400 will now

switch automatically to flushing mode.

3 When it stops, unplug from the mains, wait a minute,

then plug it back in so that the appliance will repeat the

flushing cycle.

4 Repeat step 3, so the appliance completes a third

flushing cycle.

... then, if the appliance is brand-new, or if the

membrane has just been replaced:

5a Follow the calibration procedure described below.

... otherwise:

5b Leave the RO 400 to flush clean water into the reject

water outlet after the third automatic flushing

procedure. This happens automatically because there is

no other appliance or item of ancillary equipment

attached. Take the plug out after 10 minutes.

6 Repeat step 5b above.

The RO 400 will now be ready for use!

INSTALLATION

Calibration

The water purifier needs to be calibrated specifically for

your water supply, to ensure the correct purification level.

Calibration should only be carried out when:

• the water purifier is new and has never been used before

• the quality of the water supply has changed for some reason,

such as if you move the appliance to a different area.

• the membrane has just been replaced

The water produced by the appliance during the

calibration procedure must not be consumed!

How to calibrate the water purifier:

1. After the third automatic flushing procedure, which

takes about 30 seconds, the RO 400 stops for a second

and then starts running purified water into the reject

water outlet. Once production has started, press the

calibration button within 10 seconds (see fig.

F) and

hold it in (about 3-5 seconds) until both lights for

“purification level I and II” go on for 1 second and

then go off. Only release the button when the “on/off”

light goes on.

If any of the Purification Level lights I-III stay on (lit),

then one of the steps has been carried out wrongly. See

“Trouble-shooting table” and start once more from

point 4, under “flushing procedure”.

2. Leave the RO 400 producing water for at least

10 minutes without interruption. The lights for

Purification Levels I and II will now come on for 1

second and then go out and the water quality level will

then be displayed by the light for Purification Level III

coming on and staying on, indicating the highest

purification level.

If the lights for Purification Levels I, II and III flash

intermittently, this means that calibration has not been

carried out properly. If so, start again from point 4

under “Flushing procedure” .

3. Unplug the appliance from the mains, wait for a minute

and then plug it back in. Unplug it again when the

automatic flushing procedure has finished.

The RO 400 is now ready to produce purified water.

Connect the hose, which had been temporarily connected

to the reject water outlet, to another appliance or item of

ancillary item of equipment.

INSTALLATION

Moving the RO 400

If you move the water purifier to a different location, you

should bear in mind the following points:

• Shut the valve on the cold water supply pipe.

• Disconnect the electrical plug from the socket.

• Always transport the appliance in its normal upright

position .

• To re-install it, follow the original installation

instructions, including the flushing procedure, in order

to flush out any old water.

• The appliance will only need to be recalibrated if the

quality of the water supply has been changed, or if the

membrane has been replaced.

If the appliance is to be stored without being used

for 4 months or longer, or if it is to be

disconnected from the water and electricity

supplies for several days, it should be filled with

the special storage product (preservative). See the

section “Storage” on page 65.

INSTALLATION

USING THE RO 400

The RO 400 is a water purifier based on the reverse osmosis technique. This means that all

foreign substances are almost entirely removed - more than 99% in most cases. In a great many

industrial applications, there are strict requirements for a consistent and high level of water purity,

in order to guarantee function and to keep maintenance to a minimum.

Pure water also leads to a better finished product.

One area of application is in humidifying systems. Purified water minimises the risk of nozzles

furring up, and problems with calcium dust from the water being spread in the premises

disappear.

In addition, using water without any salt content gives a better humidifying result.

Below is a suggestion for how the complete installation might look. Note that tanks and valves

are not supplied with the water purifier.

feed water

purified water

reject water

purified water to the

reject water outlet

The basic principle

The purified water leaves the RO 400 at (A) and then goes

into the solenoid valve (B). The valve feeds the first volume

of water from each operating cycle into the reject water

outlet via an airlock ( C ), and after a set time it then feeds

the water to an air humidifying system, for example. The

airlock prevents bacteria from the reject water outlet getting

back up the hose into the water purifier. The reject water

from the water purifier runs out through the connector (E).

Cold water is plumbed in at (F). In certain cases this

application needs a pressure tank to be connected up to the

purified water from the RO 400 (G). This means that

operational times are longer when the RO 400 starts up,

which is an advantage. In order to take water samples, or

water for any other purposes, e.g. battery water, a ball valve

USING THE RO 400

(H) is connected from a branch connector on the hose

between the RO 400 and the tank. In order for the

RO 400 to start instead of the tank emptying, a non-return

valve (J) is inserted between the branch connector and the

tank. Fitting a ball valve on the other side of the tank allows

the tank to be drained.

After installation

Once the RO 400 has been installed and calibrated as in the

instructions in “Installation”, the water purifier can be used.

The RO 400 is fitted with an electronic control system

which makes it easier to operate:

• The purified water quality at any one time is shown

continuously on the control panel

“purification level I” non-approved reduction efficiency

“purification level II” approved reduction efficiency

“purification level III” optimal reduction efficiency

• The control panel indicates when it is time to change

the filter.

• When it is time to clean the grid, this is indicated by the

control panel.

Built-in functions which extend the lifetime of the

membrane

• Automatic flushing after every operational cycle for

rinsing out concentrates

• Automatic flushing every 12 hours in order to replace

still water in the purifier

• An automatic 2-minute flushing operation after

15 minutes of operational time. The next 15-minute

cycle is then started.

Other information

Descale the RO 400 according to the table in the section

on “Descaling” or in case of a reduced supply of purified

water.

Purified water production

The RO 400 starts producing purified water when a tap,

valve or a pressure tank releases the pressure in the purified

water hose (i.e. when the tap or valve is opened or when

the pressure in the tank falls) which is linked to the solenoid

valve pointing at the middle of the back of the RO 400.

Only use water from the RO 400 when it shows

purification level II or III. If the RO 400 has not been used

for a while, it can take up to 60 seconds before the correct

water quality is reached.

Adjusting the solenoid valve

The solenoid valve directs the initial volume of water from

each operational cycle, which is not of approved quality.

When the RO 400 is supplied the timer is set to 30 seconds,

which in practise might be too short or too long. Check

that the time has been adjusted correctly by measuring the

time in an operational cycle (once the RO 400 has stood

still for at least 6 hours) from the start until “purification

level II” is indicated on the panel. Adjust the timer as

required by means of the following instructions for use.

The timer is wired in parallel with the water supply valve

and it is activated when the water supply valve is operated

and opened. The timer can be set at four different functions

which are selected by setting rocker switches 4 and 5 to the

right setting. When using the RO 400 switch 4 is up and

switch 5 is down, which means that when the timer is

activated, the solenoid valve switches over straight away and

directs the purified water to the reject water outlet (when it

is at rest the valve switches to another appliance or ancillary

item of equipment).

Adjusting this function only selects the time that the

purified water is directed to the reject water outlet.

There are 8 time periods used for adjusting the time, which

are selected using switches 1, 2 and 3. For applications

using the RO 400 the time period of 1.5 - 30 seconds is

selected, i.e. switches 1 and 2 are down and switch 3 is up.

The factory setting is 30 seconds, which is set by turning

the screw on the left clockwise as far as it will go.

USING THE RO 400

Replacing the filters

It is important to replace the filters since their main

function is to protect the membrane. Check for any signs of

leaks just after you have replaced them and while the

appliance is running.

REPLACING FILTER

It is time to replace filter when the “filter I” indicator

is showing a constant yellow light during operation. First of

all eliminate any other possible faults using the trouble-

shooting table in the section entitled “If the RO 400 stops

working”.

1 Disconnect the electrical plug. Open the front cover (in

front of the two filter containers) using the grip, as

shown in the illustration, see fig.

2 Use the filter spanner to undo the container marked .

Remember that the container will be full of water and

that some water may spill! See fig.

B. Lift out the filter

and discard it.

3 Clean the filter holder using a brush and water. See fig.

4 Put the new filter in place, with the label pointing

upwards. Make sure that the sealing ring is in place in

the grooves of the filter container.

5 Refit and tighten the container using the filter spanner.

Tighten the filter container so that the dot is somewhere

between the two outermost white lines. See fig.

6 Close the front cover and put the plug back in. The water

purifier will now automatically flush out. See fig.

This completes the procedure for replacing filter ,

and the RO 400 is ready for use again.

(If the cause is filter and the water purifier is still

operated without changing the filter, the RO 400 will stop

working when the filter has become more blocked.)

REPLACING FILTER

It is time to replace filter when the “filter II” indicator

is on.

1-6Follow the 6 points in the instructions for replacing

filter , but this time undo filter , which is the

container on the right, and change the filter.

7 The water purifier must be connected to a wall socket

and must be at rest after flushing.

8 Set the built-in timer to zero by holding the “calibrate”

button in for about 5 seconds until the “filter II”

indicator goes out, see fig. F.

This completes the procedure for replacing filter ,

and the RO 400 is ready for use as usual.

(The built-in time meter monitors the efficiency of the carbon

filter, filter , with regard to operational time and ageing.)

The timer can only be zeroed when the front panel shows

“filter II” .

Set the water purifier’s counter to zero after changing filter

as in point 8.

MAINTENANCE

Descaling

In time, the substances which the appliance removes from

your drinking water tend to clog the membrane and will

eventually reduce the flow of pure water from the tap. To

prolong the service life of the membrane, it has to be

descaled periodically.

If you notice that the flow rate from the tap is tending to

decrease, you will need to run the descaling procedure,

below. How often you will need to do this will depend on

your particular water supply, especially on its levels of

calcium and magnesium (“hardness”, see table, right), iron,

manganese and micro-organisms.

You cannot use the water purifier during the descaling

procedure, which lasts about 30 minutes.

The descaling procedure should be run when the flow

of purified water from the RO 400 is reduced.

If you do not notice any change, then run the descaling

procedure according to the table on the right.

You can order the descaling agent from your dealer (see

“Service and spare parts”)

(Even with regular descaling, the maximum flow of purified

water from the appliance will decrease gradually on account

of the normal properties of the membrane. When you

notice that the flow is about half of what it was when the

membrane was new, contact your dealer to have the

membrane replaced.)

The descaling product must be kept out of the

reach of children.

Wash your hands after use.

1 Mix 200 grams (roughly 250 ml) of the descaling agent

with 2 litres lukewarm water in a bucket. Stir until the

powder has dissolved, see Fig.

2 Unplug the appliance from the mains. Remove filter

and filter from the filter holders as in “replacing the

filter”, points 2-5, and screw the empty holders back on

again. (Do not throw away the filters as they can be re-

used), see fig.

3 Allow the purified water from the RO 400 to be flushed

away down the reject water outlet for the first

10 minutes of the operating cycle by loosening the

purified water hose from any other appliance or item of

ancillary equipment, and running it into the reject water

outlet via the airlock, see fig.

C on the next page.

Water containing the descaling agent will be

produced. This water may not be fed into any

ancillary equipment or any other appliance.

MAINTENANCE

FREQUENCY OF DESCALING

Calcium Ca

magnesium Mg

mg/l

- 50

50 - 100

100 - 140

Frequency of

descaling

every 12 months

every 6 months

every 3 months

Hardness

°d

- 7

- 14

- 20

MAINTENANCE

4 Close the shut-off valve at the water connection. Undo

the feed hose from the feed water connection and the

reject water hose from the reject water outlet, see fig

5 Put the ends of both the reject water and feed water

hoses in the bucket. Make sure they are both below the

surface throughout the descaling procedure, see fig.

6 Plug the appliance back in and leave the water purifier

to flush out automatically. Unplug it again after

approximately 30 seconds. (During the flushing

procedure the RO 400 sucks the solution up from the

bucket. The volume in the bucket is reduced by the

same volume of liquid as was in the filter holders, but it

does not entirely disappear).

7 Wait 1 minute then repeat step 6.

8 This time leave the agent to work for 2 minutes, then

repeat step 6 again.

9 Wait for 2 minutes and then repeat step 6.

10 Reconnect the feed water hose to the water connection

and the reject water hose to the reject water outlet, see

fig.

11 Plug the appliance back in and leave the water purifier

to go through a complete automatic flushing procedure.

Leave the RO 400 running purified water into the reject

water outlet for about 10 minutes and then unplug the

appliance.

12 Wait for one minute, then plug the appliance back in and

leave the water purifier to complete a full automatic flush

cycle. Leave the RO 400 to run pourified water into the

reject water outlet for about 10 minutes and then unplug

the appliance.

Put the equipment back as it was and reconnect the purified

water hose to another appliance or item of ancillary

equipment.

The descaling procedure is now complete. The RO 400

is ready for normal use.

Disinfection

If the appliance has been disconnected from the water and

electricity supplies for a period of time (several days), there

may be a build-up of micro-organisms on the membrane

and the water might develop a certain odour. If this is the

case, it is appropriate to perform disinfection and replace

the filter.

The disinfectant, which contains the active ingredient

sodium hypochlorite, can be bought from supermarkets or

from the chemist. The disinfectant must be odourless.

1 Unplug the appliance.

2 Set up the RO 400 so that the purified water from the

appliance can be flushed into the reject water outlet for

the first 10 minutes of the operating cycle, for example

by undoing the purified water hose from another

appliance or item of ancillary equipment and feeding it

into the reject water outlet via an airlock. Connect a

manual valve onto the purified water hose to control the

RO 400.

Water will be produced which contains the

disinfectant. This water must not be fed into any

other appliance or item of ancillary equipment.

3 Plug the RO 400 back in at the mains so that it can run

an automatic flushing procedure. Stop the RO 400 by

shutting off the purified water supply using the manual

valve on the purified water hose.

4 Undo filter container as described in “Replacing the

filters”, steps 2-5, and remove filter . (Filter must

be discarded.)

5 Fill the container three-quarters full of lukewarm water,

add 25 ml of the disinfectant at a concentration of 3.5%

and stir. (If the concentration is not 3.5%, adjust the

amount of the disinfectant according to the

concentration, see fig.

6 Screw the container (containing the solution) back onto

the appliance.

7 Open the manual valve to start the RO 400 and leave it

to produce purified water for 45 seconds.

Unplug the appliance after 45 seconds, without first

shutting off the valve.

9 Leave the water purifier stationary and allow the agent

to work for 30 minutes. During this time, install a new

filter in the filter holder and a new filter in

the filter holder , as described in steps 2-7 of

“Replacing the filters”. See fig.

10 Turn off the tap, plug the appliance in and leave it to

flush out automatically. Perform a complete flushing

procedure as described in “Flushing”.

MAINTENANCE

11 If there is any odour left from the cleaning agent, open

the tap and allow it to produce water until the odour

has disappeared.

12 Reassemble the equipment and reconnect the purified

water hose to another appliance or item of ancillary

equipment.

The disinfection procedure is now complete and the

RO 400 is ready for regular use.

Cleaning the grid

The grid (a coarse filter) filters out large particles and is

located in the connection for the feed water on the

appliance. If the “filter I” indicator light shows that filter

is blocked or that the intake pressure is too low, the reason

may be that the grid is clogged.

1 Disconnect the appliance from the electrical supply.

2 Close the valve on the water supply pipe.

3 Undo the feed water hose connector on the back of the

appliance.

4 Using pliers or similar, grip and remove the grid, as

shown in fig.

5 Clean and rinse out the grid before putting it back

inside the connector (with the tongue for the pliers

facing outwards), see fig.

6 Reconnect the feed water hose to the appliance.

7 Open the valve on the cold water supply pipe and check

that there are no leaks.

8 Plug the appliance back in at the mains and it will flush

automatically.

Storage

If the RO 400 is not going to be used for a period of more

than four months, or if it is going to be disconnected from

the water and electricity mains supplies for quite a long time

(several days) it needs to be filled with a preserving agent.

The preservative can be ordered from your dealer (see

“Service and spare parts”).

This product must be kept out of the reach of

children.

Wash your hands after use!

1 Unplug the appliance from the mains.

2 Mix 2 litres of the preservative agent and 4 litres of

water in a bucket, see fig.

3 Undo both filter containers as described in “Replacing

the filters”, steps 3-6. Remove the two filter inserts and

discard them (should not be kept for re-use). Empty the

water from the containers, see fig.

I overleaf.

4 Put the empty filter containers back in their normal places

and tighten them. Make sure that each sealing ring is in

place in the groove on the top edge of each container.

MAINTENANCE

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Electrolux RO400B User manual

Brand: Electrolux

Model: RO400B

Type: User manual

This manual is also suitable for

RO400CV,100V

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