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CWG420D
User Manual
35 pgs2.86 Mb0

Smeg CWG420D, CWG420DR, CWG420SD, CWG430D, CWG430DE User Manual

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Page 1

PROFESSIONAL DISHWASHER

EN

Page 2

CONTENTS

1 PRI ECAUTIONS FOR SAFETY AND USE
2 TEC CHNICAL DATA6
3 INS TALLATION AND POSITIONING8
4 INS TRUCTIONS FOR TECHNICAL STAFF9
4.1 Plumbing hookup9
4.2 Electrical connection 10
5 FIR ST START-UP 12
5.1
settir 		Rinse aid dispensing setting (on models with diaphragm pump with manual ng only)
5.2 Using the water softener (on models with this feature only)
6 SET - -UP
6.1 Dishwasher parameter modification procedure:
6.2 Quit "SET-UP "menu
6.3 Rinsing temperature setup
6.4 Washing temperature setup
6.5 Detergent dispensing setup (if featured) 18
6.6 Rinse aid dispensing setup (if featured) 18
6.7 Autostart function 19
6.8 Regeneration frequency setup (models with softener) 19
6.9 tStP (minimum rinsing temperature) function 19
6.10 Rinse aid pump (display and if required reset during maintenance) (if featured)
20
6.11 Detergent pump (display and if required reset during maintenance) (if featured)
20
6.12 Energy consumption – Display and reset if required
6.13 Service setting (for After-Sales Service only) 20
6.14
circui 		Starting the peristaltic pumps – rapid filling of detergent and rinse aid delivery
it.(if featured)
Page 3

•smeg

7 7 MALFUNCTIONS SHOWN ON THE DISPLAY (FOR THE TECHNICIAN)
8 INS STRUCTIONS FOR THE USER 23
8. 1 Control panel 23
8. 2 Before washing 24
8. 3 First use each day (tank and boiler empty) 24
8. 4 Changing the Program 26
9 CH OOSING THE PROGRAM 26
10 S UPPLEMENTARY FUNCTIONS 27
1( ).1 Selecting the crys"glassware" function (available in P1-P2) 27
1( ).2 Selecting the "extra rinse" function (available in P1-P2-P3-P4) 27
1( ).3 Selecting the "sanitisation" function (only available in P3) 28
11 Ν AINTENANCE AND CLEANING 30
11 1.1 Daily cleaning 30
11 1.2 Routine inspection of the spray arms 31
11 1.3 Lengthy periods out of use 31
12 Т ROUBLESHOOTING 32
13 Ν ALFUNCTIONS SHOWN ON THE DISPLAY (FOR THE USER) 33

SMEG thanks you for choosing one of its products.

Page 4

Read all the instructions in this manual carefully to become familiar with the right conditions for the proper use of your dishwasher.

TECHNICAL INSTRUCTIONS

These are intended for the qualified staff who are to install, commission and test the appliance and carry out any servicing and repairs.

INSTRUCTIONS FOR THE USER

These provide recommendations for use, a description of the controls and the correct procedures for cleaning and maintaining the dishwasher.

1 PRECAUTIONS FOR SAFETY AND USE

THIS MANUAL IS AN INTEGRAL PART OF THE DISHWASHER AND MUST ALWAYS BE
KEPT INTACT TOGETHER WITH THE APPLIANCE.
AII POSITIONING, HOOKUP, COMMISSIONING, TROUBLESHOOTING AND REPLACING THE
POWER CABLE MUST ALWAYS BE CARRIED OUT BY QUALIFIED STAFF .
AII THE APPLIANCE MUST BE GROUNDED AS REQUIRED BY ELECTRICAL EQUIPMENT
SAFETY STANDARDS.

THE DISHWASHER IS INTENDED FOR PROFESSIONAL USE ONLY AND MUST ONLY BE USED BY AUTHORISED STAFF. IT IS DESIGNED TO WASH TABLEWARE (PLATES, CUPS, BOWLS, OVEN DISHES AND CUTLERY) AND SIMILAR ITEMS IN THE RESTAURANT AND INSTITUTIONAL CATERING SECTOR, AND COMPLIES WITH THE INTERNATIONAL STANDARDS ON ELECTRICAL AND MECHANICAL SAFETY (CEI-EN-IEC 60335-2-58/61770) AND ELECTROMAGNETIC COMPATIBILITY (CEI-IEC-EN 55014-1/-2, 61000-3;4, 50366).

THE MANUFACTURER DECLINES ALL RESPONSIBILITY FOR INJURY OR DAMAGE CAUSED BY FAILURE TO COMPLY WITH THE INSTRUCTIONS IN THE MANUAL, BY INCORRECT USE , BY TAMPERING WITH EVEN JUST ONE PART OF THE APPLIANCE AND BY THE USE OF NON-ORIGINAL SPARE PARTS .

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THIS APPLIANCE IS TAGGED UNDER EUROPEAN DIRECTIVE 2002/96/EC ON WASTE ELECTRICAL AND ELECTRONIC EQUIPMENT (WEE).

BY MAKING SURE THAT THIS PRODUCT IS DISPOSED OF CORRECTLY THE USER HELPS TO PREVENT POTENTIAL DETRIMENTAL EFFECTS ON HEALTH AND THE ENVIRONMENT.

WHEN DECOMMISSIONING THE APPLIANCE COMPLY WITH THE LOCAL WASTE DISPOSAL REGULATIONS.

FOR FURTHER INFORMATION ON THE TREATMENT, RECOVERY AND RECYCLING OF THIS PRODUCT, CONTACT THE COMPETENT LOCAL OFFICE, THE DOMESTIC WASTE COLLECTION SERVICE, OR THE SHOP WHERE THE PRODUCT WAS PURCHASED.

X THE SYMBOL OF THE RUBBISH BIN WITH A BAR ACROSS IT ON THE PRODUCT OR IN THE TECHNICAL DOCUMENTATION INDICATES THAT THIS PRODUCT MUST NOT BE TREATED AS ORDINARY DOMESTIC WASTE BUT MUST BE CONSIGNED TO THE SPECIAL COLLECTION POINT FOR THE RECYCLING OF ELECTRICAL AND ELECTRONIC EQUIPMENT.
⚠ NEVER PLACE SOLVENTS SUCH AS ALCOHOL OR TURPENTINE , WHICH MIGHT CAUSE AN EXPLOSION, INSIDE THE APPLIANCE. NEVER LOAD DISHES DIRTY WITH ASH, WAX OR PAINTS.
⚠ NEVER USE THE DISHWASHER OR ANY PART OF IT AS A LADDER, SUPPORT OR STAND
FOR PEOPLE, ANIMALS OR ANY OBJECT.
LEANING OR SITTING ON THE OPEN DOOR OF THE DISHWASHER MIGHT CAUSE IT TO TIP
OVER, PUTTING PEOPLE IN DANGER.
NEVER LEAVE THE DISHWASHER DOOR OPEN SINCE PEOPLE MIGHT TRIP OVER IT.
⚠ DO NOT DRINK ANY WATER LEFT IN THE DISHES OR DISHWASHER AT THE END OF THE WASHING PROGRAM.
THE APPLIANCE IS NOT SUITABLE FOR USE BY JUVENILES OR PERSONS WITH REDUCED
PHYSICAL, SENSORIAL OR MENTAL CAPACITIES, OR THOSE WITHOUT THE NECESSARY
KNOWLEDGE AND EXPERIENCE. SUCH PERSONS MAY ONLY USE THE APPLIANCE UNDER
THE SUPERVISION OF A PERSON RESPONSIBLE FOR THEIR SAFETY.
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- CW 420/430

•smeg

2 TECHNICAL DATA

Supply voltage V 400V 3N ~
Convertible to single-phase version V 230V 1N ~
Frequency Hz 50
Max. power absorption at 400V 3N ~(3 branches of heating element) kW 4.8
Max. power absorption at 230V 1N ~(2 branches of heating element) kW 3.3
Max. power absorption at 230V 1N ~(1 branch of heating element) kW 1.8
Boiler heating element power at 400V 3N ~(3 branches of heating element) kW 4.5
Boiler heating element power at 230V 1N ~(1 branch of heating element) kW 1.5
Tank heating element power kW 0.8
Water intake pressure kPa (bar) 100-600 (1 ÷ 6)
Water intake temperature °C 15°C – 60°C
Water hardness (on models with softener <60°f) °f <15°f
Rinse cycle water consumption Ι 2.3
Boiler capacity Ι 4
Tank capacity Ι 7
Durée cycle standard avec alimentation d'eau à 50°C S 90/150/240
Noise level dB(A) < 60
Degree of protection IPX 4
Net weight Kg 44/48
Power supply cable type ⊲ HAR ► H07RN-F
400V 3N ~ 230V 1N ~
С S С S
1.8kW 3X2.5 16° 3P+N
3.3kW 3X2.5 16° 3P+N
4.8kW 5x2.5 16° 3P+N

C = Power Supply Cable S = master switch

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Page 8

KEY TO LETTERS USED IN DIAGRAM
R LOWER BACK PANEL
С FILLER HOSE
Q ♦ EARTH TERMINAL Q P E S C
Е ELECTRICITY SUPPLY CABLE
Ρ PERISTALTIC HOSES R
S DRAIN HOSE

3 INSTALLATION AND POSITIONING

INSTALLATION and POSITIONING

Bring the dishwasher to the installation site, remove the packaging and check the appliance and components for damage; any damage found must be reported to the transporter in writing.

The packaging components (plastic bags, expanded polystyrene, nails, etc.) must not be left within reach of children and pets since they are potentially dangerous. All packaging materials used are environment-friendly. They can be kept without constituting any hazard, or may be disposed of at a specialist waste disposal centre. The plastic components suitable for recycling are marked as follows: PE polyethylene: external packaging film, bag containing the instructions, protective bags. PP polypropylene: straps. PS expanded polystyrene: corner guards, top of packaging. Wooden and cardboard components can be disposed of in accordance with the relevant regulations. When the product is decommissioned it must not be dumped in the environment; it must be disposed of in accordance with the relevant regulations. All metal parts are in stainless steel and can be removed. The plastic parts are marked with the symbol identifying the material used and may be disposed of in accordance with the relevant regulations. When the relevant regulations when the product is decommissioned it must not be dumped in the relevant regulations. All metal parts are marked with the symbol identifying the material used and may be disposed of in accordance with the relevant regulations. All metal parts are in stainless steel and can be removed. The plastic parts are marked with the symbol identifying the material used and may be disposed of in accordance with the relevant regulations. All metal parts are in stainless steel and can be removed. The plastic parts are marked with the symbol identifying the material used and may be disposed of in accordance with the relevant regulations. All metal parts are in stainless steel and can be removed. The plastic parts are marked with the symbol identifying the material used.

8

EN

Page 9

Caution: the indoor system and premises in which equipment for institutions is installed must comply with the relevant regulations.

The manufacturer declines all liability for direct or indirect injury or damage deriving from failure to comply with these regulations.

Before installation, check that there are no objects or materials in the vicinity which may be damaged by steam or splashes of washing solution, or that any such items are suitably protected. Place the dishwasher in the chosen point and remove the protective film.

Level the dishwasher (with the aid of a spirit level) on its adjustable feet to ensure that it is stable; all other mounting solutions must be approved by the manufacturer.

4 INSTRUCTIONS FOR TECHNICAL STAFF

4.1 Plumbing hookup

/ater supply and drain hookup
pipelines and electricity supply cable lead out of the bottom right - 69
er of the appliance. Connect the water intake hose to a connecto r ar
as threaded fitting, fitting the filter A provided (in models with 1
the filter and ring-nut form a single unit).
ection to the water mains must only be made with new hoses; the 🖻 ا
or worn hoses is not permitted. H H -

The dynamic water supply pressure must be between 1 and 6 bar; if it is higher, installation of a pressure reducer is necessary.

It is essential to fit a main stop tap on the water intake deliver pipeline; the tap must be accessible after installation of the appliance, so do not install it behind the dishwasher. The stated cycle duration applies to appliances supplied with hot water >50°C<60°C . If the dishwasher is supplied with cold water, the cycle duration might increase depending on the intake water temperature. The dishwasher is fitted with a drain pump and can operate with drain connections on the floor or wall.

Refer to the connection diagram for the maximum permitted height of wall drains – (see TECHNICAL DATA)

Caution: make sure that the intake and drain hoses are not bent, constricted or crushed after installation.

When installing the drain hose to a siphon with valve, the maximum height of the drain outlet is reduced to 600 mm.

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4.2 Electrical connection

YII The dishwasher and any additional equipment must be connected to the electrical system by authorised, skilled staff, in accordance with the relevant regulations; also comply with the technical instructions for the connection.
The total rated power is stated on the appliance's technical data plate.
The electrical protection devices fitted for the dishwasher must serve this appliance only.
The user must have a master switch and a differential safety breaker, with rating suitable for the appliance's characteristics, installed on the electricity supply line in accordance with the relevant regulations.
These switches must be installed close to the dishwasher, be easily accessible after installation, and provide complete disconnection from the electrical mains in overvoltage class III conditions.
⚠ Warning !!!
The dishwasher is always powered up unless the master switch is turned off.
⚠ Connect the appliance to the user's earth system. The vertical for the connection is in the bottom right-hand corner of the appliance.
The earth wire (PE) is yellow-green in colour, the neutral wire (N) is blue and the live wires (L1, L2, L3) are black, grey and brown.
In the event of single-phase connection (230V-1N~), the connection to the electrical mains must be made using a cable with plug compliant with the relevant regulations.
⚠ THE POWER SUPPLY CABLE MUST BE REPLACED BY THE MANUFACTURER OR AN AUTHORISED SERVICE CENTRE TO PREVENT ALL RISKS.

EN

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Figure 1 – Appliance electrical system diagram

- CW 420/430

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5 FIRST START-LIP

First start-up

The electrical protection system must undergo a functional test before the appliance is put into operation.

The appliance must be installed and/or inspected by qualified staff, who will start it up for the first time and provide the relevant operating instructions.

Preparing for use (important)

The rinse aid dispenser is fitted on all models, the detergent dispenser only on some.

If both dispensers are present put the external detergent and rinse aid containers in place and insert the respective intake hoses on the rear of the appliance into them.

Red hose: detergent

blue hose: rinse aid

Before inserting the hoses into the containers, fit the weights (needed to ensure that they always draw in liquid from the bottoms of the containers) and the filters onto their ends as shown. If the detergent dispenser is not factory-fitted, it can be retrofitted by ordering the relative kit.

As an alternative an external dispenser can be fitted, making the electrical connection by means of an H05 RN-F 2x0.5 mm electrical cable, which can be laid along the route shown in the TECHNICAL DATA diagram and connected as shown in the wiring diagram supplied with the dishwasher. The dispenser must operate on 230V/50 Hz with maximum power absorption of 15 W . Connect to the detergent dispenser outside the dishwasher using the red hose mentioned above.

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5.1 Rinse aid dispensing setting (on models with diaphragm pump with manual setting only)

Note: If peristaltic rinse aid pump is installed see point 6.6

RB Rinse aid dispensing regulator screw
RV Inspection panel removal screw

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5.2 Using the water softener (on models with this feature only)

The quantity of lime in the water (which indicates its hardness) causes whitish marks on dry dishes and dishes also tend to lose their shine over time. The dishwasher is equipped with an automatic water softener which removes the substances that cause hardness from the water with the aid of regenerating salt.

The first time the dishwasher is used, a litre of water must be poured into the tank with the salt.

Whenever the tank is filled, always take care to ensure that the cap is firmly closed.

The mixture of water and detergent must not get into the salt tank, as this would impair operation of the regeneration system.

In this case warranty cover will be forfeited.

Whenever the type of detergent or rinse aid is changed, it is ABSOLUTELY ESSENTIAL to flush out the peristaltic pumps by placing the external intake pipes in water for a few cycles.

Always use only products specifically recommended for use in a dishwasher.

Failure to comply with this recommendation leads to forfeiture of the warranty entitlement on the appliance's water system.

The internal pipes of the detergent and rinse aid pumps should be replaced by the After-Sales Service every 12 months or 15,000 wash cycles and operation of the diaphragm can be disposed of in accordance with the relevant regulationsrinse aid pump should be checked.

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6 SET-UP

Set-up During first start-up, the functions/parameters listed below must be set or adjusted:

6.1 Dishwasher parameter modification procedure:

Only accessible after filling is complete or with the door open.

Indicator lights showing: Ooff; Ogreen; Oorange; 🗘 flashing.

Access "programming mode" by pressing the ©button for a few seconds with the appliance on with the door open and the tank empty (after the filling and heating phases). The display shows UnLo 1:58; when the beep sounds, release the button and press it again at once. Keep pressing the button again to scroll through all the modifiable parameters in the following order:

EN

Rinsing temperature (boiler temperature)
Washing temperature (tank temperature)

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0

Quantity of rinse aid dispensed (if featured), the number indicates the seconds of peristaltic pump operation)
Start-on/start-off
Set at "on" to start the cycle when the door is closed.
Set at "off" for cycle start after confirmation with the start
button

tStP on/off "on" = minimum rinsing temperature as set, regardless of intake water temperature. If the intake water is not hot; the cycle duration might be a few seconds longer than the nominal timing, "off" = the

minimum rinsing temperature might be a few degrees lower than the setting

Detergent pump total operating minutes display. (if featured)
This value can be reset during pump maintenance - see below.

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Energy consumption (kW) display The Pc option indicates the total kW consumed since installation of the dishwasher or since the latest reset.

Display of the number of cycles performed When scrolling through the appliance parameters, the "tc 888888" item will also appear; this is the count of the total cycles performed by the dishwasher since installation.

This parameter cannot be modified or reset unless the software is reprogrammed.

This submenu and the relative functions can only be accessed with the aid of a password available on SmegTech and only by technical staff.

□ ○°
R S

6.2 Quit "SET-UP" menu

Wait more than 10 seconds without pressing any button and the appliance quits this menu automatically,

or press the on/off 🕲 button to exit.

Indicator lights showing: O off; O green; O orange; 🗘 flashing.

Caution: the tank and boiler temperatures shown on the display may be differ from the actual temperatures by a few degrees, especially in transient phases (just after the FILL is completed, just after the end of the cycle, etc.) due to the inertia of the measurement probe.

6.3 Rinsing temperature setup

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6.4 Washing temperature setup

Modify the value of the parameter by pressing ©.
(Default value: 62 °C)
Min. 52°C – max. 62°C

Indicator lights showing: ○off; ◎green; ⊘orange; ♀ flashing.

6.5 Detergent dispensing setup (if featured)

DETER RGENT
Modify the value of the parameter by pressing ③ Delivery time
(s) 		Delivery
quantity (c.c.)
0 0.0
( ) 2 0.8
4 1.7
6 2.5
* default value (factory preset) 8* 3.3
10 4.2
12 5.0
14 5.8
16 6.7
18 7.5
20 8.3

6.6 Rinse aid dispensing setup (if featured)

RINS E AID
Modify the value of the parameter by pressing ③. Delivery time
(s) 		Delivery
quantity (c.c.)
0 0,0
6 0.7
12 1.3
* default value (factory preset) 18 2.0
24 2.7
30* 3.3
36 4.0
42 4.7
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6.7 Autostart function

Set at "on" to start the cycle when the door is closed.

Set at "off" for cycle start after confirmation with the start button

6.8 Regeneration frequency setup (models with softener)

  • (Default value: H03 ; modify the parameter to suit the mains water hardness.
  • At first use, the salt tank has to be filled. It is subsequently sufficient simply to fill up with regenerating salt when necessary.

Modify the Hardness
(°d German
degrees) 		Hardness (°f
French
degrees) 		Setting
level
value of the Regeneratio Regeneration H00
поп 011
pressing©. 8.5 15 H01
11 20 H02
17 30 H03
22.5 40 H04
28 50 H05
Regeneration cycle duration: 12 minutes 5 33.5 60 H06

With values over 60°dF an external water treatment device must be used and the regeneration frequency must be set on H00 .

6.9 tStP (minimum rinsing temperature) function

Modify the parameter (ON/OFF) by pressing ③.

Set at "on" for minimum rinsing temperature as set; set at "off" for rinsing regardless of boiler temperature.

If the parameter is set as "off" and hot intake water is not used, the minimum rinsing temperature might be a few degrees lower than the setting.

Page 20

If the termostop device is set "off" the rinsing is no longer monitored and the user is responsible for ensuring that the minimum correct T° are maintained for the tank and boiler. It is particularly important to check the intake water temperature. Also refer to the insufficient washing/drying / foam in tank point of the "troubleshooting" section: restore T Stop ON and/or connect the appliance to a hot water supply

6.10 Rinse aid pump (display and if required reset during maintenance) (if featured)

6.11 Detergent pump (display and if required reset during maintenance) (if featured)

6.12 Energy consumption – Display and reset if required

6.13 Service setting (for After-Sales Service only)

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sufficient.

6.14 Starting the peristaltic pumps – rapid filling of detergent and rinse aid

delivery circuit. (if featured)

Perform after the parameter modification procedure explained in the previous point.

Indicator lights showing: Ooff; Ogreen; Oorange; 🗘 flashing.

With the dishwasher powered up, access "programming mode" by pressing the on/off (i) button for a few seconds; at the "beep", release the button and press it again quickly within 0.5 seconds . The peristaltic pump operates until the same button is pressed again; the detergent or rinse aid symbol is lit up as long as the pump is in operation; about 2 minutes is

EN

7 MALFUNCTIONS SHOWN ON THE DISPLAY (FOR THE TECHNICIAN)

The dishwasher is able to identify a number of malfunctions and show them on the display. If the problem persists after the dishwasher has been switched off and back on, proceed as described below:

Err04 Tank temperature probe malfunction Tank temperature probe disconnected or not working.
Err05 Tank water filling malfunction The tank does not fill within the allowed time: check
water intake tap, dynamic pressure in intake system,
cleaning of water intake filter, possible damage to
water intake hose or cleaning of rinsing nozzles.
If the problem persists during FILL:
- tank pressure switch has failed (continuous empty
reading: check whether tank safety pressure switch
is tripped)
- leak from pipe connected to air trap
If the problem occurs during work cycle
- filler hose bleeder valve fouled: tank empties
completely at end of a wash cycle due to siphon
effect.
Err06 Water pump-out malfunction Inspect the filters for dirt and check that the drain
hose is not blocked, bent or crushed.
Check that the drain pump is not blocked by dirt by
removing the insert on the sump (from inside the
tank).
Page 22
A.
B.
T. 		If it persists, check in this order:
- with tank empty: constant "tank full" signal: tank
pressure switch faulty or leak from connections of air
trap connection pipe (water entering pipe)
- with tank full: drain pump failure
Err09 Too much water in tank With tank full:
see above (water pump-out malfunction)
With tank empty: constant "tank full" signal: safety
pressure switch faulty or leak from connections of air
trap connection pipe (water entering pipe)
Err23 Boiler does not heat up as expected The problem might occur because water is
continually entering the tank (the causes are as for
Err5 – see above)
If it persists, check in this order:
- damaged boiler heating element
- contactor failure,
- boiler safety thermostat failure,
- boiler temperature probe faulty or incorrectly
positioned
- motherboard relay failure,
Important: if the boiler heating element is damaged,
this might be due to operation with no water in the
boiler - the pressure switch is indicating full even with
the boiler empty: check and if necessary replace the
boiler air trap and/or the relative pressure switch:
the problem is generally preceded by "boiler
overheating E28"
Err24 Boiler temperature probe malfunction boiler temperature probe disconnected or not working
Err25 Boiler water filling malfunction The boiler does not fill within the allowed time: check
water intake tap, dynamic pressure in intake system,
cleaning of water intake filter, possible damage to
water intake hose
Or check in this order:
- boiler pressure switch has failed (continuous empty
reading)
- pipe leaking/disconnected (water entering pipe)
Err26 Boiler emptying malfunction
  • check that rinsing spray arm nozzles are clean
  • boiler pressure switch has failed (continuous full reading)
  • pipe leaking/disconnected (water entering pipe)
  • rinsing pump not working
Err27 Boiler emptying malfunction – with Boiler pressure switch has failed (continuous full
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tank full reading)
Err28 Boiler heating malfunction
(overheating)
  • First check:
    • boiler pressure switch has failed (continuous full reading)
    • pipe leaking/disconnected: water entering pipe connected to air trap, pressure switch continues to give full reading even with boiler empty, heating element operating dry
    • Or:
      • circuit board relay failure, or
      • contactor failure

8 INSTRUCTIONS FOR THE USER

8.1 Control panel

٢ On-off button
١ Program selection button
Σ Start CONFIRM/PAUSE button
( ` ; Total emptying button (tank and boiler)
٢ Additional function selection button
0 L1 Mains power on light
0 L2 Intake/standby cycle in progress light (red/green)
0 L3 Pump-out in progress light
* No rinse-aid symbol (if a system for monitoring outside the dishwasher is provided)
Ū Tank heating element on symbol
U No salt symbol (if softener is fitted)
Г Boiler element on symbol
G No detergent symbol (if a system for monitoring outside the dishwasher is provided)
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8.2 Before washing

Use only detergents and rinse aids for industrial dishwashers. Do not use detergents intended for hand washing.

We recommend the use of Smeg products, specially developed for this dishwasher.

When topping up the tanks, take care not to swap the products; this might damage the dishwasher and cause malfunctions.

Do not mix different detergents; this would damage the dispenser device.

Industrial dishwasher detergents may cause serious irritation. Comply carefully with the instructions provided by the detergent producer on the pack.

Turn on the
mains water
tap (user) 		The level of
detergent and
rinse aid in the
containers. 		Check:
That there is
regenerating salt
in the relative
container (if
fitted). 		That the filters are in
place, the spray arms
rotate, and there are
no foreign bodies in
the dishwasher. 		Switch on the
master switch
(user): the word
"OFF" appears on
the display.
SALE
SALT
SEL
SALZ
SAL 		ON-OFF

8.3 First use each day (tank and boiler empty)

Indicator lights showing: ○off; ◎green; ⊘orange; ♀ flashing.

Display shows Actions and what happens
With the door closed:
Press (1) and hold it down, with word FILL appears.
the dishwasher fills the tank after the water in the boiler
has heated up; light L2 shows orange and the boiler
heating element symbol
Page 25
Wait for P1 to appear and LED L1 to change from red to green; the tank heating element light comes on until the set temperature is reached. The duration of this stage may vary depending on the mains water temperature and on the single-phase connection.
Press the 🛈 button quickly to display the tank (left) and boiler (right) temperatures for a short time.
Load the dishes
Select the program required by pressing .
Confirm the program start by pressing 2 and holding it down for 1 second (light L2 changes from green to orange).
Cycle in progress, the progress of the cycle is displayed by vertical bars which illuminate in sequence. If the door is opened "CLOSE" flashes and the program stops; when it is closed again the program restarts from the beginning .
At the end of the program "End" flashes
Unload the dishes
When the door is closed again, the system l
n offers the last program run.
Page 26

_seesmeg

EN

8.4 Changing the Program

N R ·

During heating of the water in the boiler and tank with the cycle running, the tank heating element 🖵 and boiler heating element Esymbols may appear on the display.

Filter presence sensor (on some models only)

The filter is fitted with a sensor which checks that it is properly fitted; if it is not in the correct position, the word "FiLter" appears on the display.

Λ TYPE OF DIRT DURAT

9 CHOOSING THE PROGRAM

PROGRAM TYPE OF DIRT DURATION (*)
P1 Glasses Short, about 1' 30";
1' with glassware function active.
P2 Glasses, cups and plates with light dirt Average, about 2' 30";
2' with glassware function active.
P3 Very dirty dishes and cutlery Long, about 4';
5'30" with sani function active.

(*) The cycle duration stated above refers to three-phase appliances supplied with hot water at >50°C <60°C. If the appliance is supplied with cold water, the cycle duration might increase depending on the intake water temperature, since the dishwasher is fitted with the HTR system, which requires set temperature and pressure for rinsing.

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10 SUPPLEMENTARY FUNCTIONS

Indicator lights showing: ○off; ◎green; ⊘orange; ♀ flashing.

To select a supplementary function, when the program required is shown on the display (P1, P2, P3 or P4) press the Sutton. Only one supplementary function can be selected for each program.

10.1 Selecting the crys"glassware" function (available in P1-P2)

Reduces the program's rinsing temperature and duration

After selecting the "Crys" function, perform a cycle with the appliance empty to stabilise the boiler temperature

Press © and hold it down to select the glassware function then press 2 to confirm the program start.

10.2 Selecting the "extra rinse" function (available in P1-P2-P3-P4)

Extends the duration of the rinse

During performance of cycles with Extra Rinse, the cycle duration increases by about 30" because of the increased duration of the rinsing phase and the time consequently required to restore the level and temperature in the boiler. If the Termostop is OFF and the dishwasher is connected to cold water, this function will be less effective

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10.3 Selecting the "sanitisation" function (only available in P3)

Increases the program's washing and rinsing temperatures and duration

N.B.:

  • the supplementary function remains selected until the program is changed or the dishwasher is switched off by pressing the 🛈 button.
  • During execution of the selected program, the display alternates between showing the supplementary function and the duration.
LOADING THE DISHES
Plates

The basket is able to take 8 plates. Remove solid residues (bones, fruit peel, stones, etc.) and first soak plates with dried residues of cheese, egg, etc. in water.

Glasses

Load glasses upside down.

Cutlery

Use the basket(s) provided. Load cutlery loose, preferably with the handle at the bottom, taking care not to injure yourself with fork prongs or knife blades.

TOTAL PUMP-OUT AT THE END OF THE DAY

The dishwasher is able to perform an automatic cleaning cycle at the end of the day.

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After a total pump-out the filters should be cleaned as described above.

Never switch the dishwasher off with water in the tank; always pump out first.

TOTAL PUMP-OUT AT THE END OF THE DAY + RESIN REGENERATION

(for models with water softener)

From time to time, on models with water softener, before the total pump-out at the end of the day the user will automatically be reminded to carry out the resin regeneration cycle, required after a number of washes which depends on the hardness of the water (about 30 for average setting H03). In this case the sequence will be as follows:

Topping up with regenerating salt (for models with water softener)

Salt must be added when the "no salt" light ( >>>) appears on the display.

Top up with salt when there is no water in the tank to prevent washing water from getting into the water softener device.

Caution: use only salt of the specific type, do not use cooking salt.

The salt tank has a capacity of about 1 kg of coarse-grained salt .

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The salt tank is in the bottom of the appliance's tank. After removing the basket, undo the cap and pour the salt in using the funnel supplied. Remove any salt residues around the opening before screwing the cap back on.

11 MAINTENANCE AND CLEANING

Although no particular scheduled maintenance is required, users are advised to have the dishwasher checked by a specialist technician twice a year.

N.B. the manufacturer accepts no liability for wilful damage or damage deriving from carelessness, neglect, failure to comply with instructions, regulations and standards or incorrect connections.

11.1 Daily cleaning

The dishwasher has IPX4 protection, but the use of direct water jets for cleaning is forbidden .

Cleaning the filter during the day

In case of particularly heavy-duty working conditions, the filter should be cleaned every 30-40 cycles, keeping the machine in operating conditions; to do this, carry out the "partial tank pump-out" routine (program "PO").

Press the Dutton, and hold it down, until "P0" and the duration of 1' appear on the display.
Confirm by pressing 2; light L2 turns orange.
At the end of the pump-out the word "End" flashes on
the display. The display returns to showing "P1" . Clean
the filter; the dishwasher automatically fills the tank
when the door is closed.
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Remove the filters (simply lift them out as shown here), taking care that no large residues fall into the sump underneath. Clean them to remove residues and rinse with plenty of water, then put them correctly back in place; do not use sharp or pointed tools.

Clean away any limescale deposits to prevent excessive build-ups;

  • If possible, leave the door ajar when not in use;
  • Clean surfaces thoroughly and often with a damp cloth; use neutral, non-abrasive detergents which do not use chlorine compounds, which corrode and damage stainless steel.

Do not use the products mentioned above even when cleaning the floor underneath or in the vicinity of the dishwasher,

to ensure that fumes or drops cannot damage the steel surfaces.

IMPORTANT: The dishwasher automatically performs program "P0" at the start of the day if water has been left in the tank and has dropped below the temperature of 40°C

11.2 Routine inspection of the spray arms

Remove the washing and rinsing (top and bottom) spray arms by unscrewing the central screw; remove the rinsing spray arms 3 and remove the screws 2 as shown. Do not unscrew the nozzles. Clean the holes and nozzles under a jet of clean running water; do not use tools which might cause damage. Reassemble the spray arms with care.

Clean the outside of the appliance with a damp cloth and neutral soap, rinsing and drying thoroughly.

11.3 Lengthy periods out of use

If the dishwasher is to be out of use for a fairly long period of time, the detergent and rinse aid dispenser devices must be emptied to prevent crystallisation and damage to the pumps: remove the intake hoses from the detergent and rinse aid containers and place them in a container of clean water, then perform a few wash cycles followed by a complete pump-out.

Finally, turn off the master switch, close the water intake valve and leave the door ajar until the interior is completely dry. The detergent and rinse aid intake hoses must be put back into the containers when the dishwasher is returned to service, taking care not to swap them over (red hose = detergent, blue hose = rinse aid).

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- CW 420/430

•smeg

12 TROUBLESHOOTING

If the system fails to pump out because the drain pump is fouled (as a result of incorrect filter positioning), proceed as follows:

Bale out the dishwasher with a basin and disconnect it from the electrical mains.

Unscrew the screw A , release the tang B and lift it.

Check that the impeller of the drain pump underneath the cover turns freely, and is free from dirt, limescale residues, or pieces of glass. Never use tools, screwdrivers, scissors, etc.

PROBLEM POSSIBLE CAUSE POSSIBLE REMEDY
LIGHT S1 DOES NOT COME ON Mains power failure Check electrical mains connection.
The dishwasher has not yet finished filling. Wait for the word FILL to go out.
NOT START The word CLOSE remains on the display If the word CLOSE remains on the display even with the door closed, call the after-sales service.
Spray arm washing holes blocked by dirt or limescale Remove spray arms and clean
them
(11.2 Routine inspection)
Filter fouled See "Cleaning the filter during the day"
Too little or unsuitable detergent or rinse aid Check type and quantity of detergent.
POOR WASHING RESULTS No or not enough detergent or
rinse aid being supplied:
detergent or rinse aid not being
taken from the relative
container. 		Pipe inside detergent and/or rinse
aid peristaltic pump worn or broke,
have it replaced by the After-Sales
Service.
Plates/glasses badly arranged Arrange plates/glasses correctly.
Low washing temperature Check temperature shown on the display, call the after-sales service if less than 50
Inappropriate cycle set Increase washing duration,
especially if dishes are very dirty or
dirt has dried on.
Spray arm nozzles fouled - Check that nozzles are clean, and
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/
B. H.
- N
/
Limescale in boiler ensure that the softener is working
properly (if installed).
- Check that the filter of the hose
inserted in the rinse aid tank is not
fouled.
INADEQUATE RINSING Rinse aid unsuitable or not
being delivered correctly.
Rinsing temperature too low 		Check container of rinse aid and
whether it is suitable for the type
of mains water.
Check boiler temperature setting
Restore T Stop ON and/or connect
the appliance to a hot water
supply.
If the problem persists, contact the
after-sales service.
DISHES NOT PROPERLY DRIED Rinse aid unsuitable or not
being delivered correctly.
Water hardness above 12°f or
large amounts of dissolved
salts 		Check container of rinse aid and
whether it is suitable for the type
of mains water. If the problem
persists, contact the after-sales
service.
STAINS ON GLASSES AND
CUTLERY 		Drain hose incorrectly positioned or partially obstructed. Check that the dishwasher drain
hose and rain are unobstructed
and the drain is not too high up;
see connection diagram.
WATER IN TANK AFTER PUMP-
OUT 		Drain hose incorrectly positioned or partially obstructed. Check that the dishwasher hose
and drain are unobstructed and
the drain is not too high up; see
connection diagram.

13 MALFUNCTIONS SHOWN ON THE DISPLAY (FOR THE USER)

The dishwasher is able to identify a number of malfunctions and show them on the display.

If the problem persists after the dishwasher has been switched off and back on, proceed as described below:

(TO ALLOW THE AFTER-SALES SERVICE TO TAKE THE APPROPRIATE ACTION, ALWAYS MAKE A NOTE OF THE ERROR INDICATED)

Err04 Tank temperature probe malfunction Contact the After-Sales Service
Err05 Tank water filling malfunction Check that the water intake tap is on and the dynamic pressure in intake system, inspect water intake filter and clean if necessary. If the problem persists, contact the After-Sales Service.
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Err06 Water pump-out malfunction
(dishwasher is left full of water) 		Inspect the filters for dirt and check that the drain
hose is not blocked, bent or crushed.
Check that the drain pump is not blocked by dirt;
proceed as described in point "11.2 Routine
inspection".
If the problem persists, contact the After-Sales
Service.
Err09 Tank water level too high Contact the After-Sales Service.
Err23 Boiler heating malfunction (does not heat up) Contact the After-Sales Service.
Err24 Boiler temperature probe malfunction Contact the After-Sales Service.
Err25 Boiler water filling malfunction Check that the water intake tap is on and the dynamic pressure in intake system, inspect water intake filter and clean if necessary. If the problem persists, contact the After-Sales Service.
Err26 Boiler emptying malfunction Check that the rinsing spray arm nozzles are not
fouled
If the problem persists, contact the After-Sales
Service.
Err27 Boiler emptying malfunction – with tank full Contact the After-Sales Service.
Err28 Boiler heating malfunction (overheating) Contact the After-Sales Service.
Page 35

INFORMATION AND AFTER-SALES SERVICE FOR SMEG PRODUCTS
COMMERCIAL DISHWASHERS

Our Sales Department staff will be able to provide you with information about prices and special offers.

Our After-Sales Department will be able to provide you with guidance about keeping your appliance

functioning correctly and put you in touch with your nearest authorised Service Centre.

* Maximum cost 14,26 cent./min. including VAT with no charge on answer from landline. Maximum cost 48 cent./min. including VAT with maximum charge on answer of 15.49 cents including VAT from cell phone.

For further details of costs of calls from cell phones contact your operator.

Our whole product offering can be viewed at:

www.smeg-ristorazione.com

International customers, please contact your local SMEG distributor.

Smeg S.p.A. Via Leonardo da Vinci, 4 - 42016 Guastalla (Reggio Emilia) Tel. +39 0522 8211 - Fax + 39 0522 821453 email ristorazione@smeg.it

19.390.2672.00 01/09/2011
Manual Ed. Date
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