Smeg CW511MDA-2 User Manual

PROFESSIONAL DISHWASHER

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CW/CWH 511

TABLE OF CONTENTS

1 PRECAUTIONS FOR SAFETY AND USE .......................................................................................................................2

1.1 Trademark ........................................................................................................................................................2

1.2 Name and address of manufacturer or distributor ..........................................................................................2

1.3 Declaration of conformity to product standards ..............................................................................................2

2 TECHNICAL DATA ......................................................................................................................................................3

3 INSTALLATION AND POSITIONING ............................................................................................................................6

4 INSTRUCTIONS FOR TECHNICAL STAFF .....................................................................................................................7

4.1 Plumbing hookup ..............................................................................................................................................7

4.2 Electrical connection ........................................................................................................................................7

5 FIRST START-UP ........................................................................................................................................................8

5.1 Using the water softener (on models with this feature only) ..........................................................................8

6 SET-UP (Authorised technical staff only) ..................................................................................................................9

6.1 Contents of display ........................................................................................................................................ 10

6.2 Note on display of temperatures .................................................................................................................. 10

6.3 Parameter programming procedure ............................................................................................................. 10

6.4 Modifiable parameters .................................................................................................................................. 11

6.5 Adjusting detergent and rinse aid dispensing ............................................................................................... 11

6.6 Starting the peristaltic pumps in manual mode – rapid filling of detergent and rinse aid circuit ................ 12

6.7 Adjusting the regeneration frequency (models with softener only) ............................................................. 12

6.8 Mains water hardness setting table .............................................................................................................. 12

7 MALFUNCTIONS SHOWN ON THE DISPLAY (FOR THE TECHNICIAN) ..................................................................... 13

8 INSTRUCTIONS FOR THE USER ............................................................................................................................... 14

8.1 Control panel ................................................................................................................................................. 14

8.2 Before washing .............................................................................................................................................. 15

8.3 First use each day (tank and boiler empty) ................................................................................................... 16

8.4 Choosing the program ................................................................................................................................... 17

8.5 Changing the program ................................................................................................................................... 17

9 MAINTENANCE AND CLEANING............................................................................................................................. 19

9.1 Daily cleaning of filters .................................................................................................................................. 19

9.2 Routine inspection of the spray arms (once a week) .................................................................................... 19

9.3 Lengthy periods out of use ............................................................................................................................ 20

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10 TROUBLESHOOTING .......................................................................................................................................... 20

11 MALFUNCTIONS SHOWN ON THE DISPLAY (FOR THE USER) ............................................................................ 21

SMEG Thanks you for choosing one of its products.

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

1.1 Trademark

SMEG

Manual edition

19390501502 20/01/2015

Manual Ed. Date

1.2 Name and address of manufacturer or distributor

Smeg S.p.A.

Via Leonardo da Vinci, 4 - 42016 Guastalla (RE) Tel. [phone] - Fax + 39 0522 821453
internet: www.smegfoodservice.com, email : [e-mail]

Info :

INFORMATION AND SERVICE FOR SMEG PROFESSIONAL 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. Our entire product offering can be viewed at:

1.3 Declaration of conformity to product standards

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

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61000-3;4, 50366). THE MANUFACTURER DECLINES ALL RESPONSIBILITY FOR INJURY OR DAMAGE CAUSED BY FAILURE TO
COMPLY WITH THE ABOVE REGULATIONS OR DERIVING FROM INCORRECT USE, TAMPERING WITH EVEN JUST ONE PART OF THE
APPLIANCE AND THE USE OF NON-ORIGINAL SPARE PARTS.

THIS MANUAL IS AN INTEGRAL PART OF THE DISHWASHER AND MUST ALWAYS BE KEPT INTACT TOGETHER
WITH THE APPLIANCE.

POSITIONING, HOOKUP, COMMISSIONING, TROUBLESHOOTING AND REPLACING THE POWER CABLE MUST BE
CARRIED OUT BY QUALIFIED STAFF.

THE APPLIANCE MUST BE GROUNDED AS REQUIRED BY ELECTRICAL EQUIPMENT SAFETY STANDARDS.

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.

2 TECHNICAL DATA

Single-phase Three-phase

kPa (bar) 100-600 (2 ÷ 6) 100-600 (2 ÷ 6)

Water intake temperature °C 15°C – 60°C 15°C – 60°C

Intake water hardness (models with softener) °df 15° - 60° 15° - 60°

Intake water hardness (models without softener) °df 12° 12°

Rinse cycle water consumption l 3 3

Boiler capacity l 6 6

Tank capacity l 11 11

Standard cycle duration with intake water at 50°C s 120/150/180 90/120/180

Noise level dB(A) < 50 < 50

Degree of protection IPX CW = 4 - CWH =5

Net weight Kg CW = 52/55 - CWH =82/89

Power supply cable type ◄HAR► H07RN-F H07RN-F

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MAXIMUM

POWER

POWER

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SEE APPLIANCE LABEL

VOLTAGE

FUSE

PROTECTION

TANK

HEATING

MOTOR

BOILER
(1.5X3)

TOTAL

CONNECTION

POWER

ABSORPTION

CABLE

400V-50Hz/3/N/PE 13A 1.1kW 0.7kW 5kW 5.7kW 11A 5X4

230V-50Hz/3/PE 20A 1.1kW 0.7kW 5kW 5.7kW 16A 5X4

230V-50Hz/1/N/PE 25A 1.1kW 0.7kW 3,3kW 4.0KW 18A 3X4

230V-50Hz/1/N/PE 13A 1.1kW 0.7kW 1.7kW 2.4kW 11A 3X2.5

SEE APPLIANCE LABEL

MAXIMUM

POWER

ABSORPTION

CABLE

VOLTAGE

FUSE

PROTECTION

TANK

HEATING

MOTOR

BOILER
(1.5X3)

TOTAL

CONNECTION

230V-50Hz/1/N/PE 20A 1.1kW 0.7kW 2.8kW 3.4kW 16A 3X2.5

CAVITY DIMENSIONS FOR BUILT-UNDER INSTALLATION

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APPLIANCE DIMENSIONS AND CONNECTION POSITIONS

(* N.B.: distance “1000” - max 600 if siphon with valve is used)

(**N.B.: distance “60” - with heat exchanger)

CW/CWH 511

APPLIANCE DIMENSIONS AND CONNECTION POSITIONS

(*NB – VALUE “1400” WITH ASTERISK: max 1000 if siphon with valve is used)

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KEY TO LETTERS USED IN DIAGRAM

R

Q

P

E

S

T

C

LOWER BACK PANEL

EARTH TERMINAL

PERISTALTIC PUMP HOSES

ELECTRICITY SUPPLY CABLE

DRAIN HOSE

FILLER HOSE

EXTERNAL DISPENSER POWER SUPPLY CABLE ENTRY POINT

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.

POSITIONING

Warning: 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.

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4 INSTRUCTIONS FOR TECHNICAL STAFF

4.1 Plumbing hookup

PLUMBING HOOKUP

The water pipelines and electricity supply cable lead out of the bottom right-hand corner of the appliance.
Connect the water intake hose to a connector with ¾” gas threaded fitting, fitting the filter A provided (in
models with Acquastop, the filter and ring-nut form a single unit). The connection to the water mains must
only be made with new hoses; the use of old or worn hoses is not permitted.

FOR MODELS WITH A WATER SOFTENER

an ‘approved’ double check valve or some other no less effective device providing backflow prevention protection to at least
fluid category two shall be fitted at the point of connection between the water supply and the fitting or appliance.

FOR MODELS WITHOUT A WATER SOFTENER

an ‘approved’ single check valve or some other no less effective device providing backflow prevention protection to at least
fluid category two shall be fitted at the point of connection between the water supply and the fitting or appliance.

The dynamic water supply pressure must be between 1 and 6 bar; if it is higher, installation of a pressure reducer is necessary.
If the pressure is less than 2.5 bar it might be necessary to fit a special pump on the appliance to ensure optimal performance.
Contact the After-Sales Service. 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. Drainage: 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)

Warning: 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.

4.2 Electrical connection

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 terminal for the connection is in the bottom right­hand 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, IF FITTED, MUST BE REPLACED BY THE MANUFACTURER OR AN AUTHORISED
SERVICE CENTRE IN ACCORDANCE WITH THE TECHNICAL DATA SPECIFIED ON THE WIRING DIAGRAM
SUPPLIED WITH THE APPLIANCE, TO PREVENT ALL RISKS.

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5 FIRST START-UP

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 after 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.

IMPORTANT

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
professional 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 peristaltic pumps should be replaced by the After­Sales Service every 12 months or 15,000 wash cycles.

5.1 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.

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Set-up

CW/CWH 511

6 SET-UP (Authorised technical staff only)

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

Control Panel

Key to Symbols

L1

L2

L3

L4

L5

L6

L7

On/off button

Total pump-out (tank -boiler) button

Regeneration button (only if softener is fitted)

Regenerating salt symbol (only if softener is fitted)

Short programme button

Medium programme button

Long programme button

Short programme Led

Medium programme Led

Long programme Led

Resin regeneration Led (only if softener is fitted)

Drainage Led

Appliance on Led

No salt Led (only if softener is fitted)

Key to messages which scroll across display

CLOSE Close the door

FILL Machine preparing for cycle

End End of operation requested

PrF 500 Appliance model (displayed when the appliance is switched on with the master switch).

UnLoad Pump-out

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Set Regeneration

Peristaltic pumps in Manual

Using the buttons

CW/CWH 511

Button Short press

Display of temperatures in
Boiler (L3) and tank (L1)

Scroll through Setup
options (2)

(mod. with softener only)

Set Short Programme

Set Medium Programme

Set Long Programme

Set P0

1) Starting from appliance in “OF” status

2) From setup menu only.

3) Restores the default parameters, for new settings see point (6.3)

A series of operations can be carried out when the dishwasher is first installed to customise it to the user's requirements.

Pressed for 2” Pressed for 5” Long press, release, press again

On/OF Setup Menu (1)

Set Pump-out Start Pump-out

Start Regeneration

Start Short Programme

Start Medium Programme

Start Long Programme

Empty tank Start P0 Start Test (1)

Reset to DEFAULT

mode to prime pipes

parameters (3)
Technician user only

6.1 Contents of display

The two digits provide the following information:

•

Appliance off but powered up: all decimal points on both digits

•

Appliance on and ready for use : Tank temperature

•

Washing phase (programme running, washing pump in operation): Tank temperature

•

Rinsing phase (programme running, washing pump stopped): Boiler temperature

•

Programming phase: See parameter programming section

•

Error message: See error messages section

6.2 Note on display of temperatures

Temperatures shown on the display might not indicate the actual temperature in the tank and/or boiler during heating ­wait about 1’ after the heating elements switch off to see the real temperature.

6.3 Parameter programming procedure

To modify the parameters, proceed as follows starting with the appliance in “OF” status

1) switch the appliance using the On/OF button

2) hold down the button for about 4/5 seconds, until Led L6 goes out and then lights up again, then release the button
and press it again.

3) Press the pump-out button to scroll through the parameters for modification

4) Modify the parameter by pressing button P1

5) During setup operations, Led L1 indicates that the display is showing the description of the parameter, while Led L3
indicates that its value is being displayed (the two alternate)

6) Select the other parameters for modification in the same way and proceed as described above

7) After setting all the appliance parameters, press the button to quit the setup function.

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6.4 Modifiable parameters

This table lists the model choice or programme and temperature option parameters.

Display Settings available Description

°b

°t

St

HA

TS

Sr

From 85° to 71° Boiler temperature

From 62° to 52° Tank temperature

On - OF Auto-start: washing programme starts when door is closed

On enabled OF disabled

H0 – H6 Water hardness setting (see table 6.8)

On - OF Thermostop

On enabled OF disabled

- Access Service menu (for Authorised Engineer only)

6.5 Adjusting detergent and rinse aid dispensing

WARNING:
Ensure that the appliance is not powered up - ELECTRIC SHOCK HAZARD

RD: Detergent dispensing regulator screw (OPTIONAL)
RB: Rinse aid dispensing regulator screw

Important! If the pump does not deliver rinse aid, check the valve inside “A”: unscrew anti-clockwise.
RD/RB: Adjustments must be made using the adjuster screw as explained. The quantity dispensed is reduced by turning

anticlockwise and increased by turning clockwise.

12

Hardness

Setting

Resin regeneration interval:

CW/CWH 511

6.6 Starting the peristaltic pumps in manual mode – rapid filling of detergent and rinse

aid circuit

With the dishwasher powered up and the tank full, press the buttons simultaneously for 5”
The peristaltic pumps continue to operate until one of the 2 buttons is pressed again; the lights remain on as long as the pumps
are running. The display shows “r d” . Bear in mind that the rinse aid peristaltic pump fills the circuit in about 7 minutes, while
for the detergent it only takes 2 minutes. So draw only rinse aid from the jerry cans (1 for the rinse aid and the other for the
detergent) for the first 5 minutes and then also take in detergent for the last 2.

6.7 Adjusting the regeneration frequency (models with softener only)

See appliance setup menu (point 6.4)

With values over 60°dF an external water treatment device must be used and the regeneration frequency must
be set at H0

6.8 Mains water hardness setting table

This table shows the relationship between the intake water hardness and the quantity the resins are able to treat;
regeneration is required once the appliance has performed the set number of cycles. Regeneration cycle duration: 12
minutes.

Hardness

(°dH German degrees)

Regeneration off Regeneration off

8.5 15

11 20

17 30

22.5 40

28 50

33.5 60

(°dF French degrees)

level

H0

H1 81

H2 69

H3 default 42

H4 24

H5 19

H6 11

approximate number

of wash cycles

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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:

Er 04

Er 05

Er 06

Tank temperature probe
malfunction

Tank water filling malfunction The tank does not fill within the allowed time: check water intake tap, dynamic

Water pump-out malfunction

Tank temperature probe disconnected or not working.

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 level switch failure. (always on
empty: check whether tank safety pressure switch is tripped). - leak from pipe
connected to air trap: if problem persists, check during working programme. ­drain line vent valve fouled: tank empties completely at end of a wash
programme due to siphon effect.

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). If it persists, check in this order: ­with tank empty: constant “tank full” reading: tank pressure switch faulty or
leak from connections of air trap connection pipe (water entering pipe)

- with tank full: drain pump has failed

Er 23

Er 24

Er 25

Er 26

Boiler does not heat up as expected. The problem might occur because water is continually entering the tank (the

causes are as for “Er 05” – see above) 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: - damaged boiler
heating element - contactor failure - open on boiler safety thermostat side. ­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, pressure switch continues to give full
reading even with boiler empty: check boiler air trap and/or relative pressure
switch and replace if necessary.

Boiler temperature probe
malfunction

Boiler water filling malfunction The boiler does not fill within the allowed time: check water intake tap,

Boiler emptying malfunction - check that rinsing spray arm nozzles are clean

Boiler temperature probe disconnected or not working

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) – item “rp” in service menu not set
correctly

- boiler pressure switch has failed (continuous full reading)

- pipe leaking/disconnected (water entering pipe)

- rinsing pump not working

Boiler emptying malfunction – with
tank full

Er 27

Or boiler full signal on models
without rinsing pump

Boiler pressure switch has failed (continuous full reading) if appears when
rinsing pump is not present; presence of boiler pressure switch: check setting
of item “rp” in service menu

“rp”=on for models with rinsing pump
“rp”=of for models without rinsing pump

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8 INSTRUCTIONS FOR THE USER

8.1 Control panel

Key to Symbols

On/off button

Total pump-out (tank -boiler) button

Regeneration button (only if softener is fitted)

Regenerating salt symbol (only if softener is fitted)

Short programme button

Medium programme button

Long programme button

L1

L2

L3

L4

L5

L6

L7

Short programme Led

Medium programme Led

Long programme Led

Resin regeneration Led (only if softener is fitted)

Drainage Led

Appliance on Led

No salt Led (only if softener is fitted)

Key to messages which scroll across display

CLOSE Close the door

FILL Machine preparing for cycle

End End of operation requested

PrF 500 Appliance model (displayed when the appliance is switched on with the master switch).

UnLoad Pump-out

15

Using the buttons

CW/CWH 511

Button Short press

Display of temperatures in
Boiler (L3) and tank (L1)

Set P0

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.

Pressed for 2” Pressed for 5”

On/OF

Start Pump-out

Start Regeneration

Start Short Programme

Start Medium
Programme

Start Long Programme

Start programme P0: emptying of tank to clean filters.
Switch off and back on to allow reuse.

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. Failure to comply with this recommendation
leads to forfeiture of the warranty entitlement on the appliance’s water system.
Industrial dishwasher detergents may cause serious irritation. Comply carefully with the instructions provided by the
detergent producer on the pack.

Check

1. Turn on the mains water tap (user)

2. The level of detergent and rinse aid in the containers.

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CW/CWH 511

3. That there is regenerating salt in the relative container (if fitted).

4. That the filters are in place, the spray arms rotate, and there are no foreign bodies in the dishwasher.

5. Switch on the master switch (user): the decimal points of both digits appear on the display.

8.3 First use each day (tank and boiler empty)

Display shows Actions and what happens

Door closed and master switch on ON:

Press and hold it down for 2/3 seconds; the ON/OF Led and the two
digits on the display light up.

With the door closed, filling of the tank begins. The word “FILL” scrolls
across the display and the Led on will be that of the latest program set.
The display shows “End” when the tank is full.

Load the dishes and close the door.

Select the program required by holding down one of the three buttons
required for about 2”; the Led of the program flashes.
While washing is in progress the display shows the water temperature in
the tank. During rinsing, it shows the boiler temperature.

At the end of the program the program Led comes on and “End" scrolls
across the display

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CW/CWH 511

Unload the dishes

When the door is closed again, the system offers the last program run.

8.4 Choosing the program

Single-phase Three-phase

SYMBOL PROGRAM

Short

Medium

Long

(*) The cycle duration stated above is guaranteed if the appliance is connected to 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
and the "Thermostop" setting.

Glasses and cups

Glasses, cups and plates with light dirt

Very dirty dishes and cutlery

TYPE OF DIRT DURATION (*) DURATION (*)

2” 1.5”

2.5” 2”

3” 3”

8.5 Changing the program

If the master switch is not turned off, the appliance sets on the last
programme performed. To change it, press the key of the program
required; the Led comes on.

To confirm hold down for about 2”. The Led starts to flash and the
washing programme starts.

If a programme is already running, it can be changed by first switching the appliance to pause status (by pressing one of the

buttons for 2”) and then selecting the programme required.

Glasses

Load glasses upside down.

Cutlery

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

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Plates

Plates

The basket is able to take 12 soup plates or 18 dinner plates.
Remove solid residues (bones, fruit peel, stones, etc.) and first soak
plates with dried residues of cheese, egg, etc. in water.

TOTAL PUMP-OUT AT THE END OF THE DAY

Press the pump-out button for about 5”, the Led flashes and the
pump-out and automatic tank cleaning phase starts. The word
“UnLoad” scrolls across the display. If the Led does not flash, the
program has not been started and the boiler heating element is not on.

When pump-out is complete the appliance switches off (only 2 dots lit
on the display)

After a total pump-out the filters should be cleaned as described in the relevant point.

Never switch the dishwasher off with water in the tank; always pump out first. Models with softener: if the
set number of cycles (see point 6.8 of the “technical manual”) is reached, regeneration is carried out as well
as the pump-out; the entire process lasts about 15’, after which the appliance switches off automatically.

Resin regeneration (for models with water softener)

Once the set number of wash cycles (see point 6.8 of the “technical manual” is reached), the Led above the button flashes.
Therefore, during the working day resin regeneration must be carried out, following the procedure described below. There are
2 regeneration modes.

1) ON REQUEST
Press the button for 5” to start regenerating; the Led flashes and the
regeneration phase starts. It lasts about 10 minutes, during which time
the Led keeps flashing. (Regeneration cannot be interrupted).

2) AT THE END OF THE DAY
Start the total pump-out and the appliance will perform regeneration
before emptying.

When pump-out is complete the appliance switches off (only 2 dots lit
on the display)

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Topping up with regenerating salt (for models with softener)

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

Salt must be added when the Led underneath the symbol shown in the box on the left lights up. Top up with salt

when there is no water in the tank to prevent washing water from getting into the water softener device. The

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

9 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, which lead to forfeiture of warranty cover. If
possible, leave the door ajar when not in use; Clean surfaces thoroughly and often with a damp cloth; use neutral, non­abrasive 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, as vapours or
drops may damage the steel surfaces.

The dishwasher has IPX4/5 protection but pointing water jets straight at it for cleaning is forbidden

9.1 Daily cleaning of filters

Cleaning the filter at the end of each working day

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;

9.2 Routine inspection of the spray arms (once a week)

Remove the washing and rinsing (top and bottom) spray arms by unscrewing the central ring-nut 1; remove the parts of the
rinsing spray arms 3 by taking out the screws 2 with a screwdriver as shown below. 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.

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9.3 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).

10 TROUBLESHOOTING

Led 6 does not light up

Washing program does not
start

Poor washing results Spray arm washing holes blocked by

Inadequate rinsing

Stains on glasses and cutlery

Water in tank after pump-out

Dishes not properly dried

How to deal with any problems without calling the after-sales service

PROBLEM POSSIBLE CAUSE POSSIBLE REMEDY

Mains power failure Check electrical mains connection.

The dishwasher has not yet finished
filling.

dirt or limescale

Filter fouled See “Cleaning the filter during the day”

Too little or unsuitable detergent or
rinse aid.

No or not enough detergent or rinse
aid being supplied: detergent or rinse
aid not being taken from the relative
container.

Plates/glasses badly arranged Arrange plates/glasses correctly.

Low washing temperature Check tank temperature shown on the display, call

Inappropriate programme set Increase wash programme duration, especially if

Dynamic pressure of mains water
insufficient
Spray arm nozzles fouled
Limescale in boiler

Rinse aid unsuitable or not being
delivered correctly.

Water hardness above 12°f or large
amounts of dissolved salts

Drain hose incorrectly positioned or
partially obstructed.

Low rinsing temperature due to
Thermostop OF and/or water intake
temperature below 50°

Wait for the end of the “FILL” phase

Remove spray arms and clean them (routine
checks).

Check type and quantity of detergent.

Check that the intake filter is not fouled. If you are
unable to solve the problem, call the after-sales
service.

the after-sales service if less than 50°C

dirt has dried on.

Check mains water pressure. Check that water
intake filter is not fouled. Clean rinsing nozzles.
If you are unable to solve the problem,
call the after-sales service.

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.

Check that the dishwasher hose and drain are
unobstructed and the drain is not too high up; see
connection diagram.

Check that the water supplying the
appliance is at least at 50°

Rinse aid being delivered properly
If the problem persists call the after-sales service.

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11 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:

ERROR POSSIBLE CAUSE POSSIBLE REMEDY

Er 04 Tank temperature probe malfunction Contact the After-Sales Service

Er 05 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.

Er 06 Water not pumped out of tank.

Er 23 Boiler heating malfunction (does not

heat up)

Er 24 Boiler temperature probe malfunction Contact the After-Sales Service.

Er 25 Boiler water filling malfunction Check that the water intake tap is on and the dynamic pressure in

Er 26 Boiler emptying malfunction Check that the rinsing spray arm nozzles are not fouled

Er 27 Boiler emptying malfunction – with tank

full

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)
If the problem persists:

- with the tank empty: tank pressure switch defect (the contact is
locked on full)

- with tank full: drain pump has failed
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.
If the problem persists, contact the After-Sales Service.

Contact the After-Sales Service.

intake system, inspect water intake filter and clean if necessary. If
the problem persists, contact the After-Sales Service.

If the problem persists, contact the After-Sales Service.

Contact the After-Sales Service.

The information in this manual s provided for guidance only. The contents and the equipment

described may be subject to change without notice

Les information continues dans ce mode d’emploi ne sont publiée qu’à titre informatif. Ces

informations et l’appareil décrit peuvent faire l’objet de modifications sans aucun préavis

19.290.1750.02 20/01/2015

Rev. Manuale Date