TABLE OF CONTENTS
1 PRECAUTIONS FOR SAFETY AND USE ........................................................................... 3
2 TECHNICAL DATA ......................................................................................................... 4
3 INSTALLATION AND POSITIONING................................................................................ 6
4 INSTRUCTIONS FOR TECHNICAL STAFF ......................................................................... 7
4.1 lumbing hookup ..................................................................................................... 7
4.2 Electrical connection .............................................................................................. 8
5 FIRST START-UP............................................................................................................ 9
5.1 Using the water softener (on models with this feature only) ................................. 9
6 SET-UP ....................................................................................................................... 10
6.1 Glasswasher parameter modification procedure: ................................................ 10
6.2 Quit “SET-UP” menu ............................................................................................ 12
6.3 Rinsing temperature setup .................................................................................. 13
6.4 Washing temperature setup ................................................................................ 13
6.5 Rinse aid dispensing setup ................................................................................... 13
6.6 Detergent dispensing setup ................................................................................. 13
6.7 Autostart function ............................................................................................... 14
6.8 Regeneration frequency setup (models with softener) ........................................ 14
6.9 tStP (minimum rinsing temperature) function ..................................................... 15
6.10 Rinse aid pump (display and if required reset during maintenance) ................ 15
6.11 Detergent pump (display and if required reset during maintenance) .............. 15
6.12 Energy consumption – Display and reset if required ......................................... 16
6.13 Customisation of duration of program P4. ........................................................ 16
6.14 Service setting (for After-Sales Service only) ..................................................... 16
6.15 Starting the peristaltic pumps – rapid filling of detergent and rinse aid delivery
circuit. 16
7 MALFUNCTIONS SHOWN ON THE DISPLAY (FOR THE TECHNICIAN) ........................... 17
8 INSTRUCTIONS FOR THE USER ................................................................................... 19
CWG 520-530
These are intended for the qualified staff who are to install, commission and test
the appliance and carry out any servicing and repairs.
These provide recommendations for use, a description of the controls and the
correct procedures for cleaning and maintaining the glasswasher.
8.1 Control panel ....................................................................................................... 19
8.2 Before washing .................................................................................................... 20
8.3 First use each day (tank and boiler empty) .......................................................... 20
8.4 Changing the Program ......................................................................................... 22
9 CHOOSING THE PROGRAM ........................................................................................ 22
10 SUPPLEMENTARY FUNCTIONS ................................................................................ 23
10.1 Selecting the crys“glassware” function (available in P1-P2) .............................. 23
10.2 Selecting the erin “extra rinse” function (available in P1-P2-P3-P4) ................. 23
10.3 Selecting the “sanitisation” function (only available in P3) ............................... 23
11 MAINTENANCE AND CLEANING .............................................................................. 26
11.1 Daily cleaning .................................................................................................... 26
11.2 Routine inspection of the spray arms ............................................................... 27
11.3 Lengthy periods out of use ............................................................................... 27
12 TROUBLESHOOTING ................................................................................................ 28
13 MALFUNCTIONS SHOWN ON THE DISPLAY (FOR THE USER) ................................... 29
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 glasswasher.
TECHNICAL INSTRUCTIONS
INSTRUCTIONS FOR THE USER
2
CWG 520-530
THIS MANUAL IS AN INTEGRAL PART OF THE GLASSWASHER AND MUST ALWAYS BE
KEPT INTACT TOGETHER WITH THE APPLIANCE.
POSITIONING, HOOKUP, COMMISSIONING, TROUBLESHOOTING AND REPLACING THE
POWER CABLE MUST ALWAYS 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 GLASSWASHER 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 GLASSWASHER MIGHT CAUSE IT TO TIP OVER, PUTTING PEOPLE IN DANGER. NEVER
LEAVE THE GLASSWASHER DOOR OPEN SINCE PEOPLE MIGHT TRIP OVER IT.
DO NOT DRINK ANY WATER LEFT IN THE DISHES OR GLASSWASHER 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.
1 PRECAUTIONS FOR SAFETY AND USE
THE GLASSWASHER IS INTENDED FOR PROFESSIONAL USE ONLY AND MUST ONLY BE USED BY
AUTHORISED STAFF. IT IS DESIGNED TO WASH TABLEWARE (GLASS, 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 . 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.
3
CWG 520-530
Water intake pressure
kPa (bar)
100-600 (1 ÷ 6)
Water intake temperature
°C
15°C – 60°C
Intake water hardness (models with softener)
°f
15°f-60°f
Rinse cycle water consumption
l
3.2
Boiler capacity
l
6
Tank capacity
l
11
Standard cycle duration with intake water at 50°C
s
90/150/240
Noise level
dB(A)
50
Degree of protection
IPX
4/5
Net weight
Kg
CWG 60-63
CWH 84-87
Power supply cable type
◄HAR►
H07RN-F
Fuse
A
4
SEE APPLIANCE LABEL
VOLTAGE
FUSE
PROTECTION
TANK
HEATING
MOTOR
BOILER
(1.5X3)
TOTAL
CONNECTION
Current
POWER
CABLE
400V-50Hz/3/N/PE
13A
0.8kW
0.7kW
5kW
5.7kW
11A
5X2.5
230V-50Hz/3/PE
25A
0.8kW
0.7kW
5kW
5.7kW
16A
5X2.5
230V-50Hz/1/N/PE (2RR)
25A
0.8kW
0.7kW
3.3kW
4.7KW
18A
3X4
230V-50Hz/1/N/PE
13A
0.8kW
0.7kW
1.7kW
2.4kW
11A
3X2.5
2 TECHNICAL DATA
4
CWG 520-530
CAVITY DIMENSIONS FOR BUILT-UNDER INSTALLATION
APPLIANCE DIMENSIONS AND CONNECTION POSITIONS
(*N.B. : VALUE “1000” - max 600 if siphon with valve is used)
(**N.B. : VALUE - max 60 - heat exchanger )
5
CWG 520-530
APPLIANCE DIMENSIONS AND CONNECTION POSITIONS
(**N.B. – VALUE “1400” WITH ASTERISK: max 1000 if siphon with valve is used)
KEY TO LETTERS USED IN DIAGRAM
R
LOWER BACK PANEL
C
FILLER HOSE
Q
EARTH TERMINAL
E
ELECTRICITY SUPPLY CABLE
P
PERISTALTIC HOSES
S
DRAIN HOSE
T
EXTERNAL DISPENSER POWER CABLE ENTRY POINT
3 INSTALLATION AND POSITIONING
INSTALLATION and POSITIONING
Bring the glasswasher 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.
6
CWG 520-530
Water supply and drain connection
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” 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.
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 glasswasher in the chosen point and remove the protective
film. Level the glasswasher (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.
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 must 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.
POSITIONING:
4 INSTRUCTIONS FOR TECHNICAL STAFF
4.1 lumbing hookup
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 a pressure reducer
must be installed. 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 warewasher. The
stated cycle duration applies to appliances supplied with hot water >50°C<60°C If the warewasher is
supplied with cold water, the cycle duration might increase depending on the intake water
temperature. The warewasher is fitted with a drain pump and can operate with drain connections
7
CWG 520-530
Caution: make sure that the intake and drain hoses are not bent, constricted or crushed
after installation.
The glasswasher 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 glasswasher 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 glasswasher, be easily accessible after
installation, and provide complete disconnection from the electrical mains in
overvoltage class III conditions.
Warning !!!
The glasswasher 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 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, AS PROVIDED, MUST BE REPLACED BY THE
MANUFACTURER OR AN AUTHORIZED SERVICE CENTER IN COMPLIANCE WITH THE
SPECIFICATIONS PROVIDED ON ELECTRICAL DIAGRAM SUPPLIED IN THE MACHINE IN
ORDER TO PREVENT ALL RISKS.
on the floor or wall. Refer to the connection diagram for the maximum permitted height of wall
drains – (see TECHNICAL DATA)
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
8
CWG 520-530
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.
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 glasswasher 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 glasswasher 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.
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
NOTE: It takes about 10-15 wash cycles before they arrive in detergent and rinse tank and boiler
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 glasswasher.
The dispenser must operate on 230V/50 Hz with maximum power absorption of 15 W.
Connect to the detergent dispenser outside the glasswasher using the red hose mentioned above.
5.1 Using the water softener (on models with this feature only)
9
CWG 520-530
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 UnLo1:58; 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:
Rinsing temperature (boiler temperature)
Washing temperature (tank temperature)
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 glasswasher. 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 regulations rinse aid pump should be checked.
Set-up
During first start-up, the functions/parameters listed below must be set or adjusted:
6 SET-UP
6.1 Glasswasher parameter modification procedure:
Only accessible after filling is complete or with the door open.
Indicator lights showing: off; green; orange; flashing.
10
CWG 520-530
Quantity of rinse aid dispensed, OPT, only if installed (the
number indicates the number of seconds for which the
peristaltic pump is operated)
Quantity of detergent dispensed, OPT, only if installed (the
number indicates the number of seconds for which the
peristaltic pump is operated)
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
Water hardness setting (OPT, on models with softener
only)
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
Rinse aid pump total operating minutes display.
This value can be reset during pump maintenance - see
below.
11
CWG 520-530
Detergent pump total operating minutes display.
This value can be reset during pump maintenance - see
below.
Energy consumption (kW) display
The Pc option indicates the total kW consumed since
installation of the glasswasher or since the latest reset.
Display of the number of cycles performed
When scrolling through the appliance parameters, the “tc
88888” item will also appear; this is the count of the total
cycles performed by the glasswasher since installation.
This parameter cannot be modified or reset unless the
software is reprogrammed.
Customisation of duration of program P4.
This submenu and the relative functions can only be
accessed with the aid of a password available on
SmegTech and only by technical staff.
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: off; green; 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.
12
CWG 520-530
Modify the value of the parameter by pressing .
(Default value: 71°C)
Min. 71°C – max. 85°C
Modify the value of the parameter by pressing .
(Default value: 62 °C)
Min. 52°C – max. 62°C
Modify the value of the
parameter by pressing .
RINSE AID
Delivery time
(s)
Delivery
quantity (c.c.)
0
0,0 6 0,7
* default value (factory preset)
12
1,3
18
2,0
24
2,7
30*
3,3
36
4,0
42
4,7
Modify the value of the
parameter by pressing
.
DETERGENT
Delivery time
(s)
Delivery
quantity (c.c.)
0
0,0 4 1,7
8
3,3
12*
5,0
6.3 Rinsing temperature setup
6.4 Washing temperature setup
Indicator lights showing: off; green; orange; flashing.
6.5 Rinse aid dispensing setup
6.6 Detergent dispensing setup
13
CWG 520-530
* default value (factory preset)
16
6,7
20
8,3
24
10,0
30
11,7
36
13,3
42
15,0
Modify the parameter (ON/OFF) by pressing .
Modify the
value of the
parameter by
pressing .
Hardness
(°dH German
degrees)
Hardness
(°dF French
degrees)
Setting
level
Regeneration
off
Regeneration
off
H00
8,5
15
H01
11
20
H02
17
30
H03
22,5
40
H04
28
50
H05
Regeneration cycle duration: 12 minutes
33,5
60
H06
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.
With values over 60°dF an external water treatment device must be used and the regeneration
frequency must be set on H00.
14
CWG 520-530
Modify the parameter (ON/OFF) by pressing .
To reset, press for 3 seconds.
To reset, press for 3 seconds.
6.9 tStP (minimum rinsing temperature) function
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.
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)
6.11 Detergent pump (display and if required reset during maintenance)
15
CWG 520-530
To reset, press for 3 seconds.
Access the programming procedure and scroll through to
“ınF” using the button, then to 03:00 and press the
button to set the time required (from 3 to 10 minutes)
After a few seconds without the user pressing any buttons,
the display will return to the normal operating status and the
modifications will be saved.
See information on Smegtech
6.12 Energy consumption – Display and reset if required
6.13 Customisation of duration of program P4.
The duration of program P4 can be customised from 3 to 10 minutes
6.14 Service setting (for After-Sales Service only)
6.15 Starting the peristaltic pumps – rapid filling of detergent and rinse aid
delivery circuit.
Perform after the parameter modification procedure explained in the previous point.
Indicator lights showing: off; green; orange; flashing.
16
CWG 520-530
With the glasswasher powered up, access “programming
mode” by pressing the on/off button for a few seconds; at
the “beep”, release the button and press it again quickly
within 0.5 seconds.
The peristaltic pumps continue to operate until the same
button is pressed again. The rinse aid and detergent symbol
lights remain on as long as the pumps are on; 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.
Err01
The anti-flooding system has
been activated (for the
relevant models only).
Large water leak: check the origin of the problem.
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).
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
7 MALFUNCTIONS SHOWN ON THE DISPLAY (FOR
THE TECHNICIAN)
The glasswasher is able to identify a number of malfunctions and show them on the display. If the
problem persists after the glasswasher has been switched off and back on, proceed as described below:
17
CWG 520-530
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 tank full
Boiler pressure switch has failed (continuous 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
18
CWG 520-530
On-off button
Program selection button
Start CONFIRM/PAUSE button
Total emptying button (tank and boiler)
Additional function selection button
L1 Mains power on light
L2 Intake/standby cycle in progress light (red/green)
L3 Pump-out in progress light
No rinse-aid symbol (if a system for monitoring outside the glasswasher is provided)
Tank heating element on symbol
No salt symbol (if softener is fitted)
Boiler element on symbol
No detergent symbol (if a system for monitoring outside the glasswasher is provided)
8.1 Control panel
8 INSTRUCTIONS FOR THE USER
19
CWG 520-530
Turn on the
mains water
tap (user)
Check:
Switch on the
master switch
(user): the word
“OFF” appears on
the display.
The level of
detergent and
rinse aid in the
containers.
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 glasswasher.
Display shows
Actions and what happens
With the door closed:
Press and hold it down, with word FILL appears.
the glasswasher fills the tank after the water in the boiler
has heated up; light L2 shows orange and the boiler
heating element symbol appears on the display.
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
When topping up the tanks, take care not to swap the products; this might damage the
glasswasher and cause malfunctions.
Do not mix different detergents; this would damage the dispenser device.
Industrial glasswasher detergents may cause serious irritation. Comply carefully with the instructions
provided by the detergent producer on the pack.
8.2 Before washing
Use only detergents and rinse aids for industrial glasswashers.
Do not use detergents intended for hand washing.
We recommend the use of Smeg products, specially developed for this glasswasher.
8.3 First use each day (tank and boiler empty)
Indicator lights showing: off; green; orange; flashing.
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CWG 520-530
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 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 offers the last program run.
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CWG 520-530
With the door closed, to change to a fresh program
instead of repeating the last one, press the button.
The programs available are displayed.
If a program has already started, press and hold it
down to interrupt it.
change the program by pressing
Confirm the program start by pressing and holding it
down for 1 second (light L2 changes back to orange).
PROGRAM
TYPE OF DIRT
DURATION (*)
P1
Glasses and cups
Short, about 1’ 30”;
1’ with glassware function active.
P2
Glasses, cups with light dirt
Average, about 2’ 30”;
2’ with glassware function active.
P3
Very dirty glasses and cutlery
Long, about 4’;
5’30” with sani function active.
P4
Depending on the duration set.
As required from 5 to 20'.
8.4 Changing the Program
N.B.:
During heating of the water in the boiler and tank with the cycle running, the tank heating element
and boiler heating element symbols 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.
9 CHOOSING THE PROGRAM
(*) The cycle duration stated above refers to three-phase appliances supplied with hot water at
50°C. If the appliance is supplied with cold water, the cycle duration might increase depending
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CWG 520-530
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 to confirm the program start.
Press and hold it down to select the extra rinse
function then press to confirm the program start.
on the intake water temperature, since the glasswasher is fitted with the HTR system, which
requires set temperature and pressure for rinsing.
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 button. 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
10.2 Selecting the erin “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 glasswasher is connected to cold water, this
function will be less effective
10.3 Selecting the “sanitisation” function (only available in P3)
Increases the program’s washing and rinsing temperatures and duration
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CWG 520-530
Press to select the sanitisation function then to
confirm the program start.
Press the pump-out button and the display shows
“UnLo” and the duration.
N.B.:
- the supplementary function remains selected until the program is changed or the glasswasher is
switched off by pressing the button.
- During execution of the selected program, the display alternates between showing the
supplementary function and the duration.
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 glasswasher is able to perform an automatic cleaning cycle at the end of the day.
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CWG 520-530
Confirm by pressing ; light L2 turns orange.
When pump-out is complete the appliance switches to
“OFF” status.
Never switch the glasswasher off with water in the tank; always pump out first.
Press the pump-out button ; “rEgE” and the duration
appear on the display.
Confirm by pressing ; light L2 turns orange.
When pump-out is complete the appliance switches to
“OFF” status.
After a total pump-out the filters should be cleaned as described above.
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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CWG 520-530
Press the button, and hold it down, until “P0” and the
duration of 1’ appear on the display.
Confirm by pressing ; 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 glasswasher automatically fills the tank
when the door is closed.
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 glasswasher
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 glasswasher 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 “P0”).
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CWG 520-530
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 glasswasher, to ensure that fumes or drops cannot damage the steel surfaces.
IMPORTANT: The glasswasher 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 glasswasher 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 glasswasher is returned to
service, taking care not to swap them over (red hose = detergent, blue hose = rinse aid).
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CWG 520-530
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 glasswasher 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.
WASHING PROGRAM DOES
NOT START
The glasswasher has not
yet finished filling.
Wait for the word FILL to go out.
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.
POOR WASHING RESULTS
Spray arm washing holes
blocked by dirt or
limescale
Remove spray arms and clean them
(10.2 Periodic checks)
Filter fouled
See “Cleaning the filter during the day”
Too little or unsuitable
detergent or rinse aid
Check type and quantity of detergent.
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.
glasses badly arranged
Arrange 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
Limescale in boiler
- Check that nozzles are clean, and 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
Check container of rinse aid and whether it is
suitable for the type of mains water.
Check boiler temperature setting
If the problem persists, contact the after-sales
12 TROUBLESHOOTING
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CWG 520-530
low
service.
DISHES NOT PROPERLY
DRIED
Rinse aid unsuitable or
not being delivered
correctly.
Water hardness above
12°dF or large amounts
of dissolved salts
Check container of rinse aid and whether it
is suitable for the type of mains water.
Restore T Stop ON and/or connect the
appliance to a hot water supply.
If the problem persists, contact the aftersales service.
STAINS ON GLASSES AND
CUTLERY
Drain hose incorrectly
positioned or partially
obstructed.
Check that the glasswasher 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 glasswasher hose and drain
are unobstructed and the drain is not too
high up; see connection diagram.
Err01
The anti-flooding system has been
activated (for the relevant models
only).
Contact the After-Sales Service.
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 AfterSales Service.
Err06
Water pump-out malfunction
(glasswasher 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 “10.2 Periodic checks”. 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
13 MALFUNCTIONS SHOWN ON THE DISPLAY (FOR
THE USER)
The glasswasher is able to identify a number of malfunctions and show them on the display.
If the problem persists after the glasswasher 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)
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CWG 520-530
pressure in intake system, inspect water intake filter and
clean if necessary. If the problem persists, contact the AfterSales 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.
19.390.4918.00
17/12/2013
Manual Ed.
Date
INFORMATION AND AFTER-SALES SERVICE FOR SMEG PRODUCTS
COMMERCIAL GLASSWASHERS
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 whole product offering can be viewed at:
www.smegfoodservice.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 foodservice@smeg.it
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