Metos WD-6E User manual

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INSULATED MODEL
STANDARD MODEL
TYPE: WD-6E
Accessories
STEAM HOOD
CUT-OFF COCK
NON-RETURN VALVE
VACUUM VALVE
BOOSTER PUMP
DRAIN PUMP
AUTOMATION TO EVALUATION FAN
DETERGENT DISPENSER
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S/N:→Rev.: 2.2

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Dear Customer,
Congratulations on deciding to choose a Metos equipment for your kitchen activities. You
made an excellent choice. We will do our best to makealso you a satisfied Metos custom-
er like thousands and thousands of others all over the world.
Please read this manual carefully. You will learn many right, safe and efficient working
methods in order to get the best possible benefit from the equipment. The instructions and
hints in this manual will give you a quick and easy start in using this equipment. You will
note very quickly how nice it is to use the Metos equipment.
All rights are reserved for technical changes.
You will find all the main technical data on the rating plate fixed to the equipment. When
you need service or technical help, please let us know the serial number of the equipment.
This will make it easier to provide you with the correct service. Please write the contact
information of your local Metos service in advance on the lines below.
METOS TEAM
Metos service phone number:...............................................................................................
Contact person:....................................................................................................................

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1.1 Symbols used in the manual .......................................................................................... 7
1.2 Symbols used on the appliance ...................................................................................... 7
1.3 Checking the relation of the appliance and the manual ................................................. 7
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2.1 Safety instructions in case of malfunction ..................................................................... 8
2.2 Disposal of the appliance ............................................................................................... 8
2.3 Installation ..................................................................................................................... 8
2.4 Detergent and rinse aid .................................................................................................. 8
2.5 Washing and cleaning of the machine ........................................................................... 9
2.5.1 High pressure cleaning of the dishwasher ............................................................. 9
2.5.2 Inside of the machine ............................................................................................. 9
2.5.3 Outside of the machine .......................................................................................... 9
2.6 Floors ............................................................................................................................. 9
2.7 Repairs and maintenance of the machine ...................................................................... 9
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3.1 Application of the appliance ........................................................................................ 10
3.1.1 Prohibited use/Use for other purposes ................................................................. 10
3.2 Construction ............................................................................................................... 11
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4.1 General ........................................................................................................................ 12
4.2 Operation procedures ................................................................................................... 12
4.2.1 To fill with water ................................................................................................ 12
4.2.2 Choice of wash programme ................................................................................ 12
4.2.3 Washing .............................................................................................................. 12
4.2.4 Hygiene warranty ................................................................................................ 13
4.3 After operation ............................................................................................................. 13
4.3.1 Emptying, internal machine rinse ....................................................................... 13
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5.1 General ........................................................................................................................ 14
5.2 Operating conditions ................................................................................................... 14
5.2.1 Lighting ................................................................................................................ 14
5.2.2 Ventilation ........................................................................................................... 14
5.3 Installation procedures ................................................................................................. 14
5.3.1 Electrical connections .......................................................................................... 14

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5.3.2 Water connections ............................................................................................... 15
5.3.3 Drain connection ................................................................................................. 15
5.4 After installation .......................................................................................................... 15
5.4.1 First-run ............................................................................................................... 15
5.5 Staff training ................................................................................................................ 16
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6.1 Filling, rinsing ............................................................................................................. 17
6.1.1 Filling time, final rinse flow ............................................................................... 17
6.2 Setting the rinse aid dosing pump ............................................................................... 17
6.3 Adjustment of reference values .................................................................................. 18
6.3.1 Adjustment of reference values, diagnostic texts ................................................ 18
6.3.2 Function change-over .......................................................................................... 19
6.3.3 Reference values .................................................................................................. 20
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8.1 Voltage codes .............................................................................................................. 27
8.2 Product codes ............................................................................................................... 27
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 *HQHUDO
Carefully read the instructions in this manual as they contain important information re-
garding proper, efficient and safe installation, use and maintenance of the appliance.
Keep this manual in a safe place for eventual use by other operators of the appliance.
The installation of this appliance must be carried out in accordance with the manufactur-
er’s instructions and following local regulations. The connection of the appliance to the
electric and water supply must be carried out by qualified persons only.
Persons using this appliance should be specifically trained in its operation.
Switch off the appliance in case of failure or malfunction. The periodical function checks
requested in the manual must be carried out according to the instructions. Have the appli-
ance serviced by a technically qualified person authorized by the manufacturer and using
original spare parts.
Not complying with the above may put the safety of the appliance in danger.
 6\PEROVXVHGLQWKHPDQXDO
This symbol informs about a situation where a safety risk might be at hand. Given instruc-
tions are mandatory in order to prevent injury.
This symbol informs about the right way to perform in order to prevent bad results, appli-
ance damages or hazardous situations.
This symbol informs about recommendations and hints that help to get the best perform-
ance out of the appliance.
 6\PEROVXVHGRQWKHDSSOLDQFH
This symbol on a part informs about electrical terminals behind the part. The removal of
the part must be carried out by qualified persons only.
 &KHFNLQJWKHUHODWLRQRIWKHDSSOLDQFHDQGWKHPDQXDO
The rating plate of the appliance indicates the serial number of the appliance. If the man-
uals are missing, it is possible to order new ones from the manufacturer or the local rep-
resentative. When ordering new manuals it is essential to quote the serial number shown
on the rating plate.

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Check the following:
•Has the appliance been used according to instructions?
•Are all possibly removable parts refitted?
•Is the main switch in the ON position?
•Are the circuit breakers (fuses) of the appliance in the electrical supply central in
working order? Ask an authorized person to check the circuit breakers.
•If this does not help, contact an authorized service person.
 'LVSRVDORIWKHDSSOLDQFH
The disposal of the appliance when its economical lifetime has been reached must be car-
ried out in accordance with local rules and regulations. Contact professional personnel
specializing in recycling.
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Electrical and water connections must be carried out by authorized personnel only.
Make sure that the mains voltage is the same as that indicated on the data plate of the ap-
pliance. The machine shall be connected to the main switch.
Water connection must be carried out in a manner that complies with the regulations of
the local water supply authority. Check the tightness at the connection point before start-
ing up. See also “Water connections”in Chapter “Installation”.
 'HWHUJHQWDQGULQVHDLG
Only detergent and rinse aid which are ment for dishwashing machines are allowed. Hand
dishwashing detergent must not be used because it results in excessive foam and poor
dishwashing result. Contact your dishwashing detergent supplier for the choice of a suit-
able detergent and rinse aid. Pay attention to the risks involved in the handling of machine
dishwashing detergents and rinse aids (see safety instructions of the detergent).
Protective gloves and coggles should be used when handling machine dishwashing deter-
gent and rinse aid. Read warning text on the detergent and rinse aid container.

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The machine performs final rinse with 85°C hot water. The hood must not be opened
until the final rinse is finished.
The temperature of the dishwater in the tank is approx. 60°C and mixed with detergent.
Be careful when emptying and cleaning the machine. Use protective gloves.
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High pressure cleaning of the machine is forbidden.
In order to satisfy official requirements concerning the safety standards of Metos dish-
washers, electrical components of approved sealing classes are used.
There is no sealing class capable of withstanding high pressure.
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Don’t use steelwool and for cleaning of the machine.
Don’t use foaming detergents for cleaning the machine.
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It is recommended to use a damp cloth only.
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When rinsing floors, water can splash up under the machine and damage the electrical
components. These have not been designed to withstand rinsing with water. Do not spray
the floor closer than 1 meter from the dishwasher. Special protecting covers are available
for high pressure washers to prevent splash.
NOTE! Splash from underneath can also arise when using ordinary water hoses.
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Switch off the power before removing the front panel. Avoid contact with hot pipes and
booster heaters.

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The machine is intended for washing items used for the preparation and serving of food,
including various types of items used for the storage of food. Washing must therefore be
carried out with a machine dishwashing detergent and rinse aid suitable for this purpose.
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Use of the machine for applications other than what it was designed for must always be
checked in advance with the manufacturer.

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1. Program indicator
2. Temperature display
3. Tank temperature indicator (Flashes when tank temperature is below 50°C
or when water level is low)
4.. Final rinse indicator (Flashes when rinse temperature is lower than refer-
ence value)
5. Program selection
6. On/Off
7. Rinse nozzle
8. Wash nozzle
9. Rinse and wash arms
10. Strainers
11. Overflow pipe
12. Drain strainer (only in types with drain pump)
13. Pump strainer

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Before using the dishwasher, see also “After installation”in Chapter “Installation”.
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 7RILOOZLWKZDWHU
•Check that the machine is cleaned and that no soil exists in the nozzles of the wash
arms.
•Put the drain strainer (12, only in types with drain pump), overflow pipe (11) and
tank strainers (10) in place. Check the amount of detergent and rinse aid.
•Press ‘0/1’. Close the hood. The display (2) shows the water temperature. When
the temperature hasreached 85°C, the filling of water starts. The filling time varies
from 3 to 16 minutes depending on the temperature of the incoming water. The
tank is filled when the water level indicator (3) is lit. At the same time the washing
temperature is displayed on the display (2).
•Correct working temperatures are: wash = 60°C, rinse = 85°C. To check the rinse
temperature: Keep 'P1' pressed for a couple of seconds. The rinse temperature is
displayed on the display (2).
 &KRLFHRIZDVKSURJUDPPH
•Choose wash programme P1, P2 or P3. Programme P3 is selected by pressing P1
and P2 simultaneously. P1 = Slightly dirty goods, P2 = Normal washing, P3 = Ex-
tremely dirty goods.
•P0 = Pause position. This is used during longer breaks. The hood must be closed.
When switching to P0, press the program button which is shown on display (2).
 :DVKLQJ
•Place the goods to be washed in the rack. Place the dishes correctly in the rack:
deep plates in the rack for deep plates, cups in the cup racks etc. Rinse with a hand
sprayer to remove large food scraps.
•Push the rack into the machine.The washing cycle starts whenthe hood is lowered.
If the hood is lifted during the washing cycle, the washing stops.

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•When the dishes are normally soiled, the dish water should be replaced (emptying-
filling) after approx. 50 washing cycles.
Detergent for manual dishwashing must not be used inthe machine or forsoaking purpos-
es as it builds foam and gives poorer wash results.
 +\JLHQHZDUUDQW\
If the right final rinse temperature hasnot been reached, the signal light(4) is blinking and
the machine goes on washing until the temperature setting value has been reached. In this
case the machine can be forced to rinse by pressing the wash program push button. The
tank temperature signal light is blinking if the temperature is below 50 degrees or the wa-
ter level is too low.
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  (PSW\LQJLQWHUQDOPDFKLQHULQVH
•Press ‘0/1’. The display shows for approx. 5 sec. the number of washed racks.
Clean the tank strainers (10). Empty the tank by pulling the overflow pipe (11) up-
wards, lean it against the frontside of the tank and release it.
•If the machine is equipped with the drain pump, push ‘P1’. EP is shown on the dis-
play and the drain pump starts. The drain pump stops automatically after 2 min-
utes.
•When the tank is empty, remove and clean the overflow pipe and the drain strainer
(12, only in types with drain pump).
•Close the hood. Press ‘P2’. ‘EP’is shown on the display and the internal rinse
starts. The hood may be opened after approx. 30 sec.
•Check that the wash and rinse nozzles are clean. Leave the hood lifted.
•Clean the outside of the machine with damp cloth.
Do not use steel wool when cleaning. Steel wool causes rust on the machine.

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See installation drawing in Chapter “Technical specifications”.
When connecting benches, roller conveyorsetc., it is not allowed to make any holes in the
machine!
The 'CE'-mark is only valid for machine in original design.
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 /LJKWLQJ
In order to ensure the best possible working conditions during the operation of the ma-
chine and during service and maintenance, make sure that the machine is placed in a well-
lit room.
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A satisfactory working environment requires ventilation in the dishwashing room. The
recommendation of ventilation is 600m3/h.
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See details in the drawings of installation instructions and technical specifications tables.
The electrical supply for the machine has to be equipped with circuit breaker. The length
of supply cable has to be such that the machine can be easily moved for the service.
The electrical circuit drawing is inside of the machine, behind the front panel.

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See the installation drawing and technical specifications.
Make sure that the machine stands horizontally. Adjust, if needed, with the aid of the legs
of the machine.The connections should be equipped with a vacuum valve (11), non-return
valve (12) and stop cock (13). The connections have built-in filters.
The warm water connection is connected to (3). (This is also valid for cold water connect-
ed machines).
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See the installation drawing and technical specifications.
The drain system is connected to (2). The drain and outlet hose (6) for the hood-lift (WD-
6EA) are connected to the sewer, where they should end above water level.
The drain pipe is connected to (4) in the machine with the drain pump. The hose is con-
nected to the sink with copper pipe (d 22 mm) and it has to be ended at least 25 mm above
the sink edge.
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Check the following points before using the machine
•the dishwasher has been installed horizontally according to the installation in-
structions.
•all the connections (electricity, water) are tight and correctly made.
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Check that the strainers and the overflow pipe are in their correct positions. Check also
that the detergent and rinse aid hoses are connected to their respective containers. The
thicker hose is connected to the detergent container. Open the stop cock.
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The rotation direction can be seen by checking the shaft between the pump and motor,
while the contactor is pressed for a short time. If the motor does not rotate in the direction
indicated by the rotation arrow, alter two of the incoming phases.

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When the dishwasher is in operation, the washing temperature should be approx. 60-65°C
and the rinsing temperature approx. 80-85°C.
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Check that themagnetic switch stops the machine during both the wash and rinse cycle
when the hood is lifted.
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Before the machine is used make sure that the personnel receive the requisite information
for handling and maintenance!

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Check the filling time of the machine. The filling time should be approx. 2,7 min. and the
final rinse flow approx. 18 l/min. Adjust the ball valve if needed. To check the final rinse
flow: hold 0/1 pushed down. The final rinse flow is shown as litres/minute.
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1. Rinse aid container
2. Adjusting screw of the rinse aid dispenser
3. Boiler
4. Rinse
•Set the thinner hose into the rinse aid container.
•Check that the adjusting screw on the pump is completely opened.
•Pump so much rinse aid that it reaches the pump (pumping is carried out by press-
ing the adjusting screw in and out). Pump after this 10-15 times.
•Adjust the quantity of rinse aid by turning the adjusting screw. The basic setting is
about 10 cm measured from the pipe. The amount of rinse aid can be regulated be-
tween 0...4 cm3, which is equivalent to 0...30 cm drawn into the suction tube. The
amount ofrinse aid can be reduced by screwing clockwise and increased by screw-
ing counter clockwise.

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1. Printed circuit card
2. DIP change-over switches
3. Diagnostic button
4. Reference value adjustment button
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•Open the hood and press the ‘0/1’-button on the panel.
•Press the button (3) for approx. 3 sec. Text no. 01 will be displayed on the panel
on the left display. The actual value is displayed to the right. (See table).
•The texts are divided into four tables. It is possible to change quickly between the
first rows of each table. When text no. 01 in table 1 is displayed, press the ‘+’-
button. Now text no. 20 in table 2 is displayed on the panel. Another press on the
‘+’-button displays text no. 30 in table 3, etc.
•The button (3) allows the operator to flick forward through the texts in each table.
•The reference values may be adjusted by pressing ‘+’- or ‘-’-buttons (4). The di-
agnostic texts and reference values are shown in the tables.
•If the diagnostic function is not to be activated further, press the button (3) for ap-
prox. 3 sec.
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There are 4 DIP change-over switches (2) on the printed circuit card. Depending on the
machine type, the change-over switches should be in the following positions:
DIP change-over switch 1 in ‘ON’-position = Hot water connected machine. ‘OFF’-po-
sition = For filling of cold water.
DIP change-over switch 2 in ’ON’-position = Machine with automatic hood-lifting device
(WD-6EA and WD-7EH). ‘OFF’-position = No automatic hood-lifting device.
DIP change-over switch 3 in ‘ON’-position = Hood with holding position. (Applies to
WD-6EA and WD-7EH). Once the rinse cycle is complete, the hood is opened to a so-
called holding position. It remains in this position for approx. 6 sec. before opening com-
pletely. ‘OFF’-position = Hood without holding position.
DIP change-over switch 4 = Vacant.

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*Norway 16 sec. An increase in rinsing time gives an equivalent increasein the total wash
time.
Diagnostics:
* 0 = Deactivated, 1 = Activated
Left display
Text no. Refers to Right display Reference value Setting area
01 Actual value, boiler -
02 Actual value, tank -
03 Reference value, tank 64°C30-85°C
04 Reference value boiler, program 1 85°C30-95°C
05 Reference value boiler, program 2 85°C30-95°C
06 Reference value boiler, program 3 85°C30-95°C
07 Washing time, program 1 1,0 min. 0-9,4 min.
08 Washing time, program 2 1,5 min. 0,5-9,4 min.
09 Washing time, program 3 3,0 min. 0,5-9,4 min.
10 Rinse time, program 1 13 sec.* 5-30 sec.
11 Rinse time, program 2 13 sec.* 5-30 sec.
12 Rinse time, program 3 13 sec.* 5-30 sec.
13 Dosage time for detergent 2,0 sec. 0-9,9 sec.
14 Delayed running time for booster pump 10 sec. 1-20 sec.
Left display
Text no. Refers to Right display
20 Hood switch B1 0 or 1*
21 Level guard P1 0 or 1*
22 Additional input B2 0 or 1*
23 DIP change-over switch D1 0 or 1*
24 DIP change-over switch D2 0 or 1*
25 DIP change-over switch D3 0 or 1*
26 DIP change-over switch D4 0 or 1*
30 Filled boiler 0 or 1*
31 Dishwasher with older panel 0 or 1*
32 Dishwasher WD-7E/7EH 1*