Metos WD-6 User manual

HOOD TYPE DISHWASHER
WD-6
(Translation of the original documentation)
Read the manual before using the machine!
Installation and user manual
S/N:(En) Valid from: 202202 Rev.: 7.0

WD-6 Rev. 7.0 (202202)
1. General instructions ........................................................................ 1
1.1 Symbols used .................................................................................................. 2
1.2 Machine rating ................................................................................................. 3
1.3 Checking that the machine and manual correspond ........................................ 3
1.4 EU Declaration of Conformity .......................................................................... 4
2. Safety instructions ........................................................................... 5
2.1 General information ......................................................................................... 5
2.2 Transport .......................................................................................................... 6
2.3 Installation ........................................................................................................ 6
2.4 Detergent and drying agent ............................................................................. 6
2.5 Operation ......................................................................................................... 7
2.5.1 High temperatures .................................................................................... 7
2.5.2 Risk of crushing ........................................................................................ 7
2.5.3 Risk of slipping .......................................................................................... 7
2.5.4 Sounds ...................................................................................................... 7
2.6 Cleaning the machine ...................................................................................... 7
3. Installation instructions ................................................................... 8
3.1 General information ......................................................................................... 8
3.2 Requirements for the installation site ............................................................... 8
3.2.1 Lighting ..................................................................................................... 8
3.2.2 Ventilation and ambient temperature ........................................................ 8
3.2.3 Power supply ............................................................................................ 9
3.2.4 Water ........................................................................................................ 9
3.2.5 Drain/waste pipe ....................................................................................... 9
3.2.6 Space for servicing ................................................................................... 9
3.3 Transport and storage .................................................................................... 10
3.3.1 Unpacking ............................................................................................... 10
3.3.2 Recycling ................................................................................................ 10
3.4 Installation ...................................................................................................... 11
3.4.1 Preparing for the installation ................................................................... 11
3.4.2 Positioning the machine .......................................................................... 11

3.5 Connections ................................................................................................... 12
3.5.1 Electrical connection ............................................................................... 13
3.5.2 Water connection, regardless of any options .......................................... 13
3.5.3 Drain/waste pipe ..................................................................................... 14
3.5.4 Ventilation ............................................................................................... 15
3.5.5 Bleeding the hood lifting cylinder (option) ............................................... 15
3.5.6 Detergent and drying agent (possible option) ......................................... 16
3.5.7 Adjustment of hinged basket conveyor ................................................... 20
3.5.8 Condensation unit with heat recovery through the heat recovery unit
(option) ............................................................................................................. 21
3.5.9 Heat exchanger, heat recovery though the wastewater (option) ............ 23
3.5.10 Steam hood with extractor (option) ...................................................... 24
3.6 Installation and connection of auxiliary equipment and options ..................... 25
3.6.1 Sinks and conveyors ............................................................................... 25
3.7 Trial operation ................................................................................................ 28
3.7.1 Start-up schedule .................................................................................... 28
3.8 Documentation ............................................................................................... 29
4. Operating instructions ................................................................... 30
4.1 Before washing .............................................................................................. 31
4.1.1 Machine design ....................................................................................... 31
4.1.2 Preparations before filling ...................................................................... 33
4.1.3 Filling and heating the machine ............................................................. 33
4.2 Washing ......................................................................................................... 34
4.2.1 Positioning of dishware in baskets .......................................................... 34
4.2.2 Selecting a programme ........................................................................... 35
4.2.3 Changing the washing temperature and washing time ........................... 36
4.2.4 Washing ................................................................................................. 38
4.2.5 Checking the wash result ........................................................................ 40
4.2.6 Changing the water ................................................................................. 41
4.3 After use – Cleaning ...................................................................................... 42
4.3.1 Incorrect cleaning methods ..................................................................... 42
4.3.2 Emptying, internal machine rinsing ......................................................... 43
4.3.3 Daily cleaning ......................................................................................... 44
4.3.4 Cleaning each week or as required ........................................................ 45
4.3.5 Cleaning in the event of an alarm or 1 time / year .................................. 45
4.3.6 Operating problems ................................................................................ 46
5. Technical specifications ................................................................ 50
WD-6 Rev. 7.0 (202202)

WD-6 Rev. 7.0 (202202)
General instructions
1
1. General instructions
Read the instructions in this manual carefully as they contain important
information regarding the correct, effective and safe installation, use and
servicing of the machine. Service personnel should have access to all
documentation for the machine.
Keep this manual in a safe place so that it can and should be used by other
operators of the machine.
• The machine is intended to be used for washing dishware that is found in
the general catering and restaurant trade. Other uses are NOT
recommended!
• The machine can be equipped with a number of different options. Certain
options may be standard in a number of countries. Check what your
machine is equipped with.
• Use auxiliary equipment where possible to avoid heavy lifting.
• The machine’s display indicates what the machine is doing. The machine’s
various temperatures and any alarms are also shown.
• The capacity requirements of the machine can be found in the TECHNICAL
DATA chapter.
• The electronics in the machine are RoHS compatible.
Before the machine is started up and used, the following points should be
observed:
• The SAFETY INSTRUCTIONS chapter must be studied carefully before
commissioning the machine.
• Installation of the machine must be performed in accordance with the
requirements and instructions indicated in the INSTALLATION
INSTRUCTIONS and TECHNICAL SPECIFICATIONS chapters.
• Any personnel who may at some point use the machine must be trained in
its operation, use and care.
• The machine should not be used by anyone suffering from a physical or
mental illness.
• A close eye should be kept on any children in the vicinity of the machine to
ensure they do not tamper with it.
• All cover plates must be fitted during use.
The machine and equipment requires an annual service. Contact one of our
authorised and trained service companies for such a service.

WD-6 Rev. 7.0 (202202)
General instructions
2
1.1 Symbols used
This symbol warns of situations where a safety risk may arise. The instructions
given should be followed in order to prevent injury and dangerous situations.
This symbol on a machine part warns of electrical equipment. The machine must
be entirely non-live during servicing, turn off the power at the power switch and if
required, the switch should be locked to prevent unintentional operation. The
component may only be removed by a qualified electrician.
This symbol warns that the machine’s electronics are sensitive to electrostatic
discharge (ESD), which is why a static electricity wristband must be used when
handling the electronics at all times.
This symbol explains the right way to perform a task in order to prevent poor
results and/or damage to the machine.
This symbol identifies recommendations and hints to help you get the best results
when washing, to increase the machine’s lifespan and reduce the risk of
emergency shutdown.
This symbol explains the importance of careful and regular cleaning of the
machine to meet hygiene requirements.
This symbol warns of the importance to read the manual before using the
machine.
This symbol warns that local regulations must be followed for recycling of
packaging etc. as well as the destruction of the machine.
This symbol shows where any earth cable for potential equalisation can be
connected. The earth bolt is placed on the machine’s stand.

WD-6 Rev. 7.0 (202202)
General instructions
3
1.2 Machine rating
The machine has two rating plates, one of which is placed at the bottom of one
side of the machine and the other in the electrical cabinet. The technical
information on the plates is also included on the machine's wiring diagram. The
various rating fields show:
1. Machine type
2. Machine serial number
3. Year of manufacture
4. Enclosure protection class
5. Voltage
6. Number of phases with or without neutral
7. Frequency
8. Main fuse
9. Motor output
10. Electrical heating output
11. Max. output
1.3 Checking that the machine and manual correspond
Check that the type description on the rating plate corresponds with the type
description on manual cover page. If manuals are missing, it is possible to order
new ones from the manufacturer or the local distributor. When ordering new
manuals, it is important to quote the machine number found on the rating plate.
S/N:
Model:
IP V
Mårdvägen 4, SE-352 45 VÄXJÖ, SWEDEN
!
M
1
2
~Hz A
kWkW
kW
3
69
4
75 8
0
11
1

WD-6 Rev. 7.0 (202202)
General instructions
4
1.4 EU Declaration of Conformity
A so-called EU Declaration of Conformity is provided on delivery of the machine.
1. Contact details of the manufacturer (Wexiödisk AB, Mårdvägen 4, SE-
35245 Växjö, SWEDEN, Tel.: [phone], Fax: [phone], E-
mail: [e-mail]).
2. Representatives of Wexiödisk AB.
3. Person responsible for the product’s documentation.
4. Year of manufacture of the product.
5. The EU Directives with applicable provisions to which all the machines,
special machines and accessories comply.
6. Harmonised standards for the Directives specified, and which the
machines, special machines and accessories meet, wherever relevant.
7. Model designation and serial number of the machines, special machines
and accessories the document applies to.
8. Place and date with signature and name (in block letters) of the person
responsible for ensuring compliance with legislation and regulations.
CE_16_2
1
2
3
5
6
7
7
7
8
6
6
6
4

WD-6 Rev. 7.0 (202202)
Safety instructions
5
2. Safety instructions
Read the chapter GENERAL INSTRUCTIONS carefully before starting work.
2.1 General information
The machine is CE marked, which means that it complies with the requirements
of the EU Machinery Directive with regard to product safety. Product safety
means that the design of the machine will prevent personal injury or damage to
property. The CE mark is only valid for an unmodified machine. Any damage to
the machine arising from failure to follow the instructions will invalidate the
supplier’s warranty and product liability.
Installation, repairs and servicing must be performed by an authorised engineer
in accordance with local and national rules in effect for such work with water and
drainage systems, electricity, ventilation and steam. To ensure electrical safety,
components must only be tested when installed in their normal place in the
machine. We recommend that the work is performed by the manufacturer or one
of the manufacturer’s authorised service companies.
To further improve safety during installation, operation and servicing, the operator
and the personnel responsible for installing and servicing the machine should
read the safety instructions carefully.
The machine’s electronics are sensitive to electrostatic discharge (ESD), which is
why a static electricity wristband must be used when handling the electronics at
all times.
Before the machine enters service, ensure that the personnel are given the
necessary training in handling and looking after the machine.

WD-6 Rev. 7.0 (202202)
Safety instructions
6
In order to avoid dangerous situations, the following must be followed:
• Switch off the machine immediately in the event of failure or malfunction.
• Make sure the machine is non-live before removing the cover plate. Turn
off the power using the power switch. If required, the switch must be locked
to prevent unintentional operation.
• Shut off the tap for incoming water and drain the machine’s tank(s) before
starting work. Let the machine cool down as pipes for water, washing
pumps, booster heaters and valves become very hot when the machine is
in operation.
• The machine and equipment requires an annual service. The machine
should be serviced by a person authorised or trained to do so by us. Use
original spare parts.
• Warranty repairs must be performed by an authorised company. Contact
an authorised service company to draw up a programme of preventive care
and maintenance. For authorised service companies, please see
www.wexiodisk.com or contact Wexiödisk AB.
• The regular checks described in the manual must be carried out in
accordance with the instructions.
2.2 Transport
Handle the machine with care during unloading and transport; there is a risk of it
tipping over. Never lift or move the machine without using the wooden packaging
to support the stand.
2.3 Installation
• The machine is designed for quick electrical installation.
• The machine must be connected to a lockable power switch.
• Make sure that the mains voltage is the same as that indicated on the
machine’s rating plate.
For increased safety, it is recommended to equip the installation with a ground
fault circuit breaker.
2.4 Detergent and drying agent
Be aware of the risks involved in handling detergents and drying agents.
Protective gloves and safety glasses should be used when handling, and an
eyebath should be within easy access. Read the warning text on the detergent
and drying agent containers as well as the detergent supplier’s instructions.

WD-6 Rev. 7.0 (202202)
Safety instructions
7
2.5 Operation
Be very careful around the machine when it is in operation.
2.5.1 High temperatures
• The temperature of the washing and rinsing water is 60°C and 85°C. Do
not open the machine until the washing and rinsing phases have finished.
The steam that comes out of the machine after the wash has been
completed is hot.
• Avoid touching hot pipes and booster heaters. The machine’s outer jacket
can also become hot during operation.
2.5.2 Risk of crushing
The machine, and any equipment, has moving parts before, during and after
washing. Be careful therefore to avoid crushing injuries. In connection with
service or repairs that require the hood to be open, it must be secured by means
of a prop for example.
2.5.3 Risk of slipping
The floor should be kept clean and dry to eliminate any risk of slipping. Mop up
any water and leftover food that has been spilt.
2.5.4 Sounds
The machine is not silent during operation, see TECHNICAL SPECIFICATIONS.
Hearing protection may therefore need to be used.
2.6 Cleaning the machine
The water in the tank has a temperature of approximately 60°C and contains
detergent. Be careful when draining and cleaning the wash tank. Wear protective
gloves and safety glasses and have an eyebath within easy access.

WD-6 Rev. 7.0 (202202)
Installation instructions
8
3. Installation instructions
Read the chapters GENERAL INSTRUCTIONS and SAFETY INSTRUCTIONS
carefully before starting work.
3.1 General information
Read these instructions carefully, as they contain important information regarding
the correct installation method.
• The instructions should be used together with the machine’s wiring
diagram. These can be found in the machine’s electrical cabinet.
• The machine can be equipped with a number of different options. Certain
options may be standard in a number of countries. Check what your
machine is equipped with.
• If holes need to be drilled in the machine, the holes must be fitted with an
edge strip or similar protection.
• Software version 4.7 or later should be used to connect a WD-PRM 6 to a
WD-6. If you are using an earlier software version this should be updated.
The level pipe in the dishwasher has been replaced with a bottom filter.
3.2 Requirements for the installation site
3.2.1 Lighting
In order to ensure the best possible working conditions during installation,
operation, servicing and maintenance, make sure that the machine is installed in
a well-lit room.
3.2.2 Ventilation and ambient temperature
The machine is intended to be used in an indoor environment at normal room
temperature. The machine produces heat and steam when in operation. In order
to ensure the best possible working conditions, a certain air renewal rate is
required in the dishwashing room. The ventilation requirements for the
dishwashing room are to be dimensioned on the basis of the applicable
standards.

WD-6 Rev. 7.0 (202202)
Installation instructions
9
3.2.3 Power supply
Power supply connections are made by qualified personnel in a way that complies
with local and national regulations. The machine’s capacity requirements are
stipulated in TECHNICAL SPECIFICATIONS.
3.2.4 Water
Water connections are made by qualified personnel in a way that complies with
local and national regulations. The machine’s capacity requirements are
stipulated in TECHNICAL SPECIFICATIONS.
3.2.5 Drain/waste pipe
There must be a drain pipe with an effective trap for the machine’s waste water
and for water used for rinse cleaning. The machine’s capacity requirements for
drainage are stipulated in TECHNICAL SPECIFICATIONS.
3.2.6 Space for servicing
A 1-metre area should be left clear in front of the machine for servicing purposes.
Depending on if the machine has different accessories, there may also be such a
requirement at the infeed and outfeed ends as well as above the machine.

WD-6 Rev. 7.0 (202202)
Installation instructions
10
3.3 Transport and storage
Always transport the machine in an upright position.
Take care during transport, as there is a risk of tipping. N.B.! The machine must
not be transported without a pallet or other support. Some form of support beam
must always be used along the sides of the machine during transport. Otherwise
the machine may become damaged. When transporting the machine without a
normal wooden pallet, always check that none of the components underneath the
machine can be damaged.
A=Pumps
B=Spacers
If the machine is not being installed immediately, it must be stored in a frost-free
area where the air is dry.
3.3.1 Unpacking
Check that all parts have been delivered by comparing them with the delivery
note.
Remove the packing material. Inspect the machine for any transport damage.
3.3.2 Recycling
Packaging must be sent for destruction or recycling in accordance with local
regulations.
The machine is manufactured from stainless steel plate, among other things, and
also contains electronic components. Recycling of the appliance when its
economic lifetime has been reached must be carried out in accordance with
current rules and regulations.
A AB B

WD-6 Rev. 7.0 (202202)
Installation instructions
11
3.4 Installation
3.4.1 Preparing for the installation
Check that there is sufficient room for the machine at the installation location.
• Check that correct connections are available for water, electricity, drainage
and possibly steam at the installation location. See TECHNICAL
SPECIFICATIONS.
• Check that the overheating protection device is reset.
3.4.2 Positioning the machine
Check the following points before the machine is placed in position:
• Check that the fuse for the machine at the site is off, blocked and that
outgoing electrical circuits from the machine are non-live.
• Remove the protective plastic on the sides which are to be stood against a
wall.
• The distance between the wall and machine should be at least 20 mm.
• If the machine is to be corner-loaded, it must be positioned with the control
panel furthest away from the wall.
Place the machine in position and check that it, and any accessories, are
horizontally level. Adjust the height with the legs.
Check with a spirit level that is standing level. Place the spirit level on the join
between the machine tank and the upper part. Once the machine has been filled
with water, do another check to make sure the machine is horizontal.
Check using a spirit level that the machine is standing level
6,7_Inst_plac

WD-6 Rev. 7.0 (202202)
Installation instructions
12
3.5 Connections
• A= Steam hood with extractor (option)
• B= Condensation unit with heat recovery through the heat recovery unit
(option)
• C= Heat exchanger, heat recovery though the wastewater (option)
AB
C
4
5
1
3
2 6
7
1
2
63
3
8
1
2
6
(301860_R3)
WD67_02_r2
min.20
min.20

WD-6 Rev. 7.0 (202202)
Installation instructions
13
1. Electrical connection
2. Water connection
3. Drain/waste pipe connection
4. Plugged hole for detergent hose
5. Bleed for lifting cylinder (on machines with an automatic hood)
6. Water pressure outlet for detergent dosage
7. Alternative water connection from below
8. Drain connection (option)
In the following chapter, figures are given in brackets to clarify what needs to be
done. These numbers refer to image and list above.
3.5.1 Electrical connection
Information about electrical connections is available on the machine’s wiring
diagram which is provided on delivery. Store the diagrams in the plastic pocket,
located in the electrical cabinet, even after installation.
• The machine is designed for quick electrical installation.
• The machine must be connected to a lockable power switch. This should
be placed on a wall, well-protected from water and from the steam which
escapes when the machine is opened. The machine is supplied with the
electrical cable connected (1).
After completing the installation, switch on the main switch and all circuit
breakers.
3.5.2 Water connection, regardless of any options
• A shut-off cock must be installed on the incoming pipe.
• It is important that the water supply has sufficient pressure to ensure the
correct flow of water to the machine. The required water flow and pressure
can be found in the TECHNICAL SPECIFICATIONS. If the water pressure
is too low, a booster pump must be fitted.
The water pipe is connected at (2) or at (7). If the machine is connected with a
hose, this should be steel braided and have an internal diameter of at least 12
mm.
The hot water connection on the machine is fitted with a filter.
As the machine is fitted with a “Break Tank”, the connection is fitted with a filter
and non-return valve.

WD-6 Rev. 7.0 (202202)
Installation instructions
14
3.5.3 Drain/waste pipe
The waste water system connected to (3) should consist of a 50 mm metal pipe
that will withstand mechanical impacts. The drain must run to a floor drain, where
its opening must be above the water level.
Ensure that the drain connection is kept in place by using e.g. cable ties in the
designated areas.
Machines with a drain pump (option)
Drain hose (A) consists of a spiral hose and is connected to the machine at (3)
and to the floor drain (B) as per one of the alternatives in the illustration.
Machines connected to WD-PRM6/7 (option)
See also “Installation and user manual” for WD-PRM6/7.
avlopp_dp_6
A
min. 25mm
B
min. 25mm
3
3

WD-6 Rev. 7.0 (202202)
Installation instructions
15
3.5.4 Ventilation
The machine’s heat load for the room is stipulated in TECHNICAL
SPECIFICATIONS.
3.5.5 Bleeding the hood lifting cylinder (option)
1. Close the hood.
2. Loosen the hose connection of the first air cylinder approx. 2-3 turns using
a 13 mm box wrench.
3. Keep the hood in the closed position. Press the up button. Check that only
water and no air comes out of the hose connection. Otherwise repeat the
procedure.
4. Tighten the hose connection with the hood still in the lower position.
5. Repeat the same procedure with the second cylinder.

WD-6 Rev. 7.0 (202202)
Installation instructions
16
3.5.6 Detergent and drying agent (possible option)
• Check what your machine is equipped with, which depends on the model,
machine type and country.
• Use the same make and type of detergent and drying agent.
• With machines connected to cold water, the water pipe temperature may
be too low for use of powder or paste type detergents.
• If liquid detergent is used together with Wexiödisk’s detergent pump, the
detergent must be placed under the machine’s tank level.
The detergent (A) is positioned below the plugged connection for the detergent
hose (B).
The use of our shelf (C) would be appropriate WD203.0663
• There is a plugged hole for a detergent hose on the back and end of the
machine (4).
• The detergent hose is connected to the pipe (A) at the top of the chemical
washing tank on the right-hand side (see the figure below). There is a
connection nipple in the pipe (B).
• If detergent paste is being used, the connection nipple must be removed
and the hose connected directly to the pipe (A).
• If liquid detergent is used, the nipple must be left in the pipe. Drill a hole
through the nipple and connect the hose to the nipple.
• The measuring cell for measuring the concentration of detergent in the
washing water must be put in the bottom of the tank. On the inside bottom
of the tank next to the heating element, the letter “C” is stamped into the
metal to mark where the hole should be drilled.
• The water outlet for detergent (6) is on the incoming water pipe (2).