Wexiodisk WD-90 DUO User manual

COMBINATION DISHWASHER
WD-90 DUO
(translation of the original documentation)
Read the manual before using the machine!
Installation and user manual
S/N: (En) Valid from: 202204 Rev.: 2.0

1. General information ......................................................................... 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 .......................................................................................... 8
2.5.4 Sounds ...................................................................................................... 8
2.6 Cleaning the machine ...................................................................................... 8
3. Installation instructions ................................................................... 9
3.1 General information ......................................................................................... 9
3.1.1 Rust on industrial dishwashers ............................................................... 10
3.2 Requirements for the installation site ............................................................. 11
3.2.1 Lighting ................................................................................................... 11
3.2.2 Ventilation and ambient temperature ...................................................... 11
3.2.3 Power supply .......................................................................................... 11
3.2.4 Water ...................................................................................................... 11
3.2.5 Drain/waste pipe ..................................................................................... 11
3.2.6 Space for servicing ................................................................................. 12
3.3 Transport and storage .................................................................................... 13
3.3.1 Unpacking ............................................................................................... 13
3.3.2 Recycling ................................................................................................ 13
3.4 Installation ...................................................................................................... 14
3.4.1 Preparing for the installation ................................................................... 14
3.4.2 Positioning the machine .......................................................................... 15
3.4.3 Fitting the condensation unit ................................................................... 16
WD-90 DUO Rev. 2.0 (202204)

3.5 Connections ................................................................................................... 18
3.5.1 Standard machine ................................................................................... 18
3.5.2 Machine with condensing unit (option) ................................................... 19
3.5.3 Sink connection ...................................................................................... 20
3.5.4 Electrical connection ............................................................................... 20
3.5.5 Water connection, regardless of any options .......................................... 21
3.5.6 Drain/waste pipe connection ................................................................... 21
3.5.7 Installing detergent and drying agent equipment (option) ....................... 22
3.5.8 Bleeding the booster pump ..................................................................... 25
3.5.9 Bleeding the hood lifting cylinder ............................................................ 26
3.6 Installation of options ..................................................................................... 27
3.6.1 Folding tables ......................................................................................... 27
3.6.2 Potwash sink (WD209.7270) .................................................................. 37
3.7 Trial operation ................................................................................................ 42
3.7.1 Start-up schedule .................................................................................... 42
3.8 Documentation ............................................................................................... 43
4. Operating instructions ................................................................... 44
4.1 Before washing .............................................................................................. 45
4.1.1 Machine design ....................................................................................... 45
4.1.2 Preparations before filling ...................................................................... 50
4.1.3 Filling and heating the machine .............................................................. 51
4.1.4 Before washing, regardless of program .................................................. 52
4.1.5 Positioning of items in baskets ............................................................... 56
4.2 Washing ......................................................................................................... 60
4.2.1 Selecting a program ................................................................................ 60
4.2.2 Starting washing ..................................................................................... 64
4.2.3 Interrupting a wash program and stopping the machine ......................... 64
4.2.4 Checking the wash result ........................................................................ 65
4.2.5 Changing the water ................................................................................. 67
4.3 After use ......................................................................................................... 70
4.3.1 Incorrect cleaning methods ..................................................................... 70
4.3.2 Care and maintenance ........................................................................... 71
4.3.3 Draining and cleaning the machine ........................................................ 72
4.3.4 Granules ................................................................................................. 79
4.3.5 Checking the hood’s anti-crushing system ............................................. 81
4.3.6 Longer periods without use ..................................................................... 82
4.3.7 Operating problems ................................................................................ 83
5. Technical specifications ................................................................ 90
WD-90 DUO Rev. 2.0 (202204)

WD-90 DUO Rev. 2.0 (202204)
General information
1
1. General information
Read the instructions in this manual carefully as they contain important informa-
tion regarding the correct, effective and safe installation, use and servicing of the
machine. Service personnel should have access to all documentation for the ma-
chine.
Keep this manual in a safe place so that it can and should be used by other op-
erators 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 recom-
mended!
• The machine can be equipped with a number of different options. Certain
options may be standard in a number of countries. Check what your ma-
chine 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 ob-
served:
• The SAFETY INSTRUCTIONS chapter must be studied carefully before
commissioning the machine.
• Installation of the machine must be performed in accordance with the re-
quirements and instructions indicated in the INSTALLATION INSTRUC-
TIONS 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 au-
thorised and trained service companies for such a service.

WD-90 DUO Rev. 2.0 (202204)
General information
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 re-
sults 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 emer-
gency shutdown.
This symbol explains the importance of careful and regular cleaning of the ma-
chine to meet hygiene requirements.
This symbol warns of the importance to read the manual before using the ma-
chine.
This symbol warns that local regulations must be followed for recycling of pack-
aging etc. as well as the destruction of the machine.
This symbol shows where any earth cable for potential equalisation can be con-
nected. The earth bolt is placed on the machine’s stand.

WD-90 DUO Rev. 2.0 (202204)
General information
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 informa-
tion 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 de-
scription 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-90 DUO Rev. 2.0 (202204)
General information
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 ma-
chines, 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 re-
sponsible for ensuring compliance with legislation and regulations.
CE_16_2
1
2
3
5
6
7
7
7
8
6
6
6
4

WD-90 DUO Rev. 2.0 (202204)
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 sup-
plier’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 ma-
chine. 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 nec-
essary training in handling and looking after the machine.

WD-90 DUO Rev. 2.0 (202204)
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 accord-
ance with the instructions.
2.2 Transport
Handle the machine with care during unloading and transport; there is a risk of it
tipping over.
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 ma-
chine’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. Protec-
tive 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-90 DUO Rev. 2.0 (202204)
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 com-
pleted 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 af-
ter 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.
• The machine is fitted with an anti-crushing system, which prevents serious
injury. If anything becomes trapped between the hood and the bottom sec-
tion, the hood reverses and moves up. The sensitivity of the anti-crushing
system is configurable and can be set by a service engineer. Do not place
hands or fingers in the locations indicated in the diagram below when the
hood is closing.
25-4-00-017

WD-90 DUO Rev. 2.0 (202204)
Safety instructions
8
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. Any granules which have ended
up on the floor must be swept up regularly.
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 de-
tergent. Be careful when draining and cleaning the wash tank. Wear protective
gloves and safety glasses and have an eyebath within easy access.

WD-90 DUO Rev. 2.0 (202204)
Installation instructions
9
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 dia-
gram located in the plastic folder behind the front panel of the machine.
• The machine can be equipped with a number of different options. Certain
options may be standard in a number of countries. Check what your ma-
chine is equipped with.
• If holes need to be drilled in the machine, the holes must be fitted with an
edge strip or similar protection.

WD-90 DUO Rev. 2.0 (202204)
Installation instructions
10
3.1.1 Rust on industrial dishwashers
• Large-scale industrial dishwashers in general as well as our dishwashers
are made of stainless materials, but despite this, there are still situations
where rust can occur on “stainless” materials.
• We are going to describe a few reasons for this here, so that you, as a user,
service engineer or other type of personnel, can avoid this.
• Rust usually occurs due to the fact that something that is not stainless finds
its way onto the stainless surface. The non-stainless particles will soon
start to rust, and then contaminate the stainless material, which also starts
to rust. If no action is taken at this point, serious damage such as a hole in
the material can occur.
N.B.! If rust spots have developed, they must be dealt with immediately by a per-
son authorised to do so!
RISK SITUATION CAUSE DECLARATION / ACTION
Drilling holes when installing a
detergent device.
Using a drill or hole saw that has pre-
viously been used for ordinary non-
stainless materials.
“Contaminated” hole-drilling tools
can cause enormous damage in the
form of pores in stainless plates.
Never use a cutting tool that has pre-
viously been used on other materials
or blackplate.
Using blunt tools when drilling holes. Stainless plate, which has overheat-
ed during hole drilling, may lose its
“stainless” properties.
This can show up as rust around the
hole for the detergent cell.
Shavings from hole drilling. The shavings from drilling or hole
sawing are usually heated so much
that they lose their stainless proper-
ties.
They must always be removed by
hand! Washing after hole drilling is
not enough!
Rust spots that occur during nor-
mal operation and use.
Minerals, e.g. ferrous gravel or
earth, from dishware or food (vege-
tables and root vegetables) that has
been lying in crates, find their way
onto the stainless surface. Minerals
(gravel) can also be found on the
wheels of catering trolleys.
Daily cleaning is always important.
Use a suitable brush for “mechani-
cal” cleaning, e.g. in the wash tanks,
on the wash trays and filters.
Steel wool. Ordinary steel wool is not
stainless, and can cause serious
damage to stainless surfaces and
plates.
Use stainless cleaning pads Re-
move all ordinary steel wool from the
catering facility / restaurant.

WD-90 DUO Rev. 2.0 (202204)
Installation instructions
11
3.2 Requirements for the installation site
3.2.1 Lighting
In order to ensure the best possible working conditions during installation, opera-
tion, 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 tem-
perature. 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.
3.2.3 Power supply
In accordance with EN 61000-3-11, the machine is suitable for connecting to a
mains voltage with an impedance of Zmax=0.375 Ωor lower. The maximum im-
pedance must be determined in consultation with the relevant authority prior to
carrying out installation.
Power supply connections are made by qualified personnel in a way that complies
with local and national regulations. The machine’s capacity requirements are stip-
ulated 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 stipulat-
ed in TECHNICAL SPECIFICATIONS.
3.2.5 Drain/waste pipe
There must be a waste 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.

WD-90 DUO Rev. 2.0 (202204)
Installation instructions
12
3.2.6 Space for servicing
The dishwasher is designed to allow it to be positioned in a corner as shown in
the figure below. There must be a gap of at least 100 mm between the walls and
the dishwasher. A clearance of around 1 metre must be left in front of and to the
right of the dishwasher to allow access for servicing and maintenance. The elec-
trical cabinet can be swung out from the dishwasher when servicing and repairs
are needed. To facilitate this, clearance is needed in the form of a semi-circle with
a radius of around 0.75 m running from the front right-hand corner of the machine,
as shown in the figure below. If e.g. a loading table is to be positioned next to the
machine, this should be easy to move.
Dishwasher (seen from above) positioned next to a wall
R0.75m
1 m
1 m
25-4-00-012

WD-90 DUO Rev. 2.0 (202204)
Installation instructions
13
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. A packing notice will have
been applied to the packaging where the latter covers the front of the machine.
Some form of support beam must always be used along the sides of the machine
during transport. Otherwise the machine may become damaged. When transport-
ing 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 reg-
ulations.
A AB B

WD-90 DUO Rev. 2.0 (202204)
Installation instructions
14
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 SPECIFI-
CATIONS.
• Check that the overheating protection device is reset.
• In accordance with EN 61000-3-11, the machine is suitable for connecting
to a mains voltage with an impedance of Zmax=0.375 Ωor lower. The max-
imum impedance must be determined in consultation with the relevant au-
thority prior to carrying out installation.

WD-90 DUO Rev. 2.0 (202204)
Installation instructions
15
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 out-
going electrical circuits from the machine are non-live.
• Remove the protective plastic on the sides which are to be stood against a
wall.
• Undo the hose for detergent on the back of the machine. Hang the hose up
so that it can be easily accessed by the detergent supplier.
• Put the machine in position, the distance between the wall and the machine
should be at least 100 mm.
• Check that the gap between the hood and bottom section is approximately
5 mm around machine.
Put the machine in position and check that the machine and any accessories are
horizontal using a spirit level. Place the spirit level on the join between the ma-
chine tank and the upper part. Adjust the height with the legs.
Check with a spirit level that the machine is horizontal
Once the machine has been filled with water, do another check to make sure the
machine is horizontal.
25-4-00-014

WD-90 DUO Rev. 2.0 (202204)
Installation instructions
16
3.4.3 Fitting the condensation unit
On delivery of dishwashers with condensing unit, the condensing unit is folded
down over the hood and secured with protective transport plates. N.B.! The dish-
washer should be adjusted so that it is standing level when assembly of the con-
densing unit starts
1. Loosen and remove the upper back panel at the rear of the dishwasher.
2. Loosen and remove the screws (c) that hold the protective transport plate
(b) against the condensing unit (a).
3. Loosen and remove the screws (d) and nuts that hold the protective trans-
port plate against the brackets at the back of the dishwasher and remove
the protective transport plate (b). Possibly need to loosen the contact
(JM15) on the power cable to the condensing unit.
4. Lift the condensing unit into an upright position so that it can be attached
to the brackets (5) on the back of the dishwasher. The condensing unit
should not be pulled but lifted into place so that the sunken seal high up on
the back of the dishwasher is not damaged or warped.
5. Attach the condensing unit to the brackets (5) on the dishwasher using the
screws which were previously removed. Check that the condensing unit is
perfectly level. Tighten the screws.
a
b
b
c
c
d
d
25-4-01-008