PRE-RINSE MACHINE
WD-PRM6 and WD-PRM7
(Translation of the original documentation)
Read the manual before using the machine!
Installation and user manual
S/N: (En) Valid from: 201902 Rev.: 5.0
WD-PRM6 & WD-P RM7 Rev. 5.0 (201902)
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 Operation ......................................................................................................... 6
2.4.1 Risk of crushing ........................................................................................ 6
2.4.2 Risk of slipping .......................................................................................... 6
2.4.3 Sounds ...................................................................................................... 6
2.5 Cleaning the machine ...................................................................................... 6
3. Installation instructions ................................................................... 7
3.1 General information ......................................................................................... 7
3.2 Requirements for the installation site ............................................................... 8
3.2.1 Lighting ..................................................................................................... 8
3.2.2 Ventilation ................................................................................................. 8
3.2.3 Power supply ............................................................................................ 8
3.2.4 Water ........................................................................................................ 8
3.2.5 Drain/waste pipe ....................................................................................... 8
3.2.6 Space for servicing ................................................................................... 8
3.3 Transport and storage ...................................................................................... 9
3.3.1 Unpacking ................................................................................................. 9
3.3.2 Recycling .................................................................................................. 9
3.4 Installation ...................................................................................................... 10
3.4.1 Preparing for the installation ................................................................... 10
3.4.2 Positioning the machine .......................................................................... 10
3.5 Connections ................................................................................................... 11
3.5.1 Electrical connection ............................................................................... 12
3.5.2 Water connection, regardless of any options .......................................... 12
3.5.3 Ventilation ............................................................................................... 12
3.5.4 Drain/waste pipe ..................................................................................... 12
3.5.5 Adjustment of hinged basket conveyor ................................................... 15
3.5.6 Bleeding the hood lifting cylinder (option) ............................................... 15
3.5.7 Setting / adjustment of flows ................................................................... 15
WD-PRM6 & WD-P RM7 Rev. 5.0 (201902)
3.6 Installation and connection of auxiliary equipment and options ..................... 16
3.6.1 Sinks ....................................................................................................... 16
3.6.2 Booster pump, shared with dishwasher connected (option) ................... 17
3.6.3 Drain pump, shared with dishwasher connected (option) ....................... 18
3.7 Trial operation ................................................................................................ 19
3.7.1 Start-up schedule .................................................................................... 19
3.8 Documentation ............................................................................................... 20
4. Operating instructions ................................................................... 21
4.1 Before pre-rinsing .......................................................................................... 22
4.1.1 Machine design ....................................................................................... 22
4.1.2 Preparations before filling ...................................................................... 23
4.1.3 Filling the machine ................................................................................. 23
4.2 Pre-rinse ........................................................................................................ 23
4.2.1 Positioning of dishware in baskets .......................................................... 24
4.2.2 Machines with manual hood lift ............................................................... 25
4.2.3 Machines with an automatic hood lift (option) ......................................... 25
4.2.4 Changing the water ................................................................................. 25
4.2.5 Emergency stop function ........................................................................ 26
4.3 After use – Cleaning ...................................................................................... 26
4.3.1 Incorrect cleaning methods ..................................................................... 26
4.3.2 Emptying ................................................................................................. 27
4.3.3 Daily cleaning ......................................................................................... 27
4.3.4 Cleaning each week or as required ........................................................ 28
4.3.5 Operating problems ................................................................................ 29
5. Technical specifications ................................................................ 30
General instructions
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 WD-PRM6/7 can only replace manual pre-rinsing of items. In future,
the items must still be washed and rinsed out in a dishwasher.
• 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.
• The capacity requirements of the machine can be found in the TECHNICAL
DATA chapter.
• The electronics in the machine are RoHS compatible.
WD-PRM6 & WD-PRM7 Rev. 5.0 (201902)
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 installed during use.
The machine and equipment requires an annual service. Contact one of our authorised and trained service companies for such a service.
1
General instructions
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.
WD-PRM6 & WD-PRM7 Rev. 5.0 (201902)
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.
2
General instructions
S/N:
V
Hz
A
kW
kW
kW
Type
Mårdvägen 4, S-352 45 VÄXJÖ SWEDEN
M
IP
1
2
5
9
6
4
8
11
3
7
10
!
marks_15
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:
WD-PRM6 & WD-PRM7 Rev. 5.0 (201902)
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.
3
WD-PRM6 & WD-PRM7 Rev. 5.0 (201902)
CE_16_2
1
2
3
5
6
7
7
7
8
6
6
6
4
General instructions
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, SE35245 Växjö, SWEDEN, Tel.: +46 470 771200, Fax: +46 470 23752, Email: wexiodisk@wexiodisk.com).
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.
4
Safety instructions
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.
WD-PRM6 & WD-PRM7 Rev. 5.0 (201902)
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. 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.
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.
5
Safety 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 main switch.
• Make sure that the mains voltage is the same as that indicated on the ma-
For increased safety, it is recommended to equip the installation with a ground
fault circuit interrupter.
2.4 Operation
WD-PRM6 & WD-PRM7 Rev. 5.0 (201902)
chine’s rating plate.
Be very careful around the machine when it is in operation.
2.4.1 Risk of crushing
The machine, and any equipment, has moving parts before, during and after prerinsing. 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.
2.4.2 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.
2.4.3 Sounds
The machine is not silent during operation, see TECHNICAL SPECIFICATIONS.
Hearing protection may therefore need to be used.
2.5 Cleaning the machine
The water in the tank has a temperature of approximately 40°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.
6
WD-PRM6 & WD-PRM7 Rev. 5.0 (201902)
Installation instructions
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 WD-PRM6/7 cannot be combined with a WD 6/7 that is fitted with a
heat recovery package through the wastewater.
• The dishwasher connected to the WD-PRM6/7 should have software version 4.7 or later. Where the dishwasher has an earlier software version, it
should be updated.
• 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.
7
WD-PRM6 & WD-PRM7 Rev. 5.0 (201902)
Installation instructions
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 welllit room.
3.2.2 Ventilation
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
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 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.
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.
8
Installation instructions
3.3 Transport and storage
Always transport the machine in an upright position.
Take care during transport, as there is a risk of tipping. NB: 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.
WD-PRM6 & WD-PRM7 Rev. 5.0 (201902)
3.3.1 Unpacking
3.3.2 Recycling
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.
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.
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.
9
Installation instructions
140 300
A
20
300
20
303082_ R2
A
WD-6x
WD-7x
WD-8x
WD-12x
WD-PRM6
WD-PRM7
WD-6x
WD-7x
WD-8x
WD-12x
WD-PRM6
WD-PRM7
WD-6x
WD-7x
WD-8x
WD-12x
WD-PRM6
WD-PRM7
WD-6x
WD-7x
WD-8x
WD-12x
WD-PRM6
WD-PRM7
WD-6x
WD-7x
WD-8x
WD-12x
WD-PRM6
WD-PRM7
WD-6x
WD-7x
WD-8x
WD-12x
WD-PRM6
WD-PRM7
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.
• The level pipe in the connected dishwasher must be removed and replaced
by a bottom filter.
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.
WD-PRM6 & WD-PRM7 Rev. 5.0 (201902)
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 standing level.
A=Distance between the machines, with or without a cabinet (option)
10
Installation instructions
PRM_67_04_R3
1
4 3
6
5
2
5
4
4
2
3
5
MIN.20
MIN.20
3.5 Connections
WD-PRM6 & WD-PRM7 Rev. 5.0 (201902)
1. Bleed for lifting cylinder (on machines with an automatic hood) (option)
2. Electrical connection
3. Water connection in the bottom of the washing tank for incoming water
from the dishwasher.
4. Drain connection in the bottom of the washing tank.
5. Cold water connection (option)
6. Drain lever
In the following chapter, figures are given in brackets to clarify what needs to be
done. These numbers refer to image and list above.
11
WD-PRM6 & WD-PRM7 Rev. 5.0 (201902)
Installation instructions
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 main 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 (2).
After completing the installation, switch on the main switch and all circuit breakers.
3.5.2 Water connection, regardless of any options
• The dishwasher fills with water (3) via the dishwasher that the WD-PRM6/
7 is connected to.
• If the machine has a water-powered automatic hood, the water is connected to (5).
• 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.
3.5.3 Ventilation
The machine’s heat load for the room is stipulated in TECHNICAL SPECIFICATIONS.
3.5.4 Drain/waste pipe
The waste water system connected to (4) 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.
Connecting the dishwasher
The length of level pipe that is firmly fitted on WD-PRM6/7 varies depending on
which dishwasher it should be connected with.
WD-6x and WD-7x: WD400031.01
WD-12x: WD400031.03
Setting the pressure switch:
Upper level: Lower level:
WD-PRM6 / 7 265 mm 155 mm
WD-12 350 mm 270 mm
12
Installation instructions
PRM_67_05_R3
A
B
C
D
E
F
WD-6x
WD-7x
WD-8x
WD-12x
WD-PRM6
WD-PRM7
Feed from right to left
WD-PRM6 & WD-PRM7 Rev. 5.0 (201902)
Water and drain connections seen from above. Dishwasher placed to the left of
WD-PRM6/7.
• A=Water connection in the bottom of the dishwasher's washing tank. The
connection must be fitted with a bottom filter. (NB: No level pipe)
• B=Connecting pipe. Cut to a suitable length.
• C=Connection for connecting pipe.
• A=Water connection in the bottom of WD-PRM6/7's washing tank. The
connection must be fitted with a bottom filter. (NB: No level pipe)
• E=Drain connection in the bottom of WD-PRM6/7's washing tank. (Position
and length of level pipe.)
• F=Connection for waste pipe between machine and floor drain.
13
Installation instructions
PRM_67_06_R3
D
E
F
C
G
A
B
WD-6x
WD-7x
WD-8x
WD-12x
WD-PRM6
WD-PRM7
Feed from left to right
Water and drain connections seen from above. Dishwasher placed to the right of
WD-PRM6/7.
WD-PRM6 & WD-PRM7 Rev. 5.0 (201902)
• A=Water connection in the bottom of the dishwasher's washing tank. The
connection must be fitted with a bottom filter. (NB: No level pipe)
• B=Connecting pipe. Cut to a suitable length.
• C=Connection for connecting pipe.
• A=Water connection in the bottom of WD-PRM6/7's washing tank. The
connection must be fitted with a bottom filter. (NB: No level pipe)
• E=Drain connection in the bottom of WD-PRM6/7's washing tank. (Position
and length of level pipe.)
• F=Connection for waste pipe between machine and floor drain.
• G=Pipe bend with associated sleeve; loosen and turn to connect connecting pipe from right.
14
WD-PRM6 & WD-PRM7 Rev. 5.0 (201902)
PRM_47747
Installation instructions
3.5.5 Adjustment of hinged basket conveyor
• Adjust the machine so that it is level by adjusting all four feet so that they
are in full contact with the floor. Use a spirit level.
• Fill the machine.
• Lift the basket conveyor (5) up and down and adjust leg (1) and leg (2) until
the basket conveyor is in the middle of both supports (3) and (4).
• The legs must be adjusted in pairs if any further adjustment is required (to
the side, forwards or backwards).
3.5.6 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.
3.5.7 Setting / adjustment of flows
This is described in the chapter ADJUSTMENT INSTRUCTIONS.
15
WD-PRM6 & WD-PRM7 Rev. 5.0 (201902)
300730_R1a
6
15
Installation instructions
3.6 Installation and connection of auxiliary equipment and options
• Once the machine is in place and has been adjusted horizontally and vertically, the auxiliary equipment can be fitted.
• The machine can be equipped with a number of options. Check what your
machine is equipped with, which depends on the model, machine type and
country.
The various options normally place no specific requirement on the installation.
3.6.1 Sinks
The sinks must be hooked firmly onto the top edge of the tank.
The connection profile must look like the one shown in the drawing. The distance
of 6 mm may be reduced, but must not be less than 3 mm.
Use a spirit level to check that the sinks are horizontal and adjust the height, if
necessary.
Detail of sink cover
16
WD-PRM6 & WD-PRM7 Rev. 5.0 (201902)
A
(47856)
B
Installation instructions
3.6.2 Booster pump, shared with dishwasher connected (option)
Because the dishwasher connected is fitted with a booster pump (possible option), the WD-PRM6/7 can also use this.
A: connect to water connection (5) on WD-PRM6/7
B: connect to the dishwasher's water connection
See the wiring diagram for electrical connections.
17
WD-PRM6 & WD-PRM7 Rev. 5.0 (201902)
4
C
3
3
WD-PRM6/7
min. 25mm
min. 25mm
WD-6x
WD-7x
WD-8x
WD-12x
Dishwashing
machine
gemensam_dp
D
Installation instructions
3.6.3 Drain pump, shared with dishwasher connected (option)
Because the dishwasher connected is fitted with a drain pump (possible option),
the WD-PRM6/7 can also use this.
• A is connected to drain (4) on WD-PRM6/7.
• B is connected to the inlet on the dishwasher's drain pump.
• The drain hose (C) consists of a coiled hose and is connected to the floor
drain (D) according to one of the alternatives in the image and to the drain
of the dishwasher (3).
18
Installation instructions
3.7 Trial operation
Prepare the machine for trial operation with the help of OPERATING INSTRUCTIONS. The instructions describe the measures that must be taken to prepare the
machine for operation.
3.7.1 Start-up schedule
This should be completed when the machine is started up and used.
Machine type:
Machine serial number:
Installation date:
Read the installation and user manuals carefully. Then check the following points:
1. Check:
WD-PRM6 & WD-PRM7 Rev. 5.0 (201902)
• Water and drain connections
• That the machine is evenly balanced
• That strainers are in place
• The drain lever is closed
2. Filling the machine:
• NB: The dishwasher that is connected must be started
• Press the 0/1 button
• Fill the machine with water in accordance with the manual
3. Start the machine:
• Check the pump’s direction of rotation
N.B.! If the direction of rotation is wrong, the phase must be inverted on the
lockable main switch
4. Run a number of baskets complete with loads and check that:
• There are no water leaks
• The hood switch functions
• The automatic hood functions (option)
• The automatic start function works (option)
5. Final check: Empty the machine and turn off the power using the main
switch.
• Re-tighten all the connections on the contactors and any circuit breakers
• Set all the circuit breakers to the ON position
• Display the quick guide supplied with the machine
19
Installation instructions
6. Train and inform personnel concerning:
• Pre-rinse
• Care (daily, weekly and other frequencies)
• Recommendation for annual service
3.8 Documentation
For correct use and servicing, it is essential that the documentation accompanying the machine is made available to personnel who will be using the machine.
The installation and user manual, which describes handling and care among other things, should be stored near the machine.
WD-PRM6 & WD-PRM7 Rev. 5.0 (201902)
20
WD-PRM6 & WD-PRM7 Rev. 5.0 (201902)
Operating instructions
4. Operating instructions
Read the chapters GENERAL INSTRUCTIONS and SAFETY INSTRUCTIONS
carefully before starting work.
This chapter describes what must be done with the machine:
• Before pre-rinsing
• The way in which the pre-rinsing should be completed
• Following any pre-rinsing
• In connection with troubleshooting
The use of the machine is dependent on how the machine is equipped.
If the machine will not be used for a longer period, the power to the machine
should be turned off using the power switch, the water supply turned off and machine should be left open.
21
Operating instructions
PRM_67_07_R3
7
6
3
4
5
2
1
9
8
10
4.1 Before pre-rinsing
4.1.1 Machine design
WD-PRM6 & WD-PRM7 Rev. 5.0 (201902)
1. “Autostart” (if the machine has this option, the hood is closed automatically
when a basket is loaded in the machine.) (option)
2. Tank filter
3. Level pipe
4. Pump filter
5. Bottom strainer
6. Wash arm
7. Wash nozzle
8. Button to switch the power on or off. Lights up green when the tank is filled
9. Pushbutton to open/close the hood. (On machines with an automatic hood
10. Drain lever
In the following chapter, figures are given in brackets to clarify what needs to be
done. These numbers refer to image and list above.
and blue when pre-washing.
lift.) (option)
22
Operating instructions
4.1.2 Preparations before filling
Check:
• That the machine and removable parts have been cleaned. If not – clean
them!
• That there is no dirt in the nozzles of the wash arms (6)
• That removable parts are correctly in place
• That the drain lever (10) is turned to the left as far as it will go
• That the power switch is in the ON position
4.1.3 Filling the machine
NB: The dishwasher must be started. When the dishwasher is started, both the
machines are filled with water at the same time.
• Press the 0/1 button (8) to switch on the power.
WD-PRM6 & WD-PRM7 Rev. 5.0 (201902)
4.2 Pre-rinse
• The light in the pushbutton (8) lights up green when the machine is filled
and blue when pre-washing.
• During operation the machine’s tank fills automatically.
• For optimum results, it is essential to keep the filters (2) clean. Remove the
filters and rinse regularly.
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WD-PRM6 & WD-PRM7 Rev. 5.0 (201902)
Operating instructions
4.2.1 Positioning of dishware in baskets
The machine is supplied with washing baskets depending on the equipment level.
The washing baskets are used according to the following:
The yellow basket is used for side plates, trays, plates, etc.
The blue basket is used for glasses, cups and canteens
The brown basket is used for cutlery
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WD-PRM6 & WD-PRM7 Rev. 5.0 (201902)
400046.31
PRM
PRM
PRM
Operating instructions
4.2.2 Machines with manual hood lift
• Push in the basket and close the hood. The pre-rinse will start automatically.
• The pre-rinse will have finished after a set amount of time (the time may be
adjusted by authorised personnel). Open the hood and push the basket
into the dishwasher for washing and final rinsing.
4.2.3 Machines with an automatic hood lift (option)
• Push in the basket and close the hood by pressing the button (9). The prerinse will start.
• If the machine is fitted with autostart (1), the hood is closed automatically
when a basket is loaded. The pre-rinse will start. (option)
• The pre-rinse will have finished after a set amount of time and the hood will
open automatically (the time may be adjusted by authorised personnel).
Push the basket into the dishwasher for washing and final rinsing.
4.2.4 Changing the water
The drain lever (10) can be turned to three different positions.
Left: The machine’s tanks are closed.
Right: WD-PRM6/7 tank open to drain and the dishwasher’s tank closed.
Middle position (downwards): Both the machine’s tanks are now open to the
drain.
The water in the machine does not normally need changing but this can be done.
If you nevertheless want to change the water in WD-PRM6/7, this is what you
should do:
• Turn the drain lever (10) to the right as far as it will go.
• The water is now emptied out from WD-PRM6/7.
• Take out the strainers (2) and clean these, refit them.
• Turn back the drain lever (10) as far to the left as it will go.
• WD-PRM is now refilled automatically with water via the connected dishwasher.
25
Operating instructions
WD9_07
4.2.5 Emergency stop function
If the machine needs to be stopped when it is in operation, use the buttons on the
control panel. Press the 0/1 button (8) to turn off the power. Press the 0/1 button
(8) to restart the machine.
4.3 After use – Cleaning
HACCP is a preventive inspection system to ensure hygiene requirements are
met during the washing process and cleaning of the machine. As a result of its
design, the machine meets strict hygiene requirements. Regular, thorough cleaning is also important from a hygiene perspective. A machine that is properly
cleaned helps produce a good wash result, reduces the risk of dirt accumulating,
increases the service life of the machine and reduces the risk of emergency shutdown.
4.3.1 Incorrect cleaning methods
WD-PRM6 & WD-PRM7 Rev. 5.0 (201902)
NB: An incorrect cleaning method may damage the machine. The following points
must be observed:
• Do NOT use steel wool as it will cause corrosion to form on the machine.
• If detergent is used, it must not contain abrasives. Detergents containing
abrasives will damage the stainless steel panels.
• The exterior of the machine must not be hosed. Water can enter the machine and damage the control panel and electrical equipment.
• Pressure washers and steam can damage the machine and must NOT be
used for cleaning purposes. Never use a pressure washer to clean the floor
within 1 metre of the machine. The supplier cannot be held liable for any
faults caused by the use of pressure washers on the machine and any such
use may invalidate the warranty. There is a risk of splashing even if the
floor is hosed down.
Steel wool and pressure washers must not be used for cleaning
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Operating instructions
4.3.2 Emptying
Machines without a drain pump
• Press the 0/1 button (8).
• Empty the tanks in WD-PRM6/7 and the connected dishwasher by turning
Machines with a drain pump
• Press the 0/1 button (8).
• Turn the drain lever (10) to one of the drain positions (downwards or to the
• See the manual for the dishwasher connected.
4.3.3 Daily cleaning
Internally
WD-PRM6 & WD-PRM7 Rev. 5.0 (201902)
the drain lever (10) to the middle position (downwards).
right).
Clean the filters (2, 5). Check the wash arms’ (6) nozzles (7); clean if necessary.
Rinse out all of the machine’s inside surfaces and clean the tank.
Externally
Wipe the outside of the machine with a soft, damp cloth.
• If detergent is used, it must not contain abrasives. Detergents containing
abrasives will damage the stainless steel panels.
• The exterior of the machine must not be hosed. Water can enter the machine and damage the control panel and electrical equipment.
27
WD-PRM6 & WD-PRM7 Rev. 5.0 (201902)
Operating instructions
4.3.4 Cleaning each week or as required
In addition to the daily cleaning measures, clean the machine as per these instructions:
• Remove the wash arms. Loosen the lock nut (A) in the centre of the wash
arm and remove the wash arm. Check and clean the nozzles if necessary.
Rinse the wash arms and refit them.
• Clean the top of the splash strip (C). The strip is inside the top of the machine at the back.
A=Upper wash arm
B=Lock nut
C=Splash strip
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WD-PRM6 & WD-PRM7 Rev. 5.0 (201902)
Operating instructions
4.3.5 Operating problems
Troubleshooting
The following errors can be dealt with by the operator. If the problem persists,
contact authorised service personnel.
PROBLEMS CAUSE ACTION
The machine will not start. The main switch is off. Turn on main switch.
The machine does not fill with
water.
The hood is not opened/closed
properly.
The machine does not start pre-
washing.
Noise from pump. Low water level. Foam in the tank. Check the level. Change the water.
When you contact service personnel, you will need to provide the following information:
The drain lever is not in the correct
position.
Air has got into the system. Bleed the hood lifting cylinder as per
The hood is open. Close the hood.
Dishes are blocking the magnet on
the hood.
Turn the drain lever as far to the left
as it will go.
the manual.
Remove the dishes in question.
• Machine type and model.
• Machine serial number and date when the machine was installed.
• A brief description of the problem.
• What happened/was being done immediately before the fault occurred?
29
Technical specifications
The manufacturer reserves the right to make changes to the technical data.
TECHNICAL DATA
Pump motor (kW) 0.9
Booster pump (kW) * 0.6
Tank volume (litres) 45
Weight, machine in operation (kg), (WD-PRM6) 130
Weight, machine in operation (kg), (WD-PRM7) 150
Enclosure protection class (IP) 45
WD-PRM6 & WD-PRM7 Rev. 5.0 (201902)
5. Technical specifications
* Option
CAPACITY AND OPERATING DATA
Total pre-rinse time (sec.) 30 / 45 / 60
Max. capacity, baskets/hour (no.) * 120
Sound pressure level, LPA (dBA) ** 60 - 62
Sound power level, LWA (dBA) ** 72 - 74
* With a 30 sec. pre-rinse time.
** in accordance with EN 60 335-2-58, §ZAA.2.8 with instruments that satisfy
class 1.
Measurements of the sound pressure level on site are performed in three places
20 cm from the edges of the front at a height of 1.55 m using a microphone.
When measuring sound power level, create an imaginary measurement area consisting of five sides at a distance of 1 m from all edges of the machine.
CONNECTION, MACHINE
Total connected power (kW) 0.9
Main fuse 400 V 3N~ (A) * 10
Max. connection area 400 V 3N~ (L1-L3, N, PE) Cu (mm²) ** 2.5
* Other voltages on request
** 2-metre-long cable included
30
Technical specifications
WATER, DRAIN AND VENTILATION CONNECTIONS
Drain connection, PP pipe (ø mm) 50
Water capacity, hood lift, pressure (kPa) (WD-PRM6) * 180
Water capacity, hood lift, pressure (kPa) (WD-PRM7) * 300
Water capacity, hood lift, flow (litres/minute) * 2
Floor drain, capacity (litres/sec.) 3
Heat load room, latent / sensitive / total (kW) 0.1 / 0.2 / 0.3
* Option. At a lower pressure/flow, the machine should be fitted with a booster
pump
SIZE AND WEIGHT FOR TRANSPORT
Size (LxWxH (mm)) * (WD-PRM6) 765x710x1560
Size (LxWxH (mm)) * (WD-PRM7) 765x805x1650
Weight (kg) * (WD-PRM6) 100
Weight (kg) * (WD-PRM7) 105
WD-PRM6 & WD-PRM7 Rev. 5.0 (201902)
** Including packaging
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