Winterhalter MTR Series User manual

Rack conveyor and flight-type
dishwashing machines MTR / MTF
Operating instructions
MTR
MTF

The illustrations on the front cover show examples of possible machine variants and equipment levels

1
Operating instructions
For Winterhalter MTR series rack conveyor dishwashing machines and
for Winterhalter MTF series flight-type dishwashing machines
(translation of the original German operating instructions)
Table of contents
1About these instructions...................................................................................................................3
2Designated use...................................................................................................................................3
2.1 Non-designated use.............................................................................................................................4
3Safety notes........................................................................................................................................4
3.1 General safety notes............................................................................................................................4
3.2 Electrical safety....................................................................................................................................5
3.3 Maintenance and repair work...............................................................................................................5
3.4 Handling chemicals (detergent, rinse aid, descaler, etc.)....................................................................5
3.5 Daily cleaning and care........................................................................................................................6
4Before working with the machine.....................................................................................................6
4.1 Checking for completeness..................................................................................................................6
4.2 Initial start-up........................................................................................................................................6
5Product description...........................................................................................................................6
6Controls...............................................................................................................................................7
6.1 Switching on the screen.......................................................................................................................7
6.2 Menu levels..........................................................................................................................................7
6.3 Screen saver........................................................................................................................................8
7Operation ............................................................................................................................................8
7.1 Making ready for operation ..................................................................................................................8
7.1.1 Before switching on the machine.........................................................................................................8
7.1.2 Switching on.........................................................................................................................................9
7.2 Washing with the standard programmes .............................................................................................9
7.2.1 Starting / stopping transport...............................................................................................................10
7.2.2 Having the transport run backwards..................................................................................................10
7.2.3 Washing (MTF series machines) .......................................................................................................10
7.2.4 Washing (MTR series machines).......................................................................................................11
7.2.5 Container programme........................................................................................................................11
7.2.6 Breaks in operation............................................................................................................................12
7.3Washing with the special programmes..............................................................................................12
7.3.1 Glasswashing programme .................................................................................................................12
7.3.2 Rinsing with osmosis water (can be switched on).............................................................................12
7.3.3 Rinsing with softened water and osmosis water (cannot be changed)..............................................12
7.3.4 Example: Washing in the glasswashing programme and rinsing with osmosis water (can be
switched on).......................................................................................................................................13
7.4 Routine checks...................................................................................................................................14
7.5 Water change in zone 1.....................................................................................................................15
7.6Switching off the machine..................................................................................................................15
8Maintenance and care......................................................................................................................16
8.1 Every day ...........................................................................................................................................16
8.1.1 Cleaning the grease filter...................................................................................................................16
8.1.2 Cleaning programme..........................................................................................................................16
8.1.3 Checking external water treatment....................................................................................................18
8.2 Every month.......................................................................................................................................18
8.2.1 Cleaning the roof cleaning jet ............................................................................................................18
8.2.2 Cleaning the exhaust air system........................................................................................................18
8.2.3 Cleaning the dirt trap..........................................................................................................................19
8.2.4 Descaling............................................................................................................................................19
8.3 Maintenance by customer service .....................................................................................................20
8.4 Changing the detergent product ........................................................................................................20
9Taking out of service for a long time.............................................................................................21
10 Organisation of the washing process............................................................................................22
11 Malfunctions.....................................................................................................................................23
11.1 Malfunctions; display by symbols on the screen................................................................................23
11.2 Malfunctions; display by fault code on the screen.............................................................................24

About these instructions
2
11.3 Malfunctions; poor washing result..................................................................................................... 24
12 Info menu ......................................................................................................................................... 25
13 PIN menu.......................................................................................................................................... 25
13.1 The PIN menu ................................................................................................................................... 26
13.2 Hygiene logbook................................................................................................................................ 26
13.3 Operating data................................................................................................................................... 27
13.4 Automatic start-up............................................................................................................................. 27
13.5 General settings ................................................................................................................................ 29
13.5.1 Date, time, °Celsius / °Fahrenheit..................................................................................................... 29
13.5.2 Setting the contrast ........................................................................................................................... 30
13.5.3 Setting the language ......................................................................................................................... 30
14 GSM module (option)...................................................................................................................... 31
15 Data transfer to PC (option) ........................................................................................................... 33
16 Disposal............................................................................................................................................ 33
17 Technical data.................................................................................................................................. 33
17.1 Technical data................................................................................................................................... 33
17.2 Emissions.......................................................................................................................................... 34
18 Connecting external dosing equipment (detergent, rinse aid)................................................... 35
18.1 Installing the conductivity electrode................................................................................................... 35
18.2 Installing the dosing tube (detergent)................................................................................................ 35
18.3 Installing the dosing tube (rinse aid).................................................................................................. 36
18.4 Electrical connection ......................................................................................................................... 36
18.5 Commissioning the dosing equipment .............................................................................................. 36
19 Machines with automated powder dosing.................................................................................... 37

About these instructions
3
1 About these instructions
These operating instructions will give you a quick overview of the main functions and safe operation of your
warewasher. Keep the operating instructions accessible. On our website www.winterhalter.biz/manuals you
can find the operating instructions in electronic form too.
Please carefully observe the safety notes listed here (3).
Chapter 18 describes how the dosing equipment for detergent and rinse aid must be connected.
This chapter is intended for service technicians authorised by Winterhalter.
The following symbols are used in these instructions:
Symbol
Meaning
Danger
Warning against potential serious or fatal injuries to persons if the precautionary measures
described are not taken.
Warning
Warning against potential minor injuries to persons or material damage if the precautionary
measures described are not taken.
Caution
Warning against possible defects or damage of the product if the precautionary measures
described are not followed.
Carefully read through the safety notes and operating instructions in this manual before
working with this machine.
IMPORTANT
Important information is provided here.
INFO
Useful information is given here.

This symbol indicates instructions.

This symbol indicates the results of your actions.

This symbol indicates itemisations.

This symbol refers to a chapter with more detailed information.
2 Designated use
MTR and MTF series dishwashing machines are exclusively to be used for washing
crockery such as plates, cups, cutlery and trays in catering and similar companies.
In MTF series dishwashing machines, the dishes are placed directly on the conveyor
belt. Small items such as glasses or cutlery are sorted, put into washing racks and
placed on the conveyor belt.
In MTR series dishwashing machines, all of the dishes are sorted into racks and
transported through the machine. Always wash using washing racks suitable for the
dishes. Never wash without a washing rack.
We recommend only washing glasses if the dishwashing machine is equipped with the
special glasswashing programme. The reduced rinse temperature in this programme
prevents premature glass corrosion.
We recommend only washing containers such as catering containers if the dishwashing
machine is equipped with the special container washing programme.
MTR and MTF series dishwashing machines are technical implements for commercial
use and are not intended for domestic applications.

Safety notes
4
2.1 Non-designated use
Do not use the dishwashing machine for washing electrically heated cooking
implements or items made from wood.
Do not wash plastic items unless they are thermostable and will not be damaged by the
detergent solution.
Only use a suitable detergent to wash aluminium items such as pans, containers or
trays, so as to prevent black discolouration.
Winterhalter Gastronom GmbH will not accept liability for any damage caused by failure
to use the dishwashing machine in accordance with the designated use.
3 Safety notes
3.1 General safety notes
Read through the safety notes and operating instructions in this manual carefully.
Winterhalter Gastronom GmbH does not assume liability or warranty in case of non-
compliance with these safety and operating instructions.
Use the warewasher only after you have read and understood the operating
instructions. Allow the Winterhalter Customer Service Department to provide information
about the operation and functioning of the warewasher.
Do not climb or sit on the opened hinged door.
Train the operating personnel as regards handling the machine and inform them about
the safety notes. Repeat the training sessions at regular intervals to prevent accidents.
For your safety, test the on-site residual current circuit breaker (FI) regularly by pressing
the test button.
Close the water stopcock in the building after completing work. There may be up to
three stopcocks depending on the size of the machine and its level of equipment.
Switch off the mains disconnector in the building or the built-in mains disconnector on
the machine after completing work.
Do not open any doors when the machine is washing. There is a risk that hot washing
solution could spray out. Switch the machine off first.
Keep the machine documents close to hand. The Winterhalter service technicians
require the circuit diagram for repairs.
Load sharp, pointed utensils so that they cannot injure anyone.
Keep children away from the machine. The interior of the machine holds a solution of
detergent in hot water at about 60°C.
Only use your fingers and not sharp objects to operate the control panel.
Do not place any towels or other objects on top of the machine, since suction openings
are located there and they must not be covered up.
Do not reach into the exhaust air pipe and do not cover the exhaust air pipe.
Do not reach into the jet of the drying zone.
During washing, do not reach inside the machine at either the infeed or outfeed end.
Do not reach into the conveyor belt during washing.

Safety notes
5
3.2 Electrical safety
The electrical safety of this machine is guaranteed only if it is connected to a correctly
installed protective circuit and a residual current circuit breaker. It is crucial that this
basic safety requirement is tested and, in case of doubt, that the house installation is
checked by a qualified electrician.
Winterhalter cannot be held responsible for damage caused by a missing or broken
protective conductor (e.g. electrical shock).
3.3 Maintenance and repair work
When performing installation, maintenance and repair work, unplug the machine from
the mains supply.
Maintenance work and repairs may only be performed by authorised Winterhalter
service technicians. Improper maintenance or repairs may cause significant danger for
the user, for which Winterhalter is not liable.
Original spare parts must be used for repairs or to replace consumable parts. If original
spare parts are not used, the warranty is invalidated.
Operate this machine only when it is in perfect condition.
A damaged or leaking machine may endanger your safety. In case of danger and/or
defects, switch off the machine immediately. Switch off the on-site mains disconnector
(main switch). Only then is the machine without power.
Contact your installer or electrician if the on-site water or electricity supply is the cause
of the malfunction.
Contact an authorised service technician or your dealer if any other fault occurs.
If the mains cable is damaged, to prevent hazards it must be replaced by Winterhalter
or its Customer Service or another qualified person. The mains cable must be an oil-
resistant, encased and flexible wire. The wire type H07RN-F is recommended.
3.4 Handling chemicals (detergent, rinse aid, descaler, etc.)
When using chemicals, comply with the safety notes and recommended dosages
printed on the packaging.
Wear protective clothing, protective gloves and protective goggles when handling
chemicals.
Only use products that are suitable for commercial dishwashing machines. Such
products are marked accordingly. We recommend using products developed by
Winterhalter. These products are specially adapted for Winterhalter dishwashing
machines.
Do not mix different detergent products together as this could result in crystallisation
and consequently cause irreparable damage to the detergent dosing device.
Do not use any foaming products, e.g. hand soap, soft soap, manual wash-up cleaner.
These products may not enter the machine, even through pre-washing of the dishes.

Before working with the machine
6
3.5 Daily cleaning and care
Comply with the information on maintenance and care given in these instructions (8).
Put on protective clothing and protective gloves before holding parts that are covered
with tank water (filters, wash arms, curtains, etc.).
Do not spray the machine or direct vicinity (walls and floor) with a water hose, steam jet
or high-pressure cleaner.
When cleaning the floor, take care to avoid flooding the substructure of the machine, in
order to prevent the uncontrolled entry of water.
Use a water hose and a brush (not a pressure washer) for cleaning the interior of the
machine.
Do not use any scouring powder or abrasive cleaning agents.
During daily cleaning, make sure that no foreign objects that could start to rust have
been left in the interior of the machine; these objects could even induce corrosion of the
stainless steel material. Rust particles might come from non-stainless steel dishes,
cleaning aids, damaged wire racks or water pipes that do not have corrosion protection.
Clean the outside of the machine using a suitable stainless steel cleaner and a soft
cloth. We recommend Winterhalter Gastronom stainless steel cleaner and stainless
steel polish.
4 Before working with the machine
Have the machine installed by your Winterhalter service technician or dealer. Comply with chapter 9 if the
installation location is not frost-free.
Have the machine connected by authorised technicians in accordance with the locally applicable
standards and regulations (water, waste water, electricity, ventilation).
In addition, have the machine connected to the steam and condensation pipes if it is heated by steam.
Have the machine commissioned by a service technician authorised by Winterhalter. At the same time,
have yourself and your operating personnel trained in how to operate the machine.
4.1 Checking for completeness
Refer to the delivery note to check the delivery is complete and look for any transport damage.
Immediately inform the transport company, the insurance company and the manufacturer in case of
damage.
4.2 Initial start-up
After the machine has been correctly connected to the supply lines in the building, contact the
Winterhalter branch that is responsible for the location in order to request initial start-up and instruction in
how to operate the machine.
5 Product description
In MTR and MTF series dishwashing machines, various kinds of dishes are automatically transported
through various zones, washed and dried. Detergent, rinse aid and any additional chemicals are dosed using
separate dosing equipment. There are prepared connection terminals for connection purposes (18).
The machines are operated using a touchscreen. Symbols and animations guide you through the menus,
most of which are linguistically neutral.
Explanation of terminology used
Multi-tank
dishwasher:
Dishwashing machine with at least 2 tanks; only the terms “machine” or
“dishwashing machine” are used subsequently in these instructions.
MTF:
Multi-tank dishwasher with flight-type transport system
MTR:
Multi-tank dishwasher with rack conveyor transport system
Dishes:
General term for plates, cups, cutlery, trays, etc.

Controls
7
6 Controls
The machine is operated using a touchscreen with touch-sensitive buttons (keys).
When you touch the buttons, actions are triggered or information is displayed.
Each time you press a button, this is confirmed by an acoustic signal.
The appearances of the buttons have the following meanings:
Thin dotted frame;
dark background
Button cannot be pressed
(is not available / cannot be activated)
Thick white frame;
dark background
Button can be pressed
(is available / can be activated)
Thick white frame;
white background
Button has been pressed / activated
6.1 Switching on the screen
Screen 01
Touch the screen surface with your finger.
The screen switches on (screen 01) and switches off
after a short time (to prevent the machine being switched on
inadvertently during cleaning).
INFO: The time before switching off can be changed by the
Winterhalter service technician (17.1).
6.2 Menu levels
There are two menu levels, one of which is protected by a PIN. Each screen has a number at the bottom
right to facilitate understanding if there are any queries.
Menu level for the washing personnel
This menu level mostly has linguistically neutral symbols to make it as easy as possible to operate the
machine and instruct the personnel.
Menu level for the kitchen manager
The menu level for the kitchen manager can be accessed after entering a PIN. There, it is possible to make
settings and call up stored data.
STOP

Operation
8
6.3 Screen saver
A screen saver appears if you do not make any screen entries for a
certain length of time when the machine is switched on. The screen
goes dark if a further period of time elapses without any entries.
Touching the screen switches it back on.
INFO: The screen saver does not appear unless the machine is
filled. There is no screen saver in the PIN menu (13). The times
for the screen saver can be changed by the Winterhalter service
technician (17.1).
7 Operation
7.1 Making ready for operation
This explains how to make the machine ready for operation. You can also program the machine to switch on
automatically at a certain time (13.4) and be ready to operate about 15 –25 minutes later (depending on
the water inlet temperature and the machine size).
7.1.1 Before switching on the machine
Open the water stopcock in the building. There may be up to three stopcocks depending on the size of
the machine and its level of equipment.
Switch on the mains disconnector in the building or the built-in mains disconnector on the machine.
For your own safety, test the residual-current circuit breaker (RCCB) installed in the building by pressing
the test button.
Open the doors and check that all filters (strainers, filter inserts), barrier curtains and washing arms are in
place.
Check that the grease filter at the machine infeed is in place.
Close all doors.
Warning
When using chemicals, comply with the safety notes and dosage recommendations printed on
the packaging.
Wear protective clothing, protective gloves and protective goggles when handling chemicals.
Do not mix different detergent products together.
Check whether there is detergent or rinse aid in the storage tanks (drum or container). Top them up in
good time or renew the storage tanks so that the washing result will not be impaired. Depending on the
machine equipment level, the screen may also display when the storage tanks are empty.
If there are any swivelling table elements (e.g. roller conveyor) present, fix them in their working position.

Operation
9
7.1.2 Switching on
Screen 01
Touch the screen surface with your fingertips.
Screen 01 appears.
Press the button (1) for about 2 seconds until the next screen menu
appears.
The tanks of the machine are automatically filled and heated at
the same time.
Detergent is dosed into the last washing tank (assuming dosing
equipment is connected). Detergent is dosed into the washing
tanks upstream of this one during ongoing operation.
Once the rated level has been reached in all tanks, the
animated temperature symbol appears on the screen until the
rated temperatures have been reached.
Screen 03
The temperature symbol disappears as soon as the rated
temperatures have been reached. The machine is ready
(screen 03).
INFO: The machine is supplied from the factory programmed so that it
can be started as soon as the rated level in the tanks is reached.
If you are working according to HACCP directives, the Winterhalter
service technician can program the machine so the operating
personnel cannot start it until the rated temperatures have also been
reached.
7.2 Washing with the standard programmes
The machine can be operated with three different transport speeds.
Intensive programme;
Transport at slow speed
For heavily soiled dishes
Normal programme;
Transport at medium speed
For normally soiled dishes
Rapid programme;
Transport at high speed
For lightly soiled dishes
The normal programme and the intensive programme ensure the contact time between the dishes and the
tank water of at least 2 minutes as required by DIN 10510.
The rack capacity or plate capacity per hour depends on the machine model.

Operation
10
7.2.1 Starting / stopping transport
Touch one of the three buttons (3 / 4 / 5) for the transport
speed.
The drive system starts. This is indicated by the symbol.
If you want to change the transport speed: Touch one of the
other buttons (3 / 4 / 5).
If you want to stop the drive system: Touch the “STOP” button (6).
Touch the button if you want to wash containers such as
catering containers (7.2.5)
7.2.2 Having the transport run backwards
In case any object gets jammed in the drive system, you can have the conveyor belt / push bar run
backwards.
Press the “STOP” button (6) for 5 seconds.
The conveyor belt / push bar runs backwards for a defined distance and then stops again.
Remove the object.
7.2.3 Washing (MTF series machines)
Remove general debris (left-over food, serviettes, etc.) from the crockery.
Place plates, trays and the like onto the conveyor belt with their hollow profile facing towards the
machine.
Place bowls on the conveyor belt with their hollow side downwards.
Sort cups, glasses and cutlery into suitable washing racks and place them on the conveyor belt.
Examples
Plates
Cups
Cutlery
Small containers
Bases
Trays
INFO: Bars are available as accessories for placing between the fingers of the conveyor belt. The washing
racks can then be placed on the bars.
INFO: The individual zones switch on automatically as soon as the crockery enters the zone.

Operation
11
If possible, do not remove the washed crockery from the conveyor belt until it reaches the end of the
unloading zone so that it has sufficient time to dry by itself. For continuous washing, you should remove
the crockery before it actuates the stop switch and the transport is switched off.
IMPORTANT: See also point 10 “Organisation of the washing process” for information about optimum
working sequences and about hygiene in the washing kitchen. The leaflets produced by the VGG (Verband
der Hersteller von gewerblichen Geschirrspülmaschinen e.V. / Association of Manufacturers of Commercial
Dishwashing Machines, based in Hagen, Germany) are helpful in this regard.
7.2.4 Washing (MTR series machines)
Remove general debris (left-over food, serviettes, etc.) from the crockery.
Place plates, trays and the like into the washing racks with
their hollow profile facing forwards.
Place bowls in the washing racks with their hollow side
downwards.
Sort cups, glasses and cutlery into suitable washing racks.
Spray the crockery with cold water using a hand shower so
that as little debris as possible is carried into the machine.
(More debris equates to more detergent consumption).
Push one washing rack after another into the machine.
INFO: The individual zones switch on as soon as a washing rack enters the zone.
Leave the washing racks on the outfeed table for as long as possible until the crockery is dry. For
continuous washing, however, you should remove the washing racks from the outfeed table before the
stop switch is actuated and the transport is switched off.
IMPORTANT: See also section 10 “Organisation of the washing process” for information about optimum
working sequences and about hygiene in the washing kitchen. The leaflets produced by the VGG (Verband
der Hersteller von gewerblichen Geschirrspülmaschinen e.V. / Association of Manufacturers of Commercial
Dishwashing Machines, based in Hagen, Germany) are helpful in this regard.
7.2.5 Container programme
Application:
A programme for washing containers such as catering containers
Default settings:
Washing with medium transport speed (>>)
The other speeds (>; >>>) can also be selected after the start
The pump in the rinse zone is switched off

Operation
12
7.2.6 Breaks in operation
Do not switch the machine off during breaks, so as to maintain the rated temperatures. The drive system
continues to run for about 5 minutes after the crockery has exited the rinse zone. The selected transport
speed remains set. You can continue working straight away after the break.
After the break in operation:
MTF series: Start the conveyor belt drive by pressing the round button on the end of the machine
or by using the screen, in which case you must touch one of the buttons for the transport speed.
MTR series: Push a washing rack past the transport pawls into the machine until the drive starts.
7.3 Washing with the special programmes
Various special programmes are available depending on the machine equipment level. The Winterhalter
service technician can alter the default settings if required.
Available special programmes:
Glasswashing programme
Rinsing with osmosis water (can be switched on)
Rinsing with softened water and osmosis water
(cannot be changed, no screen display)
Glasswashing programme and rinsing with osmosis water (can be
switched on)
7.3.1 Glasswashing programme
Default settings:
Washing with slow transport speed
The other speeds can also be selected after the start
Pre-rinse zone (if installed) switched off
Rinsing with osmosis water (if connected)
Reduced rinse temperature
Heating of the drying zone (if installed) switched off; only with blower
INFO: Touch the button if you do not want rinsing to be performed with osmosis water.
7.3.2 Rinsing with osmosis water (can be switched on)
Default setting:
Preselected in the glasswashing programme
Can be switched on for all other programmes
Both rinse lines are operated with osmosis water as soon as the softened water has been displaced by
osmosis water in the pipes of the rinse system.
7.3.3 Rinsing with softened water and osmosis water (cannot be changed)
In all programmes, rinsing is performed half and half with softened water and osmosis water. This feature is
not displayed on the screen.

Operation
13
7.3.4 Example: Washing in the glasswashing programme and rinsing with osmosis water (can be
switched on)
Touch button (9). Result
Button (9) is active
Button (10) is active. Rinsing is done with osmosis
water.
Button (5) is available; buttons (3) and (4) are blocked
Touch button (10) if you do not want rinsing to be performed with osmosis water
Button (10) is dark.
Touch button (5).
The conveyor belt or the rack conveyor transport runs at slow speed.
Sort the glasses into suitable washing racks.
Place the washing racks onto the conveyor belt or push the washing racks into the machine.
Touch button (3) or (4) if you want to wash at a higher transport speed.
Remove the washing racks at the end of the unloading zone or the outfeed table.

Operation
14
7.4 Routine checks
Touch the button to call up the INFO menu (12).
INFO: The display depends on the size of the actual machine
The screen shows the following information in symbolic form:
(11) The tanks with the current temperatures
(12) Rinsing with the current temperatures for lines 1 and 2
INFO: Only one temperature is displayed for machines with reduced rinse or for steam-heated
machines, as the temperatures is identical for both rinse lines.
(13) Working direction of the machine
Fault messages (if installed)
Events (e.g. Machine ON, Machine OFF, Ready, Start >, Start >>, Start >>; STOP, etc.)
Tell the Winterhalter service technician about the fault messages.
Check the displayed values with the temperatures specified by DIN 10510. (17.1).
Warning
When using chemicals, comply with the safety notes and dosage recommendations printed on
the packaging.
Wear protective clothing, protective gloves and protective goggles when handling chemicals.
Do not mix different detergent products together.
Check whether there is detergent or rinse aid in the storage tanks (drum or container). Top them up in
good time or renew the storage tanks so that the washing result will not be impaired.
Check that the crockery is cleaned.
Warning
Put on protective clothing and protective gloves before holding parts that are covered with tank
water (filters, washing arms, curtains, etc.).
Open the doors and clean the strainers if they are excessively contaminated. There is no need to drain
the water in order to do this.
Reinsert the strainers.
Clean the interior of the machine if it is excessively contaminated.
Close the doors.
Drain the tank in the first zone if it is excessively contaminated (7.5).

Operation
15
7.5 Water change in zone 1
If the tank in the first zone is very heavily contaminated, it can be drained separately from the other tanks
and refilled.
Screen 03 Screen 05
Touch button (7).
This stops the drive.
Screen 05 appears.
Touch button (8).
The tank of the first zone is drained, refilled and heated up.
Touch button (8) again if you want to interrupt the procedure.
INFO: For larger machines, the Winterhalter service technician can alter the programming if requested so
that several tanks can be drained.
7.6 Switching off the machine
Press the on/off button (1).
The screen goes dark and the machine is switched off. The tanks remain filled, but they are no longer
kept up to temperature.
Warning
The machine remains live until the built-in mains disconnector or the mains disconnector in the
building is switched off.
Proceed as described in point 8.1 if you want to drain the tanks and clean the machine at the end of a
working day.

Maintenance and care
16
8 Maintenance and care
Warning
Do not spray the machine or direct vicinity (walls and floor) with a water hose, steam jet or high-
pressure cleaner.
When cleaning the floor, take care to avoid flooding the substructure of the machine, in order to
prevent the uncontrolled entry of water.
8.1 Every day
8.1.1 Cleaning the grease filter
The grease filter protects the exhaust air system and the heat
exchanger (if installed) against a buildup of grease. The grease
filter must be cleaned daily in order to function properly.
Remove the grease filter.
Place the grease filter onto a washing rack or the conveyor
belt and clean it in the machine at slow transport speed (>).
Reinsert the grease filter.
8.1.2 Cleaning programme
The machine is equipped with a cleaning programme that assists you in cleaning the interior of the machine.
The programme runs automatically. After its first part, you can clean the interior of the machine manually
with a hose and brush if required. The interior is automatically rinsed and drained during the second part.
INFO: If one of the doors is opened while the cleaning programme is running, the programme stops and has
to be restarted.
Starting the cleaning programme
Screen 03 Screen 05 Screen 05
Touch button (7).
This stops the drive.
Screen 05 appears.
Touch button (7). Touch button (7) again if you want to interrupt the procedure.
The cleaning programme is started:
Button (25) “Clean interior” appears but cannot be pressed yet.
The circulating pumps are activated in order to rinse out the interior of the machine with tank water.
The heat exchanger is rinsed out with hot water (OPTION).
The drive system runs.

Maintenance and care
17
Roof cleaning jets clean the interior of the machine with hot water from the rinse zone.
All tanks are drained.
The “Clean interior” button (25) flashes once all the tanks have been emptied.
If required, you can now clean the interior manually with a hose and brush. The time
shown on the button counts down from 5 minutes. The time displays when the
cleaning programme will automatically finish, assuming you do not want to clean the
interior manually.
If you do not want to clean the interior manually:
Touch button (25).
All tanks are drained, washed out with hot water and drained again.
The machine switches itself off afterwards.
Cleaning the interior
Warning
Put on protective clothing and protective gloves before holding parts that are covered with tank
water (filters, washing arms, curtains, etc.).
Open the doors and remove the curtains.
Clean the curtains.
Remove the washing arms (individually or in their cassette).
Wash out the washing arms if the jets are blocked.
Remove and clean the strainers and the filter inserts over the tank floor drains.
If the interior of the machine is dirty: Clean the interior of the machine with a sponge and a brush.
If necessary, you can spray the interior with a hose.
Use a brush to clean the filters covering the pump inlet openings. The filters can be removed if necessary.
Reinsert the filter inserts into the tank floor drains.
Reinsert the strainers.
Reinsert the washing arms.
Reinsert the curtains. The curtains are designed (coded) so they cannot be inserted in the wrong position.
Close the doors.

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18
Finishing the cleaning programme
Close the doors.
Touch button (7).
All tanks are drained, washed out with hot water and drained again.
The machine switches itself off afterwards.
Cleaning the outside of the machine
Close the stopcock in the water pipe in the building. There may be up to three stopcocks depending on
the size of the machine and its level of equipment.
Switch off the mains disconnector in the building or the built-in mains disconnector on the machine.
MTF series machines:
Clean the filters in the loading zone.
Clean the floor filter in the loading zone.
Clean the loading and unloading zones.
MTR series machines:
Clean the connected table system.
Clean the exterior surfaces with a stainless steel cleaner and stainless steel polish.
8.1.3 Checking external water treatment
Check whether sufficient regeneration salt has been added.
8.2 Every month
8.2.1 Cleaning the roof cleaning jet
INFO: There is a roof cleaning jet in each of the machine's zones.
Cleaning
Unscrew the knurled screw (1).
Remove the roof cleaning jet (2) and rinse it out thoroughly with
water.
Check that the jet is free of blockages.
Re-install the roof cleaning jet. The marking "TOP" must point
upwards. The part number must be able to be read from below.
8.2.2 Cleaning the exhaust air system
Remove the grease filter.
Clean the exhaust air pipes with a water hose and hot water. The water flows back into the tank in the last
zone. If necessary, use a degreasing agent and a long brush.