Meiko UPster U 400 M2 User manual

Professional warewashing technology
9760441 / Valid from: 2018-02 / Update: 2019-09 www.meiko.info
Operating instructions
UPster U 400 M2
Glass- and dishwasher
Translation of the "Original operating instructions"
CAUTION – read operating instructions before using the
machine!
EN

Operating instructions Glass- and dishwasher
UPster U 400 M2
9760441 2 / 54
Design and construction subject to change without prior notice!
Contents
1NOTES ON THE OPERATING INSTRUCTIONS .........................................................4
1.1 Product identification 5
1.2 Delivery contents 5
1.3 Related documents 5
1.4 Name and address of manufacturer 6
2LIABILITY AND WARRANTY.......................................................................................7
3SAFETY........................................................................................................................8
3.1 Symbol explanation 8
3.1.1 Notes in the instructions 8
3.1.2 Safety symbols in the instructions 9
3.2 Requirements for the personnel 10
3.3 Residual risks 11
3.4 Intended use 12
3.5 Foreseeable misuse 12
3.6 Fundamental safety and accident prevention regulations 13
3.7 What to do in the event of an emergency 15
4PRODUCT DESCRIPTION.........................................................................................16
4.1 Functional description 16
4.2 Overview illustration 16
4.3 Type label 17
4.4 Blue operating concept 18
4.5 Dosing equipment 18
5TECHNICAL DATA.....................................................................................................19
6ASSEMBLY ................................................................................................................19
6.1 Prerequisites for assembly 20
6.1.1 Checking the condition at delivery 20
6.1.2 Requirements for the installation area 20
6.1.3 Requirements for the waste water connection 20
6.1.4 Requirements for the fresh water connection 20
6.1.5 Requirements to the electrical connection 21
6.2 Transport 23
6.3 Perform assembly 23
7COMMISSIONING ......................................................................................................24
7.1 Check prerequisites for commissioning 25
7.2 Perform commissioning 25
8OPERATION/USE.......................................................................................................26
8.1 Operating panel 26
8.2 Detergent and rinse aid 27
8.2.1 Prepare dishwasher 27
8.3 Start up the machine 29

Operating instructions Glass- and dishwasher
UPster U 400 M2
9760441 3 / 54
Design and construction subject to change without prior notice!
8.4 Washing 29
8.4.1 Putting away washware 29
8.4.2 Select wash programme 30
8.4.3 Start wash cycle 32
8.4.4 Emptying the washware 33
8.5 Shutting down the dishwasher 34
8.6 Fill consumables 34
8.6.1 Refill of internal storage container 34
8.6.2 Replace canister 35
8.7 Perform a manual water change 36
8.8 Malfunctions 37
8.8.1 Messages 38
8.9 Change authorisation level 41
8.10 Service level 42
8.10.1 View parameters 42
8.10.2 Ventilating the pipes 43
8.11 Dosing system level 43
9MAINTENANCE AND CLEANING .............................................................................44
9.1 Maintenance 45
9.2 Maintenance table 46
9.3 Daily cleaning 48
9.4 Cleaning the stainless steel surfaces 49
9.5 De-scaling 49
9.6 Spare parts 50
10 DISMANTLING AND DISPOSAL ...............................................................................50
10.1 Disposal of packaging materials 50
10.2 Disposal after dismantling 50
11 ABBREVIATIONS.......................................................................................................51
12 INDEX .........................................................................................................................51
13 NOTES........................................................................................................................53

Operating instructions Glass- and dishwasher
UPster U 400 M2
Notes on the operating instructions
9760441 4 / 54
Design and construction subject to change without prior notice!
1 Notes on the operating instructions
Dear customer,
We are delighted about the confidence you have shown in our products.
It is very important to us that you should enjoy using and benefit from MEIKO prod-
ucts and that they should make your work easier.
The operating instructions help familiarise the operator of this dishwashing machine
with its installation, modes of operation, use, safety instructions and servicing.
The operating instructions are an integral part of the dishwashing machine and must
be passed on to all subsequent owners or users.
Please read these operating instructions through carefully before use. Please also
take note of any additional operating instructions for accessories and integrated third
party components.
Only through understanding these operating instructions can errors be avoided and
trouble-free operation of the dishwasher guaranteed. By paying attention to the op-
erating instructions, hazards can be avoided, repair and breakdown costs reduced
and the reliability and durability of the dishwashing machine can be increased.
Retain these operating instructions for the entire lifetime of the dishwashing ma-
chine. The storage location must be protected against moisture. Please store the
operating instructions in a readily accessible location close to the dishwashing ma-
chine.
Ensure that all persons who work with or on the dishwashing machine have read
and understood the operating instructions.
The operating instructions must be available in the local language for each EU coun-
try. If this is not the case, the washing machine must not be commissioned.
The original operating instructions in German and all operating instructions in all lan-
guages for EU countries can be downloaded from the following address: https://part-
nernet.meiko.de
The entire technical documentation are available free of charge. Additional copies
are available for a nominal fee.
Notes on use of the operating instructions:
• A bullet point (•) designates an action step.
• Numerals (1.) designate several action steps that must be executed in the
specified sequence.
• Position numbers in the text that refer to position numbers in figures are shown
in parentheses:
(1)Position number 1 in the illustration
• The text is always below the figure and refers to it until a new image follows.

Operating instructions Glass- and dishwasher
UPster U 400 M2
Notes on the operating instructions
9760441 5 / 54
Design and construction subject to change without prior notice!
1.1 Product identification
These operating instructions apply to the following machine types:
Glasswasher UPster U 400 M2.
Name UPster U 400 M2
Meaning Product family Undercounter Rack dimensions 400x400 Model 2
1.2 Delivery contents
The delivery contents include:
• 1x glasswasher UPster U 400 M2
• Matching racks for glassware and dishes depending on machine model
• Connecting hoses for fresh water and waste water
• Documentation
1.3 Related documents
The following documents provide additional information to these operating instruc-
tions:
• Installation drawing
• Wiring diagram
• Service instructions (only for MEIKO authorised service technicians)

Operating instructions Glass- and dishwasher
UPster U 400 M2
Notes on the operating instructions
9760441 6 / 54
Design and construction subject to change without prior notice!
1.4 Name and address of manufacturer
Should you require any further information, or in case special problems arise that
are not dealt with in sufficient detail in the operating instructions, you can request the
required information from the following addresses:
MEIKO Maschinenbau GmbH & Co. KG
Englerstraße 3
D - 77652 OFFENBURG
Telephone: [phone]
http://www.meiko.de
[e-mail]
or:
Name and address of the MEIKO branch, manufacturer’s agent or MEIKO-author-
ised service partner
(Enter company’s stamp or address)
All rights, including photo-mechanical reproduction and storage on electronic media,
are reserved to MEIKO Maschinenbau GmbH & Co. KG. Any commercial use or dis-
tribution of the texts, illustrated models, drawings and photographs within this prod-
uct is not permitted.
It is not permitted to reproduce, store or pass on the operating instructions, either in
whole or in part, or transfer or translate it, in any form or with any medium, without
prior written approval.
MEIKO wishes you much pleasure and success.
© 2019 MEIKO Maschinenbau GmbH & Co. KG

Operating instructions Glass- and dishwasher
UPster U 400 M2
Liability and warranty
9760441 7 / 54
Design and construction subject to change without prior notice!
2 Liability and warranty
All of MEIKO’s obligations arise from the relevant purchase contract, which also con-
tains the entire and only valid guarantee provisions. These contractual guarantee
provisions shall be neither extended nor restricted as a result of any explanations
given in the instructions.
Further, we draw your attention to the fact that the content of these instructions do
not form part of a former or existing agreement, promise or legal relationship and
does not modify such a point.
If you follow the instructions in this operating manual carefully, your dishwashing
machine will always give you total satisfaction and will have a long service life.
The delivered system corresponds to the state of technology and safety regulations
valid at the time of production/delivery.
The information, data and notes specified in the operating instructions correspond to
the latest version at the time of printing. No claims for already delivered systems
may be asserted based on these statements, illustrations and descriptions.
Claims must be reported to the manufacturer immediately after determination of the
defect or error. Liability claims for personal injury or material damage as well as for
operational problems are excluded if they are due to one or more of the following
causes:
• Unintended use.
• Improper installation, commissioning, operation and maintenance.
• Operation of the machine or system with defective safety devices or improperly
attached or non-functioning safety and protective devices.
• Noncompliance with the notes in the operating instructions regarding transport,
storage, mounting, commissioning, operation and maintenance.
• Unauthorised design changes or settings on the machine or system beyond the
intended purpose.
• Improper monitoring of parts subject to wear.
• Use of wear and replacement parts that are not from the manufacturer.
• Improperly performed repairs, inspections or maintenance.
• Catastrophes due to human-induced events or force majeure.

Operating instructions Glass- and dishwasher
UPster U 400 M2
Safety
9760441 8 / 54
Design and construction subject to change without prior notice!
3 Safety
3.1 Symbol explanation
3.1.1 Notes in the instructions
In these operating instructions, important notes for safety are specially marked with
symbols. Please always observe these notes to avoid accidents and damages to the
system.
Warnings
Danger
Short descriptio
n of the danger:
The signal word
DANGER designates an immediately threatening danger.
Failure to observe this leads to very serious injuries or death
Warning
Short description of the danger:
The signal word
WARNING designates a possible danger.
Failure to observe this can lead to very serious injuries or death.
Beware
Short description of the danger:
The signal word
BEWARE designates a possible danger.
Failure to observe this can lead to minor to medium injuries.
Application information
Caution
Short description:
The signal word
Caution designates a possible danger.
Failure to observe this can lead to damage to the machine or system.
Note
The signal word Note designates further information on the machine / system or its
application.

Operating instructions Glass- and dishwasher
UPster U 400 M2
Safety
9760441 9 / 54
Design and construction subject to change without prior notice!
3.1.2 Safety symbols in the instructions
The following note and danger symbols are used both in the document and on the
machine. Observe these symbols and signs on the machine to avoid personal injury
and material damage!
The symbols have the following meanings:
Symbol Meaning
Warning of hazardous areas
Warning of dangerous electric voltage
Warning of the danger of hand injuries
Caution, keep hands away from parts that bear this warning symbol. The danger ex-
ists that hands can be crushed, pulled in or otherwise injured.
Warning of hot surfaces and liquids
Warning of the machine falling over
Warning of environmental damage
Do not spray with water
No drinking water
Access prohibited for persons with pacemakers
Eye protection must be used or protective glasses must be worn
Hand protection must be worn
Read the operating instructions
Disconnect before servicing or repair
Potential equalisation connection

Operating instructions Glass- and dishwasher
UPster U 400 M2
Safety
9760441 10 / 54
Design and construction subject to change without prior notice!
3.2 Requirements for the personnel
Commissioning, instructions, repairs, maintenance, assembly and installation of or
on MEIKO machines must only be carried out/authorised by MEIKO-authorised ser-
vice partners.
During operation it must be ensured that:
• Only adequately trained and instructed personnel are allowed to work on the
machine.
• Personnel responsibilities for operation, maintenance and repairs must be
clearly defined.
• Any personnel undergoing training are only allowed to work on the machine un-
der the supervision of an experienced person.
The required qualifications for performing specific work at the machine are deter-
mined by MEIKO.
Persons Trained oper-
ating staff
MEIKO author-
ised company
tradesman
MEIKO author-
ised service
technician
Activity
Installation/assembly 
Commissioning 
Operation, use 
Cleaning 
Check safety devices 
Troubleshooting 
Troubleshooting, mechan-
ical 
Troubleshooting, electrical * 
Maintenance 
Repairs 
* with training as an electrician
Note
The instructions must be acknowledged in writing.
Qualified staff, as defined by the operating Instructions, are persons:
• over 14 years of age,
• due to their training, experience and instruction are able to perform the required
activities,
• are authorised to perform the required activities by the person responsible for
safety of the machine,
• who have been trained in first aid and in the on-site rescue arrangements,
• have read and understood the operating instructions and corresponding safety
instructions and will follow them.

Operating instructions Glass- and dishwasher
UPster U 400 M2
Safety
9760441 11 / 54
Design and construction subject to change without prior notice!
3.3 Residual risks
Phase Activity Nature of the hazard Avoidance measure
Transport and
assembly
Loading and unloading
with forklift truck Crushing/impact
• Load-bearing capacity of the forklift
truck must be adequate for the weight of
the machine
• Please note the machine's centre of
gravity
• Secure to prevent slipping
Deposit at the installation
location Crushing/impact • Ensure that the ground beneath is capa-
ble of taking the load
• Ensure that the machine cannot tip
Install electrical connec-
tions Electric shock
• Only skilled personnel may connect up
the machine
• Adhere to the accident prevention regu-
lations
Commissioning Fill with
detergent/rinse aid Eye injury/health risks • Wear protective eyewear/gloves
• Avoid contact with skin and eyes
Operation
Wash cycle running
Scalding on inappropriate
opening of door • Do not open door during cycle
Dishwashing machine
catching fire due to over-
load or blockage of pump
motors
• Always use fine/coarse sieve when run-
ning machine to keep out foreign bodies
• Pre-wash washware
Loading and unloading
the dishwashing machine
Trapping of hand • To close the machine door, use the han-
dle designated for this purpose
Broken washware causing
cuts/severing
• Wash washware in the specially de-
signed rack in the dishwashing machine
• Place small items in the appropriate
rack inserts
• Washware must not come into contact
with rotating parts of the dishwashing
machine
Risk of snagging with
loose clothing or items of
jewellery
• Wear suitable work clothing and sturdy
shoes
• Do not wear rings, necklaces or other
pieces of jewellery
Slipping • Use non-slip floor coverings
Scalding
• If necessary, allow washware to cool
down
• If necessary, allow machine compo-
nents to cool down before touching
• Protective gloves recommended
Other activities
Injury through standing or
sitting on the open ma-
chine door
•
Ensure that nobody sits or stands on the
door
Swallowing of water in the
rinsing area
• Do not use the rinse water for food
preparation
• Do not drink the rinse water
Operation
Independent changes to
chemical dosing Breathing difficulties/suffo- cation • Only allow specialist personnel to adjust dosing
Refilling detergent/rinse
aid Eye injury/health risks • Wear protective eyewear/gloves
• Avoid contact with skin and eyes

Operating instructions Glass- and dishwasher
UPster U 400 M2
Safety
9760441 12 / 54
Design and construction subject to change without prior notice!
Phase Activity Nature of the hazard Avoidance measure
Maintenance and
cleaning
Any maintenance work Electric shock
• Before opening the covering panels, en-
sure the mains switch has been discon-
nected and secured so that it cannot be
turned on again
• Only specialist personnel may carry out
maintenance work
Cleaning or maintenance
Tripping/falling over open
door • Always close door after use
Scalding/burning • Allow machine components to cool
down before touching
• Wear protective gloves
Cleaning Poisoning
• Do not use aggressive cleaning or
scouring agents
• Only use descaling products suitable for
commercial dishwashing machines
• Wear protective gloves
Dismantling and
disposal
Dismantling Eye injury/health risks
• Wear protective eyewear/gloves
• Avoid contact with skin and eyes
• Where appropriate, clean hoses, dosing
system and machine parts with fresh
water
Loading and unloading
with forklift truck Crushing/impact
• Load-bearing capacity of the forklift
truck must be adequate for the weight of
the machine
• Please note the machine's centre of
gravity
• Secure to prevent slipping
3.4 Intended use
The dishwashing machine must only be used in accordance with its intended pur-
pose and as per these operating instructions. The dishwashing machine is intended
exclusively for commercial use.
The dishwashing machine is designed for cleaning dishes, cutlery, glassware,
kitchen utensils, baking trays and containers.
The washware must be suitable for dishwashing machines. If there is any doubt, a
consultation (size, version, basic suitability for dishwashing machine, etc) can be
carried out with MEIKO to confirm suitability ([e-mail]).
The following applications are expressly not intended:
• Processing hazardous substances in the machine (health hazards, in particular
toxic, highly or extremely flammable and explosive substances).
• Operating the machine in an explosive environment.
3.5 Foreseeable misuse
Any use which is not detailed in the section on "Intended use" is contrary to the in-
tended use!
The dishwashing machine must not be used for these foreseeable misuses:
• Kitchen utensils with electronic components
• Textiles, oven cloths or steel sponges
• Utensils that must not come into contact with foodstuffs (e.g. ashtrays, candle-
sticks, etc)
• Living creatures

Operating instructions Glass- and dishwasher
UPster U 400 M2
Safety
9760441 13 / 54
Design and construction subject to change without prior notice!
• Food for subsequent consumption
• The preparation of foodstuffs
• Iron utensils
• Support grids of cooking hobs / gas hobs
• Wash ware that is not dishwasher-proof
• Introducing service water into the local waste water system
• Standing or sitting on the open machine door
3.6 Fundamental safety and accident prevention regulations
Note
The following safety instructions aim to protect operating personnel as well as third
parties and the dishwashing machine itself.
Please take note of the information in these instructions and the signs on the dish-
washing machine.
However, safety can only be guaranteed during operation if all necessary measures
are taken.
The operator of the machine has an obligation of care to ensure that these
measures are planned for and also to check that they are correctly implemented.
The operator must ensure in particular that:
• The dishwashing machine is only used in accordance with its intended purpose.
In the event of the machine being used or operated contrary to this, damage or
risks may arise.
• In order to guarantee functionality and safety, only original spare parts supplied
by the manufacturer may be used.
• The safety of the dishwashing machine is not impaired by the subsequent in-
stallation of a dosage system.
• Only appropriately qualified and authorised personnel operate, maintain and
repair the dishwashing machine.
• No one sits or stands on the open door.
• Staff are regularly trained in all questions relating to occupational safety and
environmental protection and are familiar with the operating instructions and, in
particular, the safety information that they contain.
• The area around the machine is assessed with reference to the risk to other
people, e.g. children; people with physical, sensory or mental impairments;
people lacking in knowledge or experience. In case of doubt, special optional
initiation functions other than conscious, intentional operation (i.e. operation
from the screen) are to be deactivated.
• The dishwashing machine is only operated in perfect, functional condition, all
protection devices and covers are installed.
• The safety and switching equipment is regularly tested to ensure it is function-
ing correctly.
• Dishwashers accessible from behind may only be operated with a rear cover.
• The required personal protective equipment is made available to and worn by
maintenance and repair personnel.
• A functional test on all dishwashing machine safety systems is carried out at
every regular maintenance appointment.
• None of the safety and warning notices affixed to the dishwashing machine it-
self are removed and all are legible.
• Upkeep (maintenance and inspection) is carried out on optional vendor parts
according to the requirements in the corresponding instructions.

Operating instructions Glass- and dishwasher
UPster U 400 M2
Safety
9760441 14 / 54
Design and construction subject to change without prior notice!
• Following installation, commissioning and handing over of the dishwashing ma-
chine to the customer/operator, no modifications are made (e.g. electrical or
mechanical machine components).
Information on operating the dishwashing machine:
• Only operate the dishwashing machine under the supervision of trained person-
nel.
• Do not use the dishwashing machine if you are unsure about its operation.
• Always close all doors and flaps.
• Wear suitable work clothing.
• When working on the dishwashing machine, wear appropriate protective
gloves.
• Allow machine components and washware to cool down before touching.
- At the end of operation:
– Switch off the dishwashing machine at the on-site mains disconnection de-
vice. This is located in the electricity supply pipe for the machine.
– Close the on-site stop valve in the fresh water supply line.
Information on use of detergent and rinse aid:
• Only use detergents and rinse aid suitable for commercial dishwashing ma-
chines.
• Acquire information from the manufacturers of these products.
Detergent and rinse aid may contain hazardous substances. The wash water used
during operation contains chemicals.
• Never drink the wash water.
• Contact a doctor immediately if wash water is swallowed.
• Pay attention to the manufacturers' hazard warnings on the original canisters
and safety data sheets.
• When handling chemicals, wear appropriate protective gloves and safety eye-
wear.
• Do not confuse detergent and rinse aid.
• Ensure that the suction connections for the dishwashing machine are correctly
connected to the canisters.
Information on the use of descaling agents
Residue from descaling agents can cause damage to the plastic components and
sealing materials in the machine.
• Acquire information from the manufacturers of these products.
• Please observe the manufacturer's hazard warnings.
• Thoroughly remove any residue after use.
Information on cleaning the machine
Foam can cause malfunctions in the dishwashing machine and a poor washing re-
sult.
• Do not use a foaming manual dishwashing detergent for precleaning or for
cleaning the machine.
• Allow machine components and washware to cool down before touching.
Information on cleaning the surrounding area
When cleaning the surrounding area, the machine can be damaged by aggressive
external influences (steams, detergents) or the ingress of water.

Operating instructions Glass- and dishwasher
UPster U 400 M2
Safety
9760441 15 / 54
Design and construction subject to change without prior notice!
• Do not use aggressive detergents (e.g. aggressive tile cleaner).
• If installed at ground level, never allow the surrounding area to flood.
Notices on electrics and electronics
Depending on requirements, the dishwashing machine is to be connected to a sin-
gle-phase (230 V) or a three-phase (400 V) earth wire system. There is a danger to
life if exposed parts and supply lines under electrical voltage are touched.
• Please take note of the warning information in these instructions and the signs
on the dishwashing machine.
• Whenever you are working on electrical components in the machine, ensure
that electrical connections are physically secure.
• Whenever you are working on electrical components in the machine, check
wires and cables for any potential damage and replace, if necessary.
Incorrect cleaning can cause damage to the electronics.
• The dishwashing machine, switch cabinets and other electrical components
must never be sprayed with a hose or high pressure cleaner.
• Ensure that no water can enter the machine by accident.
Notice on non-ionising radiation
The dishwasher does not specifically generate non-ionising radiation. For tech-
nical reasons, only the electric appliances emit non-ionizing radiation.
In the immediate vicinity of the dishwashing machine, the influence of active im-
plants (e.g. cardiac pacemakers, defibrillators) can be ruled out with a high degree
of probability.
3.7 What to do in the event of an emergency
In emergency situations, rapidly switching off the machine will help prevent personal
injury or material damage.
• Disconnect the dishwashing machine from the power supply using the locally
available mains switch.

Operating instructions Glass- and dishwasher
UPster U 400 M2
Product description
9760441 16 / 54
Design and construction subject to change without prior notice!
4 Product description
4.1 Functional description
The UPster U 400 M2 is a commercial glasswasher with a square rack.
The dishwasher has one wash and one final rinse cycle.
A temperature regulator maintains the set wash temperature of between 58-60 °C. A
rotary pump circulates the water from the wash tank into the wash nozzles. The wa-
ter jets hit the wash ware from different directions. This ensures uniform washing
results.
The wash cycle is followed by a fresh water final rinse. The items being washed are
rinsed with hot fresh water at 80-83 °C (65 °C for the glass programme) via a sepa-
rate nozzle system. This heats up the wash ware for the following drying process.
At the same time, the final rinse water is used to regenerate the rinse water; this re-
duces the degree of soiling of the rinse water.
4.2 Overview illustration
Exterior view
1
Operating panel (see page 26)
1
Potential equalisation connection
2 Door handle
2 Fresh water connection G ¾”
3
Door
3
Electrical connection
4 Detergent storage tank (option)
4 Waste water connection
5
Storage tank for rinse agent (option)
5 Connections for detergent and rinse aid
6 Height-adjustable foot

Operating instructions Glass- and dishwasher
UPster U 400 M2
Product description
9760441 17 / 54
Design and construction subject to change without prior notice!
Interior view
1 Operating panel 2 Rack runner
3 Rotating arm wash system 4 Filter with stand pipe
4.3 Type label
The rating plate is located on the left side or right side in the lower rear section of the
dishwasher. An additional rating plate is located on the switch cabinet behind the
front panel.
The following information can be found on the rating plate:
1 Name and address of manufacturer
2 Machine type
3 Model name
4 Serial number
5 Current type
6 Electrical connection
7 Rated power boiler
8 Water pressure
9 Boiler capacity
10 Steam connection
11 Year of manufacture
12 CE mark
13 IP protection rating

Operating instructions Glass- and dishwasher
UPster U 400 M2
Product description
9760441 18 / 54
Design and construction subject to change without prior notice!
4.4 Blue operating concept
1 Filter 2 Stand pipe
3 Nozzle cap 4 Retaining screw for wash system
The parts of the dishwasher that must be touched by the operator in operation and
in daily use are blue. And so after a short briefing, operators know intuitively that
they have to remove and clean the wash system, tank cover sieve and filter, for ex-
ample.
4.5 Dosing equipment
Caution
Reduced durability of dosing units and other dishwasher components
The use of inappropriate detergent and rinse aid can corrode the dosing units and
other machine components.
• If necessary: Consult with MEIKO and the detergent supplier.
Note
Information on cleaning chemicals, see chapter “Detergent and rinse aid” on page
27.
Detergent dosing
The detergent dosing unit is designed to automatically add liquid alkaline deter-
gent to the dishwashing machine (the manual addition of detergent products is not
recommended).
The detergent is transported from the storage container to the wash tank via a
conveyor pipeline. The dosing equipment is self-priming. Dosing occurs during
each filling cycle and at the beginning of each programme cycle via timer control.
Normally, a dose of approx. 2 ml of detergent per litre of tank water is the correct
concentration. This may, however, be increased up to 5 ml/l or reduced to 1 ml/l
depending on the water quality, the washware and degree of soiling.
Rinse aid dosing
The rinse aid dosing unit is designed to automatically dose the rinse water with liq-
uid acid rinse aid.
The rinse aid is pumped out of the storage container into the rinse water boiler
supply line through a conveyor pipeline. The dosing equipment is self-priming.
Dosing takes place for each full cycle and each programme cycle.
The correct dosage leads to an even water film.
In case of overdosing, bubbles and stripes will form, which means that the dosage
needs to be reduced.
In case of under-dosing, water drops remain on the washware which means that
the dosage needs to be increased.

Operating instructions Glass- and dishwasher
UPster U 400 M2
Technical data
9760441 19 / 54
Design and construction subject to change without prior notice!
Dosing equipment lifetime
The components of the dosing system are subject to high demands:
• Exposure to high concentrations of cleaning products
• Mechanical strain from peristalsis (e.g. by the peristaltic tube)
• High (ambient) temperatures
• Long operating hours
It is therefore essential that the operator has these parts (i.e. wear and tear parts)
checked and serviced regularly. However, it is extremely difficult to prescribe exact
life spans when the parts will need to be replaced since conditions differ greatly
from machine to machine.
The materials found in the dosing system and especially in the peristaltic tubes are
not suitable for use with all detergents and rinse aids available on the market. In
certain cases, they must be adapted to the relevant conditions. This will require
agreement from the Service Technician (MEIKO authorised) or the detergent sup-
plier.
This maintenance guideline (see page 46) is therefore simply a non-binding rec-
ommendation.
Example image of dos-
ing equipment with peri-
staltic tube
5 Technical data
MEIKO has created a dimensional drawing that shows machine dimensions as well
as connection and consumption values.
Further data should be taken from the MEIKO dimensional drawing.
Net weight
Versions Weight approx.
UPster U 400 M2 73 kg
Noise emission
Workplace noise level LpA ≤70 dB (A).
6 Assembly
Warning
Danger of injury due to entry into a danger zone
Unauthorised persons might be in or enter the danger zone during transport, as-
sembly, commissioning, maintenance and repair work. This can lead to injuries.
• Only qualified persons should perform work at and with the machine.
• Remove unauthorised persons from the danger zone.
• Block off danger area and mark it for third parties.
• Never remove or disable safety devices on the machine.

Operating instructions Glass- and dishwasher
UPster U 400 M2
Assembly
9760441 20 / 54
Design and construction subject to change without prior notice!
6.1 Prerequisites for assembly
6.1.1 Checking the condition at delivery
• Check that the delivery is complete immediately after receiving it by comparing
it with MEIKO’s order confirmation and/or the delivery note.
• If applicable, submit a claim for any missing parts immediately to the freight for-
warder and notify MEIKO.
• Check the machine for transportation damage.
Note
If there is any suspicion of transportation damage, the shipping company and
MEIKO must be informed immediately in writing. Photograph any damaged parts
and send the pictures to MEIKO.
6.1.2 Requirements for the installation area
The dishwashing machine is only frost-proof in as-delivered state or if equipped with
special features (optional: frost removal).
Installation of the dishwashing machine in an area where the ambient temperature is
below 0° C can result in damage to the internal water circuit components (e.g.
pump, solenoid valve, boiler, etc.).
• Ensure that the storage and installation locations are always frost free.
There is a danger of slipping in the working area due to the use of water.
• After assembly, put in place non-slip floor coverings in the working area based
on the general/location-specific safety regulations.
6.1.3 Requirements for the waste water connection
A waste water pump is optionally integrated into the drain pump.
• Connect the drainage hose to the locally available waste water pipe.
– For Australia only:
The drainage hose needs to have a watertight connection to a waste
fitting complying with AS 1589 AS 2887, a sanitary plumbing pipe or
fitting complying with AS/NZS 1260.
• Depending on the dishwasher application, a grease trap may be in-
cluded, based on the general/location-specific regulations.
6.1.4 Requirements for the fresh water connection
Fresh water connections and their components must be carried out in accord-
ance with local regulations, e.g. EN 1717/DIN 1988-100. The fresh water must
be of the same quality as drinking water in microbiological terms. This also
applies to processed water.
The basic model of the dishwashing machine is equipped with a safety device
against backflow in accordance with DIN EN 60335-2-58 or with an air gap (type AA
in accordance with EN 1717 or EN 61770). In the case of SVGW (Switzerland) and
other countries, a type EA safety device is also required in front of the connecting
hose, depending on the machine version.
An onsite stop valve must be built into the fresh water supply for the operating staff.
Installation components and materials must be suitable and permitted in accordance
with local regulations. A solenoid valve is integrated into the dishwashing machine's
fresh water line.