Hupfer UST/57-28 User manual

4330005_A0
Operating Instructions
Universal Crockery Dispenser
UST/57-28 | UST/57-28K | USTH/57-28 | USTUH/57-28 | EUSTH/57-28

Chapter 1Introduction
Page 2 Appliance Information
Universal Crockery Dispenser
UST/57-28 | UST/57-28K | USTH/57-28 | USTUH/57-28 | EUSTH/57-28 4330005_A0
1 Introduction
1.1 Appliance Information
Appliance designation Universal Crockery Dispenser
Appliance type/ -s UST/57-28 | UST/57-28K | USTH/57-28 | USTUH/57-28 |
EUSTH/57-28
Manufacturer HUPFER® Metallwerke GmbH & Co KG
Dieselstraße 20
48653 Coesfeld
PO 1463
D-48634 Coesfeld
[phone]
[phone]
www.hupfer.de
[e-mail]
Universal Crockery Dispenser
UST/57-28 | UST/57-28K | USTH/57-28 | USTUH/57-28 | EUSTH/57-28
Read these operating instructions carefully before the first operation of the appliance.
Ensure that sources of danger and possible faulty operations have been pointed out to the operating staff.
Subject to modifications
The products covered by these operating instructions have been developed taking into consideration the re-
quirements of the market and the latest technology. HUPFER®reserves the right to modify the products and
appertaining technical documentation in so far as the modifications are in the name of technological pro-
gress. The data and weights as well as the description of performance and functions assured in the order
confirmation as binding are always decisive.
Manual edition
4330005_A0

Introduction Chapter 1
Table of Contents Page 3
Universal Crockery Dispenser
4330005_A0 UST/57-28 | UST/57-28K | USTH/57-28 | USTUH/57-28 | EUSTH/57-28
1.2 Table of Contents
1Introduction 2
1.1 Appliance Information 2
1.2 Table of Contents 3
1.3 List of Abbreviations 5
1.4 Definitions of Terms 6
1.5 Orientation Guide 7
1.6 Notes on Use of Manual 8
1.6.1 Notes on the manual structure 8
1.6.2 Notes and their illustrations used in the chapters 8
2Safety Instructions 9
2.1 Introduction 9
2.2 Warning Symbols Used 9
2.3 Safety Instructions for Appliance Safety 9
2.3.1 Safety instructions for all appliances 9
2.3.2 Additional safety instructions for heated appliances 10
2.4 Safety Instructions for Cleaning and Care 11
2.5 Safety Instructions for Troubleshooting 11
2.6 Notes on Specific Hazards 11
3Technical Data and Description 12
3.1 Appliance Description 12
3.1.1 Optional special accessories 13
3.2 Appliance Data 14
3.3 Rating Plate 16
3.4 Intended Use 16
3.5 Improper Use 16
4Transport, Assembly, Putting into Operation and Decommissioning 17
4.1 Transport 17
4.2 Assembly (EUSTH/57-28 only) 17
4.3 Putting into Operation 19
4.4 Storage and Recycling 19
5Operation 20
5.1 Arrangement and Function of the Operating Elements 20
5.2 Adjustment of Stacking Platform 20
5.2.1 Spring adjustment 20
5.2.2 Adjustment of guide rails 22
5.2.3 Examples of crockery stack arrangements 22
5.2.4 Calculating the universal crockery dispenser capacity 23
5.3 Operation 24
5.3.1 Switching on the appliance 24
5.3.2 Loading the appliance 25

Chapter 1Introduction
Page 4 Table of Contents
Universal Crockery Dispenser
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5.3.3 Moving the appliance 26
5.4 Measures at the End of Operation 26
6Fault Detection and Troubleshooting 28
6.1 Security Measures 28
6.2 Notes on Troubleshooting 28
6.3 Fault and Action Table 28
7Cleaning and Care 29
7.1 Security Measures 29
7.2 Hygiene Measures 29
7.3 Cleaning and Care 29
7.4 Special Care Instructions 30
8Spare Parts and Accessories 31
8.1 Introduction 31
8.2 Spare Parts and Accessories List 31
9Declaration of Conformity 34

Introduction Chapter 1
List of Abbreviations Page 5
Universal Crockery Dispenser
4330005_A0 UST/57-28 | UST/57-28K | USTH/57-28 | USTUH/57-28 | EUSTH/57-28
1.3 List of Abbreviations
Abbreviation Definition
CE Communauté Européenee
European Community
DIN Deutsches Institut für Normung
German Institute for Standardisation, technical regulations and technical specifications
EC European Community
European Union
EN European Standard
Harmonised standard for the EU market
E/V Spare and wearing part
IP International Protection. The abbreviation IP and a further two-digit index specify the
protection class of a housing.
The first digit: Protection against ingress of solid foreign objects The second digit: Protection against ingress of
water
0 No protection against contact, no protec-
tion against ingress of solid foreign
objects
0 No protection against ingress of water
1 Protection against contact with any large
surface of the body such as the hand,
protection against ingress of foreign
objects >1.97'' (50 mm)
1 Protection against vertically falling water
drops
2 Protection against contact with the
fingers, protection against ingress of
foreign objects
>0.47'' (12 mm)
2 Protection against dripping water (at any
angle up to 15° from the vertical)
3 Protection against contact with tools,
thick wires or similar objects of >0.1'' (2.5
mm), protection against foreign objects
>0.1'' (2.5 mm)
3 Protection against water drips at any
angle up to 60° from the vertical
4 Protection against contact with tools,
thick wires or similar objects of >0.04'' (1
mm), protection against foreign objects
>0.04'' (1 mm)
4 Protection against water splashing from
any direction
5 Protection against contact, protection
against dust deposits inside 5 Protection against water jets (projected by a nozzle) at any angle
6 Complete protection against contact,
protection against ingress of dust 6 Protection against temporary flooding
7 Protection against ingress of water
during temporary immersion
8 Protection against pressurised water
during continuous immersion
LED Light Emitting Diode
Light diode
UVV Accident Prevention Regulations
Directives on health and safety at work issued by the professional association of the
Federal Republic of Germany

Chapter 1Introduction
Page 6 Definitions of Terms
Universal Crockery Dispenser
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1.4 Definitions of Terms
Term Definition
Authorised specialist An authorised specialist is a specialist that has been trained by themanufacturer, an
authorised service dealer or a company assigned by the manufacturer.
Cover A bell-shaped cover for keeping food warm on plates and dishes.
Cook&Chill-Kitchens "Cook and Chill": Kitchens where warm food after being cooked is chilled as quickly as
possible.
Cook&Serve-Kitchens "Cook and Serve": Kitchens where warm food is served immediately after being
cooked or kept warm until it is consumed.
Element formation Also: contact corrosion. Occurs when different noble metals are in close contact with
each other. This happens when a corrosive medium is between both metals, as for
example water or even air humidity.
Specialist A specialist is a person who can evaluate work assigned and can individually recog-
nise any possible dangers due to the professional training, specialist knowledge and
experience as well as knowledge of the respective guidelines.
Lift A movement, for example a vertical movement of the stacking platform from bottom to
top.
Control Compare with certain conditions and/or characteristics such as damages, leaks, filling
levels, heat.
Convection Physical properties or mass transfer (e.g. heat or cold) through currents in gases and
liquids.
Corrosion The chemical reaction of a metallic material with its surroundings, e.g. rust.
Machine safety The term of machine safety means all the measures used to avert injury to persons.
The basis for this are national as well as EC-wide valid directives and laws for protect-
ing users of technical devices and systems.
Passive layer A non-metallic protective layer on a metallic material that prevents or slows down
material corrosion.
Check Compare with certain values such as weight, torque, content, temperature.
Qualified person,
qualified staff Qualified personnel are persons who due to their professional training, experience and instruction as well as their knowledge of the respective standards, guidelines, accident
prevention regulations and operating conditions have been authorised by a person
responsible for system safety to carry out required activities and can recognise and
prevent any possible danger (definition of specialists according to IEC 364).
Schuko® The abbreviation of the German term "Protective contact" that indicates a system of
domestic plugs and sockets equipped with protective earthed contacts used in most of
Europe.
Instructed persons An instructed person is a person who has been instructed on the possible risks result-
ing from improper behaviour when carrying out the assigned task as well as on the
necessary protective equipment and protective measures and trained for this task if
necessary.

Introduction Chapter 1
Orientation Guide Page 7
Universal Crockery Dispenser
4330005_A0 UST/57-28 | UST/57-28K | USTH/57-28 | USTUH/57-28 | EUSTH/57-28
1.5 Orientation Guide
The front
"The front" means the side where the push bar is fitted. Members of the operating staff stay at this side to
move the universal crockery dispenser.
The side of the EUSTH/57-28 named as "the front" means the side, at which the staff operates the built-in
appliance.
The rear
The side named "the rear" means the opposite side of the front side (the front).
The right
The side named "the right" means the side at the right hand side of the front side (the front).
The left
The side named "the left" means the side at the left hand side of the front side (the front).

Chapter 1Introduction
Page 8 Notes on Use of Manual
Universal Crockery Dispenser
UST/57-28 | UST/57-28K | USTH/57-28 | USTUH/57-28 | EUSTH/57-28 4330005_A0
1.6 Notes on Use of Manual
1.6.1 Notes on the manual structure
This manual is structured in functional and task orientated chapters.
1.6.2 Notes and their illustrations used in the chapters
DANGER Brief description of danger
There is an imminent danger to life and limb of the user and / or third parties
when the instructions are not followed precisely or the circumstances de-
scribed are not taken into account.
The type of danger is indicated by a symbol and explained in the accompany-
ing text in more detail. In this example the general sign of danger is used.
WARNING Brief description of danger
There is an indirect danger to life and limb of the user and / or third parties
when the instructions are not followed precisely or the circumstances de-
scribed are not taken into account.
The type of danger is indicated by a symbol and explained in the accompany-
ing text in more detail. In this example the general sign of danger is used.
ATTENTION Brief description of danger
There is a potential risk of injury or damage to property when the instructions
are not followed precisely or the circumstances described are not taken into
account.
The type of danger is indicated by a general sign and explained in the accom-
panying text in more detail. In this example the general sign of danger is used.
NOTE Brief description of additional information
Attention is pointed to special conditions or additional important information on
the respective subject.
INFO Short title
Contains additional information on work assisting features or recommenda-
tions on the respective subject.

Safety Instructions Chapter 2
Introduction Page 9
Universal Crockery Dispenser
4330005_A0 UST/57-28 | UST/57-28K | USTH/57-28 | USTUH/57-28 | EUSTH/57-28
2 Safety Instructions
2.1 Introduction
The chapter on safety instructions describes the risks associated with the appliance in terms of product liabil-
ity (according to the EU Machinery Directive).
2.2 Warning Symbols Used
Symbols are used in these operating instructions to point out the dangers that can occur while operating or
cleaning the appliance. In both cases, the symbol provides information on the type and circumstances of
danger.
The following symbols can be used:
General hazardous area
Hazardous electrical voltage
Risk of hand injuries
Risk of crushing
Risk of hot surfaces
Wear hand protection
2.3 Safety Instructions for Appliance Safety
Safe operation of the appliance depends on appropriate and thorough use. Negligent handling of the appli-
ance can lead to danger to life and limb of the user and / or third parties as well as hazards to the appliance
itself and the other operator's property.
2.3.1 Safety instructions for all appliances
The following points are to be observed to ensure the appliance safety:
The appliance may only be operated when it is in perfect condition with regards to technical stan-
dards.
All the operating and actuating elements must be in a perfect and functionally reliable condition with
regards to technical standards.
Modifications or retrofits of the equipment are only permitted in consultation with the manufacturer
and on receipt of his written agreement.
In no case may people sit or stand on the appliance. Transport of persons is not permitted.
Before loading, the crockery dispensing height must be adjusted to the kind of crockery used.
To avoid injuries to the hands, care should always be taken to ensure that the crockery dispensing
height does not fall below the upper rim of the housing.
Never push the stacking platform down manually into the compartment (e.g. for cleaning). There is a
risk of injury, if the stacking compartment is released.
The appliance is provided exclusively for manual transport. Mechanical transport is not permitted.
Risk of injury and damage.

Chapter 2Safety Instructions
Page 10 Safety Instructions for Appliance Safety
Universal Crockery Dispenser
UST/57-28 | UST/57-28K | USTH/57-28 | USTUH/57-28 | EUSTH/57-28 4330005_A0
Release both total brakes before commencing transporting. Moving the appliance with the total
brakes locked can damage the chassis.
Transport should only be undertaken over level floors. Moving the appliance over very uneven floors
can damage the chassis.
Transport over inclined planes or steps is not permitted.
When approaching walls and moving round obstacles always pay attention to persons in the way.
Risk of injury.
When transporting the appliance, always hold both handles with your hands. Never let go of the ap-
pliance while moving it.
When transporting the appliance, do not move it faster than a walking pace. Heavily laden universal
crockery dispensers are difficult to brake and steer. If necessary, ask for assistance when transport-
ing the appliance.
If the universal crockery dispenser tips over due to outside influences or inattention, never catch it
manually. Risk of injury.
Do not stop the appliance on sloping floors.
After stopping, the appliance should be secured against rolling away by means of both total brakes
being applied.
In the case of off-site transport in a vehicle such as a lorry, the appliances should be secured prop-
erly. The total brakes are not sufficient as a transport securing method.
2.3.2 Additional safety instructions for heated appliances
Only insert the stacking platform with the basket opening facing downwards.
Heated universal crockery dispensers are intended for dispensing heated crockery. Their use for
cooking food and keeping it warm or for room heating is not permitted.
The crockery temperatures can exceed the permitted maximum temperatures of 149°F (65°C)for
touchable appliance surfaces. Always wear protective gloves when dispensing hot crockery. Risk of
burning.
The use of heated models in customer-service areas (for example, at self-service counters) is only
permitted by trained staff even when the temperature setting has been reduced. It is always neces-
sary to ensure that the crockery on the top which is about to be taken out is at a non-critical tempera-
ture of less than 131°F (55°C)and that the temperature setting on the appliance can't be altered.
Moreover, make sure that even if the crockery is to be taken out of the dispenser at the set tempera-
ture very quickly (e.g. at busy meal times) it can always be done safely.
During operation of the appliance, never reach into it and touch the heating element with the fingers.
Risk of burning.
Plastic crockery, top and bottom parts of plastic insulated sets and plastic-coated items for keeping
food warm should not be stored nor warmed up in heated universal crockery dispensers. Owing to the
high temperatures of the heating elements, the plastics can melt and catch fire.
If the cover made of stainless steel is used, its outer edges can heat up to over 149°F (65°C). There-
fore, only touch the cover with protective gloves to avoid skin irritations.
The base plate and used air from the base outlets can become very hot. The appliance should not be
operated on fibre-based floor coverings (e.g. carpets, mats).
The positions of the guide rails must be adjusted to the size of the crockery items before loading.
Before transporting, switch off the appliance, pull out the mains plug and insert it into the holder pro-
vided.
Forceful straining of the connecting cable can lead to damage to the internal line. Risk of fire.
Never pull the mains plug out of the socket by the connecting cable. The standard models of
HUPFER®appliances are equipped with a Schuko® angle plug. In contrast to a straight Schuko®
plug this plug only sticks insignificantly out of the socket and so cannot be damaged by being hit at
the side. If the appliance is moved without pulling out the mains plug beforehand, the socket can be
severely damaged or even pulled out from the wall as a result of leverage arising from overstretching
of the connecting cable.

Safety Instructions Chapter 2
Safety Instructions for Cleaning and Care Page 11
Universal Crockery Dispenser
4330005_A0 UST/57-28 | UST/57-28K | USTH/57-28 | USTUH/57-28 | EUSTH/57-28
Never move the appliance by pulling by the connecting cable.
If the mains plug has come into contact with water it must be dried before inserting it into the socket.
Danger to life.
Damaged mains plugs or connecting cables are to be replaced by authorised personnel before the
appliance is reused.
Do not use any extension cables in wet and damp areas.
Only insert mains plugs into suitable sockets. If the mains plug does not fit, the connecting cable of
the appliance is to be retrofitted by authorised specialist staff.
The use of socket adapters is not permitted. Risk of fire.
Do not clean the appliance with steam-jet or high-pressure washers. The appliance must be taken out
of operation and switched off at the mains beforehand in any area where steam-jet or high-pressure
washers are to be used.
2.4 Safety Instructions for Cleaning and Care
The following points shall be observed when carrying out any cleaning and maintenance operations:
For reasons of hygiene the cleaning instructions shall be strictly observed.
Take the appliance out of operation before starting the cleaning process. Pull out the mains plug and
insert it into the holder located on the appliance.
For cleaning, the appliance must be out of operation and cooled down sufficiently.
Do not clean the appliance with steam-jet or high-pressure washers. The appliance must be taken out
of operation and switched off at the mains beforehand in any area where steam-jet or high-pressure
washers are to be used.
Even appliances without an electrical connection should not be cleaned with running water or pres-
surised water.
2.5 Safety Instructions for Troubleshooting
The following points shall be observed when carrying out any maintenance and troubleshooting operations:
All troubleshooting work should only be carried out by authorised specialists.
When carrying out troubleshooting work, it must be ensured that the appliance is switched off. When
operating on the electrical installation, the appliance is to be switched off at the mains and secured
against reactivation.
The local applicable Accident Prevention Regulations must be observed.
Defective components should only be replaced with original parts.
2.6 Notes on Specific Hazards
Electrical energy
All work on the electrical installations should only be carried out by a certified electrician or by author-
ised specialists under supervision and monitoring of a certified electrician according to the certain
electro-technical regulations.
The appliances that inspection, maintenance and troubleshooting work is performed on must be
switched voltage free on and secured against reactivation, when the voltage is not required for this
kind of work. This must only be carried out by a certified electrician.

Chapter 3Technical Data and Description
Page 12 Appliance Description
Universal Crockery Dispenser
UST/57-28 | UST/57-28K | USTH/57-28 | USTUH/57-28 | EUSTH/57-28 4330005_A0
3 Technical Data and Description
3.1 Appliance Description
Universal crockery dispensers are intended for transport and storage of clean crockery ready for use. Since
these appliances can hold up crockery in a variety of ways and their internal compartment is panelled, they
are not only suitable for large plates and food platters but also for very small round and rectangular crockery
items.
Depending on the respective type of appliance, the crockery can be cooled down or heated up.
The compact design of the appliances and a bow-shaped handle fitted on them enable them particularly to
be installed in niches of food serving counters. Protruding push bars can neither obstruct nor injure the oper-
ating staff. Universal crockery dispensers can also be used together with food distribution belts and un-
heated models can also be used at self-service counters.
An adjustable, spring-loaded stacking platform holds up crockery. A continuously increasing weight of the
loaded crockery pushes down the stacking platform. When dispensing the crockery, the stacking platform
moves up so that the next crockery item is always at hand resting at the required dispensing height.
When using universal crockery dispensers, there can be inserted guide rails into the platform stacker that
ensure a safe positioning of various crockery items.
UST/57-28
The universal crockery dispenser UST/57-28 is unheated
and without a cooling device.
It has enclosed side and front walls and stores crockery
items ready for portioning cold dishes.
UST/57-28K
The universal crockery dispenser UST/57-28K is un-
heated, however, particularly suitable to be used in cold
stores. It is intended for storing cooled crockery ready for
portioning cold food components.
When used in the cold store, the cooling slots arranged on
the side and front walls of the appliance housing ensure a
rapid exchange of air and cause the cold air to be distrib-
uted uniformly inside.
The universal crockery dispenser UST/57-28K can also be
used as an unheated appliance.
USTH/57-28 and USTUH/57-28
The heated models USTH/57-28 (with stainless steel
tubular heating element) and USTUH/57-28 (fan-assisted
heating) are used mainly to stack, heat and store crockery
items ready for portioning warm components.
The models USTH/57-28 and USTUH/57-28 can also be
used as unheated appliances.

Technical Data and Description Chapter 3
Appliance Description Page 13
Universal Crockery Dispenser
4330005_A0 UST/57-28 | UST/57-28K | USTH/57-28 | USTUH/57-28 | EUSTH/57-28
3.1.1 Optional special accessories
The following parts can be applied as optional accessories for universal crockery dispensers.
Transparent cover made of polycarbonate for universal crockery dispenser 57-28 **
Guide rail made of stainless steel, Ø 0.8’’ (20 mm), rounded at the top and closed, with a ring fitting 
1’’ (25 mm)
Stainless steel cover for universal crockery dispenser 57-28. When using these covers, only short
guide rails can be applied.
Guide rail made of stainless steel, Ø 0.8’’ (20 mm), rounded at the top and closed, with a ring fitting 
1’’ (25 mm), short design for universal crockery dispenser 57-28 with stainless steel cover
Rail holder made of stainless steel mounted on the front side to hold additional guide rails or ones
which are not required.
Peripheral bumper strip made of impact-resistant plastic
Casters made of plastic, Ø= 5’’ (125 mm)with and without total brakes, plate attachment
Additional base and adjustable springs for increasing the load-bearing capacity of the stacking plat-
form
**Standard for USTH and USTUH
The part numbers of the special accessories can be found in the spare parts catalogue and order lists avail-
able online.
EUSTH/57-28
The universal crockery dispenser EUSTH/57-28 is in-
tended for installation into worktops.
The appliance has a stainless steel tubular heating ele-
ment and is used to stack, heat and store crockery items
ready for portioning hot food.
It is can also be used as an unheated appliance.

Chapter 3Technical Data and Description
Page 14 Appliance Data
Universal Crockery Dispenser
UST/57-28 | UST/57-28K | USTH/57-28 | USTUH/57-28 | EUSTH/57-28 4330005_A0
3.2 Appliance Data
Dim. UST/57-28 UST/57-28K
View of the appliance
Universal crockery dispenser, unheated
and without cooling device Universal crockery dispenser, unheated and with cooling device
Own weight lbs (kg) 121 (55) 121 (55)
Payload lbs (kg) 342 (155) 342 (155)
Permitted total weight lbs (kg) 463 (210) 463 (210)
Operating and ambient
conditions ˚F (˚C) -4 to 122 (-20 to +50) -4 to 122 (-20 to +50)
Chassis in (mm) 4 swivel casters, 2 with total brakes, Ø 5’’
(125) 4 swivel casters, 2 with total brakes, Ø 5’’ (125)
Compartment inner
panelling made of stainless steel, left and right sides provided with vertical plastic-
coated rods
made of stainless steel, left and right
sides provided with vertical plastic-
coated rods
Stacking platform in (mm) Stainless steel grids, plastic-coated
22.5x11’’ (570x280) Stainless steel grids, plastic-coated 22.5x11’’ (570x280)
Stack height without
cover in (mm) 22’’ (565) 22’’ (565)
Stack height with
cover in (mm) 26.5’’ (675) 26.5’’ (675)
Crockery size in (cm) between 3 and 11’’ (8 and 28) or edge
lengthbetween 3 and 11’’ (8 and 28) or edge
length
Number of crockery
stacks up to 21, depending on crockery size up to 21, depending on crockery size
Dim. USTH/57-28 USTUH/57-28 EUSTH/57-28
View of the appliance
Universal crockery dis-
penser with stainless
steel tubular heating
element
Universal crockery dis-
penser with fan-assisted
heating
Built-in universal crockery
dispenser with stainless
steel tubular heating
element
Own weight lbs (kg) 123.5 (56) 125.5 (57) 143 (65)
Payload lbs (kg) 340 (154) 337 (153) 320 (145)
Permitted total weight lbs (kg) 463 (210) 463 (210) 463 (210)
Operating and ambient
conditions ˚F (˚C) -4 to 122 (-20 to +50) -4 to 122 (-20 to +50) -4 to 122 (-20 to +50)
Chassis in (mm) 4 swivel casters, 2 with
total brakes, Ø 5’’ (125) 4 swivel casters, 2 with total brakes, Ø 5’’ (125) 4 swivel casters, 2 with total brakes, Ø 5’’ (125)
Compartment inner
panelling made of stainless steel, left and right sides pro-
vided with vertical plastic-
made of stainless steel,
left and right sides pro-
vided with vertical plastic-
made of stainless steel,
left and right sides pro-
vided with vertical plastic-

Technical Data and Description Chapter 3
Appliance Data Page 15
Universal Crockery Dispenser
4330005_A0 UST/57-28 | UST/57-28K | USTH/57-28 | USTUH/57-28 | EUSTH/57-28
Dim. USTH/57-28 USTUH/57-28 EUSTH/57-28
coated rods coated rods coated rods
Stacking platform in (mm) Stainless steel grids,
plastic-coated 22.5x11’’
(570x280)
Stainless steel grids,
plastic-coated 22.5x11’’
(570x280)
Stainless steel grids,
plastic-coated 22.5x11’’
(570x280)
Stack height without
cover in (mm) 22’’ (565) 22’’ (565) 22’’ (565)
Stack height with
cover in (mm) 26.5’’ (675) 26.5’’ (675) 26.5’’ (675)
Crockery size cm (in) between 3 and 11’’ (8 and
28) or edge lengthbetween 3 and 11’’ (8 and 28) or edge lengthbetween 3 and 11’’ (8 and 28) or edge length
Number of crockery
stacks up to 21, depending on crockery size up to 21, depending on crockery size up to 21, depending on crockery size
Electrical connection 230 V 1N AC 50 Hz 230 V 1N AC 50 Hz 230 V 1N AC 50 Hz
Power requirement kW 1.0 1.5 1.0
Length of the connect-
ing cable (spiral cable) ft (m) 5.9 (1.80) 5.9 (1.80) 5.9 (1.80)
Protection class IPX5 IPX5 IPX5
Heating Stainless steel tubular
heating element Fan-assisted heating Stainless steel tubular heating element
Heat insulation ceramic mat ceramic mat ceramic mat
Thermostat setting ˚F (˚C) 86 to 239 (30 to 115) 86 to 239 (30 to 115) 86 to 239 (30 to 115)
Maximum crockery
temperature ˚F (˚C) 185 (85) 212 (100) 185 (85)
Temperature regula-
tion continuous continuous continuous
The corresponding test marks can be found on our home page at www.hupfer.de.
Figure 1 View of the appliance USTH/57-28 and USTUH/57-28
1 Stainless steel guide rails 7 Connecting cable with mains plug*
2 Plastic cover 57-28* 8 Plug park (dummy socket)*
3 Stacking platform 9 Thermostat for setting the temperature*
4 Corner bumpers 10 On / Off switch*
5 Casters without total brakes 11 Push bar
6 Casters with total brakes
* USTH/57-28 and USTUH/57-28 only

Chapter 3Technical Data and Description
Page 16 Rating Plate
Universal Crockery Dispenser
UST/57-28 | UST/57-28K | USTH/57-28 | USTUH/57-28 | EUSTH/57-28 4330005_A0
3.3 Rating Plate
Figure 2 Rating plate
1 Disposal of old appliances 9 Nominal current
2 Test mark 10 Frequency
3 Protection class 11 Nominal voltage
4 Chilling capacity 12 Payload
5 Coolant 13 Own weight
6 Induction frequency 14 Serial number/Order number
7 Current serial number 15 Item and brief description
8 Power 16 Manufacturer
3.4 Intended Use
Universal crockery dispensers are used exclusively for transport and storage of clean crockery ready for use.
Depending on the model, the loaded crockery can be cooled or warmed when dispensing.
The appliances are intended for transporting round or square china items or crockery items made of tough-
ened glass. Transport of other loads is not permitted.
The intended use means the predetermined procedures, compliance with the indicated specifications and
use of the delivered or additionally available original accessories.
Any other use of the appliance is considered as unintended use.
3.5 Improper Use
The following is considered as improper use of the universal crockery dispenser:
It is not permitted to load the universal crockery dispenser with other loads as given.
In no case may people sit or stand on the appliance.
Transport of persons is not permitted.
Moreover, it is not permitted to use the universal crockery dispensers for cooking food or keeping it
warm and for room heating.
No liability is assumed and no warranty claims can be submitted for damages caused by improper
use.

Transport, Assembly, Putting into Operation and Decommissioning Chapter 4
Transport Page 17
Universal Crockery Dispenser
4330005_A0 UST/57-28 | UST/57-28K | USTH/57-28 | USTUH/57-28 | EUSTH/57-28
4 Transport, Assembly, Putting into Operation and Decommis-
sioning
4.1 Transport
ATTENTION Appliance damages caused by improper transport
In the case of off-site transport in a vehicle such as a lorry, the appliances
should be secured properly. The total brakes are not sufficient as a transport
securing method.
If the appliances are not secured properly, there is a risk of damage to prop-
erty and persons caused by squashing.
During transport, secure all the individually standing appliances using corre-
sponding transport securing devices.
4.2 Assembly (EUSTH/57-28 only)
DANGER Hazardous electrical voltage
The electrical voltage may be considerably dangerous to limb and life of per-
sons and lead to injuries.
All work on the electrical installations should only be carried out by a certified
electrician or by authorised specialists under supervision and monitoring of a
certified electrician according to the certain electro-technical regulations.
ATTENTION Risk of hot surfaces
The internal surfaces and base plates of the heated appliances can become
hot after the operation. The heated appliances should not come into contact
with light inflammable materials.
Fit thermally insulating plates onto the appliance. Ensure that there is enough
space between the housing and cladding required for air circulation.
NOTE Appliance location
The EUSTH/57-28 is a built-in appliance and may only be put into operation
after being retrofitted or built in (e.g. in a cabinet).
Figure 3 EUSTH/57-28 with dimensions given in inches (mm)

Chapter 4Transport, Assembly, Putting into Operation and Decommissioning
Page 18 Assembly (EUSTH/57-28 only)
Universal Crockery Dispenser
UST/57-28 | UST/57-28K | USTH/57-28 | USTUH/57-28 | EUSTH/57-28 4330005_A0
There is a connecting cable set with a wiring diagram attached to the built-in appliance. The set consists of
an on-site connecting cable with a Schuko® plug and a connecting cable with an appliance plug. The con-
necting cables are wired up with the on/off switch with an integrated indicator light.
4 threaded covers for the screw feet of EUSTH/57-28 are also attached.
Step 1 -Preparation
Prepare cut-outs in the worktop and the front cladding corresponding to the indicated dimensions.
The cut-out dimensions for a worktop and a switch are given in mm as shown in the drawing.
Remove the protective plastic film from the metal plates of EUSTH/57-28.
Step 2 -Assembly
NOTE Presetting the operating temperature
In contrast to the mobile appliances with the switch and controller arranged
next to each other, the switch of the built-in appliance can be placed any-
where on the front side.
Under these circumstances, the controller is no longer accessible for operat-
ing after the installation. Ensure that the desired temperature is set on the
thermostat before the installation.
Adjust the height-adjustable screw feet so that the appliance can be positioned under the worktop.
Position the appliance exactly under the cut-out in the counter and adjust the screw feet.
Fasten the stacking compartment in the worktop cut-out using 4 angled guides.
Figure 4 Assembly instructions EUSTH/57-28

Transport, Assembly, Putting into Operation and Decommissioning Chapter 4
Putting into Operation Page 19
Universal Crockery Dispenser
4330005_A0 UST/57-28 | UST/57-28K | USTH/57-28 | USTUH/57-28 | EUSTH/57-28
Step 3 - Connecting
Connect the appliance according to the wiring diagram.
Put 4 threaded covers on to the threaded rods of the screw feet in the interior of the EUSTH/57-28.
Put thermally insulating plates around the appliance.
The appliance is ready to be put into operation.
4.3 Putting into Operation
Before the first use of the appliance, remove the protective plastic film from the metal plates.
INFO Disposal of packing material
The packing consists of recyclable materials and can be disposed of appro-
priately. Thereby, the different materials are to be separated and disposed in
an environmentally compatible manner. In any case, the local bodies respon-
sible for disposal are to be involved for this purpose.
Before putting the appliance into operation, it is necessary to check whether the appliance functions prop-
erly.
The following functions are to be checked separately:
In all appliances (except EUSTH/57-28): Function of the total brakes.
In the heated appliances: Function of the operating elements and heating.
Before the appliance is put into operation it must be clean and dry.
4.4 Storage and Recycling
Temporary storage must take place in a dry and frost-free environment. The universal crockery dispenser
must be kept covered with a suitable covering material to be protected against dust ingress.
The universal crockery dispenser kept in the storage location must be checked for damages and corrosion
every 6 months.
NOTE Condensed water formation
Ensure that there is sufficient ventilation and no large temperature fluctuations
in the storage location to avoid condensed water formation.
Before the appliance is taken back into operation it must be clean and dry.
If the universal crockery dispenser is required to be recycled, all the heating devices (if available) must be
removed safely and completely, the recyclable materials must be separated properly and disposed in an en-
vironmentally compatible manner according to the Waste Disposal Regulations.
In any case, the local bodies responsible for disposal are to be involved for this purpose.

Chapter 5Operation
Page 20 Arrangement and Function of the Operating Elements
Universal Crockery Dispenser
UST/57-28 | UST/57-28K | USTH/57-28 | USTUH/57-28 | EUSTH/57-28 4330005_A0
5 Operation
5.1 Arrangement and Function of the Operating Elements
The operating elements are fitted on the front of the housing of the heated universal crockery dispenser.
Figure 5 Operating elements of USTH/57-28 and USTUH/57-28
The desired temperature can be set on the thermostat. A continuous adjustment is possible within the 4
power ranges. The On / Off switch of the appliance is arranged next to it. An indicator light integrated into the
switch shows, whether the appliance is ready to be operated.
5.2 Adjustment of Stacking Platform
WARNING Risk of hot surfaces
The internal surfaces of the heated appliances and the base plates can be-
come hot during operation and only cool down slowly in the air.
To adjust the stacking platform, allow the appliance to cool down sufficiently
with the cover removed.
The adjustments of the stacking platform should only be carried out on the appliances, which are switched
off, disconnected from the power supply and cooled down (room temperature).
Basically, the appliance must be adjusted if at least one of the following crockery parameters alters: diameter
or edge length, height, stack height and weight.
5.2.1 Spring adjustment
ATTENTION Damage to persons and property due to improper adjustment
When the dispensing height is exceeded, there is a risk of accident or injury
due to tipping of the crockery stack and breakage of dishes. If the level falls
below the dispensing height, injuries to the fingers due to squashing can oc-
cur when removing dishes.
Be careful when taking the stacking platform out and putting it back in. If it is
handled incorrectly, there is a risk of crushing your fingers.
Adjust appropriately the dispensing height by hooking or unhooking the
springs.
When adjusting springs on sharp edges, pay particular attention to the ends of
the tension springs. Act carefully.
Before loading the appliance, the dispensing height must be adjusted to the kind of crockery used. The dis-
pensing height is adjusted by hooking or unhooking tension springs.
The dispensing height must be adjusted so that over the entire lift the uppermost item of crockery is con-
stantly moved upwards to a uniform dispensing height between 0.6 and 1’’ (1,5 and 2,5 cm)above the upper
edge of the housing.