Hupfer SPA/K User manual

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SPA/K
GN container food serving trolleys
Operating instructions

All texts, illustrations and graphic designs are protected by
copyright. Reproduction, distribution and issuing are permitted
for internal company purposes only. © Hupfer Metallwerke
GmbH & Co. KG, Coesfeld 2022
Hupfer Metallwerke GmbH & Co. KG
Dieselstraße 20
48653 Coesfeld
Telephone: + 49 (0) 2541 805-0
Email: [e-mail]
Internet: www.hupfer.com
Manufacturer information
Index: 1, en_GB
Document information
Last update: 19.09.2022

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Table of contents
1 General information............................................................... 5
1.1 Product information......................................................... 5
1.2 Target group.................................................................... 5
1.3 Symbols.......................................................................... 5
1.4 Signs............................................................................... 6
2 Product description............................................................... 6
2.1 Function.......................................................................... 6
2.2 Overview......................................................................... 7
2.3 Equipment features......................................................... 7
2.4 Variants........................................................................... 7
2.5 Technical data................................................................. 8
2.6 Rating plate..................................................................... 9
3 Safety information................................................................. 9
3.1 Intended use................................................................... 9
3.2 Improper use................................................................... 10
3.3 Safety instructions........................................................... 10
3.3.1 General information............................................... 10
3.3.2 Transport................................................................ 10
3.3.3 Operation and use................................................. 11
3.3.4 Cleaning................................................................. 11
3.3.5 Maintenance.......................................................... 11
3.3.6 Safety devices....................................................... 11
4 Transport................................................................................ 12
4.1 Delivery........................................................................... 12
4.2 In-house transport........................................................... 12
4.3 Lifting.............................................................................. 12
5 Operating conditions............................................................. 13
6 Commissioning...................................................................... 13
7 Operation................................................................................ 14
7.1 Supply the transport trolley with power........................... 15
7.2 Operating the transport cart............................................ 15
7.3 Moving the cart............................................................... 16
7.4 Loading goods................................................................ 18

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7.5 Keeping food cold........................................................... 18
7.6 Removing the goods....................................................... 20
7.7 Finishing operation.......................................................... 20
8 Care and cleaning.................................................................. 20
8.1 Cleaning intervals........................................................... 21
8.2 Permissible cleaning types............................................. 21
8.3 Permissible cleaning agents........................................... 23
8.4 Material compatibility...................................................... 24
8.5 Manual cleaning.............................................................. 25
8.6 Disinfecting..................................................................... 25
9 Maintenance and repair......................................................... 26
9.1 Maintenance intervals..................................................... 27
9.2 Maintenance activities..................................................... 27
9.3 Error messages............................................................... 28
9.4 Troubleshooting.............................................................. 28
9.5 Repairs and spare parts.................................................. 29
9.6 Recommissioning............................................................ 29
10 Disposal.................................................................................. 30

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■Servicing or repairing the electrical installation within the product
■Rectifying electrical faults
■Maintenance work on mechanical systems or trained activities on
the electrical, cooling or heating systems
■Simple repairs
■Appropriately trained employees of the customer or an employee of
the manufacturer
■Standard operating steps
■Rectifying faults as described in the “Troubleshooting” section
■Cleaning
The operator or an authorised person must carry out the work.
■Check the condition of the entire unit
■Determine maintenance requirements
■Assembling, dismantling, servicing or disposing of a system within
the product
■Rectifying faults
1 General information
1.1 Product information
Product name GN container food serving trolleys
Product type SPA/K – with active cooling
1.2 Target group
These operating instructions are intended for the following groups of
people who perform the listed activities with or on the product:
Electrician
Maintenance engineer
Operating staff
Operator
Refrigeration specialist
1.3 Symbols
DANGER
“Danger” indicates a hazardous situation that will result directly in
death or serious injury.

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WARNING
“Warning” indicates a hazardous situation that may result in serious
injury.
CAUTION
“Caution” indicates a potentially hazardous situation that may result in
minor to moderate injury.
NOTICE
“Notice” indicates a situation that may result in damage to property.
“Notes” give tips on the correct use of the product.
1.4 Signs
General warning sign
This warning symbol is attached at points on the product that present a
risk of accident and injury.
Warning of electric current
This warning symbol is attached at points on the product where the
electrical circuits are installed.
Warning of flammable substances
This warning symbol is attached to points where hazards are caused
by flammable substances.
Do not use pressure washers and steam cleaners
This warning symbol means that no steam cleaners or pressure
washers may be used on or around the product.
2Product description
2.1 Function
The GN container food serving trolley is used to present food in Gas-
tronorm containers (GN containers) and keep it cold during food distri-
bution.

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2.2 Overview
Fig. 1: Overview of SPA/K
1 Handle
2 Rating plate
3 Control
4 Housing with ventilation grilles
5 Swivel castor with locks
6 Swivel castor
7 Disk bumper
8 Plug
9 Drain valve
10 Cold well
2.3 Equipment features
Housing Sturdy, self-supporting design in stainless
steel.
Chassis Made of stainless steel, solid, torsionally
rigid.
Wheel The castor design complies with the DIN
18867-8 standard.
Swivel castor With locks. When the locks are engaged
the castors cannot swivel and turn.
Handle For safely moving the transport trolley.
Impact protection on every corner. Protects against damage
in the event of collision. The following com-
ponents protect the transport trolley from
impact:
Disk bumpers
Handles with integrated impact protection
Cold well For keeping food cold in GN containers.
Control for setting the temperature of the
well. Drain valve for draining condensate
from the well.
2.4 Variants
Several versions of the GN container food serving trolley are available.
The versions differ as follows:

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■Size of the cold well
2.5 Technical data
Model SPA/K 2 GN DW SPA/K 3GN DW
Dimensions, total
weight
Width1mm 970 1317
Depth1mm 695 695
Height1mm 899 899
Total weight1kg 54 54
Payload, total kg 84 84
Well
Effective dimensions -- Gastronorm (GN) 530 × 325 mm Gastronorm (GN) 530 × 325 mm
Quantity -- max. 2 × 1/1 GN max. 3 × 1/1 GN
Cooling
Refrigeration system -- Compressor Compressor
Refrigerant -- R290 R290
Refrigerant quantity g 76 86
Refrigeration capacity W 340 340
Climate classification -- N (Normal): +16 to +32 N (Normal): +16 to +32
Control range, target
temperature
°C 0 to +12 0 to +12
Electrical connection
Voltage V 230 230
Wattage W 365 365
Rated current A 1.6 1.6
Mains frequency Hz 50/60 50/60
Protection class IP X3 X3
Emissions
Sound pressure level dB(A) the A-weighted sound pressure level is less than 70 dB(A)

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2.6 Rating plate
Fig. 2: Rating plate
1 Manufacturer and address
2 Type designation and product code
3 Order number
4 Total weight
5 Payload, total
6 Electrical connection
7 Model year
8 Product code as barcode
9 Electrical serial number
10 Induction frequency
11 Refrigerant
12 Refrigeration capacity
13 Protection code
14 Certification mark/CE label if available
15 Disposal of old appliances
3 Safety information
3.1 Intended use
The GN container food serving trolley is used to present food in Gas-
tronorm containers (GN containers) and keep it cold during food distri-
bution.
The cold well holds GN containers with food. Cold wells keep pre-
cooled food cold.
Intended use includes following the prescribed procedures, complying
with the given specifications, and using the genuine accessories that
are provided or additionally available. Any other use of the transport
trolley is considered inappropriate.

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3.2 Improper use
The GN container food serving trolley is not to be used as a self-
service trolley.
The GN container food serving trolley is not suitable for machine
cleaning.
It may not be used for transporting living creatures. Persons must not
sit or stand on or in the transport trolley.
In the case of improper use, the manufacturer and suppliers shall
assume no liability for resulting damage. Damage caused by improper
use shall result in loss of liability and of guarantee claims.
3.3 Safety instructions
3.3.1 General information
The transport trolley may only be used in a technically sound condition,
taking risks and safety into consideration, for its intended purpose and
in accordance with the operating instructions.
All operating elements and controls must be in a technically sound
condition and functioning reliably.
Before each use, the transport trolley must be checked for any visibly
apparent damage and defects. If damage occurs, immediately notify
those responsible and take the transport trolley out of use.
Changes or conversions are only permitted after consultation and
written consent from the manufacturer.
Transport trolleys can move off independently and in an uncontrolled
manner if the castors are not locked.
3.3.2 Transport
If the transport trolley needs to be lifted, only use lifting gear and
load-bearing equipment approved for the total weight of the transport
trolley.
Only use transport vehicles that are approved for the total weight of the
transport trolley.
The transport trolley does not have any attachment points for eyelets
or similar lifting aids.
If the transport trolley is transported, it must be additionally secured
during transport. The locks on the castors are not sufficient as trans-
port securing devices. They must not be braked during transport on an
HGV because the locking mechanism will be damaged by the forces
that occur.

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3.3.3 Operation and use
Transport trolleys can move off independently and in an uncontrolled
manner if the castors are not locked. Secure the stationary transport
trolley against rolling away.
Do not park on sloping ground.
Only move transport trolleys with the locks released. Moving with the
locks engaged will damage the chassis. The locks are not brakes. Only
engage the locks when the transport trolley is stationary.
Only release the direction lock briefly when the transport trolley is at a
standstill and on level ground, e.g. to move it sideways.
Maintain an overview of the route and move the transport trolley with
foresight, e.g. by pulling the transport trolley. Watch out for children,
other persons and obstacles. Do not move the transport trolley over
steps. Two people should move the transport trolley on slopes.
Never try to catch a transport trolley that is falling over. Transport
trolleys are heavy and can cause serious injury. Move the transport
trolley with foresight.
3.3.4 Cleaning
During cleaning and maintenance work, the transport trolley must not
be in operation and must be de-energised. Pull out the mains plug.
If the electrical system comes into contact with water or condensate,
there is a risk of short circuits and damage to the transport trolley.
The transport trolley must not be cleaned with pressure washers or
spraying lances.
3.3.5 Maintenance
Troubleshooting may only be carried out by maintenance technicians.
Work on electrical equipment may only be carried out by electricians.
The work must be carried out in compliance with the rules of electrical
engineering.
Work on the refrigeration system may only be carried out by refrigera-
tion specialists. The work must be carried out in compliance with the
rules of refrigeration engineering.
3.3.6 Safety devices
Locks on the wheels. The locks must be activated when the trolley is
stationary to prevent the transport trolley from rolling away.

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4 Transport
WARNING
Risk of crushing
Improper use or incorrect means of transport may cause the transport
trolley to tip over, slip or fall. If not adequately secured, there is a
danger of serious crushing injury and damage to the transport trolley.
−Secure each transport trolley with appropriate transport securing
devices during transport.
NOTICE
Damage to the locks
The forces that occur during transport by lorry cause damage to
engaged locks.
−Secure the transport cart with a transport securing device.
−Release the locks during transport by lorry.
4.1 Delivery
Delivery is performed by a transport company, whose specialists are
responsible for securing the load during transport. At the place of
delivery, the transport cart can then be moved on its own wheels.
4.2 In-house transport
Delivery is made by a transport company, whose specialists are
responsible for securing the load during transport. At the place of
delivery, the transport trolley can then be moved on its own castors.
4.3 Lifting
The transport cart does not have any attachment points for eyelets or
similar lifting aids.
Always transport the transport cart upright if possible. It can be lifted
using a lifting platform, for example.

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5 Operating conditions
For installation and operation, the BG rule “Arbeiten
in Küchenbetrieben” (Working in kitchens) of the BGZ
technical committee “Nahrungs- und Genussmittel”
(BGR 111) BGR 500:2008-04 Chapter 2-35 must be
observed, among others.
Observe clearances
The transport trolley requires unobstructed air
exchange for cooling and for electronics to function
properly.
−Observe the minimum distance to the ventilation
grilles: Fan-assisted cooling 300 mm.
−Do not cover or move any ventilation grilles.
1. Only move the transport trolley over flat, dry and stable surfaces.
2. The transport trolley should only be positioned on a level floor.
3. Secure the transport trolley with the locks when stationary.
4. Ensure that the ventilation grilles are not obstructed.
5. Position the transport trolley at a sufficient distance from heat
sources and steam-forming devices, e.g. ovens and bain-marie
wells.
6 Commissioning
CAUTION
Injuries caused by rolling away
The transport trolley is heavy, and if it rolls away out of control, there
is a risk that people may be injured by being hit or crushed.
−Engage the locks when the transport trolley is stationary.
−The transport trolley should only be positioned on horizontal sur-
faces.

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NOTICE
Instructing operating staff
Before commissioning, operating staff must be instructed how to
operate the transport cart correctly.
NOTICE
Compressor damage
After delivery, the compressor oil must be allowed to settle or com-
pressor damage will occur.
−Allow the transport trolley to stand upright and undisturbed for at
least 8 hours.
−Do not connect the transport trolley to the mains immediately.
Help protect our environment. Separate the pack-
aging materials and recycle them. Dispose of:
−Packaging and foils in the (yellow) recycling bin.
−Cardboard boxes and paper in the paper recy-
cling bin.
Clean the transport trolley thoroughly before first use (see cleaning
instructions).
Check the functions of the transport trolley:
■Functionality of all mechanical parts
■Functionality of all electrical parts
■Functionality of the controls
■Functionality of the locks
Free access to the mains plug of the transport trolley is required for
operation. In an emergency, the mains plug can be pulled out of the
socket to de-energise the transport trolley.
7Operation
WARNING
Flammable refrigerant
A flammable gas is used as a refrigerant. Closed vents will result in a
flammable air-gas mixture in the event of leakage.
−Do not close the vents in the floor of the cart.

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CAUTION
Injuries caused by rolling away
The transport trolley is heavy, and if it rolls away out of control, there
is a risk that people may be injured by being hit or crushed.
−Engage the locks when the transport trolley is stationary.
−The transport trolley should only be positioned on horizontal sur-
faces.
7.1 Supply the transport trolley with power
1. Position the transport trolley in the desired location.
2. Activate both locks.
🡆The transport trolley is secured against rolling away.
3. Connect the transport trolley to the power supply.
7.2 Operating the transport cart
The cooling is operated via the control panel.
Fig. 3: Controls and display on the GN container food serving trolley
1[Increase temperature] button
2[Reduce temperature] button
3[On/Off] button
4[Current temperature] display
Switch on the controls
As soon as the transport trolley is connected to the power supply, the
controls are switched on.
Connect the transport trolley to the power supply.
🡆The display shows [OFF] when the cooling is switched off.
🡆The display shows the [current temperature] when the cooling
is switched on.
The controls will remember if cooling was
switched on or off when the transport trolley
is disconnected from the power supply.

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Switching cooling on/off
Press the on/off button for at least 3 seconds.
🡆The display shows [OFF] when the cooling is switched off. The
ventilation switches off.
🡆The display shows the [current temperature] when the cooling
is switched on.
The ventilation audibly switches on.
Displaying the required temperature
Press the on/off button for no more than 3 seconds.
🡆The [required temperature] is shown in the display.
Setting the required temperature
If you press and hold the on/off button for at least 3 seconds and
do not press either the up or down button , the controls will be
switched off.
If you hold down the on/off button and immediately press the up or
down button , the required temperature will be set.
1. Press and hold the on/off button .
2. Press the up or down button or to increase or decrease the
required temperature.
🡆The display shows the [required temperature].
3. Release the buttons.
🡆The required temperature has been set.
7.3 Moving the cart
WARNING
Risk of crushing
Improper use or incorrect means of transport may cause the transport
trolley to tip over, slip or fall. If not adequately secured, there is a
danger of serious crushing injury and damage to the transport trolley.
−Secure each transport trolley with appropriate transport securing
devices during transport.

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Engaging the locks
Swivel castors with locks can block the wheel from turning and swivel-
ling. When the locks on both swivel castors are engaged, the transport
cart is secured against rolling away.
Engage the lock as shown on the left.
🡆The turning and swivel movement of the wheel is blocked.
Releasing the lock
Release the lock as shown on the left.
🡆The wheel can turn and swivel.
Moving with the push handle
WARNING
Contusion hazard
Transport carts rolling in an uncontrolled way may crush persons.
−Never leave the transport cart to roll unattended.
−Only drive uphill or downhill if you can control the transport cart. If
necessary, involve a second person.
−Only park the transport cart on level surfaces.
−Each time you park the transport cart, secure it with both locks
against rolling away.
−Fix the wheels in the “straight ahead” position.
CAUTION
Risk of injury from the power cable
If the transport trolley is connected to the power supply or the wall
station when moving, there is a risk of injury.
−Disconnect the connection to the power supply or the wall sta-
tion.

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1. Disconnect the connection to the power supply.
2. Hang the plug in the holder provided.
3. Release the locks.
4. Move the transport trolley using the push handle.
5. Make sure that path ahead is clear.
6. Only move the transport trolley over flat, dry and stable surfaces.
7. Have someone help you if the transport trolley needs to be
moved on a slope.
8. Engage the locks when the transport trolley is stationary.
7.4 Loading goods
Cold well
1. If you have covered the cold well to allow for efficient pre-cooling,
remove the lid.
Using the support bars
If you are using GN containers with smaller dimen-
sions, put in suitable support bars. The support bars
ensure that the GN containers lie securely in the well.
−Use support bars for smaller GN containers.
2. Put the GN container in the GN container in the cold well.
3. Cover the GN containers with suitable lids.
🡆The food can be kept cold until it is served.
7.5 Keeping food cold
The GN container food serving trolley is intended for keeping pre-
cooled food cold. The transport trolley must not be loaded with warm,
non-precooled food.
Cover the food if it is not necessary to access it.
Food can only be kept cold when the transport trolley is connected
to the power supply. Only disconnect the transport trolley from the
power supply during operation when the food is covered and only for
a short time. After an interruption in operation, check whether the food
temperatures are still within the permissible range.
Cold well
Precooling time
The required duration of precooling depends on sev-
eral factors (size of the transport trolley, ambient
temperature, etc.). The values specified for the pre-
cooling time are reference values.

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The GN container food serving trolley can only effectively keep food
cold if it is precooled for 0.5 hours.
The GN container food serving trolley can be switched on manually for
pre-cooling.
1. Close the drain valve.
2. Cover the well with a suitable lid.
3. Connect the GN container food serving trolley to the power
supply.
4. Switch the GN container food serving trolley on by pressing the
on/off button (min. 3 seconds).
5. Check on the display whether the cooling is switched on.
🡆The display shows the [current temperature]. If necessary,
switch on the cooling.
6. Check the [required temperature] on the display, press the on/off
button (max. 3 seconds).
If necessary, correct the [required temperature].
🡆The GN container food serving trolley starts cooling.
The GN container food serving trolley can be switched on automati-
cally for pre-cooling via a timer.
1. Connect the GN container food serving trolley to the power
supply via the timer.
2. Close the drain valve.
3. Cover the well with a suitable lid.
4. Switch the GN container food serving trolley on by pressing the
on/off button (min. 3 seconds).
5. Check on the display whether the cooling is switched on.
🡆The display shows the [current temperature]. If necessary,
switch on the cooling.
6. Check the [required temperature] on the display, press the on/off
button (max. 3 seconds). If necessary, correct the [required
temperature].
7. Switch off the power supply at the timer.
🡆The GN container food serving trolley starts cooling when the
timer connects the GN container food serving trolley to the
power supply.

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7.6 Removing the goods
Cold well
Remove the lids from the GN containers.
🡆You can remove food or the entire GN containers.
Practical tip
It is easier to carry cold GN containers on
drop handles.
−Use GN containers with drop handles.
7.7 Finishing operation
Disconnecting the power supply
1. Disconnect the connection to the power supply.
2. Hang the plug in the holder provided.
🡆You can move the transport trolley.
Emptying the cold well
During operation, condensate and dirt may accumulate in the well.
1. Place a suitable recipient under the drain.
2. Open the drain valve.
3. Drain all the water from the well.
4. Remove all GN containers and any support bars from the well.
5. Clean the well if necessary.
8Care and cleaning
DANGER
Electrical hazard
Electricity is a serious hazard and can cause injury or even death.
−Before starting any cleaning and maintenance work, disconnect
the transport cart from the mains.
−Disconnect the mains plug and put away the cable in its desig-
nated place until the next use.
−Do not clean the transport cart with steam cleaners or high-pres-
sure cleaners.