Liebherr GGU 1550 User Manual
Refrigerators and freezers
for professional use
Features and technology from A – Z
Subject to changes. Printed in Germany by XXXXXX. 7942 046-04/37.0/05.2012
www.liebherr.com
Professional quality
General Information
Catering & bakery
Drinks
General Information
Catering & bakeryDrinks
Impulse sales chest storage
appliances
appliances
Impulse sales chest storage
Laboratory
Laboratory
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10 good reasons to choose Liebherr
Experience counts
Liebherr is a specialist in refrigerator and freezer technology, and has been developing and
producing pioneering refrigeration solutions for more than 50 years. No other refrigeration
appliance manufacturer secures greater brand loyalty from its customers than Liebherr.
· Perfectly aligned refrigeration systems
· Electronic components and relays designed for maximum durability
· Ultra- reliable, perfectly balanced fans
Optimum product quality
To guarantee consistent product quality, Liebherr always uses first-class materials in the
manufacture of its appliances. The quality and functionality of every appliance is constantly
monitored, and superb workmanship, with attention to the smallest details, maintains the
well-renowned Liebherr quality.
Unequalled refrigeration performance
Refrigeration performance plays a central role in promoting produce freshness quality, and is
therefore particularly important in the commercial sector. By using the highest-quality compo-
nents we achieve outstanding refrigeration performance in our commercial sector appliances.
Environmentally friendly
Liebherr takes environmental responsibility seriously, and our ActiveGreen philosophy is
applied right through from the appliance development stage. Not only does Liebherr use the
highest-quality components to create appliances that are reliable, durable and offer optimum
energy efficiency, but also Liebherr exclusively uses environmentally friendly refrigerants
throughout its entire product range. In doing so, Liebherr is helping to protect the environ-
ment by the considered use of resources.
Award-winning energy efficiency
Energy efficiency has always been and remains a core priority at Liebherr, and is a major
consideration influencing everything we do from the appliance design stage onwards. In
this way we are able to develop even more efficient refrigeration components, leading to a
significant reduction our appliances’ energy consumption.
Robustness
Appliances used in the commercial sector have to endure intensive use; therefore Liebherr
appliances are extremely robustly designed.
· Solidly-designed door handles, hinges, locks, and feet
· Reinforced housing
· Doors and covers welded and strengthened for additional torsion-resistance and a long
service life on many models
· Coating on Liebherr’s housing is highly resistant to scratches, impact, and corrosion, and
is easy to clean
Hygiene
Hygiene is of considerable importance in the commercial sector and, at Liebherr, optimal
hygiene is a key focus.
· Easy-to-clean moulded inner liners with generously radiused corners
· Recessed seals for less condensation and greater dirt-resistance
· Casters or roller tracks available as accessories to make storage areas easier to clean
Maximum capacity and compact design
Because available floor space is often restricted, optimal use of available space is extremely
important. Innovative initial design ensures that the usable volume of Liebherr appliances is
maximised. When looking at available volume versus floor space required, Liebherr appliances
offer significant added value.
Reliability
When selecting quality materials and developing refrigeration components, Liebherr’s focus
is on appliances that function trouble-free and reliably over many years of use in the
commercial sector.
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Low costs over entire service life
Durability, low energy costs, high functionality, simple hygiene, optimum reliability, and low
service costs: whether from a purely economic perspective or with a view to achieving real
sustainability, the benefits reaped by choosing Liebherr appliances are winning over more
and more users.
ActiveGreen – Environmental
protection and sustainability
Award-winning energy efficiency
Liebherr takes environmental responsibility seriously, and so the
focus on ActiveGreen begins when designing refrigeration and freezer
appliances. Not only does Liebherr use extremely high-quality compo-
nents in its appliances to ensure that they function reliably and durably whilst offering
premium energy efficiency, but all plastics used are labelled for optimum recycling. All
manufacturing processes are tailored to use resources efficiently, e.g. heat naturally
generated during manufacture of appliances is recycled back as heating energy.
Liebherr was the first company to switch over its entire range of commercial refrigerators
and freezers to the environmentally friendly refrigerants R 290 and R 600a. These are
HFC-free and do not damage the ozone layer or contribute to the greenhouse effect.
All European Liebherr production sites are certified to the international environmental
management standard ISO 14001.
Energy consumption in 24 h
2,900
kWh
GKS 6570
199 7
Saving over 15 years: : 2.735 € (0.23 €/kWh)
By bringing together precision electronic control systems, optimised refrigeration
components, top-quality insulating materials, and highly efficient compressors continual
improvements towards energy efficiency are achieved.
– 75 %
0,728
kWh
GKPv 6590
2012
General Information
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Demand-responsive hot-gas defrosting
30 min 10 m in
Electric defrosting Hot gas defrosting
Elektroabtauung Heißgasabtauung
Demand-responsive hot-gas defrosting prevents unnecessary defrosting, which saves a
great deal of energy. This highly efficient defrosting method guarantees short defrosting
times of about 10 minutes. During defrosting hot-gas, released from the conventional
refrigeration cycle, is used to defrost the iced evaporator. This keeps the temperature
increase inside Liebherr appliances to a minimum during defrosting, increasing tem-
perature stability and consistency.
Interior temperature increase during hot-gas defrosting process:
■
Hot-gas defrosting: from 5 °C bis 6,5 °C = 1,5 K
■
Electric defrosting: from 5 °C bis 9,0 °C = 4,0 K
Catering & bakery
Catering &
Hot-gas condensate vaporiser
bakery
Condensate water from the refrigeration system is vaporised using excess and free
heat energy from the compressor. The intelligent design and layout of the Liebherr
In a professional environment, where freshness is of paramount
importance, refrigerators and freezers are subject to particularly high
demands. Liebherr has developed a special product range specifically
for use in kitchens and bakeries, combining refrigeration proficiency
and quality materials have been brought together. Liebherr professional
appliances are designed for maximum storage capacity and to
work efficiently even with frequent door openings and in the hottest
environments. Liebherr’s combination of excellent refrigeration
performance, superb workmanship down to the last detail, and
specialised features meets the most stringent professional requirements.
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vaporiser on the heavy-duty models is simple, corrosion-free and ultra-reliable and is
also highly energy-efficient.
Large evaporator
surface area
Highly efficient
fans
NoFrost technology
Both the rear-wall and finned evaporator
types have been designed with the larg-
est possible dimensions. This means that
there is a large surface area available for
heat exchange, which leads to greater
refrigeration performance and therefore
more rapid cooling of the interior.
Highly efficient fans ensure that freshly
stored produce is cooled quickly, and that
the refrigeration temperature throughout
the entire interior remains uniform.
Highly efficient refrigeration system
With decades of experience in refrigeration systems and continuous research and
development Liebherr guarantees the outstanding quality of its refrigeration appliances.
Liebherr uses top-performance compressors, condensers, evaporators and other
refrigeration components to vastly reduce both energy consumption and operating
costs. The Liebherr top-mounted refrigeration system is cleverly designed to make
the maximum use of the space available. As a result the entire refrigeration system
is outside of the storage space thus increasing the internal volume. This layout also
means these Liebherr cabinets can easily be placed on plinths thus adapting to various
kitchen designs.
Defrosting is history: Liebherr NoFrost appliances provide professional quality refrig-
eration that gives reliable long-term freshness. Chilled circulating air freezes the food
and any humidity is expelled. As a result, the freezer is always free from ice and the
food never frosts over.
Optimum air distribution system
An air duct on the back interior wall
facilitates optimum circulation of cold air.
The twin fans positioned by the evapora-
tor draw air across the evaporator posi-
tioned at the top of the appliance. Here,
the air cools down and is fed downwards
air duct
behind an air duct on the rear wall. This
results in the cold air constantly circulat-
ing and thus provides optimum tempera-
ture distribution within the interior.
Catering & bakery
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Digital temperature display
The digital temperature display indicates
the interior temperature of the refrigera-
tion appliance to the exact degree and
can be easily read from the outside,
giving a quick overview without having to
open the appliance.
Infrared interface
Using the infrared key, temperature data
can be read directly from the interface at
the front of the ProfiPremiumLine elec-
tronics system and transferred to a PC or
laptop for documentation purposes. The
infrared key and associated software are
available as accessories.
Serial bus interface
Connection
Appliance 1 Appliance 2 Appliance 20
The serial bus interface can be used to connect appliances to an external monitoring
system. If no interface-connectable monitoring system is available, an interface converter
retrofit kit is available as an accessory, which can be connected to a PC or laptop. The
bus interface can be used to switch and network up to 20 appliances in series.
Temperature alarm Door open alarm
Catering & bakery
Volt-free contact
The integrated temperature alarm signals
A volt-free contact can be used to integrate refrigerators or freezers into an existing
warning system, to notify security personnel or a caretaker of malfunction outside
normal working hours. Warning systems can be equipped with acoustic or visual alarms.
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if the lower or upper thresholds have been
breached. This alarm is equipped with
acoustic and visual signals to provide
maximum security for the goods stored.
The appliances detect if a door has been
left open or not shut properly and draw
attention to this by means of an integrated
acoustic and visual door open alarm. This
alarm has a one-minute delay, which can
be adjusted if necessary.
304-grade stainless steel outer housing
High-performance insulation
The outer housing is constructed with
single-sheet side walls, without any gaps,
making it extremely hygienic and easy to
clean. 304-grade stainless steel is tough
and highly corrosion-resistant and ideal
for the requirements in the commercial
sector.
Stainless steel wire shelves
The robust 304-grades stainless steel
wire shelves from Liebherr fulfil the high-
est hygiene requirements and are re-
sistant to acids and other chemicals. They
can bear loads of up to 60 kg and thus
easily withstand intensive levels of strain.
High-performance insulation ensures low energy consumption and maximum
temperature stability and consistency inside the appliance. Polyurethane rigid foam
insulation is highly durable, environmentally friendly, and demonstrates outstanding
insulation properties. This insulation, combined with advanced refrigeration technology,
is the reason for the low energy consumption of Liebherr appliances.
Hinged, detachable unit
compartment cover
Catering & bakery
Separately controlled ceiling lighting
The GKPv 6572 model with glass door
comes equipped with a separately con-
trolled ceiling light. The glass door with
internal light provides a quick overview
of the cabinet contents from outside. This
can help to reduce door opening times
and thus energy consumption and also
speed up product handling.
14 15
The refrigeration components are integrated into the unit compartment where they can
be easily accessed for cleaning or servicing purposes. The unit compartment cover can
be easily opened on hinges or completely dismounted, which guarantees excellent
accessibility, e.g. it is easy to clean the filter on the condenser, which is positioned
behind the unit cover without having to move the appliance.
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