Liebherr WTes 5872 Vinidor - Manual (Page 5)

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8,0 °C
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Laboratory refrigerators and freezers with Profi electronic controller
Energy-effi cient hot-gas defrost system
The hot-gas defrost system with demand and time control permits very short defrost cycles: only
8 minutes for laboratory refrigerators and 12 minutes for laboratory freezers. As a result, the internal
temperature remains almost constant during the defrost cycle. In addition, there is the option of initiating
the defrost manually.
External temperature and alarm documentation
The laboratory appliances with Profi electronic controllers are equipped with a volt-free contact for
alarm forwarding to an external remote warning system. The data stored in the internal memory can be
read out via the infrared interface and transferred to a PC with documentation software. In addition, the
appliances have an RS 485 serial interface enabling as many as 20 appliances to be networked with a
central documentation and alarm system.
High-quality interior for versatile use
The smooth compartment liners are made entirely of 304-grade stainless steel and are therefore
particularly easy to clean. The robust trayslides can be easily repositioned to suit needs and, together
with the plastic-coated grid shelves, they ensure versatile use of the interior. The trayslides are U-shaped
to make the grid shelves non-tilting.
Maximum temperature stability and temperature consistency
Maximum temperature stability is ensured by the high-performance forced-air cooling system with
double ventilation, in conjunction with optimal routing of the air fl ow. The very short defrost cycles
allow the internal temperature to be kept almost constant during the defrost phase. All the laboratory
appliances are tested according to the NF X 15-140 standard with regard to maximum temperature
stability and optimal temperature consistency.
Access port for an external temperature sensor
In the laboratory appliances with Profi electronic controllers there is provision for an independent
temperature sensor allowing, for instance, a PT 100 probe or similar measuring elements to be
positioned in the interior. The diameter of the access port is 7.6 mm.
Refrigeration components
The refrigeration components are securely integrated in the ceiling area, allowing ready access. The
compressor compartment panel can be simply raised for cleaning or servicing purposes and can be fully
detached from an opening angle of 45° to provide very good access to the refrigeration components.
Electric defrosting Hot gas defrosting
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Castors
The LKPv and LGPv ranges come with castors as standard to allow easy and convenient cleaning
underneath and versatile use of the appliances in different rooms. The brake of the two front castors
provides a fi rm hold and ensures that the appliances cannot tip even if the grid shelves are extended.
The castors can be removed in order to transport the cabinets. Doing so the height of the cabinets will
be reduced by 13 cm.
Practical door
The doors remain open at 90° and are self-closing at less than 60° for convenient use. The integrated
lock is exceedingly sturdy and protects the stored products against unauthorised access. The door
hinges are interchangeable and the door seals are replaceable.
Infrared key with
documentation software
The alarm events and temperature
profi le data can be read out using the
infrared key available as an accessory.
Corresponding documentation software
is included enabling visualisation of the
read-out data on a PC.
Interface converter with
documentation software
A special interface converter including
documentation software is available
for central documentation of the
temperature profi le data and alarm
events of multiple appliances via the
RS 485 serial interface. Capability
is provided for interconnecting as
many as 20 laboratory appliances
and centrally documenting their
parameters.
NTC product temperature
probe
An NTC product temperature probe
for logging product temperatures
is available as a retrofi t kit for the
laboratory appliances with Profi
electronic controllers. The logged
product temperatures can either
be read by the electronic controller
or transferred to an external
documentation system via the existing
RS 485 interface.
Functional and practical accessories
U-shaped trayslides and
grid shelves
Additional U-shaped trayslides and
plastic-coated grid shelves can be
retrofi tted as required to provide extra
storage options. The robust grid
shelves have an extremely high
loading capacity of up to 60 kg.
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