oscartielle LIBRA ST Betriebsanleitung Seite 18

ENGLISH
1 – Description of the Unit
The plug-in islands LIBRA ST consist of individual units that cannot be multiplexed, but only juxtaposed. All the above
mentioned islands adopt a static refrigeration system with condenser pipes surrounding the basin and are equipped with
sliding covers in low-emissivity glasses. The general characteristics concerning appearance and overall dimensions are
shown on FIG.1.
2 – Handling the unit
The units are fitted with plastic feet. These have to be removed before the installation of the cabinet. (wooden crate
available on request). The feet enable the handling through fork-lift trucks. The units must be handled by authorized
technicians only.
The weights for the different lengths of units and the fork lifting points are shown on FIG. 2.
3 – Receipt and storage
Warning: in order to prevent any damage to the refrigerated unit, LIBRA ST cabinets must be handled always on the
proper side (not on its side or upside down) both during transport and storage. Failure to observe such requirement will
invalidate the warranty.
When the unit is delivered, the status of the packing has to be inspected. If the packing has been damaged, check the
contents in the presence of the forwarding agent.
The unit must be protected against atmospheric agents and the storage temperature must be in the range –25°C to
+55°C, while the humidity of the air must be in the range 30% and 95%.
The unit must be unpacked with care because the packing contains some parts and/or accessories required to complete
the island (price-holders, dividers, etc.).
Remove the polystyrene and the feet used for the handling of the cabinet. (Fig.4)
Position the island exactly where it has to be installed. Never pull it by the handrails!
Warning: If the goods are damaged on arrival, please notify the company immediately, any delays in informing the
company will relieve the manufacturer of all responsibility.
Any damage caused to the unit during transportation or storage cannot call for the manufacturer responsibility.
4 – Installation and environmental conditions
The island must be placed on a perfectly flat floor; when the unit is full, it must not sway (FIG. 5).
It is strictly forbidden to place the unit in areas where explosive gaseous substances are present.
The unit is not designed for use in the open air and it must be protected against rain (FIG. 3).
The performance of the cabinet refers (according to the international standard EN ISO 23953-1/2) to environmental
climatic class 3 which consists of a room temperature of 25°C with relative humidity of 60%.
A suitable space is required at the front to ensure the correct air circulation in the condenser (FIG. 9). Any objects
obstructing the condenser grid will prevent the unit from correct functioning (FIG. 6). If the environmental conditions differ
from those provided for, or radiating heat, the level of performance will be lower than the standard one.
5 – Electrical connection
Important: installation should be made following the manufacturer's instructions, by qualified personnel only, in conformity
with the electric safety regulations in force. Please refer to the electrical diagram on FIG. 13.
At the input of the supply it is necessary to install an omni-polar magnetothermic/differential device with contact opening
equal to 3 mm and adequate cutoff power.
The earthing of the cabinet and the exact balancing of the potentials are mandatory to avoid electrical and/or electrostatic
discharges.
Warning: Before connecting the unit to the power supply, make sure that the voltage corresponds to what shown on the
serial number plate (bearing in mind that the maximum permitted variations in voltage are +/-10%). Check that the
electrical connection is made using cables with a section and length capable of withstanding the current and the power
absorbed by the island (please refer to TAB. 1.
The plug-in units are equipped with a plug and a cable of 2,5 m. length (FIG. 7) and this measurement must not be
exceeded for the connection to the wall socket. The island must be connected to its own fixed power socket (not with
extension leads or multiple sockets). The cable must be tight, protected against impacts, away from liquids, water or
sources of heat, it must not be damaged. In case of breakage of the power cable of the cabinet, it must be replaced by
the manufacturer or by institution in charge of it. The plug must be accessible even after the unit has been installed.
Warning: The unit must be installed according to the manufacturer's instructions, by qualified personnel and in
compliance with the electrical regulations in force in the Countries in which the unit is to be installed (Electrical standards
and safety laws, Accident prevention and Fire Safety Standards, Directives). Faulty installation may lead to injury to
people and animals or damage to objects for which the manufacturer cannot be held responsible.
The unit must be earthed using sockets with contact to earth. The manufacturer declines all responsibility in the event of
failure to follow this safety measure. If the unit has to be installed at a distance from the electric power sockets, the
connection must be made according to the Standards in force. It is absolutely forbidden to use adapter plugs. The
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