JBG2 R290, Руководство по эксплуатации, Страница: 41 / 64

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38 Self-contained refrigerating and freezing devices - Instruction manual
English © JBG- 2 (v. 1 . 1 )
Adjust the levelling feet to set the unit at a stable level – it must not vibrate or
wobble. Check the level using a spirit level by placing it on a flat part of the unit. All
feet must rest on the ground. Poor levelling can prevent proper operation or
damage to the unit (e.g. poor drainage, difficult installation and connection).
After the device is set up and levelled, remove the protective film from the display
shelves and night curtains. Before operating the unit, wash it thoroughly and wipe
it dry .
Do not move the device while it is connected to the electrical system. All set-
up, levelling and cleaning work must be carried out before commissioning.
5.2 Ventilation of the site
Chillers return the heat removed from the cooled space via the condenser, together
with the electrical energy extracted by the refrigeration plant in the form of heat to
the surrounding air. For this reason, air circulation around the equipment must be
left unobstructed.
In order to allow for sufficient air circulation, the device should not be placed close
to a wall (spacing of at least 100 mm) and the ventilation openings of the unit should
not be covered (even partially).
5.3 Air flow
The velocity of the surrounding air must not exceed 0.2 m/s. Therefore, the unit
should not be installed near a door or in a heavily ventilated area. Positioning the
unit in such a place may cause it to malfunction.
5.4 Radiant heat
Do not install the unit in close proximity to heat sources (radiators, heating devices,
air outlets, etc.) or in direct sunlight. Do not direct spotlights at the device. If
possible, avoid using light bulbs. Fluorescent lamps emit less heat.
Any heat radiation directed towards the refrigeration unit increases operating
costs and may cause the unit to malfunction or be damaged.
Self-contained refrigerating and freezing devices - Instruction manual 39
© JBG- 2 (v. 1 . 1 ) English
5.5 Condensation
Condensation, or dew point phenomenon occurs when excessively moist air
borders surfaces colder than the dew point temperature.
It should be stressed that dewing of the glass is normal if it occurs for brief periods,
e.g. during a defrost cycle when the air humidity around the unit increases rapidly.
The prolonged and frequent occurrence of glass dew should be taken as a sign that
the ventilation system of the room in which the unit is installed must be inspected.
5.6 Connection to the electrical system
The self-generator unit is a ready-to- connect compact unit.
Damaged supply connections may only be replaced by an authorised service
technician.
The circuit protection of the device should be selected according to the ratings on
the rating plate.
The device must only be connected to an outlet with a protective contact and
its own current circuit protected by a delay fuse. Never connect more than
one device to a single current circuit.
NOTE: Mains voltage and frequency must correspond to the nominal values
indicated on the unit’s rating plate
Work on electrical installations must only be carried out by a qualified
technical service using the safety standards for electrical equipment.
The device should not be connected to the mains using universal electrical
extension cords. The electrical connection must provide the nominal supply
voltage.
5.7 Connection of drainage system
Draining condensation from the furniture compartment into the tray is
prohibited if unpackaged, bulk or loose products are displayed in the device.
The condensate drain should then be connected directly to the sewer system.
Installation of the drainage system should be carried out by a qualified technical
service .