6
De Rigo Refrigeration s.r.l.
IMPORTANT INSULATION CONDITIONS
Climate
The climate conditions of the environment where the counter is installed must be within the tempera-
ture range established by the counter class. To be within these parameters, it could be necessary to
install an air-conditioning system. The system should include an air humidity controller as excessive
humidity harms proper operation of the counter.
Dehumidifying the air with an air conditioner instead of with evaporators could be more economical as
the counters operate at lower temperatures and therefore absorb more electric energy at the same
cooling capacity efficiency.
Grouping several counters together in the same area could be advantageous operating-wise but could
be inconvenient for customers.
Air draughts
The counters must be positioned in such a way to limit or avoid air draughts which keep them from
operating properly. The counters must not be installed near doors or in areas exposed to strong air cur-
rents coming from ventilation or air conditioning vents, for example.
The design of the ventilation systems must take into account that there must be low air speed near
the counters, which in any case must never exceed 0.2 m/s.
Special attention must be paid to heating vents.
Thermal radiation and lighting
To limit the negative effects of radiant heat, make sure that the counters are not exposed to sunlight,
diffusers or air ducts, to uninsulated roofs or walls heated by sun or other heat sources. The penetra-
tion of radiant heat inside the counter increases operating costs and downgrades performance. Do not
point spotlights or other concentrated lighting devices towards the inside of the counters. External
fluorescent lighting is preferable to incandescent lighting and should be used.
Should incandescent lights be used, make sure that the lighting devices are appropriately ventilated by
large ventilation slots.
Surfaces at room temperature radiate enough heat to harm proper operation of the counter. This ef-
fect can be limited by installing heat-reflecting ceilings or placing the counters one in front of the
other.
Condensation
It is normal for absolute humidity to condensate on a cold surface if the air dew point is higher than
the temperature of the surface. Regardless of how a counter is insulated, condensation will be formed
if there is no ventilation around it. We therefore recommend leaving at least 60mm between the
counter and wall or any other object which can obstruct proper air circulation around the counter.
Transport and handling
The counter is shipped packed in a plastic sheet and fastened on two wooden boards which act as a
delivery support to facilitate handling. Keep the counter fully packed until it reaches the installation site
to prevent it from being damaged during transport. When the counter has been unpacked, do not dis-
pose of the packaging in common waste disposal centres, but contact specific waste collection facili-
ties for the recovery of materials and substances harmful for the environment.
The counter must be moved using a forklift truck, paying attention to the electrical devices and drains
underneath the counter.
Cleaning
The frequency at which display cabinets for vegetables, meat and other unpacked products must be
cleaned varies depending on the displayed product. Counters for preserving products such as meat,
dairy products and cold cuts must have the display surface cleaned at least once a week to prevent
the development and accumulation of bacteria.
The bottom of the tank must be washed frequently in cabinets subject to leakage of liquids or other
food products
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Summary of Contents for SAPPHIRE H
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