Sesino RAS Series Use And Maintenance

Since water resources being not sufficiently available, more and more frequently it becomes indispensable to cool the oil with
air. In some cases it is not possible to connect the air-oil heat exchanger on the oil's return line due to the presence of pressure
picks in the circuit. This is why we were forced to realize a separate circuit with autonomous circulation pump, separate pipes,
thermo-switch and electric circuit wiring.
For such cases, which are oftener and oftener, Sesino technicians have foreseen to design and launch into series production
self-contained cooling units of RAS series, which in the best way
primary hydraulic system of presses, injection molding machines, machine tools stations and other types of hydraulic
equipment.
RAS autonomous cooling groups are made by an air-oil cooler, a ventilator fitted with a power-driven pump and a thermal
adjustable electronic switch.
Trough a electric cabinet assembled with the group and an adjustable electronic switch and it's thermostatic probe, it's possible
to regulate the desired temperature of oil in the reservoir .
Generally, the oil temperature is set between 30°C and 90°C, in any case the setting temperature should be over than
environment temperature.
Maximum working pressure inside the standard cooling element is 10 bar.
The group is made with an high quality components, in order to guarantee a long life time and a low noise level.
One of the actual big problems is the energy saving. Using water for the cooling purposes we loose the heat that oil has give
to the water.
If we use the air emerging from RAS group it's possible to make re-use of the heat donated by oil by warming the area where
the RAS is installed.
Presently, the cost for water industrial usage are very high, and some companies are forced to install a closed loop chillers
for water refrigeration and the majority of them are refrigeration machines.
Energy consumption in these cases is considerably high and normally power waste is about 30%.
With RAS group series application it's possible to decrease the energy consumption at 6%, with a considerable energy saving
and consequently less working cost, plus the cheaper initial cost of equipment.
Each RAS group is manufactured in accordance with the actual accident prevention measurement standard and also in
accordance with European regulation for electrical equipments.
USE AND MAINTENANCE
SELF-CONTAINED COOLING UNITS OF RAS SERIES
Self contained cooling
performs the task of cooling the oil independently from
unit RAS