EN/10.2021/i04 © STULZ S.p.A. – all rights reserved
WLA CompACT - TRANSLATIoN oF oRIGINAL INSTRUCTIoNS
WLA CompACT - TRANSLATIoN oF oRIGINAL INSTRUCTIoNS
5.2.
Intended and unintended use
Intended use
The chiller is designed to cool liquids in an industrial environment, protected from heat sources,
according to limits and indications of technical label.
The unit is designed to be used in room with supervised and/or authorized access category (see
tab. 4 EN 378-1:2016). Consequently, on informed personnel can stay near the unit; it’s considered
that, in case of fire, the personal is aware of the intrinsic risk of the unit.
The operation safety of the system is guaranteed as long as it complies with its intended use. The
storage and operation limit values indicated on the data plate and stated in paragraph 6.1 must
never be exceeded.
COSMOTEC is not liable for damage caused by improper use. The operator is fully responsible for
this risk.
Unintended use
The use of the chiller must always comply with the standards in force and instructions provided
in this manual.
Moreover, its use is prohibited in the event it is installed:
•
Incorrectly;
•
On mobile parts or on oscillating, inclined (not levelled) supports or on supports that transmit
vibrations;
•
In areas with high heat radiation;
•
In areas with strong magnetic fields;
•
In areas with open flames;
•
In areas featuring explosive atmospheres;
•
In the presence of flammable products;
•
In areas with risk of explosion;
•
In areas with saline atmosphere;
•
In areas with aggressive atmospheres;
•
In areas excessively dusty;
•
In the presence of materials that may obstruct the air circuit after being deposited or suctioned
by the chiller.
Moreover, its use is prohibited after any modification or transformation applied but not approved
by COSMOTEC, including the use of non-original spare parts.
5.3.
Layout of the components, principle and mode operation
only chiller
The chillers described in this manual consist of:
•
Hermetic refrigerant circuit, filled with R134a refrigerant. The refrigerant circuit includes a rotary
vane compressor, condenser, an electronic thermostatic valve, and stainless steel evaporator as
brazed plate heat exchanger;
•
Hydraulic circuit;
•
Condensation module consisting of a condenser and a fan.
The chiller is controlled from the Dixell XW07K electronic regulator (designed and produced
according to COSMOTEC specification) and from a main switch placed on the side of the electronic
regulator on the chiller front panel. The electrical panel, with protection rate IP40, can be accessed
from the upper part of the unit and contains all the electrical control components of the chiller
already wired. The holes for the passage of power supply cables are located on the rear side of
the unit and are provided with cable gland sheaths.
The compressor is fixed to the base and it is found in the left rear side of the chiller (accessible by
removing the left side panel).
The condenser, with intake fan integrated, is located in the left side of the chiller and it can be
accessed from the left panel and from the front side, prior removal of the specific panels.
The evaporator as brazed plate heat exchanger is placed at the centre of the unit and it can be
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