CONSTRUCTION FEATURES

The TC type machines, open circuit evaporative towers with centrifugal fans, are built and assembled in accordance with our ISO 9001 certified quality system.

MAGNELIS

All our machines are built as standard in Magnelis®, it is an eco-sustainable alloy made up of 93.5% zinc, 3.5% aluminum and 3% magnesium. The percentage of magnesium allows the self-repair process after cutting and punching operations and protects deformed surfaces. Another characteristic is the corrosion resistance, superior even in environments rich in chloride and ammonia. The maximum workability and greater resistance, compared to other materials, allows the use of a smaller quantity of metal coating and therefore a greater lightness of the machines.

STRUCTURE & ASSEMBLY

The standard unit is built with Magnelis® (steel, zinc, aluminium, magnesium) ZM310 type sheet metal panels to ensure maximum surface protection empirically comparable to a galvanized sheet metal with over 1000 g/m2 of zinc. The individual panels, following the cutting and folding phase, are assembled with AISI 304 (A2-70) or on request AISI 316 (A4-80) stainless steel small parts and highly adhesive butyl mastic gasket reinforced with polyester mesh inside to guarantee great shape stability and resistance to temperature variations. No welding is required in the various stages of assembly of the structure (self-supporting). The color of the sheet metal type Magnelis® is RAL 9006.

WATER COLLECTION BASIN

The basin section is built with a thick Magnelis® ZM310 sheet metal structure and is equipped with of removable anti-cavitation type filter in AISI 304L (to protect the primary circuit pump) and water make-up valve with brass/stainless steel body and floating sphere in stainless steel or polypropylene. The configuration of the basin is such as to allow the reduction of the volume of water and therefore a lower weight during operation. The surface of the basin is inclined to allow complete drainage and emptying in case of maintenance, avoiding water stagnation and preventing bacteriological development. All machine connections are made of galvanized steel (AISI 304L on request).

FILLING

The fill or exchange pack is made of PVC(PP upon request) with proprietary geometry design. The filling standard is type W1300 and on request, depending on the characteristics of the water to be used it can be type W2000 or for particularly dirty water filling W2700 is available. The geometry used is such that the heat exchange surfaces between air and water are maximized.

WATER DISTRIBUTION SYSTEM

The water is uniformly distributed by a piping system inside the machine made of PVC with a Magnelis® sheet metal distribution box >. The spray nozzles are of the non-clogging type, of medium and large diameter, in ABS and easily replaceable in case of maintenance.

VENTILATION SYSTEM

(MOTORS + FANS)

Centrifugal fans, forward blades type, are made in galvanized steel statically and dynamically balanced. Fans are assembled on a painted steel shaft supported at both ends by self- aligning ball bearings, supports in cast iron. Protection fans grids in galvanized steel, are placed as for the most recent safety rule. The motors, efficiency class IE3 with mechanical protection IP55, insulation class F, continuous duty S1 and form B3, are mounted on sturdy adjustable galvanized steel slides and placed in a weather-protected position. Motion transmission is by V-belts, calculated at 150 % of rated power. The motors are suitable to be coupled with variable frequency drives (VSD-Inverters) ) 30-50Hz. The motors are in accordance with EC 2019/1781. The terminals for power connection and the connection of any extras optional (anti-condensation heater and ptc thermistor) are inside the terminal box of the electric motor.

DROP SEPARATOR

Drift eliminators are made in PVC (PP on request) and divided in various sections to facilitate their removal in case of replacement or inspection of ventilation and water distribution system. The used drift eliminators allow a passage of drops equal to 0.001% of the droplets present at the entrance, removing water loss, potential aerosols drift that might contain Legionella bacteria.

TEST

All components are supplied assembled. Each unit, before delivery, is subjected to hydraulic testing, to ensure that there are no water leaks in the tank, and electrical to check that the electric motors have an absorption in line with the plate data.