CONSTRUCTION FEATURES

TAP-type machines, open-circuit evaporative towers with prementi axial fans, are built and assembled in accordance with our ISO 9001 certified quality system

MAGNELIS

All our machines as standard are constructed of Magnelis®, which is an environmentally sustainable alloy consisting of 93.5 percent zinc, 3.5 percent aluminum and 3 percent magnesium. The percentage of magnesium enables the self-repair process after cutting and punching operations and protects deformed surfaces. Another characteristic of this material is resistance to corrosion, superior even in environments rich in chloride and ammonia. The maximum workability and greater resistance, compared to other processes, allows the use of a smaller amount of metal coating and therefore a greater lightness of the machines.

STRUCTURE & ASSEMBLY

The standard unit is constructed of sheet metal panels type Magnelis® (steel, zinc, aluminum, magnesium) panels to grant the maximum level of surface protection. Comparable empirically to a galvanized sheet with over 1000 g/m2 of zinc. The single panels, after the phase of cutting and folding, are assembled with AISI 304 (A2-70) on request AISI 316 (A4-80) e guarnizione in butyl mastic highly adhesive reinforced with polyester mesh inside to guarantee great shape stability and resistance to temperature variations. During the assembling of the structure, welding operations are not foreseen (self-supporting). The coloring of the sheet metal type Magnelis® is a RAL 9006.

WATER BASIN

Basin section is made with heavy thick panels of Magnelis® ZM310 thick and is equipped with a removable anti-cavitation type filter AISI 304L (to protect the primary circuit pump) and water make-up valve with brass/stainless steel body and stainless steel or polypropylene floating ball. All the unit connections are in 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

Water is evenly distributed by a piping system inside the machine made of PVC with sheet metal distribution box Magnelis®. Spray nozzles are of suitable diameter to prevent any clogging and are made in ABS and easily replaceable in case of maintenance. Pipes connecting water pump to internal distribution pipework are made in PVC, easily removable during circuit cleaning, as for the most recent sanitary rules (anti- legionella).

VENTILATION SYSTEM

(MOTORS + FANS)

The fan unit is located in the basin section, housed on a sturdy galvanized steel structure fixed to the frame that
Supports the whole unit. Axial fans are built with blades in high efficiency glass fiber reinforced polypropylene (PPG), hub in aluminum, compass and bolts in galvanized steel. Protection fans grids are made in galvanized steel. The motor, efficiency class IE3, with tropicalized IP56 mechanical protection, insulation class F, continuous duty S1, form B3 and automatic condensate drain, is keyed directly to the axial fan (direct coupling). Motors are suitable to use together with frequency inverter (VSD-Inverter) 30-50 Hz. Electric motors are in accordance to the EU 2019/1781 norm. 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.

DRIFT ELIMINATORS

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, prior to delivery, undergoes hydraulic testing to ensure that there are no water leaks in the tank, and electrical testing to verify that the electric motors have a power draw in line with the nameplate data.