Full range of EVAPCO brand cooling tower orginal & OEM replacement parts are available.
AXIAL PROPELLER FAN
The axial propeller type fans are constructed of an aluminum alloy and statically balanced. The fan is installed in a closely fittedgalvanized steel cowl with venturi air inlet. The fans utilize a unique soft-connect blade-to-hub design that is compatible with variable speed drives. Since the blades are not rigidly connected to the fan hub, no vertical vibration forces are transmitted to the unit structure.
SUPPER LOW SOUND FAN
The revolutionary technology of the Super Low Sound Fan is one-piece molded, heavy duty fiberglass reinforced polyester hub and blade construction utilizing a forward wept blade design. The Super Low Sound Fan is capable of reducing the unit sound pressure levels 9 dB(A) to 15 dB(A) depending on specific unit selection and measurement location.
The eliminators are constructed entirely of Polyvinyl handled sections. The design incorporates three changes in air direction and limits the water carry-over to a minimum of 0.001% of the circulating water rate. This reduces water and chemical loss. The light weight PVC eliminators are easily removed for access to the water distribution system.
WATER DISTRIBUTION SYSTEM
The water distribution system is made of schedule 40 PVC pipe and heavy-duty ABS plastic spray nozzles for corrosion protection in this key area. The nozzle have a 32mm diameter opening and are practically impossible to clog. They also have an anti-sludge ring extending into the headers to prevent sediment form building up in the diffuser opening. In addition, the spray branches have threaded end caps to allow easy debris removal. Most of coil products utilize EVAPCO’s Zero Maintenance ZM II spray nozzle.
WATER DISTRIBUTION SYSTEM
The cooling towers utilize EvapJet nozzle to ensure that every square inch of heat transfer surface receives complete and even water coverage, resulting in maximum thermal performance. EvapJet has unique oscillation spray water design, and no moving parts for less maintenance. Large orifice nozzles prevent clogging and are threaded for easy removal and positive positioning.
SMALL BELT DRIVE UNIT
G235 hot-dip galvanized steel circular access door(s) are in the upper casing for easy access to the fan motor and water distribution system.
BIG BELT DRIVE UNIT
G235 hot-dip galvanized steel rectangular access door(s) are in the upper casing for easy access to the fan drive and water distribution system.
The patented elliptical coil is all prime surface steel, encased in steel frame work with the entire assembly hot-dip galvanized after fabrication. It is designed with sloping tubes for liquid drainage and tested to 2.76MPa air under water. The elliptical design results in maximum heat transfer efficiency and minimum pressure drop. Coils are available in copper or stainless steel for corrosive or industrial applications.
WATER RECIRCULATION PUMP
Closed circuit coolers and evaporative condensers are supplied with a close-coupled centrifugal pump with a mechanical seal installed to drain on shut down. The totally enclosed, fan cooled(TEFC) motor is provided with a protective canopy as standard.
MAKE-UP FLOAT VALVE ASSEMBLY
This assembly contains a brass float valve with an adjustable plastic float. The supply of makeup water entering the unit is easilyregulated by adjusting wing nuts on the threaded float rod.
The type 304 stainless steel strainer is constructed with large removable perforated screens to reduce the need for frequent servicing.
WST inlet louvers keep water in and sunlight out of induced draft products. Compare to other louvers, algae growth of WST inlet louvers is minimized by blocking all sunlight. WST louvers are located on all 4 sides the unit, thus providing easy pan access from 360 degrees. The light weight louvers are constructed from PVC and anti-corrosion. EVAPCO offers the option of G235 hot-dip galvanized steel or stainless steel frames.
The patented EVAPAK fills design is specially designed to induce highly turbulent mixing of the air and water for superior heat transfer. The fill is constructed of PVC, will not rot or decay. Because of the unique way in which the cross-fluted sheets are bonded together, and the bottom support of the fill section, the structural integrity of the fills is greatly enhanced, making the fills usable as a working platform. The fill has excellent fire resistant qualities, and has a flame spread rating of 5 per ASTM-E84-81a.
Fan motor is specially designed for evaporated requires, ball bearing type electric motors with 1.0 service factor are standard.
WIDTH OF EACH CELL LESS THAN 2.6M
Totally enclosed, fan cooled(TEFC), ball bearing type electric motors are suitable for outdoor service. The motor is mounted externally on the unit with an adjustable motor base for ease of service. A hinged protective cover shields the motor and sheave from the eather. See front cover for picture.
WIDTH OF EACH CELL LARGER THAN 2.6M4
Totally enclosed, air over(TEAO), ball bearing type electric motors are standard. The motor is mounted on an adjustable base allowing the motor to swing to the outside of the unit ofr easy servicing.
FAN SHAFT & BEARINGS:
All belt driven units have a solid shaft of ground and polished steel. The exposed surface is coated with a rust preventative. Also available in 304SST.
FAN SHAFT BEARINGS
All belt driven units have heavy-duty self-aligning ball type bearings with grease fittings extended to the outside of the unit. Bearings are designed for an L-10 life of 75,000 to 135,000 hours, making them the heaviest duty pillow block bearings available for cooling tower duty.
The fan belt is a multi-groove, solid back, reinforced neoprene V-belt type with taper lock sheaves designed for 150% of the motor nameplate horsepower. The fan sheave is constructed of an aluminum alloy. The fans & fan sheaves are mounted on the shaft with a special cadmium plated bushing for maximum corrosion protection. Best adjustment is easily accomplished form the exterior of the unit.
ELECTRIC WATER LEVEL CONTROL
The optional electric water level control system provides accurate control of the pan water level and does not require field adjustment. The control is mounted external to the unit in a vertical standpipe. The system includes a slow closing solenoid valve and an in-line Y-strainer.
ELECTRIC BASIN HEATERS
Electric heaters are sized to maintain a +4.5℃ pan water temperature with the fans off. They are furnished with thermostat and low water protection devices to cycle the heater on and off while preventing them from energizing unless they are completely submerged. All components are enclosed in rugged, weather proof enclosures for outdoor use. Contractor, transformer or disconnects are not included in the package.
SMART SHIELDTM SOLID CHEMICAL WATER TREATMENT SYSTEM.
EVAPCO Smart shield is factory mounted and wired on EVAPCO Closed Circuit Coolers and Evaporative Condensers. Solid Chemistry provides reduced packaging, shipping and handling assuring a lower carbon footprint. Solid products eliminate the potential for liquid spills making them easier and safer to apply.
WORKING PLATFORM & LADDER WITH DAVIT
This option provides a convenient platform to perform work, allowing easy servicing of the fan motor and water distribution system. The heavy duty galvanized steel platform is self-supporting which eliminates the need for any external support. A less expensive alternative to field erected catwalks, the working platform option uses a straight ladder as standard. The working platform and ladder meet all applicable OSHA requirements.he davit option eliminates crane rentals and facilitates the removal of motors and gear drives. The davit is mounted on the side of the unit.