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Seller Store bigstarminer
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Location: Oklaunion, Texas
Ships to: US,
Item: 204235691286
All returns accepted:ReturnsNotAccepted
Material:Galvanized Steel
Item Length:11′-11 3/4″
Cooling Capacity:3,000 Ton
Power Phase:3 Phase
Evapco:Evapco
Nominal Cooling Capacity:2,952
Flow Rate:328 GPM
Type:Cooling Tower
Item Height:15′-7 3/8″
ATWB 12-7L12-Z:ATWB 12-7L12-Z
Air Flow Volume:75,130
Country/Region of Manufacture:United States
Item Width:11′-10″
Item Weight:35,690 lbs.
(5 units) (ATWB 12-7L12-Z [Closed Circuit Coolers] (21p114662 — 71)(HFA)) These units were purchased for $130k each. Product Description: The ATWB is a prime-surface steel coil only closed circuit cooler, featuring CrossCool™ Internal Tube Enhancement, designed around EVAPCO’s induced draft Advanced Technology (AT) tower. The ATWB line offers the most box size configurations in the industry while also providing nominal dry cooling capacity at reduced loads. This is not true for most evaporative closed circuit coolers in the industry! The ATWB is a maintenance friendly product, designed for all routine maintenance to be performed from outside the unit. Equipment Summary: CTI Certified Thermal Performance G-235 Hot-Dip Galvanized Steel Construction Galvanized Steel Fan Guard High Efficiency, Aluminum Axial Fan High Efficiency PVC Drift Eliminators PVC Air Inlet Louvers 304 Stainless Steel Strainer(s) Premium Efficient, Inverter Capable Fan Motor(s) Multigroove, Solid Back V-Belt Type Fan Drive Extended Bearing Lubrication Lines Internal Working Platform Non-Corrosive PVC Water Distribution System ZMII® Spray Nozzles Thermal-Pak® II Coil Pump Motor EISA Compliant Fan Motor Space Heaters Mechanical Vibration Cutout Switch Aluminum Ladder 5-Probe Electronic Water Level Control Package ASHRAE 90.1 Energy Compliant IBC Standard Structural Design Series Flow Operation 1.0 Importance Factor SpecifiedEVAPCO Model ATWB 12-7L12-ZCLOSED CIRCUIT COOLERSPART 1 — GENERAL1.1 QUALITY ASSURANCEA. Unit meets or exceeds energy efficiency per ASHRAE 90.1-2019.PART 2 — PRODUCTS2.1 IBC COMPLIANCEA. The structure of this product is designed, analyzed, and constructed inaccordance with the wind and seismic load requirements of the following:2009 IBC, 2012 IBC, 2015 IBC, 2018 IBC, ASCE/SEI 7-05, ASCE/SEI 7-10,ASCE/SEI 7-16, NFPA 5000. For Importance Factor (IP) = 1.0, SDS = 1.6 (@ z/h =0) and P = 288 psf.2.2 COMPONENTSA. Materials of Construction1. All cold water basin components including vertical supports, air inlet louverframes and panels up to rigging seam are constructed of heavy gauge millhot-dip galvanized steel.2. Upper Casing, channels and angle supports are constructed of heavy gaugemill hot-dip galvanized steel. Fan cowl and guard is constructed ofgalvanized steel. All galvanized steel is coated with a minimum of 2.35ounces of zinc per square foot of area (G-235 Hot-Dip Galvanized Steeldesignation). During fabrication, all galvanized steel panel edges arecoated with a 95% pure zinc-rich compound. Upper Casing, channels andangle supports are constructed of heavy gauge mill hot-dip galvanizedsteel. Fan cowl and guard is constructed of galvanized steel. All galvanizedsteel is coated with a minimum of 2.35 ounces of zinc per square foot ofarea (G-235 Hot-Dip Galvanized Steel designation). During fabrication, allgalvanized steel panel edges are coated with a 95% pure zinc-richcompound.* Passivation is required for galvanized steel to minimize the formation ofwhite rust and maximize the service life of the unit(s).B. Fan(s):1. Fan(s) are high efficiency axial propeller type with aluminum wide chordblade construction. Each fan is dynamically balanced and installed in aclosely fitted cowl with venturi air inlet for maximum fan efficiency.C. Drift Eliminators1. Drift eliminators are constructed entirely of Polyvinyl Chloride (PVC) ineasily handled sections. Design incorporates three changes in air directionand limit the water carryover to a maximum of 0.001% of therecirculating water rate. Drift eliminators are self-extinguishing, have aflame spread of less than 25 under ASTM E84, and are resistant to rot,decay and biological attack.D. Water Distribution System1. Spray nozzles are zero-maintenance precision molded ABS with large 1-1/4″ diameter orifice and internal sludge ring to eliminate clogging. Sprayheader, branches, and riser are Schedule 40 Polyvinyl Chloride (PVC) forcorrosion resistance.E. Heat Transfer Media1. Heat transfer coil has elliptical tubes of prime surface steel, encased insteel framework with entire assembly hot-dip galvanized after fabrication.The coil assembly is designed with sloping tubes for liquid drainage andair pressure tested to 390 psig air under water. Coil shall be in compliancewith ASME/ANSI B31.5.* Passivation is required for galvanized steel to minimize the formation ofwhite rust and maximize the service life of the unit(s).F. Pump1. Unit has EISA close-coupled centrifugal pump with mechanical seal. Thepump is installed in a vertical position so that water will drain from thepump when the cold water basin is emptied. Pump motor is totallyenclosed with protective canopy for outdoor operation.G. Bleed-off1. Unit has a waste water bleed line with a manual adjustable valve provided.H. Air Inlet Louvers1. The air inlet louvers are constructed from UV inhibited Polyvinyl Chloride(PVC) and incorporate a framed interlocking design that allows for easyremoval of air inlet louvers for access to the entire basin area formaintenance. The air inlet louvers have a minimum of two changes in airdirection and are of a non-planar design to prevent splash-out and blockdirect sunlight & debris from entering the basin. Air inlet louvers are selfextinguishing,have a flame spread of less than 25 under ASTM E84, andare resistant to rot, decay and biological attack.I. Electronic Water Level Control1. Electronic water level control package has five (5) stainless steel water levelsensors (one (1) high level, one (1) high level alarm, one (1) low level, one(1) low level alarm and one (1) ground) with a NEMA 4x enclosuremounted in a cleanable Schedule 40 PVC external standpipe with slowclosing solenoid valve(s) and «y» strainer(s). Wiring is not included andcomponents must be field mounted. Valves are sized for 25 psi minimumto 125 psi maximum pressure. Standpipe may require heat tracing byothers in cold weather applications.J. Pan Strainer1. Pan Strainer(s) are all Type 304 Stainless Steel construction with large arearemovable perforated screens.K. Pipe Connection Type1. Any connections provided with a Groove (GVD) or Beveled forWelding/Grooved (BFW/GVD) conforms to standard groove specification(SGS).2.3 MOTORS AND DRIVESA. Fan Motor1. Fan motor(s) are totally enclosed, ball bearing type electric motor(s)suitable for moist air service. Motor(s) are Premium Efficient, Class Finsulated, 1.15 service factor design. Inverter rated per NEMA MG1 Part31.4.4.2 and suitable for variable torque applications and constant torquespeed range with properly sized and adjusted variable frequency drives.2. Fan motor(s) include strip-type space heaters with separate leads broughtto the motor conduit box.B. Fan Drive1. The fan drive is multigroove, solid back V-belt type with QD taperedbushings designed for 150% of the motor nameplate power. The beltmaterial is neoprene reinforced with polyester cord and specificallydesigned for evaporative equipment service. Fan sheave is aluminumalloy construction. Belt adjustment is accomplished from the exterior ofthe unit.C. Fan Shaft1. Fan shaft is solid, ground and polished steel. Exposed surface is coated withrust preventative.D. Fan Shaft Bearings1. Fan Shaft Bearings are heavy-duty, self-aligning ball type bearings withextended lubrication lines to grease fittings located on access door frame.Bearings are designed for a minimum L-10 life of 100,000 hours.E. Vibration Switch1. Unit is provided with a Vibration Cutout Switch, operating on 120 VACfeed, to protect the fan and drive assembly from damage in the event ofexcess vibration. Vibration switch is DPDT.2.4 MAINTENANCE ACCESSA. Fan Section1. Access door is hinged and located in the fan section for fan drive and waterdistribution system access.B. Basin Section1. Framed removable louver panels are on all four (4) sides of the unit for panand sump access.C. Internal Working Platform1. Internal working platform provides easy access to the fans, belts, motors,sheaves, bearings, all mechanical equipment and complete waterdistribution system. The coil surface is an acceptable means of accessingthese components.D. Ladder1. An aluminum sloped ladder will be provided for access to the motor access door.
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