Click on any of the indicated areas to the left for details on that specific part. 1. FAN SCREENS The fan screens are galvanized steel mesh.   2. FANS - CENTRIFUGAL Centrifugal fan wheels are of the forward curved centrifugal type with hot-dip galvanized steel construction. All fans are statically and dynamically balanced for vibration free operation.   3. FANS – VANE AXIAL The wide-blade slow speed cast aluminum alloy fans are arranged in a two-stage system (i.e. front and rear fan) that is installed in a closely fitted cowl with a venturi air inlet. Narrow blade fans are supplied on evaporative condensers.   4. DRIFT ELIMINATORS The eliminators are constructed entirely of Polyvinyl Chloride (PVC) in easily handled sections. The design incorporates three changes in air direction and hooked leaving edges so as to direct discharge air away from the fans to ensure that the drift loss is minimized. The lightweight PVC eliminators are easily removed for access to the water distribution system.   5. WATER DISTRIBUTION SYSTEM The spray headers and branches are constructed of Schedule-40, Polyvinyl Chloride pipe for corrosion resistance. The water is distributed by precision molded ABS spray nozzles with large orifice openings to eliminate clogging. Nozzles are threaded into the spray header to provide easy removal for maintenance.   6. COIL The patented Thermal-Pak coil is all prime surface steel, encased in steel framework with the entire assembly hot-dip galvanized after fabrication. It is designed with sloping tubes for liquid drainage and tested to 350 psig air under water. The Thermal-Pak design results in maximum heat transfer efficiency and minimum pressure drop.   7. WATER RECIRCULATION PUMP Closed circuit coolers and evaporative condensers are supplied with a vertically installed 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.   8. 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 easily regulated by adjusting wing nuts on the threaded float rod.   9. ACCESS DOORS G235 hot-dip galvanized circular door(s) provide easy access to the sump section.   10. PAN STRAINER The type 304 stainless steel strainer is constructed with large removable perforated screens to reduce the need for frequent servicing.   FAN MOTORS – Totally enclosed, ball bearing type electric motors with 1.15 service factor are suitable for outdoor service. 11A. CENTRIFUGAL MODELS – LSTB On 4’, 5’, and 8’ wide models, 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 weather. On 10’ wide models, the motor is mounted above the fan housing, under cover, on an adjustable motor base for ease of service.   FAN MOTORS – Totally enclosed, ball bearing type electric motors with 1.15 service factor are suitable for outdoor service. 11B. CENTRIFUGAL MODELS – LPT The motor is mounted under the protective fan system enclosure on an adjustable motor base for ease of use.   FAN MOTORS – Totally enclosed, ball bearing type electric motors with 1.15 service factor are suitable for outdoor service. 12. VANE AXIAL MODELS The motor is mounted on an adjustable motor base for ease of service.   13. FAN SHAFTS Shafts are constructed of ground and polished steel. The exposed surface is coated with a rust preventative. Shafts on the centrifugal models have forged bearing journals.   14. FAN SHAFT BEARINGS Bearings on centrifugal and vane axial models are self-aligning, heavy duty grease-packed ball bearings with eccentric locking collars. Some centrifugal models also use an intermediate sleeve bearing. On vane axial models, the grease fittings are extended to the outside of the unit for ease of maintenance.   15. CENTRIFUGAL MODELS The fan drive is a v-belt type with taper lock sheaves designed for 150% of the motor nameplate horsepower. Belt adjustment is easily accomplished from the exterior of the unit.   16. VANE AXIAL MODELS The fan drive is a solid backed POWER-BAND constructed of neoprene with polyester cords and designed for 150% of the motor nameplate horsepower. The fans and fan sheaves are mounted on the shaft with a special cadmium plated bushing to provide maximum corrosion protection.   17. FILL The Polyvinyl Chloride (PVC) fill with a cross-fluted design provides maximum heat transfer efficiency. The PVC sheets are bonded together for strength and durability. The fill is self-extinguishing for fire resistance and has a flame spread rating of 5 per ASTM E 84-819. It is also resistant to rot, decay and biological attack.
Numbers in Dotted Circles Indicate Part Location Inside Unit	Questions? Call SYS-KOOL at 402.597.1449
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