All NC Class cooling towers are designed for low sound levels using high blade-count, wide-chord fans for maximum efficiency at low tip speeds. For those extreme, low sound applications, consider the NC Class low sound “L” models. To achieve the very lowest possible sound levels while maintaining efficiency, “L” models are carefully selected with the best available combination of motor, drive ratio, fan blade-count and blade profile.
M e c h a n i c a l l y C o r r e c t | Q u i e t b y D e s i g n |
■High Efficiency Axial Fan
Adjustable-pitch fan blades permit maximum utilization of rated horsepower—allows field adjustments to optimize tower performance.
■System 5 Geareducer
The Geareducer option requires no oil changes for five full years—the lowest maintenance requirements in the industry. Reduced waste stream and environmental impact.
Independent testing has proven a Marley Geareducer is up to 4 dBA quieter than the gearboxes used by most other cooling tower manufacturers.
Marley 2400 Geareducer
■SofTork Coupling
Absorbs excessive shock loads at start-up—forgives minor misalignment between the motor and Geareducer.
■Fan Motor
TEFC 1.15 service factor, horizontal-shaft motor designed to Marley specifications for cooling tower duty. Specially insulated for humid cooling tower service.
■Five-Year Mechanical Warranty
Five-year total mechanical equipment warranty including mechanical equipment support, plus our exclusive 5-year maintenance-free System 5 Geareducer.
