Bearing Replacement

Both drive bearings are accessible from the ground on all Vektor-CD fans. Whether direct or belt driven, the bearings, along with other serviceable drive components (belts, motors, sheaves) are accessible by removing the motor cover panel. Please contact Greenheck Fan Corporation for specific instructions on the replacement of the bearings specific for each Vektor-CD fan. Please include fan identification numbers with the request to ensure that proper instructions are received.

Note: Bearing replacement could require moving of fan wheel. See Radial Gap, Overlap & Alignment section to re-align wheel upon bearing reinstallation.

Radial Gap, Overlap & Wheel Alignment

Efficient fan performance can be maintained by having the correct radial gap, overlap and wheel alignment. These items should be checked after the fan has been in operation for 24 hours and before start-up after the unit has been serviced.

Radial gap is adjusted by loosening the inlet cone/ ring bolts and centering the cone/ring on the wheel. If additional adjustment is required to maintain a constant radial gap, loosening the bearing bolts and centering the wheel is acceptable as a secondary option.

Overlap is adjusted by loosening the wheel hub from the shaft and moving the wheel to the desired position along the shaft. The transition between the inlet cone and wheel should be as shown; there is a smooth feel to the profile when moving from one component to the other. Overlap on double width fans is set by having equal spacing on each side of the wheel.

Overlap

Inlet Cone to Backplate Distance

Unit Size	“A” Dimension
Unit Size		(inches)
		(inches)

12	4	± 1⁄8
15	5	± 1⁄8
18	63⁄8	± 1⁄8
22	713⁄16	± 3⁄16
24	85⁄8	± 1⁄4
27	97⁄16	± 1⁄4
30	109⁄16	± 3⁄8
33	117⁄16	± 3⁄8
36	123⁄4	± 3⁄8
40	143⁄16	± 3⁄8
44	159⁄16	± 3⁄8
49	171⁄8	± 1⁄2
54	1813⁄16	± 1⁄2
60	2015⁄16	± 1⁄2
66	227⁄8	± 1⁄2

Radial

Gap

Wheel

Inlet

Cone

Vektor-CD Centrifugal Laboratory Exhaust 13

47555 specifications

The Greenheck Fan model 47555 represents an innovative solution in air movement technology, designed for various applications requiring efficient and reliable ventilation. This powerful fan embodies advanced engineering and cutting-edge design to optimize airflow while maintaining energy efficiency.

One of the main features of the Greenheck 47555 is its robust construction. Built with high-grade materials, it withstands the rigors of commercial and industrial environments, ensuring longevity and durability. The fan is designed for easy installation and maintenance, which minimizes downtime and operational disruptions.

The 47555 utilizes an advanced airfoil blade design, which enhances performance by maximizing airflow and reducing noise levels. The aerodynamic shape of the blades is specifically engineered to move air efficiently, reducing power consumption while providing optimal ventilation. This characteristic aligns with the growing demand for environmentally friendly solutions in today’s market.

Equipped with a direct drive motor, the Greenheck 47555 offers increased reliability and reduced maintenance needs, as there are fewer moving parts that can wear out over time. The motor is designed to provide peak efficiency at various operating conditions, ensuring that energy usage is minimized without compromising performance.

The fan also includes adjustable speed options, allowing users to tailor airflow to specific requirements. This feature enhances control over ventilation and can contribute to energy savings, especially in applications where variable airflow is needed throughout the day.

Incorporating advanced technology, the Greenheck 47555 is capable of integrating with building management systems for remote monitoring and control. This connectivity enables operators to manage airflow and energy use proactively, aligning with modern smart building initiatives.

Additionally, the unit is available in various sizes and configurations, making it adaptable to a wide range of applications, from commercial kitchens to industrial warehouses. Customization options are also offered to meet unique project specifications.

In summary, the Greenheck Fan model 47555 is a powerful, reliable, and efficient choice for those looking to maintain optimal air quality in their spaces. With its advanced features, durable construction, and energy-efficient design, it meets the demands of modern ventilation needs while contributing to sustainability goals.