Greenheck Fan 474051 manual Routine Maintenance, Motors, Shaft Bearings

Page 9

Routine Maintenance

Once the unit has been put into operation, a routine maintenance schedule should be set up to accomplish the following:

1.Lubrication of bearings and motor (see below).

2.Wheel, housing, bolts and set screws on the entire fan should be checked for tightness.

3.Any dirt accumulation on the wheel or in the housing should be removed to prevent unbalance and possible damage.

4.Springs should be checked for breaks and fatigue. Rubber isolators should be checked for deterioration.

5.Inspect fan impeller and housing looking for fatigue, corrosion, or wear.

When performing any service to the fan, disconnect the electrical supply and secure fan impeller.

Motors

Motor maintenance is generally limited to cleaning and lubrication. Cleaning should be limited to exterior surfaces only. Removing dust and grease build up on the motor housing assists proper motor cooling. Never wash-down motor with high pressure spray. Greasing of motors is only intended when fittings are provided. Many fractional motors are permanently lubricated for life and require no further lubrication. Motors supplied with grease fittings should be greased in accordance with the manufacturer’s recommendations. When motor ambient temperature does not exceed 104°F (40°C), the grease should be replaced after 2000 hours of running time.

CAUTION

When operating conditions of the fan are to be changed (speed, pressure, temperature, etc.), consult Greenheck to determine if the unit can operate safely at the new conditions.

Shaft Bearings

The bearings for Greenheck fans are carefully selected to match the maximum load and operating conditions of the specific class, arrangement, and fan size. The instructions provided in this manual and those provided by the bearing manufacturer, will minimize any bearing problems. Bearings are the most critical moving part of the fan, therefore special care is required when mounting them on the unit and maintaining them.

Refer to the following chart and the manufacturers instructions for grease types and intervals for various operating conditions. Never mix greases made with different bases. This will cause a breakdown of the grease and possible failure of the bearing.

Recommended Fan Bearing Lubrication Schedule - Standard Grease

Lubrication Schedule in Months*

 

 

 

Bearing Bore (inches)

 

 

Fan RPM

 

 

 

 

 

 

 

 

1⁄2 -

11⁄8 -

15⁄8 -

115⁄16 -

27⁄16

33⁄16 -

315⁄16 -

415⁄16 -

 

1

11⁄2

17⁄8

23⁄16

- 3

31⁄2

41⁄2

57⁄8

To 250

12

12

12

12

12

12

10

8

 

 

 

 

 

 

 

 

 

500

12

12

10

10

8

7

5

4

 

 

 

 

 

 

 

 

 

750

12

9

8

7

6

4

3

2

 

 

 

 

 

 

 

 

 

1000

12

7

6

5

4

3

2

1

 

 

 

 

 

 

 

 

 

1250

12

6

5

4

3

2

1

0.5

 

 

 

 

 

 

 

 

 

1500

12

5

4

3

2

1

0.5

 

 

 

 

 

 

 

 

 

 

2000

12

3

2

2

1

0.5

0.25

 

 

 

 

 

 

 

 

 

 

2500

12

2

2

1

0.5

0.25

 

 

 

 

 

 

 

 

 

 

 

3000

12

2

1

0.5

0.25

 

 

 

 

 

 

 

 

 

 

 

 

3500

12

1

0.5

0.25

 

 

 

 

 

 

 

 

 

 

 

 

 

4000

12

0.5

0.25

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5000

12

0.25

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

# of shots**

4

8

8

10

16

25

41

57

 

 

 

 

 

 

 

 

 

*Suggested initial greasing interval is based on 12 hour per day operation and 160ºF maximum housing temperature. For continuous (24 hour) operation, decrease greasing interval by 50%.

•If possible, relubricate with grease while in operation without endangering personnel.

•For ball bearings (operating) relubricate until clean grease is seen purging at the seals. Be careful not to unseat the seal by over lubricating.

•For ball bearings (idle) add 1-2 shots of grease up to

2 in. bore sizes, and 4-5 shots of grease above 2 in. bore sizes with hand grease gun.

•For roller bearings, relubricate with 4 shots of grease up to 2 in. bore size, 8 shots for 2-5 in. bore size, and 16 shots above 5 in. bore size with hand grease gun.

•Adjust lubrication frequency based on condition of purged grease.

•A high quality lithium base grease conforming to NLGI

Grade 2 consistency is recommended.

•The use of synthetic lubricants will increase lubrication intervals by approximately three (3) times.

WARNING

Lubricate bearings prior to periods of extended shutdowns or storage and rotate shaft monthly to aid in preventing corrosion. If the fan is stored more than three months, the bearings should be purged with new grease prior to start-up.

Model BCSW-FRP 9

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Contents Model BCSW-FRP General Safety Information Installation, Operation and Maintenance ManualReceiving Inspection & Maintenance during StorageUnpacking HandlingTable of Contents Ducted Inlet Installations InstallationBases Foundation and Isolation Rotatable HousingsBelt Guards Drain ConnectionRadial Gap, Overlap and Wheel Alignment Belt Drive Installation Flexible Couplings Arr OnlyBelt Drives Additional Steps for Initial Start-Up Unit Start-UpVibration Common Sources of VibrationRoutine Maintenance MotorsShaft Bearings Parts List Unit IdentificationBelt Drives Problem Cause Corrective Action TroubleshootingMaintenance Log WarrantyDate Time AM/PM

474051 specifications

The Greenheck Fan 474051 is a high-performance, energy-efficient ventilation solution designed to meet the diverse needs of commercial and industrial applications. As a leader in the ventilation industry, Greenheck is known for its innovation and reliability, and the 474051 model exemplifies these qualities with its robust features and advanced technologies.

One of the standout characteristics of the Greenheck Fan 474051 is its powerful motor, which enables high airflow rates while maintaining low noise levels. This is particularly beneficial in environments where noise reduction is critical, such as schools, hospitals, and office buildings. The motor is designed with energy efficiency in mind, helping to reduce operational costs and lower the carbon footprint, aligning with the growing demand for sustainable technologies.

The 474051 fan also incorporates state-of-the-art blade design, which enhances airflow efficiency. The blades are engineered to provide optimal performance by minimizing turbulence and maximizing air movement. This results in improved overall system efficiency, ensuring that the fan can deliver the required air changes effectively without excessive energy consumption.

Another key feature of the Greenheck Fan 474051 is its modular construction, allowing for easy installation and maintenance. The fan is designed to be compatible with various mounting options, catering to the unique requirements of different spaces. Additionally, components are easily accessible for servicing, reducing downtime and enhancing reliability.

The fan is equipped with advanced control options that facilitate precise operation in response to varying ventilation demands. Users can take advantage of various control technologies, including variable speed drives, enabling them to adjust fan speed according to real-time conditions. This flexibility not only enhances comfort but also contributes to energy savings.

Furthermore, the 474051 model is built with durable materials and finishes, ensuring longevity and resilience in demanding environments. Its corrosion-resistant housings and components stand up to harsh conditions, making it suitable for applications in manufacturing, food processing, and chemical handling, among others.

In summary, the Greenheck Fan 474051 combines energy efficiency, advanced technology, and robust construction to provide superior ventilation solutions. Whether used in commercial or industrial settings, its features and capabilities make it a reliable choice for enhancing air quality while supporting sustainability initiatives.
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