The Arrangement 7 fan is center-hung with the impeller mounted between two bearings and an integral inlet box to direct the air into the fan from above or from the side. This fan arrangement is optimal for use when your application requires large fan impellers and/or when you want to go the extra mile for increased fan life.
Fan arrangements define the way a motor drives the fan, and how the motor mounts to the fan, based on AMCA standards. The Arrangement 7 Fan offers a maintenance-friendly and reliable design for fans with larger impellers, as the impeller is center-hung between two bearings. The entire fan assembly is assembled on a common base and can be either belt or direct drive.
Fan arrangements define the way a motor drives the fan, and how the motor mounts to the fan, based on AMCA standards. They can also be application-specific, as with the Arrangement 4V Top Mount Fan.
When designing and installing your industrial fan, it is essential to consider the full system and long term needs, including surrounding ductwork and fan maintenance.
Centrifugal fans, with their moving parts and sometimes heavy-duty air processing, require regular fan maintenance in industrial applications. You might need to clean it, you might need to balance it, you might need to repair a part, or even retrofit the fan. At some point, you’ll need access to work on the wheel and shaft. If you’re not sure you’ll be able to get into the access doors in your application, split housings might just save the day.
Insulation surrounding industrial centrifugal fans serves dual purposes of thermal and sound protection. It also creates a sheath around the fan, requiring some accommodation for access when maintenance or repairs are needed. There are multiple fan insulation types to accommodate different applications.
Industrial fans have a special job to do when used in a dust collection application. They need to get the dust-laden air past the filters in the dust collector baghouse. The system pressure varies based on how “dirty” the filters are, and you can adjust the fan speed accordingly. Properly adjusting the speed can reduce your overall power consumption, but that depends on whether or not you place the pressure gauge in the right spot.
When the operation or efficiency of a fan is off, people often jump to the conclusion that the fan isn’t working. We get it. The fan is an easy and obvious target. It’s big, with moving mechanical components. It needs power and makes noise. It blows a lot of hot air. But don’t be too quick to judge this essential component of your system. Often, the problem is not the fan, but rather the fan’s design capability doesn’t match the system requirements, or there’s a negative system effect.
You’re probably not going to be looking for a lot of “peace and quiet” on the shop floor, but you and your employees and colleagues are working there for hours at a time. You might even need to have a conversation, or just hear yourself think. Industrial fans can add to the noise level, but fortunately, you can accomplish fan noise reduction by way of an industrial fan silencer.
Fans and vibration don’t get along very well! High vibration levels can shorten fan life and even cause catastrophic failure. Fan installation setup is a key factor to protect the fan from excessive vibration. Your fan should be installed on a foundation or structure designed to either handle the vibration itself or use vibration isolation devices.
We often get questions from our customers about how to determine the best synchronous speeds for belt-driven industrial fans. The answer depends on the fan’s operating speed and motor horsepower.
Industrial fan installation and applications are full of choices, big and small, immediate and long-term. One of the small choices that can make a big difference in the long term is whether to use a Damper or a Variable Frequency Drive (VFD) to control the capacity of your industrial fan. While some may choose both options depending on their applications, many fan users make an “either-or” decision.
How often are you ready to install an industrial component like a centrifugal fan the moment it arrives at your facility? Unless it’s an emergency replacement, the answer is probably “not that often.” That means you need to think about proper fan storage to ensure your fan is ready for operation when you are ready to install it, whether that is a week or months after it arrives.
You’ve calculated all your specifications and worked to get just the right fan for your industrial application. You’re taking care to set up for maximized performance and safety, with minimized maintenance and cost. Make sure you mount your fan on the right foundation for optimal support & operation.
