How to Know When Your Industrial Fan Needs Replacement

Fan Failure
A number of problems can occur with the industrial fan systems your facility relies on for process air and HVAC applications. Debris, dust build-up, and corrosion are examples of problems that can affect the performance of your fans and ultimately result in fan break-down.

In some cases, early detection of fan problems can prevent or reduce damage, and significantly lower repair or replacement cost. In other cases, fan replacement is the safest and most cost-effective option.

Glacier Technology has extensive experience working with industrial fans and fan related applications. The following are common signs we have identified that typically indicate fan problems. In most cases there are several things you can check before making the determination that the fan needs to be replaced.

Too Much Noise from the Fan
Excessive fan noise can indicate fan misalignment or damage. The noise may be caused by an impeller hitting the inlet or housing. It can also result from a loose shaft or bearing. Problems with the belt drive can also be indicated by excessive fan noise. Squeaking noise from the fan can be a sign of inadequate lubrication.

Fan is Unusually Quiet
This is probably the most obvious problem to spot – especially if the fan is not moving at all. It is likely to be a straightforward mechanical or electrical problem. Issues can include blown fuses, broken belts, loose pulleys, wrong voltage and/or excessive line drop or inadequate wire size, a seized bearing, or a load inertia that is excessive for the motor.

Fan is Not Performing Properly
Inadequate airflow to the fan can be caused by a backwards installed impeller, an incorrect blade angle setting, a missing cut-off or misalignment with inlet collars. Other problems can include slow fan speed, dirty or clogged inlet, inadequate running clearance, improper inlet cone-to-wheel fit, or an incorrectly set inlet vane or damper.

Fan Vibration
When excessive fan vibration occurs, check to make sure that the fan impeller is properly balanced, motor and sheaves are balanced, key lengths are correct, fan shaft seals are rubbing, and the motor has the right bearings. If everything checks out, there may be a structural or mechanical problem with the fan.

By ignoring any of these observations, you could be ignoring something important the fan is telling you.This could lead to catastrophic issues with the fan that will affect production due to a shutdown.

When you are experiencing fan problem, Glacier Technology is ready to assist. Our fan specialists are available to discuss your needs, assess your situation, and supply the right replacement fan where needed. Our team maintains strong vendor relationships so we can meet customer requirements quickly, efficiently, and affordably. We partner with the most trusted names in the fan industry, including AirPro Fan & Blower Company, Cincinnati Fan, and more. We work hard to serve our customers with the best lead times and delivery times possible.

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