Signs to Replace Your Dust Collector Filters

Environmental Filter | July 7th, 2020



Unfortunately, in a dust collection system, the cartridge filters don’t last forever. But when should they be replaced?

What to Look For

The dust collection industry can get technical. In a previous blog post, we discussed proper maintenance and checklists for a dust collection system. Filters should be inspected for damage or any sign that that aren’t working properly.

1. Differential Pressure

Keep your eyes on your differential pressure gauge. It is important to make sure your filters do not fail because of excessive run time. Be sure you know what the manufacturer’s recommended change Dp is. Sometimes the gauge can become plugged, so you want to make sure lines are free of dust buildup.

2. Decrease in Air Quality

If you are noticing a decrease in air quality this might be a sign that your filters are damaged and need to be changed. This can be caused by abrasive dust or installation issues.

3. Wear and Tear

You don’t want to use filters that have noticeable damage. Things like tears in the media, loose gaskets, damaged end caps, rust, etc. However, remember that just because a filter is caked with dust doesn’t mean it has outlasted its’ purpose. Dust cake means the filters are working and deal directly with efficiency.

4. Incorrect Specifications

Incorrect Specifications – If the filters aren’t working, there may be a problem with the specifications. You don’t want incorrect filters for your collector. When buying new replacement filters from a supplier like us, make sure the supplier has the correct dimensions and specifications in order to ensure the filters work with the original equipment, application, etc. For example, certain medias work better with certain applications. Try to match the square footage of media of original filters for the replacement filters. Higher air to cloth ratios directly affect filter life.

If all the parts of the system are working together cohesively, then everything is good to go!

How Often Should You Change Filters?

In the industry, you will get a varied answer on this depending on who you ask. A good rule of thumb is to know the manufacturers’ recommended changeout differential pressure. You should also know your application and system. Changes in loading, process and dust make-up will affect the filter function and life. As differential pressure goes up, flow is reduced, most will adjust flow to keep same suction at pickup points. When changing to new filters, these adjustments need to be set to original settings for flow /Dp or new filters can prematurely plug due to excessive flow or too high of an air to cloth ratio. In other words, make sure everything lines up correctly and you have all your ducks in row.

Dust Collector Filter Replacements

At Environmental Filter we manufacture dust collector filter replacements that are designed to meet or exceed customer requirements. With filter replacements for many major brands, we can get you the filters you need.