Author: Tony Pfenning
Simple question…right? The answer may be obvious but often it is not. With any collector, there are a number of parameters that will help you determine whether or not it’s time for a costly filter change.
The most obvious parameter is the pressure drop across the filters. Most manufacturers design a dust collection system to allow for 3-4” w.g. pressure drop across the filters. This means that they will deliver the design air volume with this pressure drop across the filters. Along these same lines, they would recommend replacement when the filters hit 6.0” w.g. or higher. But this is far from the only indicator.
Is there visible dust coming out of the exhaust of the dust collector? If so, this would indicate either a ruptured filter or bypass of the filter itself (dust going around the filter). Bypass and even pass through is most likely to occur during the pulse cleaning sequence when the burst of compressed air expands the filters outward. It is also at this time that the seal around gaskets is at its weakest. If dust is passing through this it’s not necessarily indicating a need to replace all of the filters. It may simply mean that one filter has a tear or that there is another issue in your collector.
Another key question to ask is whether or not the filter cleaning system is functioning properly. If the pulse cleaning system is not working- it’s not cleaning the filters. If the filters are not getting cleaned, then they will blind (become filled with particulate) and the pressure drop will increase. In this scenario, it does not necessarily mean filters must be replaced. They may simply need to be cleaned!
Are you capturing the dust at the source? This is always an important question to ask since it is the main purpose of the dust collector. If it is, then many of the other issues can be overlooked and you may be able to prolong filter replacement. If not, and historically it has been capturing the dust efficiently, this could be an indicator it is time to replace filters. However, it could also be an indication that the system design needs to be revisited and improved.
It is obviously important for any dust collection system to have filters in good condition. But simply replacing filters on a timed basis can be costing you money and may not be necessary. So the next time you think you need to replace your filters ask yourself these questions.
Key blog takeaways
- Is there visible dust coming out of the exhaust of the dust collector?
- Is the filter cleaning system functioning properly?
- Are you capturing the dust at the source?
Dust Collection Maintenance Checklist
Contact us for assistance
If you have a question, need information or would just like to chat with us, feel free to drop us a line.
If you're in need of technical product assistance on existing equipment, please contact us by phone as you will get a response more quickly: (440) 543-1900. Thank you.
"*" indicates required fields