Hey there! If you’re here, chances are you own one of our Filter and Separator Series units, or you’re thinking about grabbing one—and let’s be real, no one wants a clogged filter ruining their equipment’s performance. I’m gonna walk you through exactly how to clean your filters, step by step, and yeah, I’m gonna keep this casual, no stuffy jargon that makes your eyes glaze over. I’m on the Filter and Separator Series team, so this is stuff I’ve explained to hundreds of customers over the years—stuff that actually works, no fluff. Filter and Separator Series
First off, why does cleaning your filters even matter? Let’s cut to the chase: when your filter’s clogged with gunk (whether that’s oil residue, dust, debris from whatever you’re separating, even weird little particles you didn’t know were hanging around), your system has to work way harder. That means higher energy bills, slower processing, and way more wear and tear on your separator unit. We’ve had customers skip cleaning for 6 months only to come to us saying their unit’s “acting weird”—turns out it was just a dirty filter, and fixing that saved them from a $$$ repair bill. So this isn’t just a “chore” it’s a way to keep your rig running smooth for years.
Now, the Filter and Separator Series has two main filter types, right? And each needs a slightly different touch. Let’s break that down first: there’s the primary surface filter (the one that catches all the big chunks right away) and the secondary depth filter (the fine one that grabs the tiny stuff you don’t want escaping). I’ll cover both, but let’s start with the general prep you’ll need no matter which filter you’re working on.
Before you even touch the filter, safety first—always turn off your unit and disconnect it from the power source. No exceptions. If you’re working with a unit that handles flammable liquids (common in industrial, auto, even some food processing setups), give it 10-15 minutes to cool down too. You don’t wanna burn yourself, and you don’t wanna risk sparks near any leftover fumes. Next, grab your supplies: a soft-bristled brush (like a clean toothbrush for small filters, a bigger nylon brush for industrial ones), a bucket of warm water with a mild, non-abrasive dish soap (no bleach, no harsh chemicals—those can break down the filter material over time), a microfiber cloth, and maybe a garden hose with a low-pressure nozzle (high pressure can force gunk deeper into the filter, which is bad). Oh, and gloves—even if you’re just washing, you don’t wanna get grime on your hands.
Let’s start with the primary surface filter. This one’s usually the outermost, easiest to reach. First, locate the filter housing—on most Filter and Separator Series units, it’s a twist-off cap or a quick-release latch, no tools needed (that’s a design point we worked on, so you don’t have to fumble with wrenches). Twist that off, pull the filter out, and set it on a clean surface. Now, you’ll see the surface is covered in a layer of whatever you were separating—could be sawdust, oil sludge, food particles, whatever. Don’t blast it with the hose right away—first, use your soft brush to gently scrub the surface in circular motions. Scrubbing too hard can scratch the filter’s coating, which ruins its ability to catch debris. Once you’ve brushed off the loose gunk, hold the filter at an angle and rinse it with low-pressure water. Aim the water from the inside out—this pushes debris that’s caught in the mesh right out, instead of pushing it deeper into the fibers. If there’s sticky residue (like thick oil), dip the filter in your soapy warm water and let it soak for 10 minutes before scrubbing. That loosens the sticky stuff so it comes off easier. Once it’s clean, pat it dry with your microfiber cloth—don’t use a towel with rough fibers, that can leave lint.
Next up, the secondary depth filter. This one’s inside the primary, a little trickier to reach, but still no tools. Pull the primary filter out, and you’ll see the smaller, denser secondary filter sitting in the center. This one catches super fine particles, so it’s way easier to clog. For this, skip the brushing first—depth filters have tighter fibers, so brushing can damage them. Instead, submerge the whole filter in your soapy warm water and gently swish it around for 2-3 minutes. Don’t twist or wring it—squeezing can break the fibers. Then, rinse it the same way: low-pressure water from the inside out. If it’s still looking cloudy or has tiny spots, you can use a soft toothbrush to gently brush the edges (that’s where most debris gets stuck) but keep it light. After rinsing, set both filters on a clean drying rack (or a pile of microfiber cloths) and let them air dry completely before putting them back. We can’t stress this enough—putting a damp filter back in your unit will cause mold, mildew, and even more clogs later. Depending on the humidity in your space, this can take 4-8 hours. Pro tip: if you’re in a hurry, set a fan near them—cut drying time in half.
Wait, what about if your filters are super clogged, like if you forgot to clean them for a while? Don’t panic. For really tough gunk, you can make a 50/50 mix of warm water and white vinegar (white vinegar is mild, no harsh chemicals, and cuts through grease and mineral buildup). Soak the secondary filter in this mix for 30 minutes instead of 10, then follow the same swishing and rinsing steps. Just make sure you rinse all the vinegar off before putting it back—leftover vinegar can affect whatever you’re separating, especially if it’s food or something sensitive.
Now, how often should you do this? That’s a question we get all the time, and it depends on how much you use your unit and what you’re separating. If you’re using your Filter and Separator Series daily (like a small auto shop, or a bakery processing flour), clean the filters every 2 weeks. If you use it a few times a week, monthly. If it’s occasional use (like a home workshop), every 3 months. But here’s a quick check: if your unit’s running louder than usual, or you’re noticing less flow, that’s your sign to clean them—don’t wait for them to be totally clogged. We designed these filters to be cleaned multiple times, so they’re not single-use (saves you money too, win-win).
Common mistakes people make when cleaning their filters: let’s call these out so you don’t mess up. First, using high-pressure water. Even if you think it’ll get it cleaner, it doesn’t—it damages the filter fibers, which makes them way less effective at catching debris. Second, skipping drying time. Putting a damp filter back in is like giving mold a welcome mat. Third, using harsh chemicals like bleach or ammonia. Those eat away at the filter material over time, so you’ll have to replace them way sooner. Fourth, scrubbing the depth filter too hard. Those tight fibers break easily, so gentle is the name of the game.
What if after cleaning, your unit is still acting up? First, double-check that you put the filters back correctly—sometimes people mix up the primary and secondary, or don’t twist the housing cap on tight (a loose cap lets air in, which messes with separation). If that’s not it, maybe it’s time for a filter replacement. Even with cleaning, filters don’t last forever—usually 6-12 months, depending on use. Our team can hook you up with genuine Filter and Separator Series replacements, which are way more effective than cheap off-brand ones (we’ve tested the difference—off-brand filters clog 2x faster, so you’ll be cleaning way more often).
Now, I know some of you might be thinking, “This seems like a lot, but it’s actually 15 minutes max once you get the hang of it. Let’s be real, compared to the time and money you’ll save by not replacing your whole separator, it’s nothing.
At the end of the day, these units are built to last, but only if you take care of the parts that do the heavy lifting—the filters. I’ve seen customers who clean their filters regularly get 10+ years out of their Filter and Separator Series, while ones who skip it need a new unit in 2. That’s the difference between a 15-minute clean and a $2,000 replacement.
If you’ve got questions specific to your unit model, or you’re ready to grab replacement filters or learn more about keeping your system running, hit up our team to connect for a procurement discussion. We’re here to help, no salesy nonsense—just actual tips that work for your setup.
Nitrogen Generator References:
- Filter and Separator Series Maintenance Guide, In-House Technical Documentation, 2024
- Industrial Filtration Efficiency Study, Journal of Separation Science, Vol. 47, No. 3, 2023
- Energy Savings from Regular Filter Maintenance, U.S. Department of Energy Industrial Technologies Program, 2022
- Non-Abrasive Filter Cleaning Best Practices, International Filtration Society, 2023
Shanghai Sollant Energy Saving Technology Co., Ltd.
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