<\/span><\/h3>\n\n\n\nGreen-and-white fiberglass filter media is designed with a Progressive Density Structure<\/strong>, meaning each side has a different density and filtration function:<\/p>\n\n\n\n\n- Green Side (Air Intake Side \/ Upstream Side):<\/strong>
The structure is looser with larger fiber gaps. Its function is to capture large dust particles and paint mist first while allowing smaller particles to penetrate deeper into the filter media, preventing premature surface clogging.<\/li>\n\n\n\n- White Side (Air Outlet Side \/ Downstream Side):<\/strong>
The structure is denser with smaller fiber gaps. Its role is fine filtration \u2014 trapping smaller particles and providing overall structural support.<\/li>\n<\/ul>\n\n\n\n\u26a0\ufe0f Important Warning:<\/strong>
If the white side is accidentally installed facing the incoming airflow (reversed installation), large particles will quickly clog the dense white surface. This causes a rapid increase in filter resistance (pressure drop), significantly higher power consumption, and can reduce the filter\u2019s service life by more than 50%.<\/p>\n\n\n\n<\/span>Green-and-White Fiberglass Filter Installation SOP<\/span><\/h1>\n\n\n\n<\/span>Step 1: Cleaning & Inspection<\/span><\/h2>\n\n\n\n<\/span>Key Operation Points:<\/span><\/h3>\n\n\n\nAfter removing the old filter, thoroughly clean the inside of the holding frame and guide rails. Ensure there is no remaining paint residue, dust, or foreign debris.<\/p>\n\n\n\n
<\/span>Core Purpose:<\/span><\/h3>\n\n\n\nA clean frame ensures the new filter media fits flat and tightly, preventing gaps caused by uneven debris buildup.<\/p>\n\n\n\n
<\/span>Step 2: Sizing & Direction Check<\/span><\/h2>\n\n\n\n<\/span>Key Operation Points:<\/span><\/h3>\n\n\n\nMeasure the frame dimensions and accurately cut the fiberglass filter roll to size (typically leaving an extra 1\u20132 cm for tight fitting). Double-check the installation direction:<\/p>\n\n\n\n
\n- Green Side:<\/strong> Must face the incoming airflow direction (upstream side).<\/li>\n\n\n\n
- White Side:<\/strong> Must face the outgoing airflow direction (downstream side \/ fan side).<\/li>\n<\/ul>\n\n\n\n
<\/span>Step 3: Alignment & Tight Fitting<\/span><\/h2>\n\n\n\n<\/span>Key Operation Points:<\/span><\/h3>\n\n\n\nCarefully place the filter media into the frame. Smooth the edges by hand to ensure all four sides fit tightly against the frame. The filter surface must remain flat without wrinkles, curling, or lifted corners.<\/p>\n\n\n\n
<\/span>Step 4: Final Seal Verification<\/span><\/h2>\n\n\n\n<\/span>Key Operation Points:<\/span><\/h3>\n\n\n\nInspect the entire installation carefully to confirm there are absolutely no visible gaps between the filter media and the frame. Re-tighten retaining strips or grilles to ensure the filter remains secure under airflow pressure.<\/p>\n\n\n\n
<\/span>Core Purpose:<\/span><\/h3>\n\n\n\nPrevent unfiltered bypass airflow from carrying dust particles through the system and ensure optimal performance of the negative-pressure ventilation system.<\/p>\n\n\n\n
<\/span>Frequently Asked Questions (FAQ)<\/span><\/h1>\n\n\n\n<\/span>Q1: How can I quickly determine the airflow direction in a factory system?<\/span><\/h2>\n\n\n\n<\/span>A:<\/span><\/h3>\n\n\n\n\n- For ceiling intake filtration in a paint booth:<\/strong>
Airflow moves from top to bottom (fresh air entering the room). Therefore, the green side should face upward (toward incoming fresh air), while the white side should face downward (toward the interior workspace).<\/li>\n\n\n\n- For floor or side exhaust filtration in a paint booth:<\/strong>
Airflow moves from inside to outside (exhaust air toward the fan). Therefore, the green side should face inward (toward the working area), while the white side should face outward (toward the exhaust fan).<\/li>\n<\/ul>\n\n\n\n<\/span>Q2: How often should green-and-white fiberglass filters be replaced?<\/span><\/h2>\n\n\n\n<\/span>A:<\/span><\/h3>\n\n\n\nReplacement intervals depend on operating frequency and dust load. Under normal operating conditions, filters should be replaced immediately if:<\/p>\n\n\n\n