HVAC apprentices and on-site maintenance technicians handling their first installationBag-Type Medium Filter InstallationIt's easy to stumble. Common issues after installation include unit dust leakage, filter bags collapsing under airflow, and unexplained increases in air conditioning power consumption, mostly due to careless installation details.Bag Medium Efficiency FilterCommonly used in central air conditioning and pharmaceutical purification air handling units, combined with years of practical on-site installation experience, let's discuss the most common mistakes beginners make and practical tips to avoid them.
I. Three Common On-Site Installation Mistakes
First, installing the filter in reverse direction or laying filter bags horizontally. Many newcomers ignore the airflow arrow on the frame, installing filters backwards or laying bags flat, causing airflow to squeeze the filter cloth in reverse, drastically reducing filtration area and rapidly increasing pressure drop.
Second, not sealing the frame edges, leading to air bypass through cabinet gaps. Without sealing strips between the filter and slot, dirty air bypasses the filter media, doubling the wear rate of downstream HEPA filters.
Third: installing without inspecting the goods. During transportation, impacts can cause filter bag threads to unravel or holes to form, which are not easily visible. Installing them directly without inspection allows dust to penetrate and contaminate the entire duct system.
Two or three practical installation pitfall avoidance tips
Tip 1: Ensure correct airflow direction, install vertically, and remove the outer packaging film Install following the arrow direction, with all filter bags hanging vertically downward, avoiding tilting or laying flat, ensuring even airflow through each bag. Be sure to remove all outer plastic protective film; residual film wrapping the filter cloth can cause local airflow blockage, which is alsoCentral Air Conditioning Medium-Efficiency Filter Screen InstallationBasic points.
Tip 2: Apply a full circle of sealing sponge around the groove to block air leakage gaps Clean debris from the cabinet slot in advance, apply sealing strips around the entire slot, leaving no gaps after filter installation; for old retrofits with deformed cabinets and larger gaps, use sealant to fill gaps, which is reliable.Medium-Efficiency Filter Sealing TipsMingyang Purification supplies bag-type medium-efficiency filters of various specifications in stock, along with matching sealing accessories, eliminating the need for on-site makeshift materials.
Tip 3: Inspect each filter bag one by one after opening the box, avoid forceful installation Inspect each filter bag's stitching and edges for any thread breaks or damage, discarding defective ones; smoothly push multiple filter panels into the slot without bending the aluminum frame; for high-airflow units, prioritize F7 and F8 grades, reserving duct space to prevent filter bags from sticking together under high pressure.
III. Simple Self-Check Method After Completion
After full installation, run the system for 30 minutes and compare the initial differential pressure. If the differential pressure is abnormally high, the installation is faulty; if there is no floating dust at the air outlet and the differential pressure is stable, the installation is up to standard.
Conclusion
StandardizedBag-Type Medium Filter Installationwhich can extend the filter service life and save air conditioning energy costs. For non-standard air handling units requiring customizationBag Medium Efficiency Filteryou can contactMingyang PurificationCustom specifications and auxiliary materials as needed.