Daily maintenance regulations for box-type filters
\nBox-type filters (also known as box-type air filters) are core filtration components in industrial clean workshops, central air conditioning systems, and commercial ventilation equipment. Their maintenance effectiveness directly affects filtration efficiency, equipment energy consumption, and service life. The following are the standardized daily maintenance procedures and precautions:
\nI. Daily Inspection (Daily\/Shift)
\nPressure difference monitoring
\nRecord the initial and final resistance of the filter every day and compare the data with the rated parameters of the equipment. When the running resistance reaches 1.2 times the final resistance, cleaning or replacement should be arranged in a timely manner. If the resistance rises sharply, it may be due to the filter material being clogged or the seal failing. Immediate inspection is required.
\nVisual inspection
\nCheck whether the filter box is deformed, damaged or leaking air, and whether the sealing strip is intact and has not fallen off.
\nObserve whether there is obvious dust accumulation, oil stains or foreign matter blockage on the surface of the filter material. If it is a glass fiber filter material, pay attention to whether there is fiber shedding.
\nCheck whether the connection between the filter and the installation frame is firm to avoid misalignment and air leakage caused by vibration.
\nObservation of Operating status
\nPay attention to the operating noise of the ventilation system fan. If there is an abnormal noise or a sudden drop in air volume, it may be related to a clogged filter. At the same time, check the condition of the filter.
\nIi. Regular cleaning (Adjust the cycle according to the usage environment)
\nThe cleaning cycle of box-type filters should be determined based on the usage scenario: for clean workshops, it is recommended to clean once every 1 to 2 months; for industrial dust environments, it is recommended to clean once every 2 to 4 weeks. The cleaning method should be matched with the type of filter material.
\nPreparations before cleaning
\nTurn off the power supply of the corresponding ventilation system and hang a warning sign reading “Equipment under Maintenance” to prevent misoperation.
\nPrepare dedicated cleaning tools (soft-bristled brushes, high-pressure air guns, neutral cleaners), and dust-proof measures should be taken in the cleaning area.
\nCleaning methods for different filter materials<\/p>\n
| Tipo de material filtrante<\/td>\n | Cleaning method<\/td>\n | Precauciones<\/td>\n<\/tr>\n | ||||||||||||
| Non-woven fabric\/synthetic fiber filter material<\/td>\n | \n 1. Use a low-pressure air gun (pressure \u22640.3MPa) to blow in the reverse direction from the air outlet surface of the filter material.<\/p>\n<\/td>\n | 2. Surface oil stains can be soaked in warm water with neutral detergent for 10 to 15 minutes, then rinsed with clean water and dried. Do not directly rinse with a high-pressure water gun to avoid deformation of the filter material fibers. Strong acid and strong alkali cleaners are strictly prohibited<\/td>\n<\/tr>\n | ||||||||||||
| Glass fiber filter material<\/td>\n | Only a soft-bristled brush or a low-pressure air gun can be used for reverse blowing<\/td>\n | Fiberglass filter materials are brittle and cannot be washed with water. It is recommended to replace them after cleaning 2 to 3 times<\/td>\n<\/tr>\n | ||||||||||||
| The fan is noisy and has insufficient air volume<\/td>\n | The fan is noisy and has insufficient air volume<\/td>\n | If the filter resistance is too high or the fan load is too heavy, clean or replace the filter to restore the air volume of the ventilation system<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n Post-cleaning treatment
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