Daily maintenance of the air shower room

The material air shower is an important equipment for blowing and dust removal before personnel or goods enter the clean area. Its daily maintenance is crucial for ensuring the environmental quality of the clean area and extending the service life of the equipment. The following is the detailed content of the daily maintenance of the air shower room:
I. Daily cleaning and maintenance
The surface of the box is clean.
Every day, wipe the inner and outer surfaces of the goods shower room with a clean, soft cloth or lint-free cloth, including the door body, control panel, observation window, etc., to remove dust and stains on the surface.
If there are stubborn stains on the surface, you can dilute a neutral cleaner and wipe it, then rinse it clean with water. Avoid using strong acids, strong alkalis, or corrosive cleaners to prevent damage to the box material (such as the surface of stainless steel).
Filter cleaning and replacement.
Primary filter: Check once a week. If there is a lot of dust on the surface, it can be removed and rinsed with clean water or cleaned with a vacuum cleaner. After drying, reinstall it. It is generally recommended to replace it every 3 to 6 months, depending on the frequency of use and the amount of environmental dust.
High-efficiency filter: Regularly observe the differential pressure gauge (if any). When the differential pressure exceeds 1.5 to 2 times the initial resistance, it needs to be replaced in time. The replacement cycle of high-efficiency filters is usually 1 to 2 years, but it needs to be adjusted according to the actual usage conditions (such as a significant reduction in the air volume of the air shower).
Nozzle and air duct cleaning
Check the nozzles for blockages (such as dust or fibers) every month. You can clean them with compressed air or a soft brush to ensure smooth airflow in the air shower.
Check if there is any dust accumulation inside the air duct. If necessary, wipe it with a vacuum cleaner or a damp cloth to avoid dust accumulation affecting the air shower effect.
Ii. Maintenance of Electrical and Control Systems
Control panel and sensor inspection
Check daily whether the buttons and indicator lights on the control panel are functioning properly, such as the power indicator light and the air shower start button. If you find that the buttons are malfunctioning or the indicator lights are not on, timely maintenance is required.
Test the sensitivity of the infrared sensor: When personnel or goods enter the air shower room, the sensor should be able to sense in time and start the air shower program. If the sensor responds slowly or triggers incorrectly, the surface of the sensor should be cleaned (to avoid dust obstruction) or the installation position should be adjusted.
Maintenance of motors and fans
Regularly (monthly) listen to the operating sound of the fan. If abnormal noises (such as friction sounds or vibration sounds) occur, it may be due to dust accumulation on the fan impeller or wear of the bearings. The machine should be shut down for inspection and cleaning of the dust on the impeller. If necessary, add lubricating oil or replace the bearings.
Check whether the fan belt is loose or worn. If the belt is loose, adjust the tensioner pulley. If it is severely worn, the belt needs to be replaced.
Electrical circuit inspection
Every quarter, professional electricians should check whether the electrical circuits are loose, aged, or damaged, ensure that the terminal blocks are firm and the insulation layers of the cables are intact, and avoid the risk of short circuits or leakage.
Iii. Maintenance of the Door Body and Sealing System
Door body operation inspection
Observe whether the automatic door opens and closes smoothly, and whether there is any jamming, abnormal noise, or failure to close tightly. If the door body does not run smoothly, it may be due to dust accumulation on the track or wear of the pulleys. It is necessary to clean the dust on the track and add lubricant to the pulleys (use food-grade or dust-free lubricant).
Check whether the sealing strip of the door body is intact. If the sealing strip is aged, deformed, or damaged, it will cause air leakage and affect the sealing effect of the clean area. It needs to be replaced in time.
Interlock function test
The front and rear doors of the goods shower room usually have interlocking functions (they cannot be opened simultaneously). Test whether the interlocking is normal every day: when one door is opened, the other door should not be able to open. If the interlock fails, it may be due to a mechanical lock or an electrical control fault. Immediate maintenance is required to prevent air circulation between the clean area and the non-clean area.
Iv. Calibration of Air Shower Effect and Parameters
Wind speed test
The wind speed at the nozzle outlet is measured monthly using an anemometer. The standard wind speed is generally 20-25m/s (specifically according to the design requirements of the equipment). If the wind speed is lower than the standard value, it may be that the filter is clogged or the fan efficiency has decreased. It is necessary to check the condition of the filter and clean or replace it.
Air shower time setting
Confirm whether the blowing time setting meets the process requirements (usually 15 to 60 seconds). If the time is too short, it may lead to incomplete dust removal; if it is too long, it will affect the efficiency. Regularly check whether the time relay or program Settings are accurate. If there is any deviation, recalibration is required.
V. Safety and Emergency Maintenance
Emergency stop button test
Press the emergency stop button every week to confirm that the equipment can immediately stop running. After pressing the reset button again, it can start normally to ensure that the emergency stop function is available in emergencies.
Grounding and leakage protection
Check every quarter whether the equipment grounding is firm (the grounding resistance should be ≤4Ω), and test whether the leakage protection device is sensitive to prevent the risk of electric shock.
Vi. Maintenance Records and Cycle Management
Establish a detailed maintenance record sheet, documenting the time and content of each cleaning, inspection, and component replacement, to facilitate the traceability of equipment operation status and the formulation of regular maintenance plans.
Based on the usage frequency and equipment condition, formulate an annual maintenance plan, such as the replacement of high-efficiency filters and major overhauls of fans, to ensure that the maintenance work is systematic and standardized.
Vii. Precautions
Maintenance personnel must wear clean suits before entering the material shower room to avoid bringing in dust and contaminating the equipment.
When replacing the filter or conducting electrical maintenance, the power supply must be cut off first to ensure operational safety.
If the air shower room has been out of use for a long time (such as more than one week), it must be thoroughly cleaned and all functions tested to ensure they are functioning properly before being reactivated.
Through the above daily maintenance measures, the dust removal efficiency and equipment stability of the material shower room can be effectively ensured, providing a reliable guarantee for environmental control in the clean area. In case of complex faults (such as fan damage or control system failure), it is recommended to contact professional manufacturers or maintenance personnel for handling.