Tips for Middle and Intermediate Efficiency Filter Replacement

Criteria for replacement of intermediate and secondary filters are usually based on several factors:

1. Differential Pressure Change: When the operating differential pressure of the filter reaches 1.5 to 2 times the differential pressure at the time of new installation, the filter should be replaced. This is because an increase in differential pressure means a decrease in the filter's filtration efficiency, possibly due to clogging caused by dust buildup.
2. usage time: Even if there is no significant increase in differential pressure, filters should be replaced according to the time of use. Generally speaking, the replacement cycle of middle and lower efficiency filters is 3 to 6 months, depending on the type of filter, the use environment and maintenance.
3. Filter Status: Regularly inspect the appearance and structure of the filter. If the filter is found to be broken, deformed or excessively dirty, it should be replaced immediately, even if it has not reached the end of its service life.
4. air quality: If you notice a drop in air quality, such as an unexplained odor or a noticeable increase in dust, this may be a sign that the filter is losing effectiveness and needs to be replaced.
5. Maintenance records: Maintenance logs can help document filter use and replacement, and by analyzing the maintenance logs, the actual replacement intervals of the filters can be determined.
6. environmental factor: In dusty environments or those with special cleaning needs, filters may need to be changed more frequently.
7. Filter Type: Different types of filters (e.g. G1, G2, G3, G4) have different filtration efficiencies and applicable environments, and choosing the right type of filter will also affect the replacement cycle.
8. Manufacturer's Recommendations: Follow the guidelines and recommendations of the filter manufacturer, who may provide more specific replacement criteria and maintenance recommendations.

In practice, the above factors and the manufacturer's guidelines should be combined to determine the replacement time of the middle- and lower-performance filters. Regular inspection and maintenance is the key to ensuring the effective operation of your air filtration system.

What are the safety precautions that need to be taken during the replacement of the middle and lower efficiency filters?

During the process of replacing the middle- and lower-performance filters, the following things need to be taken into account to ensure safety and efficiency:

1. preliminaryThe operator should be trained and familiar with the structure, principle and operation method of the filter. Before operation, the operating status of the filter equipment should be checked, including parameters such as inlet temperature, pressure, ventilation volume, etc., to ensure that the equipment is in normal working condition, and check whether the seals and connecting parts are intact to ensure that the equipment can be sealed normally .
2. protective measure: During operation, appropriate personal protective equipment (PPE) such as masks, gloves, goggles, etc. should be worn to prevent particulate matter and pollutants from causing bodily harm.
3. Shut down the system: Before replacing the filter, shut off the air source or close the fluid line and relieve pressure inside the line to ensure safe operation.
4. correct installation: Ensure that the specifications of the new filter are compatible with the filter frame and perform a gas tightness test to see if there is any gas leakage. Regularly check the filter element connectors to ensure that they are tight and secure .
5. Check Filter Status: Before replacing, inspect the filter for damage or excessive soiling and replace if necessary. Remove the filter from the unit using the special tool and clean the filter with compressed air or detergent to ensure that its surface is clean and free of contamination.
6. replacement cycle: Judge the replacement time according to the service life of the filter and the change of differential pressure. Generally speaking, the replacement cycle of middle and lower efficiency filters is 3 to 6 months, but the specific time should be determined according to the actual use of the environment and the performance of the filter .
7. environmental cleanup: Before replacing the filter, ensure that the operating environment is clean to avoid contamination of the new filter.
8. Records maintenance: After replacing the filter, record the time of replacement, the type of filter and any observed problems for subsequent maintenance and management.
9. Avoiding contamination: Ensure that the environment downstream of the filter is not contaminated during replacement, especially in environments with high cleanliness requirements.
10. Follow manufacturer's guidelines: Follow the replacement guidelines and recommendations provided by the filter manufacturer to ensure proper and safe filter replacement.

By following these safety precautions, you can ensure a smooth replacement process while