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Replacement frequency of major cleanroom decontamination equipment

Replacement frequency of major cleanroom decontamination equipment

Clean room equipment such as clean bench, laminar flow hood, air shower room, transfer window, air-conditioning unit, etc., which are equipped in the clean room, their normal maintenance, regular inspection is an important condition to ensure the cleanliness of the clean room.

1. Conditions for replacement of high-efficiency filters: the airflow speed is reduced to a low limit, even after replacing the primary and secondary air filters, the airflow speed still cannot be increased; the resistance of high-efficiency filters reaches twice the initial resistance; the high-efficiency filters have leakage that cannot be repaired; it is recommended that they be replaced at least once a year.

2. Inspection and replacement of medium-effect filters: Each air box is equipped with bag-type medium-effect filters, which are used to further filter and remove dust from the new air and return air, and it is recommended to be inspected and replaced once every three months or the frequency of inspection or replacement should be increased or decreased depending on the situation. When replacing the filter, care should be taken not to break the filter bag or deform the frame, so as not to affect the filtering effect.

3. Primary filter inspection and replacement: each fan unit in the new windpipe in the vicinity of the entrance with a primary filter, which is mainly used to prevent the new wind to bring in dust, mosquitoes, and other insects into the air purification system. Therefore, it is necessary to check and replace it, and it is recommended to check and replace it once every 45 days, or increase or reduce the frequency of checking and replacing it as the case may be.

4. To ensure the accuracy of the temperature in the plant, the daily operator should regularly check the purification air conditioning unit to determine whether the unit is running normally, and if there is no abnormal sound.
 
For the characteristics of the clean room, the need to develop appropriate management measures and necessary countermeasures, and strict implementation of the process and equipment management system is necessary. In the operation and maintenance management of the clean room, if the operation is not scientific and strict, it will make the air cleanliness of the clean room gradually decline, resulting in the actual production of several indicators in the environment deviate from the specified requirements, so that the product quality declines, or even unqualified.
 
The above is a general clean room, clean room in the daily maintenance of the use of precautions, can be said to be very cumbersome, so to protect the maintenance of clean room stability, and reliability, companies often need to be equipped with professional maintenance department to ensure that the clean room is often in a good state of operation.