Clean shed maintenance and upkeep

How to maintain and manage the cleanliness of the cleanroom in detail?

The most important maintenance and management of the cleanliness of the cleanroom is to prevent dust from entering the cleanroom, and to adhere to the principle of preventing dust production and residue. The principles and management contents for different management objects are also different, which can be specifically divided into the following points:

1. Efficient filter efficiency, secondary scattering, and positive pressure maintenance.
From the perspective of maintenance management, the different efficiency of filters is often due to differences in wind speed and leakage caused by replacing filter materials. As the operating time of the clean room increases, the resistance loss of the system will increase, and the air volume and speed will decrease, which is beneficial for ensuring cleanliness.

2. Floor and interior decoration treatment, air blowing, etc.
In order to prevent contact and buffering with external non clean sheds when people or materials enter and exit the air shower room and transfer window, the interlocking device must be suitable for practical use and cultivate interlocking habits.

3. Cleaning of indoor and air conditioning purification systems.

4. Precautions for entering and exiting the clean room and wearing clean work clothes. Personnel and materials entering the clean room without sufficient dust removal will affect cleanliness. In addition, due to the presence of dust during indoor activities and walking, it is necessary to wear clean work clothes to prevent this phenomenon from occurring.

5. Reasonable layout plan. Due to the expansion of production scale and equipment updates, the layout of production equipment needs to be changed. Although it is not part of maintenance management, after 2 or 3 changes, the originally suitable clean conditions and temperature and humidity conditions will be altered.

6. The temperature and humidity of the clean room are usually controlled within a range of 10% or with changes in control values.

7. As the first factor that may affect cleanliness is dust generated by humans, workers entering the cleanroom must be in good mental and physical health, and it is necessary to provide them with sufficient education to enhance their sense of responsibility when working in the cleanroom. More importantly, it is important to deepen the operators' substantive understanding of the cleanroom itself.

8. Clean work clothes must be worn when entering the clean room. From a dust-free perspective, most of them are full set clean work clothes made of polyester fibers. However, as the usage time prolongs, the dust emission of this complete set of clean clothes will also increase, so regular cleaning is necessary.

9. Produced in a clean room, the unit energy consumption is high, mainly due to the high power consumption of the air conditioning system. In the air conditioning system of a clean room, as the operating time of high-efficiency filters, medium efficiency filters, and treatment efficiency filters increases, the amount of dust adsorbed on the filters gradually increases, causing an increase in pressure loss and a decrease in air volume. Therefore, it is necessary to regularly replace and clean the primary filter.