Cleaning of premises
The most common methods of cleaning clean rooms are:
- Vacuum cleaning or vacuuming (wet or dry).
- Centralized cleaning.
- Wet wiping (using wiping materials).
- Removal of dirt with sticky rollers.
The effectiveness of these cleaning methods depends on the properties of the surface to be cleaned.
Mop sponges are often used to clean rooms. The working surfaces of these mops are made of materials that are almost not subject to wear and destruction. They can be made of foamed polyvinylamide or polyurethane, or of polyester fabric. It is necessary to make sure that these materials are resistant to the disinfectant solutions used, as some materials may be unusable. The cleaning solution intended for use in clean rooms must have the following properties:
- Be non-toxic to humans.
- Do not damage the surface of clean rooms.
- Do not leave contaminants that are dangerous for production products
- Effectively isolate unwanted contaminants.
- Have a reasonable price.
Dry cleaning with a vacuum cleaner is a very common method of cleaning, because it is relatively inexpensive, and because it does not require the use of cleaning fluid, the clean room is not contaminated. Moreover, the air coming out of the vacuum cleaner should not enter a clean room without filtration. To do this, use an external system of central vacuum, or place at the outlet of the vacuum cleaner portable HEPA or ULPA filter. This filter must be installed after the vacuum cleaner motor to prevent aerosol particles from entering the clean room.
Vacuum cleaning in combination with wet is more effective because the liquid improves the removal of particles. The use of a vacuum cleaner is more effective in comparison with cleaning with a mop, as in the first case much less liquid remains on the floor, and therefore less dirt is formed after it dries. Such equipment can be used for surface cleaning in turbulent and weakly turbulent rooms, but is not suitable for perforated floors used in clean rooms with laminar air flow.
The efficiency of removing particles by sticky rollers depends on the characteristics of the adhesion of its surface. The greater the adhesion force, the greater the number of particles can be removed in this way. The efficiency of particle removal is influenced by other factors, such as the plasticity of the roller surface, which provides improved contact with the particle surface and thus increases the cleaning efficiency.
At the request of the Customer, special cleaning equipment can be selected and delivered to the set of clean rooms.