Airflow Regime: Recirculating airflow

• The working principle of air shower transfer window is introduced as follows:

• Structural design: the air shower transfer window is usually made of stainless steel or other anti-corrosion materials, with an internal air shower system.

• Objects placed: the objects to be transferred are placed in the transfer window.

• Door control system: the transfer window is equipped with a double door system, the inner and outer doors cannot be opened at the same time to prevent contamination.

• Activate air shower: When the inner door is closed, the user can press the start button to activate the air shower system.

• Air Filtration: High efficiency filters (such as HEPA filters) in the air shower system filter particles and microorganisms in the air.

• High Velocity Airflow: Filtered air is ejected at a high velocity, creating an airflow that cleans the surface of the item.

• Time Setting: The air drenching time is usually set between a few seconds to more than ten seconds, adjusted according to demand.

• Exit: After the air drenching process, the inner door opens and the items are transferred to the clean area.

• Maintenance and inspection: Regularly check and replace the filter to ensure the effect of air shower.

• The above is an extremely brief introduction of the working principle of air shower transfer window.

• Support stand or Base box

• Onboard LED light and/or UV light

• Internal shelves

• Door release buttons

• Interlock release rocker switches

• Buzzer system (to alert personnel on the opposite side during material transfer)

• Intercom system

• Fan fault alarms with customized blowers

• Lead shielding

• Roller Conveyors (only for DFLH)

• Auto sliding PVC doors (only for DFLH)

• Rails to hang gowns (only for DFLH)

1. What are the electrical requirements for an Air Shower Pass Box?

The electrical requirements for an Air Shower Pass Box typically involve a standard power supply, often 110V or 220V, depending on the model. Additionally, the unit may require a dedicated circuit to ensure proper operation and prevent overload. It's essential to check the manufacturer's specifications to ensure compliance with local electrical codes.

2. How does the air shower cycle work in an Air Shower Pass Box?

The air shower cycle in an Air Shower Pass Box involves a sequence of events designed to remove contaminants from surfaces. When an item is placed inside the pass box, the following occurs:

• Activation of the air shower system

• High-velocity air jets release to dislodge particles and dust

• Filtration of the air before it is recirculated

This process typically lasts for a predetermined time, ensuring that items are adequately decontaminated before entering the cleanroom.

3. Are there automatic models of Air Shower Pass Boxes available?

Yes, there are automatic models of Air Shower Pass Boxes available on the market. These models are equipped with sensors and automated controls that streamline the operation. Features may include:

• Touchless activation

• Automatic duration settings for air showers

• Integration with cleanroom monitoring systems

These advancements improve efficiency and reduce the need for manual intervention, making them ideal for high-demand cleanroom environments.

4. How do I know if I need an Air Shower Pass Box?

If your facility requires strict contamination control, you may need an Air Shower Pass Box. Consider the following factors:

• The level of cleanliness required in your operations

• The frequency of material transfers between environments

• Existing contamination issues and their impact on product quality

Assessing these factors will help determine the necessity of an Air Shower Pass Box in your cleanroom operations.

5. What specifications should I consider when purchasing an Air Shower Pass Box?

When purchasing an Air Shower Pass Box, consider several specifications to ensure it meets your needs. Key aspects include:

• External dimensions and internal capacity

• Airflow rate and filtration efficiency

• Power requirements and automation features

Reviewing these specifications will help you select a unit that fits your cleanroom requirements effectively.

6. How do I choose the right location for a Cleanroom Pass Box?

Choosing the right location for a Cleanroom Pass Box is crucial for maintaining an effective contamination control strategy. Key considerations include proximity to entry and exit points, ensuring it is placed within a controlled airflow zone, and avoiding high-traffic areas to minimize the risk of contamination. Additionally, consider the layout of the cleanroom to facilitate smooth material transfer while maintaining cleanroom integrity.

7. How often should I perform an air quality test in my Cleanroom Pass Box?

It is recommended to perform an air quality test in your Cleanroom Pass Box at regular intervals, typically every 6 to 12 months. The frequency may vary based on usage, environmental conditions, and specific industry standards. Regular testing ensures that the filtration system is functioning optimally and helps identify any potential contamination issues before they affect the cleanroom environment.

8. How do I choose the right filter for my Air Shower Pass Box?

Choosing the right filter for your Air Shower Pass Box involves considering the type of contaminants you want to remove and the required efficiency level. Key factors include:

• Filter type (HEPA, ULPA, etc.)

• Particle size efficiency

• Replacement intervals and maintenance needs

These considerations will ensure that your Air Shower Pass Box maintains its effectiveness in controlling contamination.

9. Can I retrofit an existing pass-through with an Air Shower system?

Yes, it is possible to retrofit an existing pass-through with an Air Shower system. This process typically involves installing air jets and filtration mechanisms while ensuring that the structural integrity of the pass-through is maintained. Consulting with a professional who specializes in cleanroom technologies is advisable to ensure the retrofit meets operational standards and complies with cleanroom regulations.

10. What is the role of a Cleanroom Pass Box in contamination control?

A Cleanroom Pass Box serves a critical role in contaminationcontrol by providing a secure method for transferring materials between different cleanroom areas without compromising cleanliness. It acts as a barrier that minimizes the risk of contamination during the transfer process. Key functions include:

• Preventing direct access between different environments

• Facilitating decontamination through air showers or HEPA filtration

• Ensuring compliance with cleanroom protocols and standards

This system is essential for maintaining the integrity of controlled environments, particularly in industries like pharmaceuticals and biotechnology.

11. How does air pressure affect the performance of an Air Shower Pass Box?

Air pressure plays a significant role in the performance of an Air Shower Pass Box. The effectiveness of the air shower system in removing contaminants is directly related to the pressure differential created between the inside of the pass box and the surrounding cleanroom environment. Higher air pressure within the box helps ensure that air flows outward, preventing the ingress of unfiltered air. Properly balanced air pressure is crucial for:

• Maximizing airflow and filtration efficiency

• Maintaining a stable cleanroom environment

• Reducing the risk of contamination during material transfer

Regular monitoring and adjustments are necessary to maintain optimal air pressure levels.

12. How does particle size impact the performance of Cleanroom Pass Boxes?

Particle size significantly impacts the performance of Cleanroom Pass Boxes as different filtration systems are designed to capture specific particle sizes. Filters are rated based on their efficiency at removing particles of various diameters, which can influence the overall cleanliness of the environment. For effective contamination control, consider:

• HEPA filters, which capture 99.97% of particles 0.3 microns and larger

• ULPA filters, which target even smaller particles, providing higher efficiency

• The types of contaminants commonly encountered in your specific application

Selecting the right filter based on particle size is essential for maintaining air quality and compliance in cleanroom environments.

13. How does an Air Shower Pass Box function?

An Air Shower Pass Box functions by utilizing high-velocity air jets to blow away dust and contaminants from items placed inside before they enter a cleanroom. The process begins when an item is loaded into the pass box, activating the air shower system. The air jets generate turbulence around the item, dislodging particles, which are then filtered out by the integrated HEPA or ULPA filters before the air is recirculated. This ensures that only clean items are allowed into the controlled environment, significantly reducing the risk of contamination.

14. What is the purpose of the double-door system in a Cleanroom Pass Box?

The double-door system in a Cleanroom Pass Box serves multiple purposes, primarily aimed at preventing contamination. This design creates an airlock effect, which ensures that only one door can be opened at a time, thereby minimizing the risk of unfiltered air entering the cleanroom. Key benefits include:

• Enhancing isolation between cleanroom and non-cleanroom areas

• Facilitating controlled access and material transfer

• Maintaining consistent air pressure and cleanliness levels

This dual-door mechanism is crucial for maintaining the stringent standards required in controlled environments.