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. How do I document maintenance for a Cleanroom Pass Box?

To document maintenance for a Cleanroom Pass Box, it is essential to establish a maintenance log that includes details such as the date of maintenance, the type of service performed, and the personnel involved. Additionally, any repairs, part replacements, or inspections should be recorded, along with the results of any tests conducted to ensure the functionality of the pass box. Regularly reviewing this log will help maintain compliance with cleanroom standards and facilitate effective tracking of maintenance history.

2. What is the airflow pattern in a Cleanroom Pass Box?

The airflow pattern in a Cleanroom Pass Box is typically designed to ensure that contaminants are effectively removed from the items being transferred. Air is drawn into the pass box through HEPA filters, creating a turbulent airflow that dislodges particles from surfaces. This air is then expelled through strategically placed vents, ensuring that clean air flows in a controlled manner to prevent cross-contamination during the transfer process. The design may vary, but the primary goal remains the same: to maintain a clean environment.

3. What is the role of UV light in Cleanroom Pass Boxes?

UV light plays a crucial role in Cleanroom Pass Boxes by providing an additional layer of disinfection to surfaces and items being transferred. It helps to eliminate microbial contamination by disrupting the DNA of bacteria, viruses, and fungi, thereby reducing the risk of contamination in the cleanroom environment. Typically, UV lights are integrated into the pass box design and are activated during specific cycles to ensure that surfaces remain sterile before and after material transfer.

4. What certifications are important for Cleanroom Pass Boxes?

Important certifications for Cleanroom Pass Boxes include ISO 14644 for cleanroom standards, which outlines the classification of airborne particulate cleanliness. Additionally, certifications from organizations like the Cleanroom Institute can ensure compliance with industry best practices. Other relevant certifications may include CE marking for safety standards in Europe and compliance with FDA regulations for equipment used in pharmaceutical settings. These certifications assure users that the pass boxes meet necessary quality and performance standards.

5. What are common applications for Cleanroom Pass Boxes?

Common applications for Cleanroom Pass Boxes include their use in the pharmaceutical, biotechnology, and semiconductor industries, where maintaining a contamination-free environment is critical. They are utilized for transferring materials, tools, and samples between controlled areas without compromising air cleanliness. Additionally, they serve in laboratories where sensitive experiments necessitate strict adherence to cleanliness protocols.

6. What are the most popular brands of Air Shower Pass Boxes?

Some of the most popular brands of Air Shower Pass Boxes include Terra Universal, Cleanroom Technology, and Berner International. These brands are known for their high-quality construction, reliability, and adherence to cleanroom standards. Each brand offers a variety of models tailored to specific cleanroom needs, ensuring that users can find a suitable Air Shower Pass Box for their applications.

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

Determining the need for an Air Shower Pass Box depends on the level of contamination control required in your facility. If your cleanroom operations involve frequent transfer of materials or personnel between controlled and uncontrolled environments, an Air Shower Pass Box can help minimize the risk of contamination. Additionally, if you handle sensitive products in industries such as pharmaceuticals or electronics, incorporating an air shower system can enhance the overall cleanliness and compliance of your processes.

8. What is the ideal location for installing an Air Shower Pass Box?

The ideal location for installing an Air Shower Pass Box is at the entry point of a cleanroom or controlled environment where materials are transferred. It should be positioned to allow easy access for personnel and equipment while ensuring that airflows do not disrupt the cleanroom environment. Consider placing the pass box near high-traffic areas to streamline operations, and ensure it is connected to the cleanroom's HVAC system for optimal performance.

9. How do you clean the interior of a Cleanroom Pass Box?

To clean the interior of a Cleanroom Pass Box, begin by removing any items inside and ensuring the pass box is empty. Use a lint-free cloth and approved cleanroom disinfectants to wipe down all surfaces, including walls, floors, and the air shower nozzles. It’s important to follow a regular cleaning schedule and to document each cleaning session to maintain compliance with cleanroom standards. Ensure that all cleaning agents used are compatible with the materials of the pass box.

10. How do I ensure my Air Shower Pass Box meets cleanroom standards?

To ensure your Air Shower Pass Box meets cleanroom standards, verify that it is manufactured to comply with ISO 14644 and other relevant industry guidelines. Regular maintenance and validation checks shouldbe conducted to confirm that the pass box operates effectively within the required parameters. This includes monitoring airflow rates, filter performance, and overall cleanliness. Additionally, keep thorough documentation of maintenance and testing results to demonstrate compliance during audits.

11. What is the typical airflow speed in an Air Shower Pass Box?

The typical airflow speed in an Air Shower Pass Box ranges from 20 to 30 feet per minute (FPM). This speed is designed to effectively dislodge and remove contaminants from surfaces and personnel entering or exiting the cleanroom. The specific airflow speed may vary depending on the design and manufacturer of the pass box, but it should always be sufficient to maintain the cleanliness levels required for the application.

12. How do I determine the air velocity in an Air Shower Pass Box?

To determine the air velocity in an Air Shower Pass Box, use an anemometer, a device specifically designed to measure airflow speed. Position the anemometer at various points within the air shower to obtain an accurate reading of the airflow across different areas. Regular testing should be conducted to ensure that the air velocity remains within the recommended range for optimal performance and contamination control.

13. Can an Air Shower Pass Box be used for pharmaceuticals?

Yes, an Air Shower Pass Box can be used for pharmaceuticals as it helps maintain the required cleanliness and contamination control standards essential in this industry. The air shower feature effectively removes particles and microorganisms from personnel and materials before they enter sensitive areas, ensuring compliance with regulatory requirements and protecting product integrity.

14. How can an Air Shower Pass Box improve workflow in a cleanroom?

An Air Shower Pass Box can significantly improve workflow in a cleanroom by streamlining the transfer of materials and personnel while minimizing contamination risks. By providing a designated area for decontamination before entering the cleanroom, it reduces the time spent on cleaning and preparation activities. This efficient system enhances productivity and allows for a smoother operation in high-stakes environments.

15. Can I rent an Air Shower Pass Box instead of purchasing one?

Yes, you can rent an Air Shower Pass Box instead of purchasing one, which can be a cost-effective solution for short-term projects or temporary cleanroom setups. Renting allows you to access high-quality equipment without the upfront investment, and many companies offer flexible rental terms to suit your specific needs. Be sure to choose a reputable supplier that provides well-maintained and compliant equipment.

16. Can I use an Air Shower Pass Box in a laboratory setting?

An Air Shower Pass Box can be used in a laboratory setting, particularly in areas where contamination control is critical. Laboratories handling sensitive materials or conducting research that requires sterile conditions can benefit from the air shower feature, which helps reduce the introduction of contaminants. It is essential to ensure that the pass box meets the laboratory's specific requirements and cleanroom standards.

17. What types of contaminants are most problematic in cleanrooms?

Common contaminants in cleanrooms include airborne particles, microbial organisms, and chemical vapors. Airborne particles can originate from personnel, equipment, or the environment, while microbial contamination poses risks, especially in pharmaceutical and biotech facilities. Chemical vapors from cleaning agents or other materials can also compromise the cleanliness of the environment. Effective control measures, including the use of Air Shower Pass Boxes, are necessary to mitigate these risks.

18. How does cross-contamination occur in cleanrooms?

Cross-contamination in cleanrooms occurs when contaminants are unintentionally transferred between different areas or products. This can happen through various means, such as personnel movement, equipment transfers, or inadequate cleaning practices. Factors like improper airflow, poorly designed workflows, and failure to use designated pass-through systems can exacerbate the risk of cross-contamination. Implementing strict protocols and using tools like Air Shower Pass Boxes can help minimize these occurrences.