Air Shower Pass Box Maintenance and Care Guide: Ensuring Optimal Performance
创建于06.26
The Air Shower Pass Box (also known as a Cleanroom Pass-Through Chamber) is a critical component in maintaining contamination-free environments in laboratories, pharmaceutical facilities, electronics manufacturing, and other controlled environments. Proper maintenance ensures its efficiency, longevity, and compliance with cleanliness standards.
1. Filter Replacement: The Key to Clean Airflow
Filters are the most crucial part of an Air Shower Pass Box, as they prevent contaminants from entering clean zones.
Replacement Frequency
Filter Type | Replacement Interval | Replacement Trigger (Pressure Drop) |
Pre-Filter (Primary) | 1–3 months | ≥50 Pa |
Intermediate Filter (If Applicable) | As needed | ≥80 Pa (replace or clean) |
HEPA Filter (High-Efficiency) | 6–12 months | ≥400 Pa (or if airflow drops below 0.3 m/s) |
HEPA Filter Replacement Guidelines
✔ Power off the unit before replacement to avoid damage.✔ Inspect the new filter under light for any damage (do not touch the filter media).✔ Follow airflow direction arrows when installing (must match unit’s airflow).✔ Secure all panels after replacement to prevent air leaks.
2. Routine Cleaning & Sterilization
Weekly sterilization of the interior and exterior surfaces.
Check airflow velocity—if below 0.3 m/s, replace the HEPA filter immediately.
Wipe down surfaces with approved disinfectants (e.g., 70% IPA).
3. Electrical & Safety Precautions
⚠ Power Safety:
Never rapidly toggle the power switch (can damage electrical components).
Always disconnect power before servicing.
Check insulation resistance:
Normal conditions: >20 MΩ
After humidity exposure: >2 MΩ
⚠ Hazard Prevention:
❌ No modifications allowed (voids warranty & risks fire/electrical hazards).
❌ Do not use in explosive environments (not explosion-proof).
❌ Avoid pinching/pulling power cables (risk of fire or electric shock).
✔ Always ground the unit for safety.
4. Troubleshooting & Professional Service
Unusual noises or performance issues? → Power off immediately and contact the manufacturer or authorized technician.
Fuse replacement? → Use only the specified rating to prevent overheating.
Long-term storage? → Disconnect from power.
Conclusion
Regular maintenance of your Air Shower Pass Box ensures consistent airflow, contamination control, and safe operation. By following these guidelines, you extend its lifespan and maintain compliance with ISO 14644 and GMP cleanroom standards.Need professional servicing? Always rely on certified technicians to avoid operational risks.
Frequently Asked Questions (FAQ)
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