When To Take the Reading of ISO 14644 for Cleaned Data Center?
When conducting ISO 14644 particle measurements for a cleaned data center, the readings shall be taken at specific times and under certain conditions to ensure accurate and compliant results. Here’s a breakdown of the appropriate timing:
1- After Cleaning and Stabilization: Immediately after the data center has been thoroughly cleaned and sufficient time has passed for the airflow and HVAC systems to stabilize.
Reason: The cleaning process can stir up particles in the air.
Stabilization time allows the particles to settle or be removed by the air filtration system (such as HEPA filters).
This ensures the reading represents the actual cleanliness of the environment under controlled conditions.
Stabilization Time: 30 minutes to 2 hours, depending on the airflow system efficiency and room size.
2- During “At-Rest” Condition: It refers to when the data center is cleaned, equipment is installed, but no personnel or operations are taking place.
Once the environment is stabilized and no activity is happening (no technicians or staff present).
Reason: This condition helps determine the baseline cleanliness level of the data center without external contamination from people or equipment operation.
3- During “Operational” Condition: It refers to when the data center is fully functional, with equipment running and personnel performing routine tasks.
Reason: Provides insights into cleanliness during normal operating conditions, which is useful for monitoring ongoing compliance.
