In pharmaceutical, biotech and many lab environments, it is not enough for a refrigerator to work; the organisation must prove and document that it does. Qualification usually follows three stages. Installation Qualification confirms the right equipment was delivered and installed correctly, with documents, serial numbers, utilities and calibration certificates in order. Operational Qualification tests that controls, alarms, door switches and temperature settings work as specified across their range. Performance Qualification shows the unit holds the required range under real or simulated load and use, often over a defined period with mapping.
Each stage follows a written protocol with acceptance criteria and ends with a signed report. Requirements vary by organisation and regulator, so the user's quality team usually defines what is needed. Suppliers may provide documents and support, but responsibility for qualification stays with the user.
A vaccine manufacturer's QC lab in Pune installing a new +2 to +8 °C storage refrigerator would check documents and installation, test alarms and setpoints, then run a loaded mapping study before releasing it for use.