Refrigerator Operation and Calibration

1.0 OBJECTIVE

To describe a procedure for Procedure for Operation and Calibration of Refrigerator.

2.0 SCOPE

This procedure is applicable to Operation and Calibration of Refrigerator in Microbiology Lab.

3.0 RESPONSIBILITY      

4.1 Microbiologist /Officer is responsible for the execution. 

4.2 HOD or designee is responsible for review, effective implementation and compliance to the Operation and Calibration of Refrigerator for execution. 

4.0 PROCEDURE 

4.1 Operation

4.1.1. Switch on the mains switch.

4.1.2. Open the upper freezer compartment door by holding the handle and pulling it.

4.1.3. Rotate the airflow control knob provided at center portion of the compartment in clock-wise or anti-clock-wise direction and set it as required from cold to coolest for quick cooling/normal/quick freezing as per the requirement.

4.1.4. Close the door by holding the handle and pushing it.

4.1.5. Open the lower refrigerator compartment door by holding the handle and pulling it.

4.1.6. Rotate the cooler knob provided at center portion of the compartment in clock-wise or anti-clock-wise direction and set it as required from cold to coolest at the requirement position.

4.1.7. Close the door by holding the handle and pushing it.

4.1.8. Do not switch off the mains switch and always keep it in on condition.

4.1.9. Monitor the Refrigerator twice daily with calibrated Thermometer and note down in Attachment #1.

4.2 Calibration:

4.2.1. Validation of the Refrigerator by Fix the thermal probes as per schematic diagram shown in the Attachment #2 .

4.2.2. Close the doors.

4.2.3. Once the temperature is attained to the set range start the data logger.

4.2.4. Record the data logger for every 15 minutes and Monitor the temperature for 24 hours. Note the display temperature in the calibration. 

4.2.5. Print out of the temperature mapping shall be attached with the report.

4.2.6. Acceptance criteria:  Lower zone and crisper area: should be between 0°C to 10°CFreezer zone: should be not more than -10 to -25°C.