SOP for Operation and Cleaning of Deep Freezer : Pharmaceutical Guidelines

SOP for Operation and Cleaning of Deep Freezer

Standard operating procedure of operation and cleaning of Deep freezer used in microbiology laboratory.


       To lay down the procedure to perform the operation and cleaning of Deep freezer

2.0  SCOPE

       It is applicable to Microbiology lab.




       Head of Department


5.1  Operation of Deep freezer

5.1.1  Plug in the deep freezer
5.1.2  Switch on the mains. The green lamp lights up. The red lamp lights up whenever the compressor is on.
5.1.3  Adjust the thermostat knob to maintain the desired temperature minimum, middle and maximum.

5.2  Cleaning of Deep freezer

5.2.1  Thin frost shall be removed with brush and plastic scraper.
5.2.2  Switch ‘off’ the freezer and disconnect from the power supply to remove the heavy ice deposit.
5.2.3  Clean the inside chamber of the freezer with warm water.

5.3  Shutting - down procedure

5.3.1  Switch off the main switch.
5.3.2  Disconnect all cables when the equipment is not in use.

5.4  Temperature range

       10° C to – 25° C

5.5  Temperature monitoring

5.5.1  Monitor the temperature of deep freezer twice in a day in morning and evening.
5.5.2  Take the temperature reading from digital temperature display.
5.5.3  Whenever there is problem with digital temperature display, note the reading from the thermometer.

Related: SOP for Cleaning of Refrigerator


6.1  SOP – Standard operating procedure
6.2  °C – Degree Celsius

Ankur Choudhary is India's first professional pharmaceutical blogger, author and founder of Pharmaceutical Guidelines, a widely-read pharmaceutical blog since 2008. Sign-up for the free email updates for your daily dose of pharmaceutical tips.
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