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Vaccine fridge diagnosis with Clever Logger

After installing a Clever Logger in a vaccine fridge, we noticed some very unusual temperatures

Vaccine fridge is reading very low - user story

Recently we had a user contact us with results that they didn’t understand. They had a vaccine fridge that had been working fine, but they were now starting to get alarms from Clever Logger. In fact, they were getting A LOT OF ALARMS.

When we checked their results we saw this:

CleverLogger graph shows a vaccine fridge reading too low

Notice how the troughs are dropping down below 0°C – not good for a vaccine fridge.

Not only was this fridge dropping below the mandatory 2°C for vaccines, it was dropping below 0°C. That’s really bad for vaccines. 

A common response is to doubt the results and replace the logger. Fortunately they spoke to the right person who had them do some simple checks before replacing the logger.

A real problem

The problem was that ice had formed on the compressor and air blowing across the ice was being super cooled. 

After the fridge was switched off and defrosted, the fridge returned to normal.

CleverLogger-shows-a-vaccine-fridge-after-defrost

This example shows the importance of not ignoring low readings – it may mean there is something wrong with the fridge.

Some of the quick checks we recommend you do is to look inside the fridge for the formation of ice or water, especially at the base of the fridge. 

Also ensure that there is plenty of space within the fridge for air to move freely about. Do not overstock a vaccine fridge.

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What is NATA?

The National Association of Testing Authorities (NATA) is the recognised national accreditation authority for analytical laboratories and testing service providers in Australia. It is an independent, not-for-profit organisation that provides independent assurance of technical competence. 

NATA accredits organisations to perform testing and inspection activities for their products and services. This gives consumers the assurance they need to make safe, healthy and reliable choices .

Location Views

In the top right corner of the Location page, you will find the View chooser.

There are three options: Simple, Detailed and Gauge.

change-location-view

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