How to keep a fridge and freezer temperature log (with a sample layout)

What to record

• Date and time of the reading.
• Which unit: give each fridge and freezer a short name or number and label it on the door.
• The display or air temperature.
• A product or simulant temperature from the warmest part of the cabinet, at least once a day.
• Whether the reading is within your limit (yes or no), so problems stand out.
• Corrective action taken if it is out of limit, and the result after re-checking.
• Initials of the person checking, and a supervisor's weekly sign-off.

A sample log layout

Print one sheet per unit per month, or one sheet per day covering all units in a small kitchen. Put the limits and the corrective action at the top of the sheet so staff don't have to look them up.

How often to check

At minimum, twice a day: at opening, which catches overnight failures, and before or after the peak service, when the cabinet is under most load. High-risk operations, display cases holding ready-to-eat food, and units in very hot kitchens benefit from more frequent checks.

Check at the same times each day. Readings taken at random times can't be compared, and staff learn that the check can slide.

Taking a reading that means something

The display shows the air temperature near the sensor. It is useful, but food is what matters. Once a day, probe a product in the warmest area, usually near the door or at the top front, or keep a sealed container of water in that position and probe it. A calibrated probe thermometer or a fridge thermometer that stays in the cabinet both work.

Avoid reading a cabinet straight after a delivery, cleaning or a long door opening, unless you note it. If a reading is high, re-check after 20 to 30 minutes with the door shut and record both values.

Writing corrective actions into the log

The most common log failure is a high reading written down with nothing after it. Every out-of-limit reading needs an action: find the cause, assess the food, re-check, and record the outcome. Put a short flow on the sheet: re-check after 30 minutes; if food is still above limit, tell the supervisor; supervisor decides on the food under the food-safety plan; call for service if the unit cannot recover.

Common logging mistakes

• Filling in the whole day's readings at once at the end of the shift. Inspectors spot identical neat entries quickly, and it defeats the purpose.
• Writing the setpoint instead of the actual reading.
• Never recording a product temperature, only the display.
• No sign-off: nobody reviews the log, so a unit runs warm every afternoon for weeks.
• Thermometers never checked against a reference, so the log is precise but wrong.
• Losing old logs. FSSAI's published Schedule 4 expects records to be kept for one year or the shelf life of the product, whichever is more; check the current text.

Paper or digital?

Paper logs are cheap and work in any kitchen. Digital data loggers and wireless sensors record continuously, alert staff by phone when a unit goes out of range, and keep records automatically. They do not remove the need for a person to review the data and act. Many businesses combine the two: continuous logging plus a daily manual check and signature.