Concept image only: not a customer incident or a demonstration of probe hygiene, sampling method or safe food temperature.
The fridge display is back at 3°C. The food measured 6.3°C twenty minutes ago. Has the problem been fixed?
A recovered display answers a cabinet question. It does not close the food incident. A useful temperature record connects the food, measurement method, time history, action and person responsible for the decision. A column of cabinet readings leaves most of that story missing.
This guide shows how to build that record for commercial refrigeration in Australia. The worked incident is fictional and deliberately leaves the food’s disposition unresolved: there is not enough evidence to declare it safe.
Separate the three temperatures
A controller setpoint is the requested operating setting. The displayed value is the equipment’s sensor reading. A food measurement is evidence about the sampled food at a particular place and time. Write down which one you mean instead of labelling every value “fridge temperature”.
FSANZ’s thermometer guidance distinguishes equipment gauges from food measurements. It calls for an accessible thermometer accurate to within 1°C for businesses handling potentially hazardous food. Follow its probe hygiene and measurement guidance, and the instrument’s instructions; identify the method in the record.
Potentially hazardous food generally needs to be kept at 5°C or colder, or 60°C or hotter, unless another safe system can be demonstrated. For a chilled-storage check, a controller setting is therefore not the same thing as evidence that the food is within its required conditions. Do not choose a universal setpoint from a blog: use the appliance instructions, food requirements and validated operating procedure.
Worked incident: the display recovers before the record is complete
Our hypothetical venue checks one identified container of cooked chicken in upright U1. The example temperatures and times are invented. They establish no real food history, permitted exposure or safe corrective treatment.
| Time | Observation | What is established | What is still unknown |
|---|---|---|---|
| 07:10 | Display 3.2°C; identified container food sample 4.1°C | Two different readings recorded at that check | Other food locations and later conditions |
| 09:40 | Display 8.0°C; sample from the same identified container 6.3°C | Food sample is above the usual chilled limit | When it crossed 5°C; earlier handling and other affected stock |
| 09:45 | Supervisor notified; affected stock identified and held from use under the venue procedure | Action owner and affected lot can be traced | Final food decision; fault cause and extent |
| 10:00 | Display reads 3.0°C | Equipment sensor reading changed | Current food temperatures, cumulative history and suitability for use |
Scroll the table sideways to see every column.
The 2 hours 30 minutes between samples is an observation gap. It is not a measured duration above 5°C. It neither establishes the exact crossing time nor accounts for earlier handling. Do not enter “warm for 20 minutes” because that is how long someone remembers seeing the alarm.
The later 3.0°C display does not undo the 6.3°C food measurement or decide what happens to that food. Record the food-safety decision and its basis separately from the refrigeration repair. Re-cooling alone does not establish that food with an uncertain history is suitable to use.
The example stops here because a blog cannot supply the missing history. The responsible food-safety person must apply the venue’s established procedure and seek regulator advice where needed. Do not serve affected food while its suitability is unresolved.
Make the next check identifiable
“Fridge fine, Sam” is difficult to investigate later. Give each unit an ID and make the food or pack, location, method and instrument traceable. A consistent description lets the next person understand what was actually checked.
- Unit and location: U1, named shelf or position; do not assume one sample represents every shelf.
- Food identity: product, container or batch reference and relevant preparation or receipt record.
- Measurement: food reading, display reading in a separate field, method, time and instrument ID.
- Response: immediate action, affected stock, notification and the person authorised to decide what happens next.
- Closure: food disposition with reason, equipment status and any required follow-up evidence.
Record a surface or between-pack check as that method. Do not rename it a core food reading. Where the method cannot resolve the question, escalate for the appropriate measurement rather than inventing precision.
Keep original readings when adding corrections or later evidence. A service visit or a normal reading tomorrow should not overwrite the incident. The worked example contains an explicitly open closure row so an unfinished investigation cannot disappear behind a repaired cabinet.
Plan monitoring around the operation
The checking frequency and response limits belong in your food-safety system. Assign the task to a role that is covered on every roster, and specify who acts when a check is missed or a reading is outside the established limits. An alarm that reaches an unattended phone is an incomplete response plan.
Use receiving, preparation, display and storage records together when reconstructing a food’s history. The kitchen, delivery vehicle and service counter may all be part of that history. A single upright’s record cannot describe them all.
NSW Food Authority’s “Showing food is safe” guidance explains records and other ways relevant businesses demonstrate control under Standard 3.2.2A. Its examples help with monitoring design; they do not mean every Australian venue has identical obligations. Confirm what applies to your business with your regulator or food-safety adviser.
Send the technician a useful fault history
Food control comes first. Equipment investigation then needs more than “not cold enough”. Note the exact unit and model, displayed readings and times, alarms, observed door activity, recent loading and any change to the surrounding conditions. Provide photos of the normal loading and accessible display if useful.
Describe observations without guessing the cause. “Door found ajar at 09:35” is evidence. “Bad compressor” is a diagnosis that the technician needs to establish. Do not remove guards, work on electrical or refrigerant components or change unfamiliar controls to test a theory.
Agree how the unit’s return to service will be checked. Keep the equipment decision and affected-food decision as separate sign-offs. If a replacement is proposed, use the commercial refrigeration workload brief so the quotation addresses the actual storage, access and incoming load.
Prepare the observation and response record
For your own supplier brief, record separate display and food readings, instrument and method, history gaps, action owner and closure evidence. Replace the fictional inputs with actual evidence and leave unresolved decisions visible. Use the venue’s approved procedures and responsible food-safety personnel.
Need to discuss recurring equipment problems? Send the identified unit, observed conditions and relevant service history through Atlantic’s enquiry page. Food disposition and regulatory decisions should stay with the responsible food-safety personnel.
Sources and limits
Primary references: FSANZ, Thermometers (updated 1 October 2025); FSANZ, Food safety standards — temperature control requirements; and NSW Food Authority, Showing food is safe. These distinguish the general temperature-control requirement, measurement and evidence obligations. No alternative time-control allowance is calculated or authorised here.
The example is an incident-documentation exercise, not a food-safety program, diagnostic test or permission to use affected food. No actual venue incident, appliance performance, food disposition or universal checking interval is claimed. Use current instructions and advice for your premises and food process.
About this guide
Prepared by Atlantic Equipment. This guide helps commercial kitchens distinguish a cabinet reading from food-temperature evidence and an equipment repair from a closed food incident. The worked observation gap and editable records make missing facts, responsibilities and follow-up visible. They support a useful equipment conversation alongside the venue’s food-safety system.
