Do not apply a general chilled-on-top, frozen-below rule. Verify shelf, cooling source and air distribution with model instructions and a loaded trial.
First match each product's transport conditions to the container instructions. Verify shelf loading and restraint, cooling-source position and airflow gaps in maker documents. Measure a representative loaded trial and record the layout; separate product groups if results do not meet requirements.
Before placing chilled and frozen products together, check product conditions and the container's approved use. Do not assume a universal shelf order or airflow pattern.
Use model drawings to check shelf load rating, locking method and space for cooling elements. Assess contact, tipping and lid-pressure risks.
Trial representative products and layout, taking readings at suitable points. Compare results with acceptance criteria and log shelf arrangement and measurement points with the lot.
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