A container unit's microprocessor-controlled...

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Question 1 of 205eccef9dbacbc34ba4d4608b

A container unit's microprocessor-controlled temperature controller is set at 8.9°C, appropriate for a chilled perishable cargo of limes. In this mode of operation, according to the illustrated temperature controller functional diagrams, what features are locked out? See illustration GS-RA-35.

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🔍 Key Concepts

• Compare Diagram A vs Diagram B in the illustration and note which control bands actually appear in each. • Think about the difference between frozen cargo control (tight temperature band with both heating and fine cooling control) and chilled perishable cargo control (protect cargo from freezing). • Focus on what the controller can still do in chilled mode: cooling and/or air circulation only — anything that does NOT appear in Diagram B is not available (locked out).

💭 Think About

• On the chilled-diagram, list every labeled function (cooling, heating, modulating cooling, air circulation). Which labels are missing compared to the frozen-diagram? • If a function is missing from the chilled-diagram’s temperature bands, would the controller be able to use that function to control temperature, or would that function be locked out? • Ask yourself why limes (a sensitive, chilled cargo) must not get too cold. Which controller functions could risk driving the temperature too low or overshooting below setpoint if they were active?

✅ Before You Answer

• Carefully verify which functions are shown in Diagram A and which are shown in Diagram B. • Confirm that in the chilled (perishable) mode there is only one type of cooling band plus an air circulation only band. • Before choosing, be certain you can state in words which features the controller does not use at all when operating as shown for chilled cargo.

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