What is the purpose of the low-side test-pressure data-plate value?

• A. To define the low-side operating temperature
• B. To select the right refrigerant
• C. To determine a safe pressure for leak testing
• D. To measure electrical current in the system

Answer: (C)

The low-side test-pressure data-plate value is crucial for determining a safe pressure for leak testing. In refrigeration and air conditioning systems, this value indicates the maximum safe pressure that the system can sustain on the low-pressure side without causing damage. When performing leak tests, it's essential to ensure that pressures do not exceed this value to maintain system integrity and avoid potential risks such as ruptures or system failures. By adhering to the data-plate specifications, technicians can confidently conduct leak tests, ensuring that any associated pressures remain within safe limits and that the system operates efficiently and safely.

Other options do not apply because the low-side test-pressure data-plate value specifically refers to pressure measurements rather than temperature definitions, refrigerant selection, or electrical current measurements in the system.