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Difficulty: MediumDomain-Specific and Technical Vocabulary

An English translation of a Spanish technical manual for a commercial refrigeration system contains the following instruction:

'Prior to charging the refrigerant, the technician must verify the hermetic tightness of the system. If the vacuum test reveals a pressure rise that cannot be sustained below 500500 microns after isolating the pump, a system sweep using pressurized dry nitrogen is mandatory. This procedure displaces residual moisture and dilutes any non-condensable gases that may have contaminated the circuit during assembly.'

According to the guide, what is the main function of the 'system sweep'?

  1. To remove remaining moisture and unwanted gases from the system's tubingAnswer
  2. B
    To permanently seal any micro-leaks in the refrigeration lines
  3. C
    To measure the level of contamination inside the compressor
  4. D
    To isolate the vacuum pump to prevent it from overheating during the test

Answer

To remove remaining moisture and unwanted gases from the system's tubing
The correct option correctly identifies that a 'system sweep' serves to purge the lines of residual moisture and non-condensable (unwanted) gases. The text states that the procedure 'displaces residual moisture and dilutes any non-condensable gases'.

Step-by-Step Solution

1
Analyze the technical manual excerpt for the target term 'system sweep'.
The manual states: 'This procedure displaces residual moisture and dilutes any non-condensable gases...'
Identifying the description of the procedure helps define its functional role within the process.
2
Map the technical description to the correct option.
Displacing moisture and diluting non-condensable gases corresponds to removing remaining moisture and unwanted gases.
This confirms that the term describes a purging or cleaning process rather than measuring or sealing.

Key Concept

Identifying domain-specific and technical vocabulary in instructional texts
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Topics

Domain-Specific and Technical Vocabulary

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