Question 7Refrigeration & AC - QMED

The correct answer is C) Close the king valve, pump down the system, isolate the drier, remove the desiccant core and replace with new drier cartridge. This is the most practical procedure to follow when the moisture indicator and sight glass show an accumulation of moisture in the system. The presence of moisture indicates a problem with the desiccant in the drier, which needs to be addressed. Closing the king valve and pumping down the system allows the technician to isolate the drier and replace the desiccant core, which will remove the moisture from the system. The other options are less practical - option A requires more extensive disassembly, option B is an overly complex procedure for this issue, and option D would result in the entire system being purged and recharged, which is unnecessary if the moisture can be addressed by replacing the drier cartridge.