While recharging a commercial type refrigerator, with a hermetically sealed compressor with no pressure gauges, what could you use or do to achieve a proper full charge?

Correct Answer: Option B — Check nameplate for compressor's full load amperage and charge until that amperage is reached.

When recharging a hermetically sealed refrigeration system lacking pressure gauges, monitoring the compressor's full load amperage against the manufacturer's nameplate data ensures the unit is safely charged to proper operational capacity without overloading.