What is the purpose of running a refrigeration compressor in short intermittent spurts or throttling the suction isolation valve when starting the system after a prolonged shutdown?

Correct Answer: Option B — prevent liquid slugging or overloading the compressor

Extended shutdowns cause refrigerant to migrate into the compressor crankcase and mix with lubricating oil. Starting abruptly causes violent boiling, foaming, and liquid slugging. Throttling the suction valve or bumping the compressor controls boiling and protects internal components.