Self-contained recovery equipment

Self-contained recovery equipment is recovery machinery that has its own means of drawing refrigerant out of an appliance. It carries its own capability to pull and move the charge into a recovery container, and it therefore does not depend on anything the serviced appliance can contribute. Whether the appliance's compressor runs or not, whether the system holds pressure or not, a self-contained machine brings its own muscle to the job.

Its counterpart is system-dependent recovery equipment, which has no independent means of moving refrigerant and instead relies on the appliance's own components, chiefly its compressor, or on the pressure the system itself provides. The distinction is the tested concept: one category works alone, the other borrows the appliance's help, and what a given device can honestly accomplish follows directly from which category it belongs to. A system-dependent device facing a dead, pressureless appliance has nothing to work with.

The distinction connects to the rest of the recovery framework in a satisfying way. Recovery standards acknowledge that a dead compressor makes complete capture harder, and the equipment categories acknowledge that some devices depend on that compressor entirely. Exam questions built on this term nearly always reduce to matching the definition: independent means of removal points to self-contained, reliance on the appliance points to system-dependent.

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