Recovery & Recycling第 212 / 240 题
Before recovering refrigerant from an unfamiliar system, a technician should first:
a.Add nitrogen to the system
b.Top off the recovery cylinder
c.Open the compressor for inspection
d.Use a refrigerant identifier to confirm what refrigerant is present
解析
Identifying the refrigerant with a refrigerant identifier before recovery prevents pulling an unknown or contaminated charge into clean equipment or a partly filled cylinder. Mixing refrigerants can ruin a whole cylinder and the recovery machine. Identification protects both the equipment and the value of the recovered refrigerant.
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同考点相关题目
- A recovery cylinder is identified by which color scheme?
- A recovery cylinder should never be filled beyond what percentage of its capacity by weight?
- The main danger of overfilling a recovery cylinder beyond 80 percent is that:
- Mixing two different refrigerants in one recovery cylinder is a serious problem because the mixture:
- Recycling refrigerant, as opposed to reclaiming it, means the refrigerant is:
- Under EPA rules, refrigerant that changes ownership generally must be before it is resold: