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- Study guides, Class notes & Summaries
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When using recovery or recycling equipment manufactured or imported on or after Nov 15, 1993, the required level of evacuation for low pressure equipment is _____ Hg absolute:
30mm
25mm
15mm
20mm - ANSWER 25mm
The EPA requires that all commercial and industrial process refrigeration systems with more than 50lb of refrigerant be repaired when the annual leak rate exceeds ______:
35%
15%
30%
25% - ANSWER 35%
Open-drive compressors are typically _____ compressors
centrifugal
r...
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