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EPA Type 2 Questions and Answers Already Graded A
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Heat pumps that have been retrofitted from R22 to R407C should be leak checked with: pressurized nitrogen When a new system has been assembled, the first thing to do is: pressurize the system with inert gas and leak check EPA regulations require that leaking commercial or industrial process refrigeration equipment must be repaired when the leak rate exceeds______ of the charge per year. 35% Prior to replacing the condenser coil in a high pressure system, the refrigerant was recovered and stored in a refillable container. The refrigerant: can probably be charged back into the system R-410A requires recovery tanks rated for at least: 400 psig
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EPA Type 2
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