EPA Type 2 questions with correct answers

Heat pumps that have been retrofitted from R22 to R407C should be leak checked with: ans pressurized nitrogen When a new system has been assembled, the first thing to do is: ans 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. ans 35% Prior to replacing the condenser coil in a high pressure system, the refrigerant was recovered and stored in a refillable container. The refrigerant: ans can probably be charged back into the system R-410A requires recovery tanks rated for at least: ans 400 psig to recover liquid refrigerant you must connect one hose to the ans liquid line The primary water source for cooling the condenser of a water-cooled recovery unit is: ans local municipal water supply After refrigerant liquid has been recovered from a system, any remaining vapor is: ans condensed by the recovery system