EPA 608 Type 3 Exam Questions And Answers

EPA 608 Type 3 Exam Questions And Answers On low pressure chillers, moisture typically enters the refrigerant system through - ANS air leaks from areas with gaskets or fittings The maximum test pressure for leak testing a low pressure centrifugal is: - ANS 10 psig Leak test and repair the chiller to reduce refrigerant loss from a purge unit on CFC-11 chiller - ANS ... A hydrostatic tube test kit is used to: - ANS determine if a tube leaks Commercial and industrial process refrigeration systems must be repaired when the leak rate exceeds ____ of the charge per year. - ANS 35% Refrigerant recovery typically start with liquid recovery. It is faster. - ANS ... A rupture disc on a recovery vessel for a low pressure refrigerants relieves at: - ANS 15 psig According to ASHRAE Guideline 3-1996, if the pressure in a system rises from 1 mm Hg to a level above ____ during a standing vacuum test, the system should be checked for leaks. - ANS 2.5 mm Hg The primary water source for a recovery unit condensing coil is _____. - ANS local municipal water supply When recharging a refrigeration system with R-11, what vaporpressure is necessary in the shells before changing with liquid? - ANS 16.9" Hg vacuum After recovering the liquid refrigerant you must: - ANS recover the vapor refrigerant According to the EPA there is approximately _____ refrigerant vapor left in an average 350 ton R-11 chiller at 0 psig pressure