#Latest EPA 608 Type 3 Practice Exam |Graded A+| 100% Correct

#Latest EPA 608 Type 3 Practice Exam |Graded A+| 100% Correct 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 pruge 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 once all the R-11 liquid has been removed. *Ans* 100 pounds Charging refrigerant liquid into a refrigeration system when it is under a 29 inch Hg vacuum can cause the: *Ans* system water to freeze A system does not have to be evacuated all the way to the required level when: *Ans* leaks in the appliance make evacuation to the prescribed level unattainabl