EPA 608 Practice exam Type 3 2023 with 100% correct answers

The maximum test pressure for leak testing a low-pressure centrifugal chiller is 10 psig Excessive operation of a purge system means The system has a leak on the sub-ambient pressure side of the system For a commercial refrigeration system with a charge of 50 pounds or more refrigerant, a substantial (or threshold) week rate will be reduced to ________ after January 1, 2019. 20% For a comfort cooling system with a charge of 50 pounds or more of refrigerant, a substantial (or threshold) Leak rate will be reduced to _________ after January 1, 2019. 10% According to the EPA, when all the R-123 liquid has been removed from an average 350 ton R-123 chiller and the system vapor pressure is 0 psig, the system contains 100 pounds of refrigerant in the system When working with low pressure systems, the high-pressure cut off should be set to no more than _________ to avoid damaging the system or activating the pressure blow off device (rupture disk). 10 psig The rupture discs on the low pressure chiller and on the recovery tank should relieve at __________ to prevent damage to the system during refrigerant transfer into or out of the system. 15 psig If possible, the temperature of the equipment room where the chiller is located Should be increased to speed recovery When possible, oil in the chiller should be heated because Less refrigerant will be soluble and/or trapped in the oil at higher temperatures