Epa 608 Type 3 Exam Questions & Answers
Updated Solution
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
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%
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 vapor pressure 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
Updated Solution
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
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%
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 vapor pressure 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
