EPA 608 (TYPE II) Exam Questions And Answers With Verified Updates
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Grado
EPA 608
Institución
EPA 608
The EPA regulations require that leaking commercial or industrial process refrigeration equipment must
be repaired when the leak rate exceeds _____ of the charge per year. - 35%
The proper charging method for blended (non-azeotropic) refrigerants (400 Series) is to use a remove
the charge from t...
EPA 608 (TYPE II) Exam
The EPA regulations require that leaking commercial or industrial process refrigeration equipment must
be repaired when the leak rate exceeds _____ of the charge per year. - 35%
The proper charging method for blended (non-azeotropic) refrigerants (400 Series) is to use a remove
the charge from the cylinder as a? - Liquid
Your recovery/recycling machine has R-502 refrigerant in it. You now have to recover refrigerant from a
unit with R-22. What must be done before the R-22 refrigerant can be recovered/recycled? -
Recover as much R-502 from the recovery unit as possible, change filter, & evacuate.
.
The EPA regulations require that any appliances containing more than 50 pounds of refrigerant (except
for commercial & industrial process refrigeration) must be repaired when the leak rate exceeds
_________ of the charge per year? - 15%
R-410A requires recovery tanks rated for at least? - 400 psig
After refrigerant liquid has been recovered from a system, any remaining vapor is? - Condensed by
the recovery system.
In a refrigeration system with a TXV (or other type of throttling device), the component directly following
the condenser is the? - Receiver
When a new system has been assembled, the first thing to do is? - Pressurize the system with an
inert gas & leak check
When charging an R-410A system that uses a water-cooled condenser, you must first charge with vapor
to a pressure of at least________, before switching to liquid charging. - 120 psig
Recovered refrigerant may contain what? - 1.) Acids
2.) Moisture
, 3.) Oils
Your recovery/recycling machine has R-22 refrigerant in it. You now have to recover refrigerant from a
unit with R-410A. What must be done before your recovery unit can be used to recover R-410A? -
1.) The recovery unit must be EPA certified for use with R-410A.
2.) The recovery tank must be designed for the pressure of R-410A.
3.) The filter & lubricant in the recovery unit must be changed, & the recovery unit evacuated.
To recover liquid refrigerant, you must connect one hose to the? - Liquid Line.
Before using a recovery unit to remove a charge, what steps should be taken? - 1.) Check service
valve positions.
2.) Check the oil level in the recovery unit.
3.) Evacuate recovery unit & recovery tank.
On refrigeration units that use an open compressor; the ________ is most likely to leak if the unit is not
used for several months. - The rotating shaft seal.
Noncondensables in a system cause? - Higher discharge pressure.
Heat Pumps that use R-410A should be leak checked with? - Pressurized Nitrogen.
A reciprocating compressor should not be energized when? - The discharge service valve is closed.
In a refrigeration system, the component directly following the evaporator is the? - Accumulator.
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