EPA 608 Type II Exam 2025
Questions and Answers 100% Pass
Solution
With an air-cooled condenser on the roof of a building and the evaporator
on the first floor, recovery should first occur: ___________.
a) from the vapor line entering the condenser
b) from the discharge of the compressor
c) from the liquid line entering the evaporator
d) on the suction side of the compressor - ANSWER>>c) from the liquid
line entering the evaporator
R-410A is different from other ASHRAE 400 series non-azeotropic blends
because: _______.
a) R-410A behaves as a near azeotropic refrigerant, and can be topped off
b) R-410A is a HCFC
c) R-410A uses mineral oil
d) all of the above - ANSWER>>a) R-410A behaves as a near azeotropic
refrigerant, and can be topped off
The fastest way to recover refrigerant from a system is to remove it in the
_______ phase?
a) final
b) initial
c) liquid
,d) vapor - ANSWER>>c) liquid
A Recovery machine that uses a hermetic compressor will overheat when
drawing a deep vacuum because: ___________.
a) it runs faster than other equipment
b) the motor needs the flow of refrigerant through the compressor to
provide motor cooling
c) the oils used in hermetic compressors burn at lower temperatures
d) it has a higher compression ratio limit than other equipment -
ANSWER>>b) the motor needs the flow of refrigerant through the
compressor to provide motor cooling
When a unit is opened for servicing, the _______ should always be
replaced.
a) thermostat
b) metering device
c) crankcase heater
d) filter-drier - ANSWER>>d) filter-drier
The method to charge a system that has a normal charge of 80 pounds is
to charge with: ________.
a) vapor through the suction line service valve
b) liquid through the discharge service valve
c) liquid through the suction service valve
d) liquid through the liquid-line service valve - ANSWER>>d) liquid through
, the liquid-line service valve
The EPA regulations require that any appliances containing more than 50
pounds of refrigerant (except for commercial and industrial process
refrigeration) must be repaired when the leak rate exceeds ______ of the
charge per year.
a) 5%
b) 15%
c) 25%
d) 35% - ANSWER>>b) 15%
The evaporation temperature of R-410A at 100 psig is about: ______.
a) 0 degrees F
b) 30 degrees F
c) 90 degrees F
d) 120 degrees F - ANSWER>>b) 30 degrees F
The primary water source for cooling the condenser of a water-cooled
recovery unit is: _________.
a) de-ionized water
b) chilled water
c) condenser water
d) local municipal water supply - ANSWER>>d) local municipal water
supply
Questions and Answers 100% Pass
Solution
With an air-cooled condenser on the roof of a building and the evaporator
on the first floor, recovery should first occur: ___________.
a) from the vapor line entering the condenser
b) from the discharge of the compressor
c) from the liquid line entering the evaporator
d) on the suction side of the compressor - ANSWER>>c) from the liquid
line entering the evaporator
R-410A is different from other ASHRAE 400 series non-azeotropic blends
because: _______.
a) R-410A behaves as a near azeotropic refrigerant, and can be topped off
b) R-410A is a HCFC
c) R-410A uses mineral oil
d) all of the above - ANSWER>>a) R-410A behaves as a near azeotropic
refrigerant, and can be topped off
The fastest way to recover refrigerant from a system is to remove it in the
_______ phase?
a) final
b) initial
c) liquid
,d) vapor - ANSWER>>c) liquid
A Recovery machine that uses a hermetic compressor will overheat when
drawing a deep vacuum because: ___________.
a) it runs faster than other equipment
b) the motor needs the flow of refrigerant through the compressor to
provide motor cooling
c) the oils used in hermetic compressors burn at lower temperatures
d) it has a higher compression ratio limit than other equipment -
ANSWER>>b) the motor needs the flow of refrigerant through the
compressor to provide motor cooling
When a unit is opened for servicing, the _______ should always be
replaced.
a) thermostat
b) metering device
c) crankcase heater
d) filter-drier - ANSWER>>d) filter-drier
The method to charge a system that has a normal charge of 80 pounds is
to charge with: ________.
a) vapor through the suction line service valve
b) liquid through the discharge service valve
c) liquid through the suction service valve
d) liquid through the liquid-line service valve - ANSWER>>d) liquid through
, the liquid-line service valve
The EPA regulations require that any appliances containing more than 50
pounds of refrigerant (except for commercial and industrial process
refrigeration) must be repaired when the leak rate exceeds ______ of the
charge per year.
a) 5%
b) 15%
c) 25%
d) 35% - ANSWER>>b) 15%
The evaporation temperature of R-410A at 100 psig is about: ______.
a) 0 degrees F
b) 30 degrees F
c) 90 degrees F
d) 120 degrees F - ANSWER>>b) 30 degrees F
The primary water source for cooling the condenser of a water-cooled
recovery unit is: _________.
a) de-ionized water
b) chilled water
c) condenser water
d) local municipal water supply - ANSWER>>d) local municipal water
supply
