EPA 608 Type II Exam Questions and Correct Answers Latest Update 2024 Already Passed
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Course
EPA 608 Type II
Institution
EPA 608 Type II
EPA 608 Type II Exam Questions and Correct Answers Latest Update 2024 Already Passed
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 t...
EPA 608 Type II Exam Questions and Correct Answers Latest Update 2024 Already Passed
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 - Answers 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 - Answers 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 - Answers 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 - Answers 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 - Answers 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 - Answers 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% - Answers 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 - Answers 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 - Answers d) local municipal water supply
When a new system has been assembled, the first thing to do is: _________.
a) evacuate the system
b) pressurize the system with an inert gas and leak check
c) pressurize the system with refrigerant to be used in the system
d) introduce an initial charge of refrigerant and start the compressor - Answers b) pressurize the system
with an inert gas and leak check
The vacuum pump used to evacuate a system should be capable of pulling a vacuum of: ________.
a) 10 mm Hg
b) 20 mm Hg
c) 500 microns
d) 1000 microns - Answers c) 500 microns
Dry nitrogen should be used to break the first vacuum when dehydrating by the double evacuation
method. However, it: ________.
a) often contains moisture
b) is expensive
c) is toxic
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