EPA 608 TYPE 2 TEST ACTUAL EXAM
Technicians maintaining, servicing, repairing or disposing of high pressure or very
high-pressure appliances, except small appliances and MVAC, must be certified
either as a Universal Technician or a ______ ___. - ANSWER: Type 2
After the installation of any type of system, the unit should be pressurized with
_____ and _____ checked. - ANSWER: nitrogen leak
Nitrogen is an ______ gas. - ANSWER: inert
In order to determine the general area of a leak, technicians should use a _____ or
_____ leak detector. - ANSWER: electronic ultrasonic
After locating the general area of a leak, ______ ______ are used to pinpoint it. -
ANSWER: soap bubbles
A refrigeration unit using an open compressor that has not been used in several
months is likely to leak from the rotating shaft ______. - ANSWER: seal
During a visual inspection of any type of system, _____ of _____ are an indicator of a
refrigerant leak. - ANSWER: traces oil
Excessive ________, caused by a low refrigerant charge, is an indication of a leak in a
high-pressure system. - ANSWER: superheat
A low ______ _______ may be the cause of excessive superheat in a high-pressure
system. - ANSWER: refrigerant charge
Epa regulations require that all comfort cooling appliances containing more than
_____ lbs. of refrigerant MUST be repaired when the annual leak rate exceeds _____
%. - ANSWER: 50 15
Epa regulations require that all commercial and industrial process refrigeration
systems containing more than _____ lbs. of refrigerant MUST be repaired when the
annual leak rate exceeds _____ %. - ANSWER: 50 35
Recovered refrigerants may contain _____, moisture, and oil. - ANSWER: acids
Recovered refrigerants may contain acids, ______, and oil. - ANSWER: moisture
Recovered refrigerants may contain acids, moisture, and ________. - ANSWER: oil
Because of the acids, moisture, and oil that may be in recovered refrigerants, it is
necessary to frequently check and change both the _____ and _____ on recycling
machines. - ANSWER: oil filter
, Recycling and Recovery machines using ______ compressors may overheat when
pulling a deep vacuum. - ANSWER: hermetic
Recycling and Recovery machines using hermetic compressors may overheat when
pulling a deep vacuum because the unit relies on the flow of ______ through the
compressor for ______. - ANSWER: refrigerant cooling
Before using a recovery unit, you should always check the _______ _______
_______, the oil level of the unit, and evacuate and recover any remaining
refrigerant in the unit's receiver. - ANSWER: service valve positions
Before using a recovery unit, you should always check the service valve positions, the
_____ _____ of the unit, and evacuate and recover an remaining refrigerant in the
unit's receiver. - ANSWER: oil level
Before using a recovery unit, you should always check the service valve positions, the
oil level of the unit and evacuate and recover an remaining refrigerant in the unit's
________. - ANSWER: receiver
Technicians working with multiple refrigerants, before recovering and/or recycling a
different refrigerant, must ______ the recover/recycle equipment by recovering as
much of the first refrigerant as possible, change the filter, and evacuate. Exception:
technicians working with R - 134 A. - ANSWER: purge
Technicians working with multiple refrigerants, before recovering and/or recycling a
different refrigerant, must purge the recover/recycle equipment by ______ as much
of the first refrigerant as possible, change the filter, and evacuate. Exception:
technicians working with R - 134 A. - ANSWER: recovering
Technicians working with multiple refrigerants, before recovering and/or recycling a
different refrigerant, must purge the recover/recycle equipment by recovering as
much of the first refrigerant as possible, change the ______, and evacuate.
Exception: technicians working with R - 134 A. - ANSWER: filter
Technicians working with multiple refrigerants, before recovering and/or recycling a
different refrigerant, must purge the recover/recycle equipment by recovering as
much of the first refrigerant as possible, change the filter, and ______. Exception:
technicians working with R - 134 A. - ANSWER: evacuate
Recovering refrigerant in the vapor phase will minimize the ______ of oil. - ANSWER:
loss
Recovering refrigerant in the ______ phase can ______ recovery time. - ANSWER:
liquid reduce
Technicians maintaining, servicing, repairing or disposing of high pressure or very
high-pressure appliances, except small appliances and MVAC, must be certified
either as a Universal Technician or a ______ ___. - ANSWER: Type 2
After the installation of any type of system, the unit should be pressurized with
_____ and _____ checked. - ANSWER: nitrogen leak
Nitrogen is an ______ gas. - ANSWER: inert
In order to determine the general area of a leak, technicians should use a _____ or
_____ leak detector. - ANSWER: electronic ultrasonic
After locating the general area of a leak, ______ ______ are used to pinpoint it. -
ANSWER: soap bubbles
A refrigeration unit using an open compressor that has not been used in several
months is likely to leak from the rotating shaft ______. - ANSWER: seal
During a visual inspection of any type of system, _____ of _____ are an indicator of a
refrigerant leak. - ANSWER: traces oil
Excessive ________, caused by a low refrigerant charge, is an indication of a leak in a
high-pressure system. - ANSWER: superheat
A low ______ _______ may be the cause of excessive superheat in a high-pressure
system. - ANSWER: refrigerant charge
Epa regulations require that all comfort cooling appliances containing more than
_____ lbs. of refrigerant MUST be repaired when the annual leak rate exceeds _____
%. - ANSWER: 50 15
Epa regulations require that all commercial and industrial process refrigeration
systems containing more than _____ lbs. of refrigerant MUST be repaired when the
annual leak rate exceeds _____ %. - ANSWER: 50 35
Recovered refrigerants may contain _____, moisture, and oil. - ANSWER: acids
Recovered refrigerants may contain acids, ______, and oil. - ANSWER: moisture
Recovered refrigerants may contain acids, moisture, and ________. - ANSWER: oil
Because of the acids, moisture, and oil that may be in recovered refrigerants, it is
necessary to frequently check and change both the _____ and _____ on recycling
machines. - ANSWER: oil filter
, Recycling and Recovery machines using ______ compressors may overheat when
pulling a deep vacuum. - ANSWER: hermetic
Recycling and Recovery machines using hermetic compressors may overheat when
pulling a deep vacuum because the unit relies on the flow of ______ through the
compressor for ______. - ANSWER: refrigerant cooling
Before using a recovery unit, you should always check the _______ _______
_______, the oil level of the unit, and evacuate and recover any remaining
refrigerant in the unit's receiver. - ANSWER: service valve positions
Before using a recovery unit, you should always check the service valve positions, the
_____ _____ of the unit, and evacuate and recover an remaining refrigerant in the
unit's receiver. - ANSWER: oil level
Before using a recovery unit, you should always check the service valve positions, the
oil level of the unit and evacuate and recover an remaining refrigerant in the unit's
________. - ANSWER: receiver
Technicians working with multiple refrigerants, before recovering and/or recycling a
different refrigerant, must ______ the recover/recycle equipment by recovering as
much of the first refrigerant as possible, change the filter, and evacuate. Exception:
technicians working with R - 134 A. - ANSWER: purge
Technicians working with multiple refrigerants, before recovering and/or recycling a
different refrigerant, must purge the recover/recycle equipment by ______ as much
of the first refrigerant as possible, change the filter, and evacuate. Exception:
technicians working with R - 134 A. - ANSWER: recovering
Technicians working with multiple refrigerants, before recovering and/or recycling a
different refrigerant, must purge the recover/recycle equipment by recovering as
much of the first refrigerant as possible, change the ______, and evacuate.
Exception: technicians working with R - 134 A. - ANSWER: filter
Technicians working with multiple refrigerants, before recovering and/or recycling a
different refrigerant, must purge the recover/recycle equipment by recovering as
much of the first refrigerant as possible, change the filter, and ______. Exception:
technicians working with R - 134 A. - ANSWER: evacuate
Recovering refrigerant in the vapor phase will minimize the ______ of oil. - ANSWER:
loss
Recovering refrigerant in the ______ phase can ______ recovery time. - ANSWER:
liquid reduce
