HOSMERIT
EPA SECTION 608 TYPE II EXAM QUESTIONS AND
100% CORRECT ANSWERS GRADED A+
When should refrigerant be removed from the condenser outlet?
a. When the condenser is below the receiver.
b. When the condenser is on the roof.
c. When the compressor is inoperative.
d. When the evaporator has a small leak. - ANSWER: A
When first inspecting a hermetic system known to be leaking, you should lookfor;
a. frost on the tubing
b. puddles of refrigerant.
c. particles of filter drier core.
d. traces of oil. - ANSWER: D
An operating unit that has a receiver/storage tank requires refrigerant systemservice. When
servicing the unit;
a. the compressor should be valved off.
b. liquid refrigerant should be recovered last.
c. refrigerant should be pumped down and isolated in the receiver.
d. a gauge pressure of "0" psi should be achieved by venting. - ANSWER: C
How long must a HVAC servicing company keep records for each disposedappliance with a
charge between 5 and 50 pounds?
a. 1 year
,b. 3 years
c. 5 years
d. 10 years - ANSWER: B
Before making a major repair, technicians must evacuate an appliance or component containing
more than 200 pounds of R-410A to which of thefollowing levels?
a. 0 psig
b. 25 mm HG absolute
c. 10 inches of Hg vacuum
d. 15 inches of Hg vacuum - ANSWER: C
What is the component directly following the condenser in a refrigeration systemusing a TEV?
a. Receiver
b. Compressor
c. Accumulator
d. Evaporator - ANSWER: A
What can happen when using a large vacuum pump to evacuate a system?
a. Trapped oil can freeze.
b. Trapped refrigerant can freeze.
c. Water in the system can freeze.
d. The valve seats can freeze. - ANSWER: C
, Liquid charging of an R-410A refrigeration system with risk of freezing is begunwith vapor from
a vacuum level to a pressure of approximately;
a. 32 psig
b. 63 psig
c. 90 psig
d. 110 psig - ANSWER: D
For what refrigerant is an equipment room refrigerant detector NOT required under ASHRAE
Standard 15 provided the mechanical ventilation system in themachinery is run continuously?
a. R-134a
b. R-404A
c. R-410A
d. R-717 - ANSWER: D
It is best practice to use dry nitrogen to break the vacuum when dehydrating bythe triple
evacuation method. However, it;
a. often contains moisture.
b. requires a minimum of 10 psig
c. is toxic when released into the atmosphere
d. requires a pressure regulator - ANSWER: D
When could a reciprocating compressor be damaged if energized?
a. When the discharge service valve is closed.
b. When the suction service valve is closed.
c. When the discharge service valve is open.
d. When the demand for cooling is at a steady state. - ANSWER: A
How would you remove the moisture from refrigerant in a system?
EPA SECTION 608 TYPE II EXAM QUESTIONS AND
100% CORRECT ANSWERS GRADED A+
When should refrigerant be removed from the condenser outlet?
a. When the condenser is below the receiver.
b. When the condenser is on the roof.
c. When the compressor is inoperative.
d. When the evaporator has a small leak. - ANSWER: A
When first inspecting a hermetic system known to be leaking, you should lookfor;
a. frost on the tubing
b. puddles of refrigerant.
c. particles of filter drier core.
d. traces of oil. - ANSWER: D
An operating unit that has a receiver/storage tank requires refrigerant systemservice. When
servicing the unit;
a. the compressor should be valved off.
b. liquid refrigerant should be recovered last.
c. refrigerant should be pumped down and isolated in the receiver.
d. a gauge pressure of "0" psi should be achieved by venting. - ANSWER: C
How long must a HVAC servicing company keep records for each disposedappliance with a
charge between 5 and 50 pounds?
a. 1 year
,b. 3 years
c. 5 years
d. 10 years - ANSWER: B
Before making a major repair, technicians must evacuate an appliance or component containing
more than 200 pounds of R-410A to which of thefollowing levels?
a. 0 psig
b. 25 mm HG absolute
c. 10 inches of Hg vacuum
d. 15 inches of Hg vacuum - ANSWER: C
What is the component directly following the condenser in a refrigeration systemusing a TEV?
a. Receiver
b. Compressor
c. Accumulator
d. Evaporator - ANSWER: A
What can happen when using a large vacuum pump to evacuate a system?
a. Trapped oil can freeze.
b. Trapped refrigerant can freeze.
c. Water in the system can freeze.
d. The valve seats can freeze. - ANSWER: C
, Liquid charging of an R-410A refrigeration system with risk of freezing is begunwith vapor from
a vacuum level to a pressure of approximately;
a. 32 psig
b. 63 psig
c. 90 psig
d. 110 psig - ANSWER: D
For what refrigerant is an equipment room refrigerant detector NOT required under ASHRAE
Standard 15 provided the mechanical ventilation system in themachinery is run continuously?
a. R-134a
b. R-404A
c. R-410A
d. R-717 - ANSWER: D
It is best practice to use dry nitrogen to break the vacuum when dehydrating bythe triple
evacuation method. However, it;
a. often contains moisture.
b. requires a minimum of 10 psig
c. is toxic when released into the atmosphere
d. requires a pressure regulator - ANSWER: D
When could a reciprocating compressor be damaged if energized?
a. When the discharge service valve is closed.
b. When the suction service valve is closed.
c. When the discharge service valve is open.
d. When the demand for cooling is at a steady state. - ANSWER: A
How would you remove the moisture from refrigerant in a system?
