EPA 608 Type 3 2026/2027 COMPLETE
QUESTIONS WITH CORRECT DETAILED
ANSWERS || GUARANTEED PASS
1. On low pressure chillers, moisture typically enters the refrigerant system
through - ANSWER ✅ air leaks from areas with gaskets or fittings
2. The maximum test pressure for leak testing a low pressure centrifugal is: -
ANSWER ✅ 10 psig
3. System- dependent recovery equipment CANNOT be used when: -
ANSWER ✅ the appliance contains over 15 pounds of refrigerant
4. Moisture is removed a system by: - ANSWER ✅ using a filter drier
5. When a unit is opened for servicing the ______ should always be replaced -
ANSWER ✅ filter drier
6. The backseating of a suction shutoff valvee will close the: - ANSWER ✅
guage port
7. When charging an R-12 refrigeration system that uses a water cooled
condensor, you must first charge with vapor to a pressure of at least _____ ,
before switching to a liquid charging. - ANSWER ✅ 35 psig
,8. A compressor heater is used to: - ANSWER ✅ reduce the amount of
refrigerant in the lubricating oil
9. While R-410A is a high pressure refrigerant, it can be stored in the back of
your service van as long as: - ANSWER ✅ the temperature inside the
vehicle does not exceed 125 degrees F. This is the same guidance given for
R-22 and other common refrigerants.
10.For what refrigerant is an equipment room refrigerant monitor required
under ASHRAE standard 15? - ANSWER ✅ R-123
11.A reciprocating compressor should not be energized if the - ANSWER ✅
discharge service valve has closed
12.What factor affects the speed of evacuation? - ANSWER ✅ the size of the
equipment
the ambient temperature
the amount of moisture in the system
13.The evacuation of a system is a method of: - ANSWER ✅ dehydration
14.When moisrture exists in an operating system which is likely to occur? -
ANSWER ✅ Acid will form
15.The over-evacuation of a system: - ANSWER ✅ does not occur
16.A system is considered dehydrated when: - ANSWER ✅ the vacuum
indicator shows you have reached & held the required finished vacuum
, 17.When evacuating a system the hoses should be: - ANSWER ✅ equal to or
larger than the vacuum pump inlet connection
18.When evacuating a system the hoses should be: - ANSWER ✅ short in
length & as large in diameter as possible
19.When operating refrigerant recovery or recycling equipment the following
precautions should be taken - ANSWER ✅ safety glasses & gloves along
with following equipment safety precautions
20.The color code for refrigerant recovery cylinders is - ANSWER ✅ yellow
tops with grey bodies
21.Never use oxygen or compressed air to pressurize a sytem because: -
ANSWER ✅ when mixed with compresser oil or some refrigerants it could
explode
22.When using any solvent, chemical, cleaner, chemical or refrigerant you
should review - ANSWER ✅ MSDS (data sheets)
23.Refrigerant vapors or mist should not be inhaled because - ANSWER ✅
they may cause heart irregularities & or unconsciousness
24.When using recovery unit the fill level of the recovery tank can be controlled
by - ANSWER ✅ mechanical float switch
electronic shutt-off device
weight
QUESTIONS WITH CORRECT DETAILED
ANSWERS || GUARANTEED PASS
1. On low pressure chillers, moisture typically enters the refrigerant system
through - ANSWER ✅ air leaks from areas with gaskets or fittings
2. The maximum test pressure for leak testing a low pressure centrifugal is: -
ANSWER ✅ 10 psig
3. System- dependent recovery equipment CANNOT be used when: -
ANSWER ✅ the appliance contains over 15 pounds of refrigerant
4. Moisture is removed a system by: - ANSWER ✅ using a filter drier
5. When a unit is opened for servicing the ______ should always be replaced -
ANSWER ✅ filter drier
6. The backseating of a suction shutoff valvee will close the: - ANSWER ✅
guage port
7. When charging an R-12 refrigeration system that uses a water cooled
condensor, you must first charge with vapor to a pressure of at least _____ ,
before switching to a liquid charging. - ANSWER ✅ 35 psig
,8. A compressor heater is used to: - ANSWER ✅ reduce the amount of
refrigerant in the lubricating oil
9. While R-410A is a high pressure refrigerant, it can be stored in the back of
your service van as long as: - ANSWER ✅ the temperature inside the
vehicle does not exceed 125 degrees F. This is the same guidance given for
R-22 and other common refrigerants.
10.For what refrigerant is an equipment room refrigerant monitor required
under ASHRAE standard 15? - ANSWER ✅ R-123
11.A reciprocating compressor should not be energized if the - ANSWER ✅
discharge service valve has closed
12.What factor affects the speed of evacuation? - ANSWER ✅ the size of the
equipment
the ambient temperature
the amount of moisture in the system
13.The evacuation of a system is a method of: - ANSWER ✅ dehydration
14.When moisrture exists in an operating system which is likely to occur? -
ANSWER ✅ Acid will form
15.The over-evacuation of a system: - ANSWER ✅ does not occur
16.A system is considered dehydrated when: - ANSWER ✅ the vacuum
indicator shows you have reached & held the required finished vacuum
, 17.When evacuating a system the hoses should be: - ANSWER ✅ equal to or
larger than the vacuum pump inlet connection
18.When evacuating a system the hoses should be: - ANSWER ✅ short in
length & as large in diameter as possible
19.When operating refrigerant recovery or recycling equipment the following
precautions should be taken - ANSWER ✅ safety glasses & gloves along
with following equipment safety precautions
20.The color code for refrigerant recovery cylinders is - ANSWER ✅ yellow
tops with grey bodies
21.Never use oxygen or compressed air to pressurize a sytem because: -
ANSWER ✅ when mixed with compresser oil or some refrigerants it could
explode
22.When using any solvent, chemical, cleaner, chemical or refrigerant you
should review - ANSWER ✅ MSDS (data sheets)
23.Refrigerant vapors or mist should not be inhaled because - ANSWER ✅
they may cause heart irregularities & or unconsciousness
24.When using recovery unit the fill level of the recovery tank can be controlled
by - ANSWER ✅ mechanical float switch
electronic shutt-off device
weight
