ESCO Exam Questions and Answers
100% Pass
When recovering refrigerant from a medium-pressure system with more than 200 lbs.
of refrigerant, recover to a level of; - ✔✔15" Hg
Refrigerant should be recovered from the condenser outlet if the condenser is; -
✔✔Below the receiver
A new split system should be checked for leaks by; - ✔✔pressurizing the system with a
few ounces of system refrigerant and an inert gas.
Leaks must be repaired on industrial process and refrigeration units with a 50-pound
charge or greater when the annualized leak rate reaches _____ or more. - ✔✔30%
Refrigerants CFC-12, HCFC-22, and HFC-134a are all classified as Type _______
substances. - ✔✔A1
A high-pressure appliance containing less than 200 lbs. of an HCFC or HFC refrigerant
must be evacuated (recovered) to a level of; - ✔✔0 inches of vacuum
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, When using a recovery unit on a system containing 100 lbs. of R-410A it must be
evacuated to; - ✔✔0 inches of Mercury
A refrigerant sensor which will sound an alarm and automatically start a ventilation
system in occupied equipment rooms falls under ASHRAE Standard; - ✔✔15
When an appliance containing 50 pounds or more of a regulated refrigerant leaks
refrigerant at an annual rate of 125% or more, what must be included on the leak
inspections records? - ✔✔Initial verification, verification tests and records of recovered
refrigerant from equipment.
Unless plans are made to replace a system with a leak rate that exceeds the maximum
leak rate, repairs must be made within; - ✔✔30 days
If a leaking appliance with a regulated refrigerant is not going to be repaired, it must be;
- ✔✔retrofitted or retired within 12 months.
A high-pressure appliance containing less than 200 lbs. of an HCFC or HFC refrigerant
must be evacuated (recovered) to a level of; - ✔✔0 inches of vacuum
A high-pressure appliance containing 210 lbs. of R-407C refrigerant must be evacuated
(recovered) to a level of; - ✔✔10 inches of vacuum
Which of the following refrigerants is classified as a very high-pressure refrigerant? -
✔✔R-744
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100% Pass
When recovering refrigerant from a medium-pressure system with more than 200 lbs.
of refrigerant, recover to a level of; - ✔✔15" Hg
Refrigerant should be recovered from the condenser outlet if the condenser is; -
✔✔Below the receiver
A new split system should be checked for leaks by; - ✔✔pressurizing the system with a
few ounces of system refrigerant and an inert gas.
Leaks must be repaired on industrial process and refrigeration units with a 50-pound
charge or greater when the annualized leak rate reaches _____ or more. - ✔✔30%
Refrigerants CFC-12, HCFC-22, and HFC-134a are all classified as Type _______
substances. - ✔✔A1
A high-pressure appliance containing less than 200 lbs. of an HCFC or HFC refrigerant
must be evacuated (recovered) to a level of; - ✔✔0 inches of vacuum
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, When using a recovery unit on a system containing 100 lbs. of R-410A it must be
evacuated to; - ✔✔0 inches of Mercury
A refrigerant sensor which will sound an alarm and automatically start a ventilation
system in occupied equipment rooms falls under ASHRAE Standard; - ✔✔15
When an appliance containing 50 pounds or more of a regulated refrigerant leaks
refrigerant at an annual rate of 125% or more, what must be included on the leak
inspections records? - ✔✔Initial verification, verification tests and records of recovered
refrigerant from equipment.
Unless plans are made to replace a system with a leak rate that exceeds the maximum
leak rate, repairs must be made within; - ✔✔30 days
If a leaking appliance with a regulated refrigerant is not going to be repaired, it must be;
- ✔✔retrofitted or retired within 12 months.
A high-pressure appliance containing less than 200 lbs. of an HCFC or HFC refrigerant
must be evacuated (recovered) to a level of; - ✔✔0 inches of vacuum
A high-pressure appliance containing 210 lbs. of R-407C refrigerant must be evacuated
(recovered) to a level of; - ✔✔10 inches of vacuum
Which of the following refrigerants is classified as a very high-pressure refrigerant? -
✔✔R-744
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