ESCO Exam Questions and Answers With Verified Solutions 2025
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
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
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
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
