What are the characteristics of hydrofluoroolefins (HFOs)?
which condition requires accessing both the high and low sid…
which condition requires accessing both the high and low side of the system for refrigerant recovery when using the system-dependent (passive) recovery process?
Identify the pressure corresponding to 32 F for R-123
Identify the pressure corresponding to 32 F for R-123
Refrigerant has been recovered from an air-conditioning syst…
Refrigerant has been recovered from an air-conditioning system and held in a refillable cylinder, in order to replace the condenser coil. The refrigerant;
A company uses a chiller that diverts 55% of its cooling cap…
A company uses a chiller that diverts 55% of its cooling capacity to one of its manufacturing lines and 45% of it’s cooling capacity to air condition the office spaces. Which leak rate category would this chiller be in?
what will back-seating a suction shutoff valve close?
what will back-seating a suction shutoff valve close?
To determine if the system is leaking more than the allowabl…
To determine if the system is leaking more than the allowable rate, the EPA allows the use of which one of the following methods to determine the full charge?
Which of the following always falls under the EPA definition…
Which of the following always falls under the EPA definition for “major maintenance, service, or repair?”
Which of the following actions would always be considered “m…
Which of the following actions would always be considered “major” under EPA’s regulations?
which of the following is a true statement regarding a refri…
which of the following is a true statement regarding a refrigerant that can be used as a direct service ‘drop-in’ substitute for R-22