Core
What is used to pressure check or weak test a system?
What is nitrogen
a mixture of two or more compounds (refrigerants) where the mixture behaves like a single chemical (new Refrigerant)?
What is an Azeotrope Refrigerant?
The receiver is installed on this side of the system
What is the high side
Type 3 systems work under?
What is Low pressure or Vacuum
What is the treaty signed on September 16,1987?
What is the Montreal Protocal
What is the approved drop in replacement for R22?
What is there is no approved drop in replacement for R22
What 3 things make a type 1 appliance?
What are Contains less than 5 lbs. of refrigerant, hermetically sealed, Contains no service valves.
What is the most common method for recovery?
What is vapor recovery
ASHRAE Standards 15-2013 requires the use of room sensors and alrams to detect this hazard?
What is Refrigerant Leaks
All HCFC refrigerants will be phased out by what year?
What is 2030
Can you over dehydrate a system?
What is no
When brazing a used system, the nasty smell, toxic green flame is?
What is Phosgene gas
After a push pull method recovery is performed what must be performed next?
What is vapor recovery
A Technician evacuating refrigerant from appliances with a full charge of more than 5 lbs. and less than 50 lbs. that are being disposed. This is the length of time to keep the records of the event.
What is 3 years
R-22 Refrigerant will no longer be produced after what date?
What is December 31,2019
When entering an area of a large refrigerant leak, you must use a?
What is a Self-contained Breathing Apparatus (SCBA)
True or False, MVAC Falls under Small Appliance Type 1 Systems?
What is false
What is the state of refrigerant leaving the condesner?
What is High Pressure Liquid?
The ability of any chemical to deplete the ozone layer?
What is Ozone Depletion Potential
Refrigerant recovery Devices manufactured after this date must be certified and meet EPA standards.
What is November 15, 1993
What is a pressure-verses-Temperature curve?
What is "Temperature Glide"
What kind of Refrigerant is R-22
What are HCFC's
What is piped into the system to check the state of the refirgerant and check moisture content in system?
What is a sight glass
Starting in 2019, EPA regulations require that all chillers containing 50 or more lbs. of ozone depleting refrigerant that are used for comfort cooling be repaired when the leak rate exceeds?
What is 10 % of the charger per year?
A sibgle chlrone molecue can last how long?
What is 120 Years