High Pressure
Which of the following always Falls under the EPA definition for "Major Maintenance, Service or Repair"
What is a compressor?
Which of the following should be replaced if a system is opened for servicing?
Filter-Dryer
Thermostat
Metering Device
Crankcase Heater
Filter Dryer
A comfort cooling appliance containing 50 pounds or more of R22 is found to be leaking beyond the applicable rate threshold unless granted additional time. How many days do you have to repair the leak and conduct the initial leak verification test?
What is 30 days?
After system servicing and recharging, why is refrigerant vapor reintroduced to the chiller before refrigerant liquid?
What is, liquid charged into a deep vacuum may cause temperature drop, freezing the water in the heat exchanger?
In the event of a large release of CFC, HCFC or HFC refrigerant in a contained area, which of the following is true?
Safety glasses and lined butyl gloves are sufficient.
SCBA are required in this area.
Respiratory protection is not required.
Dust masks are sufficient.
SCBA
Recovering refrigerant from a system in the vapor phase will minimize the loss of what
What is oil?
Recovered refrigerant may contain which of the following impurities?
Acids, Moisture, and oil.
What must a system owner do once the threshold leak rate has been exceeded on any low-pressure system using an ozone depleting refrigerant?
Repair the appliance enough to bring the leak rate below the threshold, Retrofit or Retire the appliance.
Where should the discharge from a ruptured disk be piped for venting?
What is outside?
What can be done with the refrigerant trace gas and nitrogen mixture after a system leak is found?
What is can be vented?
When inspecting a system for leaks, you should look for?
What are traces of oil?
Pressure Relief valves must not be:
installed in series
installed in parallel
installed vertically
installed horizontal
What is installed in series?
A customer has an Industrial Process Refrigeration system that contains 1,000 pounds of R-22 that has exceeded the acceptable leak rate threshold. How often is the customer required to perform a leak inspection?
Every month
Every 3 months
Every 6 months
Every Year
What is every 3 months?
EPA regulations require that all industrial process refrigeration systems containing more than 50 pounds of refrigerant must be repaired when the annual leak rate exceeds.
What is 30 %
R-410 A is not a typical blended refrigerant because....
it is near azeotropic refrigerant.
it can be charged as either a liquid or vapor.
While is has a 400 series refrigerant number but behaves like a 500 series refrigerant.
All of the above.
What is all of the above?
A comfort cooling system that contains 50 pounds or more of R410 A is leaking. What will? be the new maximum allowed annual leak rate starting in 2019?
5%
10%
15%
20%
What is 10 %?
Non-condensables will cause,
What is High Discharger Pressure?
When using a recovery unit on a system containing 100 pounds of R410 A, it must be evacuated to?
0 inches of mercury
4 inches of mercury
10 inches of mercury
29.97 inches of mercury
A company uses a chiller that diverts 55% of its cooling capacity to one of its manufacturing lines, and 45% of its cooling capacity to Air-Conditioned the office spaces. Which leak rate category with this chiller be in?
What is Industrial Process Refrigeration?
Non-azeotropic refrigerants leak from a system....
What is an uneven amount due to different vapor pressures?
A high-pressure appliance containing less than 200 pounds of an HCFC or HFC refrigerant must be evacuated to weight level of......?
What is 0 inched of vacuum?
What 2 forms of measurements does a compound gauge have on it?
What is PSIG - Inches of Mercury
If a leaking appliance with a regulated refrigerant is not going to be repaired, it must be.
What is Retrofitted or Retired within 12 months?
When leak testing a low-pressure centrifugal chiller with nitrogen, what is the maximum test pressure??
What is 10 PSIG?
A ternary refrigerant blend is a ____ part mixture.
What is a 3 part mixture?
An oil sample should be collected when you are suspected of a?
What is a Compressor Burnout
According to EPA, a ________ leak detection method is considered to be the most effective for locating the general area of a small leak.
What is an Electronic or ultrasonic tester?
Unless plans are made to replace a system with a leak rate that exceeds a maximum leak rate, repairs must be made within.
What is 30 days?
A ruptured disk on a recovery vessel for low pressure refrigerant relieves at what PSIG
What is 15 PSIG?
Which of the following is an approved "drop in" service replacement for R-12?
What is there is no approved "drop in" replacements.