High Pressure
This should be Review
Leaky
Chilly's
Be Careful
100

Which of the following always Falls under the EPA definition for "Major Maintenance, Service or Repair"

What is a compressor? 

100

Which of the following should be replaced if a system is opened for servicing?

Filter-Dryer

Thermostat

Metering Device 

Crankcase Heater

Filter Dryer

100

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?

100

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?

100

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

200

Recovering refrigerant from a system in the vapor phase will minimize the loss of what 


What is oil?

200

Recovered refrigerant may contain which of the following impurities?

Acids, Moisture, and oil.

200

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. 

200

Where should the discharge from a ruptured disk be piped for venting?

What is outside?

200

What can be done with the refrigerant trace gas and  nitrogen mixture after a system leak is found?

What is can be vented?

300

When inspecting a system for leaks, you should look for?

What are traces of oil?

300

Pressure Relief valves must not be:

installed in series

installed in parallel

installed vertically

installed horizontal

What is installed in series?

300

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?

300

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 %

300

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?

400

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 %?

400

Non-condensables will cause,

What is High Discharger Pressure?

400

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

What is 0 inches of Mercury?
400

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?

400

Non-azeotropic refrigerants leak from a system....

What is an uneven amount due to different vapor pressures? 

500

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?

500

What 2 forms of measurements does a compound gauge have on it?

What is PSIG - Inches of Mercury 

500

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?

500

When leak testing a low-pressure centrifugal chiller with nitrogen, what is the maximum test pressure??

What is 10 PSIG?

500

A ternary refrigerant blend is a ____ part mixture.

What is a 3 part mixture?

600

An oil sample should be collected when you are suspected of a?

What is a Compressor Burnout 

600

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?

600

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?

600

A ruptured disk on a recovery vessel for low pressure refrigerant relieves at what PSIG

What is 15 PSIG?

600

Which of the following is an approved "drop in" service replacement for R-12?

What is there is no approved "drop in" replacements. 

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