Type 3 Quiz

The purpose of a hydrostatic tube test is to:

• determine if a tube has refrigerant in it

• determine if a tube is leaking

• determine if the pressure inside of the tube is less than required

• none of the above

A chiller containing 150 pounds of HCFC refrigerant is leaking above the leak rate threshold.  The repair must be completed within ___days unless granted additional time.

• repair within 60 days

• repair within 35 days

• repair within 30 days

• not applicable, repair whenever possible

In order to determine a chillers normal charge for leak rate calculations the best method would be to:

• estimate 20lb per ton

• estimate 36 lb.per ton

• use the charge stated on the equipment nameplate

• base charge on manifold pressure readings

Under Standard 34 R-123 falls under group _________.

Select one:

• A1

• A2

• B1

• B2

A technician servicing low- pressure appliances must be certified under

• Type III cert. Of section 608

• Type II cert. Of section 608

• Type I Of section 608

• All of the above

When recharging a low-pressure system, you should allow enough ____________ to enter the system until the refrigerant saturation temperature increases to _______degrees before introducing liquid refrigerant.

• vapor / 32

• vapor / 36

• liquid / 32

• liquid / 36

During a chiller refrigerant recovery process, you should:

• circulate water through the chiller to prevent water from freezing

• circulate oil through the chiller to prevent water from freezing

• circulate glycol to prevent the chiller water from freezing

• either a or b

Under EPA regulations, the replacement of a _______________would always be considered a major repair.

• filter

• drier

• piston

• evaporator

The leak rate threshold for comfort cooling appliances with a full charge of 50 pounds or more of HCFC refrigerant is _________%.

• 30

• 20

• 25

• 10

 _________refrigerant will be contained in oil at a higher temperature.

• More

• Less

• Same amount regardless of temp.

• Either b or c