Down to the CORE
Type I Tech
I Pity The Fool Who Don't Recover Refrigerant
Type II Tech
Name That Refrigerant
100
On manifold gauges the low pressure gauge is color coded?
What is blue
100

If, after installing a fitting for the purpose of recovering the appliance's refrigerant, you find that the system pressure is 0 psig

Refrigerant recovery is not required

100

What is an approved "drop in " refrigerant for R-22 ? 

None ! There is no such thing as a direct drop-in replacement !!!!

100

Soap bubble testing is used when?

What is pinpointing refrigerant leaks

100

Pressure 595 PSIG

Temperature 45 degrees F

What is R-744 ( CO2 )

200
Best proof that CFCs are in the Stratosphere
What is measurement of CFCs in air samples
200
Anyone who recovers refrigerant during maintenance, service or repair of small appliances must be certified as either a Universal Technician or a:
What is Type 1 Technician
200
Recovered refrigerant may contain oils, moisture, and
What is acids
200

What is the maximum leak rate for comfort cooling ?

10% of the charge per year. 

200

Pressure 9.7 PSIG 

Temperature 20 degrees F 

What is R-1234ze

300

Refrigerant recovery and/or recycling equipment manufactured after _______________ must be certified and labeled by an EPA-approved testing organization to meet EPA standards. 

November 15, 1993 

300
If a large leak of refrigerant occurs in an enclosed area and no self contained breathing apparatus is available, then the technician should?
What is vacate and ventilate the spill area
300

Applying heat, with a heat gun, to the compressor

Can help vaporize any trapped liquid refrigerant during recovery

300

On refrigeration units that use a belt driven compressor the (blank) is most likely to leak if the unit is not used for several months

What is the rotating shaft seal

300

Pressure 78.7 PSIG 

Temperature 75 degrees F

What is R-134A 

400
A ternary refrigerant blend is a how many part mixture
What is 3 part
400
Before beginning a refrigerant recovery procedure it is ALWAYS necessary to determine:
What is the type of refrigerant in the system
400

System-dependent or passive recovery equipment use for an appliance containing HCFCs or HFCs is limited to a maximum charge of ?

15 Pounds 

400

What happens to a refrigerant that is heated above the saturation temperature?



It remains in the vapor state



400

Pressure 197 PSIG

Temperature 100 degrees F

R-717 ( Ammonia )

500

Systems charged with R-410A should be leak checked with?

What is pressurized nitrogen and a trace of R-410A Refrigerant

500

When a system is in a deep vacuum we should never energize the _________ .

Compressor

500

With a non-operating system compressor, recovery equipment must be capable of recovering

80 percent of the refrigerant or achieving 4 inches of vacuum


500

When using a recovery unit on a system containing 100 lbs. of R-410A it must be evacuated to ______ inches...

0 inches of Mercury

500

Pressure 26.9 PSIG 

Temperature 65 Degrees F

R-600 ( Isobutane ) 

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