EPA 608 Type 3

When you are finished with a disposable refrigerant cylinder you should

• dispose of it in a construction dumpster

• refill it again as long as you do not use a CFC

• recover any refrigerant, render the cylinder unusable, and properly dispose of it

• use it as an air tank

Tags

NGSS.HS-LS2-7

When brazing or exposing refrigerants to open flames or red hot metal,

• R-12 and R-22 can form a phosgene gas.

• R-12 and R-22 can form hydrochloric and hydroflouric acids

• ensure you are in a well ventilated area.

• All of the above

Tags

NGSS.HS-PS1-4

When using system dependent (passive) recovery, the EPA requires

• 80% of the refrigerant to be removed if the compressor is operating

• 80% of the refrigerant to be removed if the compressor is not operating.

• 90% of the refrigerant to be removed if the compressor is not operating

• 70% of the refrigerant to be removed if the compressor is operating

Which of the following refrigerants must be recovered with a current recovery system?

• R-12 CFC

• R-502 azeotrope

• R-717 ammonia

• R-22 HCFC

While recovering refrigerant, why is it necessary to install a piercing valve on both the high and the low side of a small appliance that has an inoperative compressor?

• It will help drain the oil out of the system while recovering the refrigerant.

• It will help decrease the rate of refrigerant evaporating

• It is just a waste of time and is not necessary at all

• It will decrease the time of the refrigerant recovery

Which refrigerant is the closest match to R-12 on your pressure temperature chart?

• R-22

• R-134a

• R-502

• R-124

If after you install piercing valves on a sealed system you connect your manifold gauges and read 0 psig.

• Do not begin the recovery process

• You should pressure test the system

• Report to the EPA that someone must have vented the refrigerant

• Recover as you normally

What is the primary concern when dealing with high-pressure refrigerants in EPA 608 Type 3 systems?

• A) Flammability

• B) Toxicity

• C) Ozone depletion

• D) High pressure safety

Tags

NGSS.HS-ETS1-3

Which of the following is a requirement for technicians working with EPA 608 Type 3 systems?

• A) Must use a recovery machine certified for high-pressure refrigerants

• B) Must wear protective gloves at all times

• C) Must report refrigerant usage to the EPA monthly

• D) Must use only recycled refrigerants

In EPA 608 Type 3, what is the maximum allowable leak rate for industrial process refrigeration?

• A) 5% per year

• B) 10% per year

• C) 15% per year

• D) 20% per year