EPA Type 1

According to the EPA, a small appliance is

A system containing 5 lbs of refrigerant or less including PTACs

As of ________, the EPA requires technicians performing a sealed system repair to be certified

November 14, 1994

Under conditions of ARI 740-1993, recovery devices manufactured before November 15,1993, must

be able to remove 80% of the refrigerant charge or achieve Hg vacuum

Under conditions of ARI 740-1993, recovery devices manufactured after November 15, 1993,must

be able to remove 80% of the refrigerant charge or achieve Hg vacuum, if the system's compressor is not operating.

Technicians must certify their recovery equipment with the EPA after

November 15, 1993

The EPA

does not require a leak in a small appliance to be repaired

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

it will decrease the time of the refrigerant recovery

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

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

The pressure of an R-12 cylinder at ambient temperature will be

70 psig

Which of the following refrigerant must not be recovered with a current recoverysystem?

R-717 ammonia

Which of the following refrigerant is considered a replacement for R-12 refrigerant?

R-134A

Which of the following is a direct replacement for R-12 when no oil change or systemadjustments are required?

NOT R-134A or R-131A

When pressurizing a system with nitrogen, it is required to have

a pressure regulator and a relief valve

After installing a piercing valve onto a system

leak test the valve

If refrigerants are exposed to open flames and hot surfaces

phosgene gas and hydrochloric hydrofluoric acids are produced

What may cause a pungent odor in a CFC/HCFC system?

a burnt compressor

Which of the following is required if a large amount of R-12 has been released?

a self-contained breathing apparatus

At what temperature is R-22 when its pressure is 121 psig?

70 F

At what pressure is R-502 when its temperature is

161 psig

Relief valves must never be installed

in series

The color code for refrigerant recovery tanks is

yellow tops with gray bottoms

If EPA regulations change after a technician becomes certified

It will be the technicians responsibility to comply with any future changes in the law

Recovery equipment used during maintenance service or repair of small appliances must be certified by an EPA-approved laboratory if manufactured after

November 15 1993

When checking for non-condensables inside a recovery cylinder, why should the technician allow the temperature ofthe cylinder to stabilize to room temperature before taking a pressure reading?

Comparisons to a pressure-temperature chart are only valid if both the pressure and temperature of the refrigerant arestable and known

When recovering refrigerant into a non-pressurized container from a refrigerator with an inoperative compressor:

It is necessary to heat the compressor and strike it with a rubber mallet

The system-dependent (passive) recovery process for small appliances

Captures refrigerant in a non-pressurized container

When filling a graduated charging cylinder refrigerant that is vented from the top of the cylinder:

Must be recovered

When R-500 is recovered from an appliance it:

Must be recovered into its own recovery vessel that is clearly marked to ensure that mixing of refrigerants does not occur

Using the system-dependent (passive) recovery process, which condition requires accessing both high and low side of the system for refrigerant recovery

When the compressor does not run

When using recovery cylinders and equipment with Schrader valves it is critical to

-Inspect the Schrader valve core for bends and breakage

-Replace the damaged Schrader valve core to prevent leakage

-Cap the Schrader ports to prevent accidental depression of the valve core

If a large leak of refrigerant occurs such as from a filled cylinder in an enclosed area, what action should be takenwhen no self-contained breathing apparatus is available?

Vacate and ventilate the spill area

The sale of CFC and HCFC refrigerants is

Restricted to technicians who are EPA certified in refrigerant recovery

Refrigerants (R-12, R-22, R-500 etc...) in large quantities can cause suffocationbecause

They are heavier than air and displace oxygen

The system dependent (passive) recovery process

Recovers refrigerant in an non-pressurized container

At high temperatures, (open flames, glowing metal surfaces, etc...) R-12 and R-22 candecompose to form

Phosgene gas

Before beginning a refrigerant recovery procedure it is always necessary to

Know the type of refrigerant that is in the system