EPA 608 Study Guide

The stratosphere is __ thick.

23 miles

The stratosphere is located ___ to ____ feet above sea level.

37,000-150,000

Recovery equipment must be:

Certified by an EPA-approved testing laboratory.

Proper recovery techniques begin with the use of appropriate recovery equipment that has been certified by:

EPA approved labr

When a system is in deep vacuum, you should never:

Energize the compressor

After the refrigerant has been recovered, which of the following should be used to flush the system?

Nitrogen

The use and release of CFCs and HCFCs has a far reaching effect on ________.

The Stratosphere

A high-pressure appliance containing less than 200 lbs. of an HCFC or HFC refrigerant must be evacuated (recovered) to a level of:

0 inches of vacuum

A high-pressure appliance containing 210 lbs. of R-407C refrigerant must be evacuated (recovered) to a level of;

10 inches of vacuum

A single chlorine atom can destroy _____ ozone molecules and has a lifetime of ___.

100,000 and 100 years

When removing oil from a low pressure system, a temperature of what must be attained?

130 degrees F

In a standard reaction, one chlorine will destroy ___ ozone and create ___ oxygen.

2-3

The EPA-required evacuation level for recovery or recycling equipment used on low-pressure systems is:

25 mm of Hg absolute

The EPA requirement for repairing leaks on small appliances states that:

30%

When charging a low-pressure system, refrigerant should be introduced to the system as a vapor to raise the system's saturation temperature to a minimum of;

36 degrees F

What is the blue gauge on a standard manifold for?

Low pressure and vacuum

What type of equipment can be worked on with Type III certification?

Low-pressure

Volcanoes provide a lot of natural chlorine into the atmosphere compared to refrigerants.

False

A refrigerant cylinder designed to hold recovered refrigerant has a:

Grey body and yellow top

The EPA requirement for repairing leaks on small appliances states that:

Leaks should be repaired whenever possible

If a leaking appliance with a regulated refrigerant is not going to be repaired, it must be:

Retrofitted or retired within 12 months

When using a system-dependent recovery system on an appliance that has an operating compressor, the technician should;

Run the compressor and recover from the high side of the system only.

Ozone is

Slightly bluish in color and has a distinct odor

Which of the following best describes the refrigerant recovery process from an R-123 system?

Start with liquid removal and then switch over to vapor recovery

Over a 20-year study, a correlation in ___ and ___ provide good evidence the chlorine in the atmosphere comes from refrigerants.

The rise of chlorine and fluorine

Technicians who perform sealed-system service on small appliances must have:

Type 1 or Universal certfication

Water must be circulated through the tubes when evacuating refrigerant in order to prevent:

Water from freezing

The chlorine in CFCs and HCFCs:

Will not dissolve in water.

Which HC refrigerant is allowed for use in new domestic small appliances?

R-600a

The standard for machine room safety is:

ASHRAE 15

A small appliance is defined by the EPA as:

Appliances manufactured, charged, and hermetically sealed in a factory with 5 Lbs or less of refrigerant

Chlorine fluorine carbon, hydrogen chlorine fluorine carbon are___

CFCs and HCFCs

The ____ atom in refrigerants is responsible for destroying ozone.

Chlorine

EPA regulations state that removal of which component constitutes a "major repair"?

Compressor

Before shipping any used refrigerant cylinders, what standards should be checked?

Department of Transformation

Crop loss, eye disease and skin cancer have been attributed to:

Depletion of stratospheric ozone

To repair a chiller operating with R-22, the technician:

Must have type II certification

The Stratosphere is supposed to contain

Ozone

After the installation of any type of system, the unit should first be:

Pressurized with an inert gas and leak checked

An accumulator ____

Prevents liquid from entering the compressor, located after the evaporator

Which of the following refrigerant has a GWP of "1"?

R-1233zd

Disposable cylinders must be:

discarded