WorksheetsSection 609 EPA Certification AIRR1003 FINAL
Total questions: 50
Worksheet time: 25mins
Name
Class
Date
1.
Which component of CFC refrigerant is the cause of ozone depletion?
a)
chlorine
b)
fluorine
c)
carbon
d)
all of the above
2.
The Stratospheric Ozone layer protects us from;
a)
polar inversion
b)
chlorine monoxide
c)
ultraviolet radiation
d)
gamma rays
3.
The current standard for recovery only equipment is SAE;
a)
J2210
b)
J2810
c)
J1732
d)
J2788
4.
When checking a cylinder of recycled HFC-134a for non-condensable gasses at 70°F, the pressure should not
exceed:
a)
50 psig
b)
76 psig
c)
90 psig
d)
134 psig
5.
Section 609 of the Federal Clean Air Act requires that all persons servicing motor vehicle air conditioning must;
a)
use EPA approved equipment
b)
be certified in recovery procedures
c)
never intentionally vent refrigerant
d)
all of the above
6.
Recovery cylinders must be;
a)
30 Ib. capacity
b)
SAE approved
c)
White in color
d)
UL or DOT approved
7.
After charging a system using manifold gauges, the refrigerant in the hoses;
a)
can be vented
b)
must be recovered
c)
is disregarded
d)
none of the above
8.
Violations of Section 609 of the Clean Air Act may result in;
a)
$27,500. fine per violation
b)
loss of technician certification
c)
an appearance in Federal Court
d)
all of the above
9.
After initial recovery procedures, the technician should;
a)
disconnect the recovery equipment
b)
add some refrigerant and leak test
c)
replace any failed components
d)
wait 5 minutes to determine 1f the system returns to a positive pressure
10.
After initial recovery procedure, if additional recovery is required, repeat the recovery process until the A/C system vacuum remains stable for;
a)
30 seconds
b)
30 minutes
c)
2 minutes
d)
1 hour
11.
Before retrofitting a motor vehicle air conditioning system, make sure that the replacement refrigerant is:
a)
readily available
b)
HCFC-22
c)
EPA - SNAP approved
d)
a blend
12.
Before charging a system with recycled refrigerant, the refrigerant should be checked for;
a)
phosgene gas
b)
acids
c)
chlorine monoxide
d)
non-condensables
13.
Service hoses must have _______ within 12” (30cm) of the end of the hose.
a)
Schrader depressors
b)
DOT tags
c)
shut off valves
d)
color codes
14.
When disposing of an empty or near empty disposable cylinder, you should;
a)
attach the cylinder to the recovery unit
b)
reduce the cylinder to a vacuum
c)
mark the cylinder empty
d)
all of the above
15.
Prior to introducing recovered refrigerant to a motor vehicle;
a)
add oil to the system
b)
leak test the system
c)
recycle the refrigerant to SAE standards (J1991 or J2099)
d)
evacuate the system
16.
Refrigerant must not be vented because;
a)
it is illegal
b)
it is expensive
c)
it depletes the ozone layer
d)
all of the above
17.
Before transferring recycled refrigerant into an empty storage cylinder, the cylinder should first be;
a)
washed with strong detergent
b)
stored in direct sunlight to dry
c)
measured with a thermometer
d)
evacuated to at least 27" hg.
18.
One kilogram is equal to;
a)
5/8th of a pound
b)
32 ounces
c)
1.8 pounds
d)
2.2 pounds
19.
Recycling equipment manufactured to SAE standards is capable of cleaning refrigerants to an acceptable level;
a)
from any type of refrigeration system
b)
only if it came from a motor vehicle
c)
but can not remove moisture
d)
but can not remove oil
20.
Recovery cylinders must not be filled above 80% of their capacity and the safe filling capacity can be controlled by;
a)
mechanical float devices
b)
electronic shut-off
c)
welght (scales)
d)
any of the above
21.
When servicing a vehicle charged with HFC-134a, you should;
a)
retrofit the vehicle to use CFC-12
b)
mix CFC-12 with HFC-134a
c)
use the same equipment as CFC-12
d)
use equipment designed for use with HFC-134a.
22.
Before charging a system that has been opened for service;
a)
add a full charge of refrigerant.
b)
flush the system
c)
the system should hold 27” vacuum for at least one minute before charging
d)
pressurize the system with air
23.
Refillable cylinders used to transport recovered refrigerants;
a)
must be DOT approved
b)
must be properly labeled and tagged
c)
must be hydrostatically tested every 5 years
d)
all of the above
24.
When a leak 1s found in an automotive air conditioning system;
a)
the EPA does not require leak repair
b)
leak repair is mandatory in some states
c)
repair leaks whenever possible
d)
all of the above
25.
Depletion of the ozone layer causes:
a)
skin cancer
b)
eye disease
c)
Crop loss
d)
all of the above
26.
The only accurate method of charging is to;
a)
charge until the sight glass is clear
b)
charge until gauge pressures are correct
c)
weigh the refrigerant into the system
d)
charge as a vapor with the engine running
27.
Which of the following refrigerant has the lowest GWP?
a)
R410A
b)
R134A
c)
R152a
d)
R744
28.
All devices used to recover/recycle refrigerant must;
a)
be portable
b)
contain a heavy duty pump
c)
meet EPA standards
d)
all of the above
29.
The lubricant used with HFC-134a is;
a)
mineral oil
b)
PAG or POE (ester) oil
c)
alkylbenzene oil
d)
whale oil
30.
In which model year will HFC-134a be unacceptable in new light-duty vehicles
a)
2017
b)
2021
c)
2023
d)
2025
31.
NEVER expose CFC-12 to open flame because they may form;
a)
hydrochloric acid
b)
hydrofluoric acid
c)
phosgene gas
d)
all of the above
32.
Definition of RECOVER:
a)
remove refrigerant in any condition, from a system, and store it in an external container.
b)
process refrigerant to a level equal to new product specs.
c)
clean refrigerant for reuse by oil separation and passes through moisture absorption device.
d)
remove refrigerant from shop for disposal.
33.
When operating recovery or recycling equipment, you should:
a)
wear safety glasses.
b)
wear protective gloves.
c)
follow all safety precantions for the equipment.
d)
all of the above.
34.
Definition of RECYCLE:
a)
process refrigerant to a level equal to new product specs.
b)
remove refrigerant in any condition, and store it in an external container.
c)
clean refrigerant for reuse by oil separation and passes through moisture absorption device.
d)
remove refrigerant from shop for disposal.
35.
Definition of RECLAIM:
a)
process refrigerant to a level equal to new product specs. as determined by chemical analysis.
b)
to remove refrigerant in any condition, and store it in an external container without necessarily testing.
c)
clean refrigerant for reuse by oil separation and passes through moisture absorption device.
d)
remove refrigerant from shop for disposal.
36.
Failure of a system to hold a vacuum concluding the evacuation process indicates that;
a)
the system is ready to be charged
b)
a leak in the system may exist
c)
the system has been adequately evacuated
d)
the orifice tube is plugged
37.
Under what conditions may you use a disposable cylinder to recover refrigerant?
a)
when the system contains the same refrigerant as the cylinder
b)
only in an emergency
c)
never
d)
when the system contains less than 5 Lbs. of refrigerant
38.
A refrigerant oil that is hygroscopic;
a)
is a good lubricant
b)
has a high affinity for water
c)
is crude oil and unrefined
d)
can be left open to the ambient air
39.
Recovery of refrigerants is necessary for;
a)
adequate supplies for service after production bans
b)
prevention of venting to the atmosphere
c)
prevention of stratospheric ozone depletion
d)
all of the above
40.
An award of up to may be paid to a person supplying information that leads to a penalty against a technician who is intentionally venting?
a)
$5,000
b)
$50,000
c)
$25,000
d)
$10,000
41.
When retrofitting a CFC-12 system to HFC-134a;
a)
replace the accumulator/drier with one that contains an XH-7 or XH-9 desiccant
b)
affix HFC-134a label to the system
c)
recover any remaining CFC-12
d)
all of the above
42.
Recycling equipment that shares a common refrigerant circuit for both CFC-12 and HFC-134a, must be certified to _______ standard.
a)
SAE J1989
b)
SAE J1990
c)
SAE J1770
d)
none of the above
43.
R152a has a GWP of;
a)
1,300
b)
1
c)
120 to 140
d)
1,925
44.
The proper method of charging a blended refrigerant is in the;
a)
vapor phase
b)
liquid phase
c)
closed position
d)
open position
45.
A high compression ratio may result in;
a)
compressor failure
b)
moisture in the system
c)
less strain on the compressor
d)
orifice tube clogging
46.
A gauge pressure of _______ psi is required during leak testing.
a)
20
b)
50
c)
80
d)
90
47.
The Montreal Protocol is;
a)
an international treaty controlling CFC’s & HCFC’s
b)
a set of rules governing etiquette
c)
a method to determine ozone levels
d)
a mandated procedure for the recovery of refrigerants
48.
One chlorine atom in the stratosphere can destroy up
to _______ ozone molecules.
a)
100
b)
1,000
c)
10,000
d)
100,000
49.
Which of the following is considered to be a good service practice?
a)
repair leaks whenever possible
b)
recover and recycle refrigerant
c)
determine the type of refrigerant in the system before recovery
d)
all of the above
50.
Never inhale refrigerant vapors or mist in high concentrations because:
a)
they may cause melanoma
b)
they may lower your body temperature
c)
they may cause heart irregularities or unconsciousness
d)
hey are poisonous
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