Refrigeration & Air Conditioning
A desiccant is used to...? - ANSWER-Absorb moisture
A little moisture in the AC system is OK (T/F) - ANSWER-False you fool
A refrigerant label should be placed on a refrigerant cylinder to be... - ANSWER-Returned for
reclaiming
An award of up to what amount may be paid to a person supplying information that leads to a
penalty against a technician who is intentionally venting? - ANSWER-$10,000
Approved refrigerant recovery cylinders can be identified by what color code? - ANSWER-Yellow tops,
and gray bodies
Can mixed refrigerants be reclaimed? - ANSWER-No
Chlorofluorocarbon refrigerants are so Mamés because they contain the elements; - ANSWER-
Chlorine
Fluorine
Carbon
Define atmospheric pressure - ANSWER-Atmospheric pressure, or air pressure, is the force exerted
on a surface by the air above it as gravity pulls it to Earth
Do HFC contribute to global warming and do they damage the ozone layer? - ANSWER-No
Does atmospheric ozone affect the surface temperature of the earth? - ANSWER-Yes
Does hygroscopic refrigerant oil absorb or reject moisture? - ANSWER-Absorb
Does stratosphere ozone help or hurt the work of the earth's protective shield? - ANSWER-It helps
Heat always moves from...? - ANSWER-Hot to Cold
, Refrigeration & Air Conditioning
How can a sight glass be cleaned of ice? - ANSWER-Isopropyl alcohol spray
How much ozone can a chlorine atom destroy in the stratosphere? - ANSWER-100,000 ozone
molecules
If a system will not hold a vacuum after it has been evacuated, then... - ANSWER-the system may be
leaking
In addition to preventing and repairing leaks, what else should a technician do to conserve
refrigerant? - ANSWER-Finding and repairing leaks.
Recover and recycle refrigerant
Is boiling water at a pressure of 25 psi hotter or colder than boiling water at a pressure of 14 psi? -
ANSWER-Hotter
Is flushing with refrigerant an acceptable tube cleaning method? - ANSWER-Nope
Is one of the components of R-500 a CFC? - ANSWER-Yes and HCFC's
Is ozone depletion in the stratosphere a global problem? - ANSWER-Sí señor
Is the pressure of the refrigerant entering the compressor high or low? - ANSWER-low pressure vapor
Is there a refrigerant drop in for r-12? - ANSWER-No
Latent heat is heat that can be measured. (T/F) - ANSWER-False
List two conditions that can quickly damage a compressor that is starting to run - ANSWER-A deep
vacuum or closed service valves
On what date did it become illegal to VENT CFC and HCFC refrigerants? - ANSWER-July 1, 1992
A desiccant is used to...? - ANSWER-Absorb moisture
A little moisture in the AC system is OK (T/F) - ANSWER-False you fool
A refrigerant label should be placed on a refrigerant cylinder to be... - ANSWER-Returned for
reclaiming
An award of up to what amount may be paid to a person supplying information that leads to a
penalty against a technician who is intentionally venting? - ANSWER-$10,000
Approved refrigerant recovery cylinders can be identified by what color code? - ANSWER-Yellow tops,
and gray bodies
Can mixed refrigerants be reclaimed? - ANSWER-No
Chlorofluorocarbon refrigerants are so Mamés because they contain the elements; - ANSWER-
Chlorine
Fluorine
Carbon
Define atmospheric pressure - ANSWER-Atmospheric pressure, or air pressure, is the force exerted
on a surface by the air above it as gravity pulls it to Earth
Do HFC contribute to global warming and do they damage the ozone layer? - ANSWER-No
Does atmospheric ozone affect the surface temperature of the earth? - ANSWER-Yes
Does hygroscopic refrigerant oil absorb or reject moisture? - ANSWER-Absorb
Does stratosphere ozone help or hurt the work of the earth's protective shield? - ANSWER-It helps
Heat always moves from...? - ANSWER-Hot to Cold
, Refrigeration & Air Conditioning
How can a sight glass be cleaned of ice? - ANSWER-Isopropyl alcohol spray
How much ozone can a chlorine atom destroy in the stratosphere? - ANSWER-100,000 ozone
molecules
If a system will not hold a vacuum after it has been evacuated, then... - ANSWER-the system may be
leaking
In addition to preventing and repairing leaks, what else should a technician do to conserve
refrigerant? - ANSWER-Finding and repairing leaks.
Recover and recycle refrigerant
Is boiling water at a pressure of 25 psi hotter or colder than boiling water at a pressure of 14 psi? -
ANSWER-Hotter
Is flushing with refrigerant an acceptable tube cleaning method? - ANSWER-Nope
Is one of the components of R-500 a CFC? - ANSWER-Yes and HCFC's
Is ozone depletion in the stratosphere a global problem? - ANSWER-Sí señor
Is the pressure of the refrigerant entering the compressor high or low? - ANSWER-low pressure vapor
Is there a refrigerant drop in for r-12? - ANSWER-No
Latent heat is heat that can be measured. (T/F) - ANSWER-False
List two conditions that can quickly damage a compressor that is starting to run - ANSWER-A deep
vacuum or closed service valves
On what date did it become illegal to VENT CFC and HCFC refrigerants? - ANSWER-July 1, 1992
