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Worksheetsassessment in learning
Total questions: 20
Worksheet time: 10mins
which of the following PPE is most important when handling refrigerants?
helmet
safety goggles and gloves
earplugs
safety boots
why should power always be disconnected before servicing HVACR equipment?
to save electricity
to avoid electrical shock or injury
to make the job faster
to reduce noise
what is the primary reason for using leak detectors when working with refrigerants?
to prevent environmental contamination
to ensure proper refrigerant levels
to reduce noise levels
to improve system efficiency
which of the following should be done before transporting refrigerants?
label the containers
check for leaks
secure the containers
all of the above
what is the recommended action if a refrigerant spill occurs?
ventilate the area only
ignore it and continue working
evacuate the area and report it
clean it up with water
what safety measure should be taken when working with high-pressure refrigerants?
all of the above
work in a well-ventilated area
use a pressure gauge
wear a face shield
which type of refrigerant is considered ozone-depleting?
R-22
R-410A
R-134a
R-404A
what is the first step to take if you suspect a refrigerant leak?
evacuate the area
notify your supervisor
check the pressure readings
turn off the system
what is the proper way to dispose of used refrigerants?
mix it with other waste
release it into the atmosphere
return it to a certified recycling facility
store it indefinitely
which of the following is a sign of a refrigerant leak?
all of the above
frost on the refrigerant lines
increased energy bills
unusual noises from the compressor
what should be done if refrigerant is accidentally inhaled?
continue working
wait for symptoms to pass
drink water
move to fresh air and seek medical attention
what is the main purpose of using a refrigerant recovery machine?
to monitor temperature changes
to cool the refrigerant faster
to recover and recycle refrigerants
to increase system pressure
what should be checked regularly to ensure the efficiency of an HVACR system?
the refrigerant levels
the color of the refrigerant
the age of the equipment
the noise level of the system
which of the following is a common symptom of low refrigerant levels?
frost on the evaporator coil
all of the above
increased compressor noise
higher humidity levels
what is the best practice for checking refrigerant levels in an HVACR system?
only check during repairs
check once a year
estimate visually
use a digital gauge
what should be done if a refrigerant container is damaged?
repair it immediately
leave it as is
transfer the refrigerant to a safe container
dispose of it in regular trash
which of the following is a potential health risk of refrigerant exposure?
skin irritation
headaches
respiratory issues
all of the above
which of the following is a common method for detecting refrigerant leaks?
all of the above
visual inspection only
using a soap solution
listening for hissing sounds
what is the recommended procedure for handling refrigerant cylinders?
leave them open
keep them upright and secure
transport them without a cap
store them in a warm area
what should be done if a refrigerant leak is detected in a confined space?
cover the leak with a cloth
wait for the leak to stop
ignore it if no one is present
immediately ventilate the area
