WorksheetsEPA 608 Type II
Total questions: 30
Worksheet time: 15mins
What is the definition of a Type II appliance?
A high pressure appliance containing more than 5 lbs of refrigerant
A high pressure appliance containing less than 5 lbs of refrigerant
A low pressure appliance containing more than 5 lbs of refrigerant
An appliance containing less that 5 lbs of refrigerant
Which of the following is an example of a Type II appliance?
A residential refrigerator
A window AC unit
A low pressure chiller
A split heat pump
What is NOT included as a Type II appliance for the EPA 608 Certification?
Commercial refrigeration
Motor vehicle air conditioning systems (MVAC)
Industrial process refrigeration
Comfort cooling systems
On comfort cooling equipment containing 50 lbs or more of refrigerant charge, leaks must be repaired when the annual leak rate reaches ____.
40%
30%
10%
20%
Leaking appliances that are not going to be repaired must be:
Retrofitted or retired within 3 months.
Retrofitted or retired within 6 months.
Retrofitted or retired within 12 months.
Retrofitted or retired within 24 months.
Commercial refrigeration containing 50 lbs or more of refrigerant charge must be repaired when the annual leak rate exceeds ____.
20%
10%
40%
30%
Industrial process refrigeration containing 50 lbs or more of refrigerant charge must be repaired when the annual leak rate exceeds ____.
40%
10%
30%
20%
What should be done first, after installing a refrigeration or air conditioning system?
pull a vacuum on the system
pressurize the system with nitrogen(inert gas) and leak test
charge the system with refrigerant
Electronic and ultrasonic leak detectors are used for which purpose?
to sense refrigerant concentration(ppm) in a mechanical room
pinpointing the exact location of the leak
repairing small leaks
locating the general area of a leak
What is used to pinpoint the location of a refrigerant leak?
electronic leak detector
ultrasonic leak detector
halide torch leak detector
soap bubble solution
A refrigeration unit with an open drive compressor, that has not been used in several months is likely to leak from which part of the system?
inlet of the metering device
filter drier
suction line accumulator
rotating shaft seal
Which of the following is an indication of a leak in a medium or high pressure refrigeration system?
excessive superheat
higher than normal discharge pressure
excessive subcooling
higher than normal suction pressure
Which of the following is considered a "major repair" under EPA regulations?
Replacing the filter drier
Replacing the compressor
Replacing a condenser fan motor
Replacing the pressure switch
What should be replaced any time a system is opened for repair or service?
Compressor
Evaporator coil
Liquid line filter drier
Pressure switch
What can a strong odor detected during the recovery process indicate?
A refrigerant leak
A compressor burn-out
A condenser burn-out
That the liquid line filter needs to be replaced
What does a filter drier do?
Separates the refrigerants
Removes air from the refrigerant and oil
Removes a small amount of moisture from the refrigerant and oil
Removes the oil from the refrigerant
After reaching the desired vacuum during recovery, the technician should then:
wait a few minutes to see if the system pressure rises, indicating there is still refrigerant in liquid form or in the oil
pressurize the system with nitrogen
disconnect all recovery hoses
Recovery equipment must be certified by:
An EPA approved testing laboratory
An HVAC technician
An EPA technician
The manufacturer
Recover refrigerant from the condenser outlet if:
The condenser is above the receiver
The condenser is below the receiver
The condenser is to the right of the receiver
The condenser is on top of the unit
What can a technician do to speed up the recovery process on a high pressure appliance?
Heat the system or pack the recovery tank in ice/cold water
Pack the system in ice and warm the recovery tank
Heat the system and the recovery tank
Cool the system or heat up the recovery tank
Which of the following are examples of low loss fittings?
All of these
Self sealing hoses
Hand valves
Quick couplers
What can a technician do to minimize oil loss when recovering refrigerant from a high pressure system?
Recover liquid refrigerant
Recover refrigerant in vapor phase
Cool the compressor
Recover the oil first
A compressor in a parallel rack system must have the _________ isolated prior to recovery.
Condenser
Open equalization connection
Liquid receiver
Hand valves
Recovered refrigerant may contain which of the following?
acids
oil
all answers are correct
moisture
Recovered refrigerant may contain which of the following?
acids
oil
all answers are correct
moisture
Recovery and recycling equipment using hermetic compressors, have a tendency to overheat when drawing a deep vacuum, due to which of the following?
increased vapor pressure
low voltage
high ambient temperatures
the unit relies on the flow of refrigerant to cool the compressor
What should be done prior to recovery?
check service valve positions
check oil level in recovery unit
evacuate or recover any remaining refrigerant from the recovery unit
all answers are correct
What should be done when working with HFC and HFO refrigerants?
all answers are correct
provide a separate set of gauges and hoses
provide a separate vacuum pump
ensure recovery unit is approved for use with HFCs and HFOs
Large capacity recovery units may have a water cooled condenser, to aid in faster recovery. These units require a connection to which of the following?
municipal or potable water supply
de-ionized water
chilled water
at least 120 degree F water
When is a technician permitted to recover to 0 psig, instead of the required recovery levels?
When the refrigerant being recovered is an HFC or HFO
all answers are correct
When the repair is major
When leaks in the appliance make the prescribed recovery levels unattainable
