EPA Type 2 Flashcards
Comfort cooling appliances with a 50 pound charge or more with an annualized leak rate of _____ or more must have leaks repaired.
A 15%
B 25%
C 35%
D 40%
A 15%
Unless plans are made to replace a system exceeding the maximum leak, repairs must be made in;
A 30 days.
B 45 days.
C 60 days.
D 90 days.
A 30 days
Refrigerants CFC R-12, HCFC R-22, and HFC 134a are all classified as;
A Type B-1
B Type B-2
C Type A-1
D Type A-2
C Type A-1
All Refrigeration & HVAC systems are protected by a;
A Low pressure switch
B High pressure switch
C Compressor impedance overload
D Pressure relief valve
D Pressure relief valve
A refrigerant sensor which will sound an alarm and automatically start a ventilation system in occupied equipment rooms fall under;
A ASHRAE Standard 15
B ASHRAE Standard 34
C ASHRAE Standard 44
D ASHRAE Standard 60
A ASHRAE Standard 15
Non-condensables will cause;
A Low superheat
B Low discharge pressure
C High superheat
D High discharge pressure
D High discharge pressure
A crankcase heater is often used to prevent refrigerant from migrating to the oil during periods of:
A Low ambient temperature
B High ambient temperature
C Low humidity
D High humidity
A Low ambient temperature
EPA regulations state that maintenance, service or repair involving the removal of the following component is a “major repair”
A Pressure switch
B Compressor
C Liquid line drier
D Evaporator fan motor
B Compressor
Which of the following refrigerants is an HCFC?
A R-22
B R-134a
C R-1234YF
D R-410A
A R-22
What can be done with the refrigerant trace gas and nitrogen after the leak is found?
A Recover the mixture.
B Recover in a special recovery tank.
C Recycle the refrigerant back into the system.
D Release to the atmosphere.
D Release to the atmosphere.
High pressure appliances can be evacuated to atmospheric pressure (O psig) when;
A Using both liquid and suction line driers
B the appiance is charged with an HFC refrigerant
C Charging Refrigerant back into the system after a minor repair
D There is a leak
D There is a leak
If a high pressure appliance containing 100 lbs. of an HCFC OTHER THAN R-22 refrigerant Recovery and/or Recycling equipment manufactured after November 15, 1993 must be evacuated to a level of;
A 15 inches of vacuum
B 10 inches of vacuum
C 4 inches of vacuum
D 0 inches of vacuum
B 10 inches of vacuum
When dehydrating a system it should be evacuated to a level of;
A 30 inches of Mercury
B 25,000 Microns
C 500 Microns
D EPA does not have a requirement
C 500 Microns
When recovering from a system with a refrigerant leak, recover to a level of;
A Need not be recovered
B Same as any system
C 0 Psia
D 0 Psig
D 0 Psig
When using a recovery system manufactured after November 15, 1993 on a system containing 100 lbs. of R-502 must be evacuated to;
A 0 inches of Mercury
B 4 inches of Mercury
C 10 inches of Mercury
D 15 inches of Mercury
C 10 inches of Mercury
If a high pressure appliance containing 210 lbs. of R-22 refrigerant Recovery and/or Recycling equipment manufactured before November 15, 1993 must be evacuated to a level of;
A 15 inches of vacuum
B 10 inches of vacuum
C 4 inches of vacuum
D 0 inches of vacuum
C 4 inches of vacuum
What conditions allow for a system to be opened and repaired without recovering the refrigerant to the required vacuum level?
A a system with a large leak and system pressure of atmospheric.
B replacement of a major component
C system uses a CFC type refrigerant
D the compressor is not operational
A a system with a large leak and system pressure of atmospheric.
A new split system should be checked for leaks by;
A pressurizing the system with a few ounces of R-22 and compressed air.
B pressurizing the system with a few ounces of CFC-12 and an inert gas.
C releasing the factory charge in the condensing unit.
D pressurizing the system with a few ounces of R-22 and an inert gas.
D pressurizing the system with a few ounces of R-22 and an inert gas.
An overcharged system will operate;
A with a lower head pressure.
B less efficiently.
C with higher efficiencies.
D with low power consumption.
B less efficiently.
Refrigerant should be removed from the condenser outlet if the condenser is;
A Below the receiver
B Above the receiver
C On the roof
D Is leaking
A Below the receiver
EPA regulations require that all Commercial and Industrial Process Refrigeration containing more than 50lbs. of refrigerant MUST be repaired when the annual leak rate exceeds;
A 15 %
B 30 %
C 35 %
D 80 %
C 35 %
Proper recovery techniques begin with the use of appropriate recovery equipment that has been certified by;
A EPA only
B Manufactures approved by UL
C EPA approved laboratory
D EPA field supervisors
C EPA approved laboratory
What happens to a refrigerant that is above the saturation temperature?
A It remains in a vapor state.
B It remains in a liquid state.
C It absorbs moisture at an increased rate.
D It cools the compressor more efficiently.
A It remains in a vapor state.
Which of the following refrigerant is considered high or very high pressure refrigerant?
A CFC-11
B HFC-134a
C HCFC-123
D All CFCs
B HFC-134a
Air conditioning system short cycling is normally caused by;
A the system being too small for the home.
B the system being oversized for the home.
C a dirty condenser.
D a dirty evaporator.
B the system being oversized for the home.
What level of recovery ( in inches of mercury) is required when:
HCFC-22 appliances or isolated components of such appliances normally containing less than 200 lbs. of refrigerant before 11/15/93
A) 0
B) 4
C) 10
D) 15
A) 0
What level of recovery ( in inches of mercury) is required when:
HCFC-22 appliances or isolated components of such appliances normally containing less than 200 lbs. of refrigerant after 11/15/93
A) 0
B) 4
C) 10
D) 15
A)0
What level of recovery ( in inches of mercury) is required when:
HCFC-22 appliances or isolated components of such appliances normally containing more than 200 lbs. of refrigerant after 11/15/93
A) 0
B) 4
C) 10
D) 15
C) 10
What level of recovery ( in inches of mercury) is required when:
HCFC-22 appliances or isolated components of such appliances normally containing more than 200 lbs. of refrigerant before 11/15/93
A) 0
B) 4
C) 10
D) 15
B) 4
What level of recovery ( in inches of mercury) is required when:
Other high pressure appliances or isolated components of such appliances normally containing more than 200 lbs. of refrigerant before 11/15/93
A) 0
B) 4
C) 10
D) 15
B)4
What level of recovery ( in inches of mercury) is required when:
Other high pressure appliances or isolated components of such appliances normally containing more than 200 lbs. of refrigerant after 11/15/93
A) 0
B) 4
C) 10
D) 15
D)15
What level of recovery ( in inches of mercury) is required when:
Other high pressure appliances or isolated components of such appliances normally containing less than 200 lbs. of refrigerant before 11/15/93
A) 0
B) 4
C) 10
D) 15
B)4
What level of recovery ( in inches of mercury) is required when:
Other high pressure appliances or isolated components of such appliances normally containing less than 200 lbs. of refrigerant after 11/15/93
A) 0
B) 4
C) 10
D) 15
C)10
