Technicians that handle refrigerant during service, maintenance, or repair of small appliances must have:
Universal certification
Type I
Type I or
... [Show More] Universal certification - pType I or Universal certification
uMVAC or motorized vehicle air conditioning systems fall under the small appliance regulations
True
False - pFalse
UTemperature/pressure chart is used for which of the following:
Identify the refrigerant
Compressing ability of Refrigerant
All the options are correct
Specific heat of air - pIdentify the refrigerant
uEPA defines a small appliance as a product that is fully manufactured, charged, and hermetically sealed in a factory with ______ or less of refrigerant:
ten pounds
twenty pounds
five pounds
fifteen pounds - pFive Pounds
uRecovery equipment manufactured before November 15, 1993 must be capable of recovering ______ of the refrigerant:
80%
60%
90%
70% - p80%
uAll refrigerant recovery equipment should be checked for _____ on a daily basis:
Refrigerant leaks
Oil level
Both Oil level and Refrigerant leaks - pBoth Oil level and Refrigerant leaks
u____ uses its own power to recover the refrigerant from systems:
Passive recovery equipment
Both Active and Passive recovery equipment
Active recovery equipment - pActive recovery equipment
uSale of which of the following refrigerants are not limited to technicians:
CFC
HCFC
All the refrigerants are restricted
HFC - pHFC
uWhich refrigerants can be mixed in recovery cylinder:
R410a and R11
R410a, R22 and R11
R410a and R22
Refrigerants should not be mixed - pRefrigerants should not be mixed
uA _______captures refrigerant into a non-pressurized container:
Active recovery process
Both Active or Passive recovery process
Passive recovery process - pPassive recovery process
uAll appliances must have a service aperture valve for which of the following:
Both for recovering and charging refrigerant
Charging refrigerants:
Recovering refrigerants - pBoth for recovering and charging refrigerant
uReferences to the pressure/temperature chart for determining the type of refrigerant are only valid if the _____ is known:
Volume of Cylinder
Pressure
Temperature - pTemperature
uSystem-dependent recovery process must use a pressurized container to capture the refrigerant
True
False - pFalse
uFor refrigerators, if the refrigerant is ammonia or sulfur dioxide, the thermodynamic cooling process typically is of which of the following:
Heat-driven absorption
Vapor compression
Both the options are correct - pHeat-Driven Absorption
uDo not use vacuum pumps or recovery machines on equipment that contains hydrogen:
True
False - pTrue
uIn which of the following recovery system only a single piercing access valve needs to be installed
System-dependent recovery unit
Self-contained recovery unit - pSelf-contained recovery unit
uWhich of the following test is used to determine the type of refrigerant:
ARI 1100 purity test
ARI 740 purity test
ARI 700 purity test
ARI 1000 purity test - pARI 700 Purity Test
uHydrogen and water present as components of refrigerants are required to be recovered by EPA regulations:
False
True - pFalse
uA graduated charging cylinder is designed to charge a system accurately with refrigerant:
False
True - pTrue
uNot opening the tank inlet valve or having excess air will cause higher discharge pressures in self-contained recovery device
False
True - pTrue
uChecking for air or non-condensables can be done by checking which of the following inside the recovery tank: - pPressure
uWhich of the following recovery devices will recover the refrigerant faster:
active recovery devices
Recovery rate is independent of active and passive recovery device used
passive recovery devices - pActive Recovery Devices
u________ stub is attached to the filter drier in a refrigeration system:
High-side process
Low-side process - pHigh-Side Process
uSystem-dependent recovery can -be used only on appliances containing ______ or less of refrigerant:
5 pounds
25 pounds
20 pounds
15 pounds - p15 Pounds
uFor small appliances, the technician may use which of the following:
Either a self-contained recovery device or system dependent recovery system
A self-contained recovery device
A system dependent recovery system - pEither a self-contained recovery device or system dependent recovery system
recovery equipment manufactured after November 15, 1993 must be capable of recovering ______ of the refrigerant without the compressor operating
90%
70%
80%
60% - p80%
which of the following refrigerants are not required to be recovered as per EPA regulations:
Ammonia,
Sulfur dioxide
Methyl chloride
All the options are correct - pAll the options are correct
uThe sales of CFCs and HCFCs are restricted to the certified technicians: [Show Less]