PRACTICE TEST
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| To obtain an accurate vacuum readings during system evacuation, the system vacuum gauge should be located: | show 🗑
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| When moisture exists in an operating system, which of the following is the most likely occur? | show 🗑
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| show | 1)The size of the equipment being evacuated 2)The ambient temperature 3)The amount of moisture in the system
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| A system is dehydrated to: | show 🗑
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| show | dehydration
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| When evacuating a sytsem, the hoses should be: | show 🗑
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| Measuring the system's final vacuum is always with: | show 🗑
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| Refrigerant vapors or mist should not be inhaled because: | show 🗑
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| A refillable refrigerant cylinder must never be filled to more than _____ of its capacity by weight: | show 🗑
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| show | 1) free of rust and damage 2) color coded to indicate the contents 3) secure
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| Which safety precautions(s) should always be followed: | show 🗑
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| When using recovery unit, the fill level of the recovery tank can be controlled by: | show 🗑
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| show | There is a relief valve in the downstream line from the pressure regulator
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| show | A measure of the ability of CFCs' and HCFCs' to destroy ozone
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| An example of an HCFC refrigerant is: | show 🗑
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| show | attach DOT classification tags
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| show | a refrigerant cylinder which is being returned for reclaiming
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| show | 1) lose their EPA certification 2) be fined 3) be required to appear in Federal court
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| The type of oil that is most commonly used in stationary refrigeration applications with HFC-134a refrigerant is: | show 🗑
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| In a vapor compression refrigeration system, cooling occurs when: | show 🗑
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| show | recycling
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| show | Electronic or Ultrasonic tester
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| show | the system may be leaking
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| We dealing with small systems, how many different refrigerants may be recovered into the same cylinder? | show 🗑
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| show | it is the technician's responsibility to comply with any future changes in the law
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| show | The EPA certification has no expiration date
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| show | 0
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| show | 1) recover 80% of the refrigerant in an appliance's compressor is inoperative. 2) recover 90% of the refrigerant in an appliance if the appliance's compressor is operational
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| Technicians with a Type I small appliance certification are certified to recover refrigerant during the maintenance, service or repair of: | show 🗑
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| A Very-High-Pressure appliance is one that uses a refrigerant with a liquid phase saturation pressure above 305 psia at 104F. This definition includes but is not limited to appliances using which of the refrigerants listed below: | show 🗑
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| show | restricted to technicians who are EPA certified in refrigerant recovery
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| For which of the following refrigeration systems/appliances would it be permissible to use a passive recovery device for refrigerant recovery? | show 🗑
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| EPA regulations require the capture of at least 80% of the refrigerant from a small appliance with a non-operating compressor if the technician is using: | show 🗑
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| show | only nitrogen vapor should be used
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| A recovery cylinder which is half full of recovered R-22 at normal room temperature (about 75F), in the absence of non-condensables, will be pressurized to: | show 🗑
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| Small amounts of refrigerant have no odor, therefore if a pungent odor is detected during a system recovery and/or repair: | show 🗑
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| show | 1) refuse to process the refrigerant and return it 2) agree to destroy the refrigerant, but typically a substantial fee is charged for the destruction
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| When ever nitrogen is used to pressurize or blow debris out of the system, the nitrogen: | show 🗑
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| When R-500 is recovered from an appliance, it: | show 🗑
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| show | be only used as a recovery device in combination with a non-pressurized container
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| show | 95 psig
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| After installing and opening a piercing access valve, if the system pressure is ____ do not begin the recovery procedure | show 🗑
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| When using a passive-dependent recovery process, you should access both the high and low side of the system for the refrigerant recovery if __________. | show 🗑
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| A refrigerant that can be used as a direct service "drop-in" substitute for R-22 in a small appliance is: | show 🗑
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| When transporting refrigerants, DOT (Department of Transportation) Regulation number 49 CFR requires ____________ to be recorded on the shipping papers for hazard class 2.2, Nonflammable compressed Gases? | show 🗑
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| show | vacate and ventilate the spill area
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| Large spills of refrigerants can cause suffocation because: | show 🗑
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| show | 1) inspect the schraeder valve core for bends and breakage 2) replace any damaged schraeder valve core to prevent leakage 3) can the schraeder ports to prevent accidental depression of the valve core
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| If R-12 or R-22 are exposed to high temperature, (from open flames or glowing hot metal surfaces for example), these refrigerant can decompose to form: | show 🗑
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You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
toolegit