Refrigertion Review
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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| Which Which of the following terms represents the form of heat removed from the refrigerant in the condenser of a refrigeration system? Pg1/L22 | show 🗑
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| show | Phosgene gas.
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| show | Freeze on the expansion valve seat and reduce the flow of liquid refrigerant
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| Rigid refrigeration system copper tubing is best cut with a ____? Lesson 2 /pg16 | show 🗑
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| If a refrigeration compressor was short cycling on the low pressure cutout switch, the cause might be that the __________________________? Pg 39/ L22 | show 🗑
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| If a refrigeration compressor is running continuously without lowering the temperature in the refrigerated space, the trouble may be. Pg40 / L22 | show 🗑
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| The high pressure cutout switch will shut down the compressor in a refrigeration system if there is __________________________? Pg 40/L22 | show 🗑
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| show | Start and stop the compressor at a preset operating pressure.
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| The object identified on the illustration as letter “Q” is : | show 🗑
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| The valve indicated by the letter “L” is the: | show 🗑
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| Which of the following statements concerning the destruction of refrigerant is TRUE? Pg31 L22 | show 🗑
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| show | Deplete the atmospheric ozone layer.
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| When adding refrigerant to the low side of an air conditioning system, it should be added into the _____. Pg 13/L22 | show 🗑
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| The amount of refrigerant in a storage cylinder is measured by ___. Pg14 L22 | show 🗑
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| show | a. Toxic
b. Flammable
c. Explosive
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| An automatically controlled refrigeration compressor will restart with _____. Pg8 /L22 | show 🗑
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| If the refrigeration compressor crankcase is sweating, the cause may be due to ___. Pg 41/L22 | show 🗑
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| When is it necessary to repair a refrigeration system using R-134-A and the system will be open for more than a few minutes, the open ends of the system should be _______ pg 15/ L22 | show 🗑
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| The low pressure side of a refrigeration system is considered to exist from the ___ pg 1/L22 | show 🗑
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| show | Heat or cool one fluid by means of another fluid.
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| The refrigeration system low pressure cutout switch is actuated by_______ pg 8/ L22 | show 🗑
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| When selecting a lubricating oil in a refrigeration compressor, it must______ Pg9/L22 | show 🗑
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| show | The thermal expansion valve.
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| show | Exposed to an open flame or hot surface.
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| show | Should immediately move or be moved to fresh air.
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| Zinc rods are installed in the refrigeration system__________ .pg 3/L22 | show 🗑
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| show | If they will be performing maintenance, service or repair that could reasonably be expected to release Class 1 or Class 2 refrigerants into the atmosphere.
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| What must be done to use leak detection methods on a low pressure refrigeration system? | show 🗑
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| show | Evaporator.
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| R-12 is generally considered to be a safe, nontoxic, non-flammable and non-explosive refrigerant. It can, however, become highly toxic when_____________. Pg29/L22 | show 🗑
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| A refrigeration system contaminated with moisture can be affected by _____. pg 15/L22 | show 🗑
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| Thin wall refrigeration system copper tubing is best cut with a _______Lesson 2 pg 16 | show 🗑
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| The low pressure side of a refrigeration system is considered to exist from the ___________. | show 🗑
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| Refrigeration crankcase sweating is an indication of ___. Pg 41/L22 | show 🗑
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| show | High pressure vapor.
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| show | Gaseous refrigerant.
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| show | The dryer.
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| The area indicated by the letter “U” is: | show 🗑
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| show | a. By potentially increasing cases of non melanoma skin cancer
b. By potentially weakening human immune system
c. By potentially increasing the number of cataract cases
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| Refrigerant that are considered to have no adverse affect on the earth’s stratospheric ozone layer are classified as _______________________.pg 23/ L22 | show 🗑
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| show | Sub-cooling the liquid.
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| Liquid line dehydrators are usually in the refrigeration systems in order to ____. Pg 6/L22 | show 🗑
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| Personnel working with refrigeration systems and subject to exposure of refrigerant should wear_______________. Pg 11/ L22 | show 🗑
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| show | Refrigerating heat.
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| show | Suction side of the compressor.
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| show | Thermal bulb coming loose from the suction line.
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| Foaming of the oil in a refrigeration compressor crankcase is caused by ___. Pg41/L22 | show 🗑
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| A low level of refrigerant in the refrigeration system is indicated by____? Pg 42/L22 | show 🗑
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| show | Decrease the capacity of the coil.
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| show | Low pour point
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| For safe storage, the maximum allowable temperature to which refrigerant bottles should be exposed is______________________? Pg 29/ L22 | show 🗑
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| show | Boiling point that will not be affected by entrained oil.
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| show | Which of the listed reasons could cause frost to form on the suction line of a refrigeration compressor? Pg 46/ L22
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| The tool used to expand and “bell” the ends of small diameter copper tubing is a/an? Pg 17/L2 | show 🗑
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| show | Superheated.
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| show | The expansion valve being opened too wide.
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| show | Suction pressure and coil pressure.
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| A one ton air conditioning system has which of the listed operating characteristics? Pg9/L21 | show 🗑
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| The object identified on the illustration as letter “R” is: | show 🗑
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| The substance passing through the valve at letter “M” is: | show 🗑
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| show | a. Prevent the accumulation of high concentration of refrigerant gas within any area
b. Thoroughly ventilate any low lying areas where refrigerant may displace air
c. Prevent frostbite when tissue is directly contacted by liquid refrigerant
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| show | 3.0 tons.
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| When checking the oil level in a refrigeration compressor, the most accurate reading is obtained______________. Pg 44/ L22 | show 🗑
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| show | Refrigerant superheat.
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| The refrigeration system uses a receiver to ___________________. Pg 4/L22 | show 🗑
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| The thermal expansion valve reacts directly to the__________________. Pg 6/L22 | show 🗑
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| show | Purged with the refrigerant.
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| The object identified on the illustration as the letter “E” is : | show 🗑
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| The area described by the letter “W” is : | show 🗑
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| The purpose of the device at letter “Y” is : | show 🗑
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Created by:
eddangeles
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