test appliance

Question 1

gasket

Answer 1

<p>Seals door</p>

Question 2

gasket

Answer 2

<p>mechanical seal which fills the space between two or more mating surfaces usually to prevent leakage while under compression</p>

Question 3

gasket

Answer 3

<p>Clean seals & gasket every 6 months w/ toothbrush, baking soda (or soap) + warm water</p>

Question 4

compressor

Answer 4

<p>mechanical device that compresses a fluid (and increases it's temperature)</p>

Question 5

compression

Answer 5

<p>application of an inward force to different points on a material/structure, balanced w/ no net sum or torque, so as to reduce its size in one or more directions</p>

Question 6

refrigerator

Answer 6

<ol><li>Both<ul><li>vapor-compression cycle</li><li>auto-refrigeration from flash evaporation</li><li>sounds (event)</li></ul></li></ol>

Question 7

vapor-compression cycle

Answer 7

<ol><li>Refrigerant enters compressor as a low pressure, low temperature gas</li><li>Compressor compresses and heats refrigerant, both<ul><li>into superheated gas</li><li>flowing into outside condenser coils</li></ul></li><li>Condenser coils and cooler kitchen condense and cools refrigerant</li><li>Condensed refrigerant flows into coils inside fridge/freezer</li><li>Expansion valve regulates the flow of refrigerant into evaporator to cause flash evaporation and auto-refrigeration</li><li>Vaporization:<ul><li>Fan blows hair from warmer enclosed refrigerator across evaporator coils</li><li>Evaporator coils uses warmer air to heat and vaporize refrigerant</li><li>Both<ul><li>Vaporized refrigerant enters compressor</li><li>Resulting cooler air exits</li></ul></li></ul></li><li>Repeat</li></ol>

Question 8

auto-refrigeration

Answer 8

<p>lower than enclosed refrigerated space temperature resulting from flash evaporation</p>

Question 9

clean

Answer 9

<p></p>

Question 10

filter

Answer 10

<p>Every 6 months ... b/c for icemaker & water dispenser</p>

<ul><li>Replace water filter</li></ul>

Question 11

freezer

Answer 11

<p>refrigerator that maintains a temperature below the freezing point of water</p>

Question 12

refrigerator

Answer 12

<p>-</p>

Question 13

enclosed space

Answer 13

<ol><li>All<ul><li>Check temperature ... b/c insufficiently cold will produce food safety issues, too cold puts stress on compressor and other components increasing their chance for failure<ul><li>Ensure refrigerator is in [37-40] deg Fahrenheit</li><li>Ensure freezer at 0 deg Fahrenheit</li></ul></li><li>Ensure fridge & freezer has plenty of items, using water jugs to fill extra space b/c increases efficiency</li><li>Ensure containers are secure b/c minimizes moisture</li></ul></li></ol>

Question 14

flash evaporation

Answer 14

<p>immediate evaporation of part of a liquid accompanied by auto-refrigeration</p>

Question 15

defrosting

Answer 15

<p>removal of frost and ice</p>

Question 16

defrost

Answer 16

<p>... b/c improves refrigerator performance</p>

<ul><li>Consume/discard food that can either spoil easily or is difficult to refreeze</li><li>Turn off / unplug refrigerator</li><li>Open door</li><li>Remove all food and store w/ ice packs in cool place</li><li>Leave door open</li><li>Take out all removable shelves and drawers</li><li>Cover w/ towels<ul><li>front</li><li>side</li><li>bottom shelf</li></ul></li></ul>

<p>(Optional) Place 2 x boiling water in the ... b/c steam helps melt ice</p>

<ul><li>fridge</li><li>freezer</li></ul>

<p>(Optional) Dab rubbing alcohol onto the ice<br></br>(Optional) Use box fan or hair dryer b/c<br></br>(Optional) Wet/dry alternating between blowing to melt and vacuum to remove water<br></br>Clean refrigerator</p>

Question 17

thawing

Answer 17

<p>-</p>

Question 18

compressor

Answer 18

<p>-</p>

Question 19

refrigerant

Answer 19

<p>fluid that undergoes repeated liquid to gas phase transition</p>

Question 20

condenser coils

Answer 20

<p>-</p>

Question 21

condenser coil

Answer 21

<p>Every 3 months ... b/c increases efficiency<br></br>Unplug refrigerator<br></br>Vacuum coils w/ brush attachment</p>

Question 22

condenser

Answer 22

<p>heat exchanger that cools and condense a gaseous substance w/ heat released into surround environment</p>

Question 23

condensation

Answer 23

<p>phase transition of matter from a vapor to a liquid</p>

Question 24

expansion valve

Answer 24

<p>restricts the flow of cooling refrigerant from the condenser to the evaporator causing abrupt pressure and temperature drop</p>

Question 25

fan

Answer 25

<p>-</p>

Question 26

vaporization

Answer 26

<p>phase transition of matter from a liquid to vapor </p>

Question 27

heat exchanger

Answer 27

<p>transfers heat between 2+ fluids</p>

Question 28

heat pump

Answer 28

<p>a device that transfers thermal energy from one space to a another space using the refrigeration cycle</p>

Question 29

excess moisture

Answer 29

<ol><li>Remove excess moisture</li><li>Establish/ensure airtight containers on all items</li></ol>

Question 30

frost

Answer 30

<ol><li>defrost (user)</li></ol>

Question 31

power outage

Answer 31

<p>Avoid opening, relying on food for pantry b/c will maintain temperature for 24-48 hours</p>

Question 32

boiling/gurgling/knocking

Answer 32

<p>refrigerant circulation</p>

Question 33

fan

Answer 33

<p>-</p>

Question 34

sounds

Answer 34

<p>refrigerant circulation</p>

Question 35

fan

Answer 35

<p>-</p>