Magic Chef MCSR-6085W User manual

Please read the following instructions completely before operating this appliance.
INSTRUCTION MANUAL
REFRIGERATOR
MCSR-6085W
MCSR-6085B
MCSR-6085BSS
MCSR-5585W
MCSR-5283W
MCSF-5585BSS

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ATTENTION:
Defrosng—Do not use sharp,pointed objects to remove frost or ice from surfaces of the refrigerator and/or freezer compartment. Doing so could puncture the cooling coil,
causing the unit to lose its ability to maintain cold temperatures and voiding the warranty. See the Care and Cleaning secon for instrucons on defrosng the refrigerator and/or
freezer compartment.

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CONTENTS
Safety instrucon……………………………………………………………………………………………………………………………………………………………………………………………………....…………………………………4
USE OF EXTENSION CORDS………………………………………………………………………………………………………………………………………………………………………………………………………………………………… 4
HOW TO CONNECT ELECTRICITY ………………………………………………………………………………………………………………………………………………………………………………………………………..………4
operaon instrucon ……………………………………………………………………………………………………………………………………………………………………………………………………..…………………………5
Control Sengs…………………………………………………………………………………………………………………………………………………………………………………………………………………………………………… 5
About the refrigerator features…………………………………………………………………………………………………………………………………………………………………….....................................…………… 6
Care and cleaning of the refrigerator ………………………………………………………………………………………………………………………………………………………………………………………………….………6
Care and cleaning of the refrigerator ………………………………………………………………………………………………………………………………………………………………………………………….………………6
Care and cleaning of the refrigerator …………………………………………………………………………………………………………………………………………………………………………………………..........………7
Preparing to install the refrigerator…………………………………………………………………………………………………………………………………………………………………………………………………………… 8
Troubleshoong ps ………………………………………………………………………………………………………………………………………………………………………………………….......………………………………10
Safety precauons……………………………………………………………………………………………………………………………………………………………………………………………………………………………………………12

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geng rid of your old refrigerator, please follow the instrucons below to help prevent
accidents.
Before You Throw Away Your Old Refrigerator or Freezer:
• Take o the doors.
• Leave the shelves in place so
that children may not easily climb inside.
Refrigerants
All refrigeraon products contain refrigerants, which under federal law must be
removed prior to product disposal. If you are geng rid of an old refrigeraon product,
check with the company handling the disposal about what to do.
USE OF EXTENSION CORDS
Because of potenal safety hazards under certain condions, we strongly recommend
against the use of an extension cord.
However, if you must use an extension cord, it is absolutely necessary that it be a CSA
listed, 3-wire grounding type appliance extension cord having a grounding type plug and
outlet and that the electrical rang of the cord be 15 amperes (minimum) and 120 volts.
HOW TO CONNECT ELECTRICITY
Do not, under any circumstances, cut or remove the third
(ground) prong from the power cord. For personal safety,
this appliance must be properly grounded.
• The power cord of this appliance is equipped with a 3-prong (grounding) plug
which mates with a standard 3-prong (grounding) wall outlet to minimize the
possibility of electric shock hazard from this appliance.
• Have the wall outlet and circuit checked by a qualied electrician to make sure the
outlet is properly grounded.
• If you have only a standard 2-prong wall outlet, it is your personal responsibility
and obligaon to have it replaced with a properly grounded 3-prong wall outlet.
• The refrigerator should always be plugged into its own individual electrical outlet
which has a voltage rang that matches the rang plate.
Safety Instrucons
IMPORTANT SAFETY INFORMATION.
READ ALL INSTRUCTIONS BEFORE USING.
Use this appliance only for its intended purpose as described in this Owner’s Manual.
SAFETY PRECAUTIONS
When using electrical appliances, basic safety precauons should be followed, including
the following:
• This refrigerator must be properly
installed and located in accordance with the Installaon Instrucons before it is used.
• Do not allow children to climb,stand or hang on the shelvesin the refrigerator.They
coulddamage the refrigerator andseriously injure themselves.
• Do not store or use gasoline or other ammable vapors and liquids in the vicinity
of this or any other appliance.
• Before replacing a burned-out light bulb, the refrigerator should be unplugged
in order to avoid contact with a live wire lament. (A burned-out light bulb may
break when being replaced.)
• Keep ngers out of the “pinch point” areas; clearances between the doors and
cabinet are necessarily small. Be careful closing doors when children are in the
area.
• Unplug the refrigerator before cleaning and making repairs.
• Turning the temperature control dial to the 0 posion stops cooling but does not
shut o power to the refrigerator.
DANGER! RISK OF CHILD ENTRAPMENT
PROPER DISPOSAL OF THE REFRIGERATOR
Child entrapment and suocaon are not problems of the past. Junked or abandoned
refrigerators are sll dangerous… even if they will sit for “just a few days.” If you are

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Operang Instrucons
About the control on the refrigerator.
The control will look like the one above.
The arrow indicates the seng selected.
Control Sengs
The temperature control maintains the temperature in the refrigerator. 1 is the warmest
seng; higher numbers are colder sengs with 7 being the coldest seng. The typical
seng is 3.
Allow 24 hours for the refrigerator to reach the desired temperature. If you want a
colder or warmer temperature, move the dial one seng at a me. Moving the control
to O stops cooling but does not turn o the power to the refrigerator. Seng the control
too high may cause freezing in the refrigerator depending on the room temperature.
How To Test Temperatures
Use the milk test. Place a container of milk on a shelf and check it a day later. If the milk is
too warm or too cold, adjust the temperature control. Aer changing the control, allow
• This provides the best performance and also prevents overloading house wiring
circuits which could cause a re hazard from overheated wires.
• Never unplug your refrigerator by pulling on the power cord. Always grip plug
rmly and pull straight out from the outlet.
• Repair or replace immediately all power cords that have become frayed or
otherwise damaged. Do not use a cord that shows cracks or abrasion damage
along its length or at either end.
• When moving the refrigerator away from the wall, be careful not to roll over or
damage the power cord.
IMPORTANT SAFETY INFORMATION.
READ ALL INSTRUCTIONS BEFORE USING.
WARNING!
• USE OF ADAPTER PLUGS
ADAPTER PLUGS ARE NOT LEGAL IN CANADA.
• READ AND FOLLOW THIS SAFETY INFORMATION CAREFULLY.
SAVE THESE INSTRUCTIONS

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• The top shelf is best
for storing fruits and
vegetables.
• The boom shelf is
best for storing
beverages, deli meats
and cheeses.
Care and cleaning of the refrigerator.
Cleaning the Outside
Keep the outside clean. Wipe with a clean cloth lightly dampened with kitchen appliance
wax or mild liquid dish detergent. Dry and polish with a clean, so cloth. Do not wipe
the refrigerator with a soiled dish cloth or wet towel. These may leave a residue that
can erode the paint. Do not use scouring pads, powdered cleaners, bleach or cleaners
containing bleach because these products can scratch and weaken the paint nish.
Protect the paint nish. The nish on the outside of the refrigerator is a high quality,
baked-on paint nish. With proper care, it willstay new-looking and rust-free for years.
Apply a coat of kitchen/ appliance wax when the refrigerator is new, and then at least
twice a year.
Cleaning the Inside
To help prevent odors, leave an open box of baking soda in the refrigerator. Unplug the
refrigerator before cleaning. If this is not praccal, wring excess moisture out of sponge
or cloth when cleaning around the control. Use warm water and baking soda soluon
–about a tablespoon (15 ml) of baking soda to a quart (1 liter) of water. This both cleans
and neutralizes odors. Rinse and wipe dry. Other parts of the refrigerator–including door
gaskets, fruit and vegetable drawers, and all plasc parts–can be cleaned the same way.
Do not wash any plasc refrigerator parts in the dishwasher.
24 hours for the refrigerator to reach the temperature you have set.
About the refrigerator features.
Shelves
To remove a shelf, li up the back slightly and pull forward.
Freezer Compartment
This compartment is designed for producon of ice cubes and shorerm storage of
some commercially frozen foods.
Door Shelves
Shelves on the door provide convenient storage for frequently used items. The fresh
food doors are capable of storing large boles for your convenience.
Fresh Food Storage Zones
For best results follow
the recommended
storage zones:

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NOTE: If ice buildup is very thick, it may keep the ice tray
compartment door from opening or closing completely. Don’t try to
force it open; aer defrosng, the door will open and close easily.
Care and cleaning of the refrigerator.
Preparing for Vacaon
For long vacaons or absences, remove food and unplug the refrigerator. Move the
control to the 0 posion, and clean the interior with a baking soda soluon of one
tablespoon (15 ml) of baking soda to one quart (1 liter) of water. Leave the door open.
Preparing to Move
Secure all loose items such as shelves and ice trays by taping them securely in place to
prevent damage. Be sure the refrigerator stays in an upright posion during moving.
Replacing the Light Bulb
Unplug the refrigerator before replacing a burned-out bulb. Seng the controls to 0
does not remove power to the light circuit.
The light bulb is located behind the temperature control housing and is visible through
the clear lens. Using a Philips screwdriver, unscrew the lens and pull horizontally unl
the lens is removed. Gently unscrew the light bulb and replace with a bulb of 15 was
or less.
Care and cleaning of the refrigerator.
Defrosng
Defrost whenever frost on the wall of the Freezer compartment becomes 164) “4/
mm) thick. Never use a sharp or metallic instrument to remove frost as it may damage
the cooling coils. (A punctured cooling coil will cause serious problems and void the
warranty.) We recommend using a plasc scraper. Do not use any electrical device in
defrosng your refrigerator.
To defrost:
• Remove foods from the Freezer and Fresh Food compartments.
• Set the temperature control dial to 0.
• Place a towel in the Freezer Compartment to soak up water.
Defrosng usually takes a few hours. To defrost faster, keep the door open. Also using a
hair dryer on the low seng may speed defrosng.
Warning: using excessive heat may damage the plasc liner!
Do not pour water into the Freezer or Fresh Food compartments.
Aer defrosng:
• Empty water from the drip tray. Wash the tray with warm water.
• Wipe the Freezer and Fresh Food compartments with a damp cloth.
• Turn the temperature control to the desired seng and return food
to the refrigerator.

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Preparing to install the refrigerator.
Door Reversal
1. Remove the two screws from under the screw caps located on the top cover.
2. Remove the two screws from the back of the top cover and remove top cover.
3. Remove the top hinge by removing the two screws, as shown.
4. Remove the freezer door by liing o of the middle hinge.
5. Remove the J-shaped hinge support on the boom of the freezer door.
6. Install new J-shaped hinge support on the opposite side of the freezer door boom.
The new J-shaped hinge support and mounng screw are located in a zip lock bag that
is shipped with the refrigerator.
Installaon Instrucons
Preparing to install the refrigerator.
Read these instrucons completely and carefully.
Refrigerator Locaon
• Do not install the refrigerator where the temperature will go below 50°F (10°C)
because it will not run oen enough to maintain proper temperatures.
• Install it on a oor strong enough to support it fully loaded.
• Do not install it closer than 5”(13 cm) next to a range.
• Do not install it in a recessed area.
• Do not build in the refrigerator.
Clearances
Allow the following clearances for ease of installaon and proper
air circulaon.
Sides 113) “2/ mm)
Top 2” (51 mm)
Back 2” (51 mm)*
*From the rear cabinet surface to the wall
Leveling Legs (on some models)
Adjustable legs at the front corners of the refrigerator should be set so the refrigerator
is rmly posioned on the oor and the front is raised just enough that the door
closes easily when opened about halfway. To adjust the leveling legs, turn the legs
counterclockwise to lower the refrigerator, clockwise toraise it.

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7. Remove the two screws from the top cover support. Install top cover support on the
opposite side of refrigerator.
8. Remove the middle hinge. Remove plug buons from the opposite side of refrigerator.
Re-install plug buons in the original hinge mounng holes. Door Reversal (cont.)
9. Remove the fresh food door by liing o the boom hinge.
10. Remove both adjustable legs.
11. Remove the boom hinge and re-install on the opposite side of the refrigerator.
12. Re-install the adjustable legs. Insure that the smaller leg is on the same side as the
boom hinge.
13. Place the fresh food door on the boom hinge.
14. Place the boom peg of the middle hinge in the fresh food door. Re-install middle
hinge. Make sure the fresh food door is aligned with the refrigerator cabinet before
ghtening screws.
15. Place the freezer door on the top peg of the middle hinge. Place the top hinge peg
into the freezer door. Re-install top hinge. Make sure the freezer door is aligned with the
refrigerator cabinet before ghtening screws.
16. Re-install the top cover with four screws.
17. Replace the screw caps.

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Troubleshoong ps.
Save me and money!

Safety precauons

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Safety precauons

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Funcon Schedule
● Energy eciency
● Micro foam technology
● Low noise operaon
● Thick insulaon for energy eciency
System Flow Chart
1. Schemac diagram of System Flow Chart
2 Brief Descripon of System Flow Chart
All models are a direct cooling single-system refrigerator or freezer. When the
refrigerator or freezer is just powered o n, the re f r ig e r a n t o ws in the sequence:
1->2->3->4->5>1

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Maintenance Service and Trouble Shoong
1. No cooling
Circuit Diagram
1 Schemac Circuit Diagram
Brief Descripon of Control Principle
A mechan ic a l t y p e o f a l l th e c o n tr o l is generally adopted..
The thermostat directly controls the start and stop of compressor, and
hence the refrigerator temperature.

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3 Cooling capacity is insucient2 The compressor doesn›t stop

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5 Normal Phenomena—Not Troubles for Refrigerators
In a domesc refrigerator, there is not only a complicated electric controlsystem, but
also a refrigerang system that is dicult to discern whether it is in a good working
condion. Both the systems are related and aect each other. If a certain part of a
refrigerator works abnormally .Its refrigerang eciency will decrease ,operaon
properes will become unstable ,or even it cannot be used normally for those serious
cases. Refrigerators are generally of larger volume ,once troubles appear ,to send
them to a service department is really a tough thing ,if such is the case ,the user will
always be in suspense ,somemes ,normal phenomena will be erroneously regarded as
troubles .Therefore ,before we deal with the topics of frequently occurring troubles of
refrigerators and their remedies, we should rstly give a brief account of some normal
phenomena which are not troubles .In case any one of such phenomena occurs ,there is
no need to worry about it ,and the user can use it at total ease . 1).When the compressor
of a refrigerator has just stopped running ,a rumbling sound can be heard from inside its
evaporator .This is a sound caused by the owing of refrigerant in the evaporator tubing
.Because the pressure dierence is sll greater aer the compressor has just stopped
running ,the refrigerant will ow for a certain me , therefore ,this sound is a normal
phenomenon.
2).A click sound can oen be heard from the refrigerator .This is a
normal sound produced by the pull-in or release of the armature of a current deadweight
start relay when starng the compressor .The compressor motor will produce a slight
and uniform sound while it is running .This sound is not easy to be heard in the dayme
,but of course it can be heard disnctly at night.
3).The compressor consists of an electric motor and a compressing apparatus .During
its normal operao ,the motor›s stator core and windings will rise to a temperature
in the range of 100°C~110°C ,and the temperature of the piston and cylinder of the
compressing mechanism can also reach as above 100°C due to the heat produced when
compressing refrigerant .Most of the heat radiates to the air through the compressor
casing ,therefore ,its casing is generally at a temperature between 85°C ~90°C ,it is very
hot ,parcularly in summer when the ambient temperature is higher .All these are
normal phenomena .
4 The compressor doesn›t work

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Three Essenals for Checkup
1) Look
a) Check the tubing of refrigerang system for cracks and various welding points for
leaks ;if leakage occurs ,an oil stain can be seen denitely .
b) Check the sucon and exhaust pressure values (high pressure and low pressure) of
compressor to see whether they are normal .
c) Check the condions of frost aached to its evaporator and gas return tube .It is
abnormal if frost has formed on part of the evaporator orthere is no frost aached to it .
d) Pay aenon to the speed of temperature drop inside freezer compartment .It is
abnormal if the speed of temperature drop is obviously slower than the corresponding
normal speed .
e) Check the environment to see whether it is suitable for placing a refrigerator .
f)Check refrigerator door seal, case ,table surface and heat insulaon layer .
g) Look at the main control board to ascertain if various indicaon states are normal.
2) Listen
a) Listen to the noises produced when the compressor is runningHums from a fully
enclosed aggregate unit is the sound caused by overload indicang that the motor
cannot be started normally ,meanwhile ,a claering sound can be heard from inside the
start relay ,which is producedbecause the start contacts cannot be released normally
.A whistling sound is caused by the high pressure gas owing out of the crack of the
pressuretube inside the compressor ,and clucks are the sound of striking aer the
suspended spring inside the compressor has broken . During the normal operaon of
compressor, a slight and uniform hum sound due to undulaon of electric current can
be heard generally ,this is a normal phenomenon .However ,if it sounds like «tong ,tong
¼»,i.e., an impact sound inside the compressor ,this means that a large quanty of wet
vapour of refrigerant or refrigerang oil has come into the compressor cylinder ;if it
sounds like «dang ,dang¼», a striking sound of metal parts inside the compressor ,this
means that some moving parts have loosened (note to dierenate this sound from
those formed during starng or stopping the compressor).
4).For the direct cooling refrigerator ,a kind of irregular crack sound can be oen heard
when the compressor is running for a certain period of me or has just stopped its
running .This sound is caused by the stress relief due to expansion and contracon when
temperature changes ,and will not aect the normal applicaon of refrigerator .
6 Common Troubles in Refrigerators and Their Remedies
Causes for troubles occurring in refrigerators are closely related to the quality of
components and workmanship in assembling by manufacturers
as whether refrigerators are properly used and maintained .The parameters generally
used to express the working condions of a refrigerator include
the temperature inside the refrigerator ,operaon rate ,electric power consumpon
,noise level ,and other funconal indexes .If any one of these parameters is beyond its
permissible range ,this indicates that there is a fault or trouble in the refrigerator . During
the whole service life of a refrigerator ,the probability of troubles occurring within a
union me is called its failure rate .Making a comparison between the control circuit
system of a refrigerator and its refrigerang system ,we can nd that the failure rate
of the former is higher ,and that of the thermostat is the highest . In troubleshoong
,the rst thing you must do is to determine where the trouble comes from --- the
control system or the refrigerang system .There is general no trouble indicang
instrument mountedon the dome sc refrigerator ,locaons and natures of troubles
should be determined according to their respecve features ,therefore ,experience in
servicing is very important to troubleshoong. Service technicians with rich experience
can correctly locate them and take reasonable remedy measures based on their
comprehensive analysis of trouble characteriscs as well asoperang condions for
various kinds of refrigerators .

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and dew condensaon may appear for a very short me period when just starng
the machine ,this is a normal phenomenon ). Because a refrigerator is a combinaon
of several components ,they are related and have inuence on each other In case an
abnormal phenomenon has been found through the above-menoned checkups ,you
need not to make a hasty conclusion based on only one abnormal phenomenon .It is
advisable to nd out two or more abnormal phenomenon ,or conduct troubleshoong
comprehensively with the aid of instruments or other ways, because several kinds of
troubles may share a common abnormal phenomenon, and two or more abnormal
phenomena may occur simultaneously due to a certain trouble .With this method ,you
can reject some suspicious troubles and nally make a correct judgment .
7 Analysis of Troubles and Troubleshoong
A. Poor Refrigerang Eect The so-called «poor refrigerang eect « refers to the
fact that the refrigerator can operate and refrigerator normally ,but the temperature
in the refrigerator cannot drop to the prescribed value under the spulated working
condions .In view of there are many causes for this phenomenon ,we are going to
discuss and analyze it in the following 7 aspects :
1) Leakage of refrigerant
Analysis of Trouble The leakage of refrigerant in the system will result in an insucient
refrigerang capacity ,the resulng phenomena are its lower gas sucon pressure and
exhaust pressure as well as higher exhaust gas temperature.The exhaust tube feels
rather hot ,and a connuous gas owing sound louder than usual can be heard at the
outlet of the capillary ,and no frost or a smaller quanty of loose frost appears on the
evaporator .Aer shut down ,the balance pressure in the system is usually lower than
the saturaon pressure corresponding to the same ambient temperature . Remedy In
case there is leakage of refrigerant from the system ,do not hurry to recharge it with
refrigerant ,manage to nd out leak points immediately ,and make a note of from where
it leaks ---welding points and parts .Aer having them repaired ,recharge refrigerant .
There are so surfaces in a refrigerator ,accordingly ,quite a lot potenal leak points do
exist in the system .In troubleshoong ,pay aenon to those parts that are liable to
leak ,check main connecon points for oil seepage and tubing for cracks .If there is no
b) Listen to the sound caused by the owing of gas in the evaporator Open the refrigerator
door while the compressor is in operaon, incline your ear and listen aenvely the gas
ow sound inside the evaporator .If it sounds like gentle whistling accompanied by a
sound similar to water owing ,this is the sound produced by the normal circulaon
of refrigerant within the evaporator .In case only the gas owing sound can be heard
and there is no water owing sound ,this indicates that the refrigerant has already
percolated .If neither the owing sound nor the gas sounds from the evaporator can be
heard ,this means that the lter or capillary has been clogged .
3)Touch and Feel
a) Feel the compressor when running ,its temperature should be generally less than
90°C in the normal state (it may exceed 90°C in case of running for a longer period of
me ).
b) Aer the compressor has operated normally for 5~10 minutes, ouch and feel the
condenser ,the temperature of its upper part should be higher than that of its lower
part (or its right part is hoer than its le part ,depending on the type of condenser coil
),this indicates that the refrigerant is circulang . If the condenser is not hot, this means
the leakage of refrigerant .In case the condenser radiates heat for only several minutes
and then cools down ,this means that the lter and capillary have been clogged .As for
the forced air cooling condenser ,hot air will be blown out of it; this means that the
system is out of order .
c) Feel the lter›s temperature .During the normal operaon of refrigerang system
,the temperature on the lter›s surface should be a lile higher than the ambient
temperature ;if you touch it with your hand ,you will have a sense of slight heat .In case
dew condensaon appears due to the fact that its temperature is obviously lower than
the ambient temperature ,this means that most meshes of its screen has been clogged
,resulng in an obstructed owing of refrigerant ,thus causing a drop in temperature
due to throling .
d) Feel the temperature of exhaust gas from the refrigerang system. the exhaust gas
should be very hot and this is the normal working state. For those refrigerator with
enclosed type of compressor refrigerang system, no frost or dew drop will from on
the gas sucon tube ,otherwise ,there is something wrong in the system (Frosng

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recharge the system with refrigerant .
4) Low eciency of compressor
Analysis of Trouble Low eciency of a refrigerang compressor refers to the actual
reducon of gas discharge capacity ,and hence the corresponding reducon of
refrigerang capacity ,under the condion that the refrigerant in the system is
unchanged .This phenomenon occurs mostly when the compressor has been used for
quite a long me ,its moving parts have worn to a considerable degree ,t clearance
between various parts have increased and sealing property of its gas valve has
deteriorated ,resulng in an decrease in its actual gas discharge capacity . Methods of
Judgment Measure the high and low pressures with pressure gauges to see whether
they are normal .If an abnormal sound comes from the compressor or the temperature
of its causing is too high ,Cut the discharge port open and operate the compressor ,feel
it if there is pressure at the discharge port with your nger (For a normal compressor ,its
discharge port is dicult to be blocked with your nger if you just apply a lile eort).
5) Too thick frost layer formed on evaporator
Analysis of Trouble If a direct cooling refrigerator is to be used for a prolonged period
of me ,be sure to defrost its evaporator regularly ;if you fail to do so ,the frost layer on
the evaporator tubing will become thicker and thicker .Heat conducon will be severely
aected when the whole tubing is wrapped with a transparent ice layer ,and nally the
temperature in the refrigerator cannot drop down to the prescribed range . Remedy
Turn the refrigerator o ,and make preparaons for defrosng ,open the refrigerator
door to let the air come in ,or use a fan to speed up air owing so as to shorten the me
needed for defrosng .Never strike the frost layer with any iron tools or wood sck in
order to avoid damage to the evaporator tubing .
6) Refrigerang oil le in evaporator tubing
Analysis of Trouble During the process of refrigerang cycles ,a lile refrigerang oil
may remain in the evaporator tubing ,and aer a longer me of operaon ,if there is
considerable refrigerang oil le in the evaporator ,the heat conducon eect will be
severer leak point ,charge the system with nitrogen and detect leak points with the
commonly adopted method ,repair them ,evacuate ,charge the system with refrigerant
,and then turn on the refrigerator to make a test run .
2) Too much refrigerant charged into the system
Analysis of Trouble
a) In case the amount of refrigerant charged into the system exceeds its nominal
capacity ,the superuous refrigerant will of course take some space of the evaporator
,thus reducing its heat-dissipaon area and hencethe refrigerang eciency of the
system .The abnormal phenomena caused by this reason are as follows :the gas sucon
and exhaust pressures are generally higher than their respecve normal values ,the
temperature of its condenser is higher and the electric current of the compressor rises
,loose frost forms on the evaporator ,the refrigerator temperature drops slowly ,and
frost appears on the gas return tube .
b) In case excessive refrigerant has been charged ,the liquid refrigerant that cannot
evaporates in the evaporator will return to the compressor ,and thus a phenomenon
of «liquid striking» will occur .The liquid refrigerant evaporates and eervesces as
soon as it ows into the refrigerang oil at the boom of compressor .If the condion
is severe ,foams will ll all over inside the compressor housing and be sucked by the
piston ,causing damage to the components of compressor . Remedy According to the
operang procedures ,it is mandatory to turn the machine o ,and several minutes later
,open the refrigerant charging tube and et the refrigerant escape from it ,replace the dry
lter ,recharge refrigerant aer evacuang ,and then seal the charging port .
3) There is air le in the refrigerang system
Analysis of Trouble Residual air in the refrigerang system will reduce its refrigerang
eciency .The prominent phenomena are the increase in its gas sucon and exhaust
pressures (however ,the gas exhaust pressure will not exceed its rated value ),obvious
increase in temperature in the segment from the compressor outlet to the condenser
inlet .Because there is air in the system ,both the gas exhaust pressure and temperature
will rise ,and moreover ,the gas owing sound is intermient and obviously louder .
Remedy Aer shut down for several minutes ,open the tubing ,evacuate it and then

20
1) All refrigerant in the system has leaked out Analysis of Trouble Leak points in the
refrigerang system have not been found and repaired mely ,thus resulng in the
total escape of refrigerant .There are two kinds of leakage :I) slow leakage for instance
,when we want to use a refrigerator that has been put out of quite a long me ,we
nd the leakage of refrigerant ,or in the course of its operaon ,we have found that
the refrigerator is gradually becoming not so cold and nally no refrigerang cab be
achieved ; ii) fast leakage in that case ,all the refrigerant will escape swily due to abrupt
rupture of system tubing . Symptoms of total leakage of refrigerant are mainly asfollows
: the compressor can be started easily (if there is no damage to the compressor parts)
and its operang current becomes low ,its gas sucon pressure is high and discharge
pressure is lower ,the gas discharge tube feels rather cold ,no sound of gas erupon
from the liquid in the evaporator can be heard ,and no will gush out of the process
tube if you cut it open aer shutdown . Remedy Check the whole machine , parcularly
those locaons which are liable to leak .Aer leak points have been found ,repair them
or replace them with new parts according to specic circumstances ,then evacuate the
system and nally charge refrigerant.
2) Refrigerang system has been clogged
a) Clogged with Ice
Analysis of Trouble The dryness treatment for the major parts in the refrigerang system
has been performed improperly, the eect of air purging for the whole system is not
good ,or the water content in the refrigerant is out of standard ,all these will cause the
expansion valve to be clogged with ice .The symptom for this trouble are as follows
:the refrigerator somemes can refrigerate and somemes cannot :the refrigerator
compartment works normally at the beginning ,but aer working for a certain period of
me ,frosng begins at the clogged posion ,evaporaon temperature reaches below
0°C , water will accumulate at the narrow part of the capillary and clog it gradually ,then
frost begins to melt at the evaporator ,no gas owing sound can be heard ,and the gas
sucon pressure assumes a state of vacuum .Note that these phenomena will appear
intermiently ; somemes ,the refrigerator works well ,and somemes not well .In order
to determine whether it is clogged with ice ,heat the suspicious points with hot water to
make ice melt ,and aer a while if a gas owing sound resulng from an abrupt gush is
heard and the gas sucon pressure rises as well ,itcan be conrmed that the trouble is
severely aected ,thus causing a poor refrigerang eect . Remedy It is quite dicult to
determine whether this trouble is caused by the refrigerang oil le in the evaporator
tubing ,because this kind of phenomenon and other several trouble are tends to be
confused .Generally speaking ,you can make a judgment based on the frost formed on
the evaporator .If the frost does not cover the evaporator , and moreover ,it is loosely
formed ,you can make a judgment that the deterioraon of refrigerang eect isdue
to the accumulaon of refrigerang oil le in the evaporator tubing in case no other
troubles have been found . To clear o refrigerang oil le in the evaporator ,dismantle
the evaporator ,purge it thoroughly and then dry it .In case it is dicult to dismantle it
,charge refrigerant from the evaporator inlet to wash it several mes ,then purge and
dry it with nitrogen .
7) Flowing obstructed in refrigerang system
Analysis of Trouble Because the refrigerang system was originally not purged
thoroughly ,some of the lter screen meshes have been clogged by dirt accumulated
in the lter aer using it for a certain me of period ,thus resulng in a decrease in ow
rate ,and hence a poorer refrigerang eect . The abnormal phenomena caused by this
kind of slight clogging in the system are as follows: the gas discharge pressure is lower
,the temperature of discharged gas drops down ,the posion clogged has a temperature
lower than that in normal condions ,and for a severe clogging ,even dew condensaon
as frosng may appear . Remedy Purge the tubing ,and aer replacing the dry lter with
a new one or clearing it thoroughly ,recharge the system with refrigerant and seal the
charging port .
B. No Refrigerang
The phenomenon that the compressor runs normally ,but no frost (or only a lile frost
) appears on the evaporator ,and the refrigerator temperature does not drop down
is called «no refrigerang». There are many causes for this trouble and it is relavely
complicated , too . In servicing ,special aenon to nding direct causes for this
phenomenon .Three main potenal causes for this trouble are analyzed
below :