Magic Chef MCSR-6085W, MCSR-5585W, MCSR-6085B, MCSR-5283W, MCSF-5585BSS Instruction 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

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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 :

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sucon valve and discharge valve to suck and discharge the refrigerant. If the valve block is broken, the refrigerant can not be discharged, and hence no refrigerang can be achieved. Method for making judgement It is quite dicult to dierenate this trouble from others because they oen have similar symptoms. In repairing, rstly, hear aenvely if there is some abnormal sound coming from the compressor (somemes , the broken pieces of valve block may strike against the cylinder), and feel the compressor casing with your hand to ascertain whether it is too hot, this is also helpful to the troubleshoong; secondly, measure the pressures at the high and low pressure ports of the compressor with pressure gauges, if thegas sucon valve block is broken, the sucon pressure gauge pointer will swing violently and the sucon pressure is very high, whereas when the gas discharge valve block is broken , the discharge pressure gauge pointer will swing drascally and the discharge pressure is very high. In the both cases, stop the compressor at once, and if technique is available, open the cylinder cover and check up the valve block, repair it, or replace it with a new one, C. Sudden stop of Compressor during Its Running The cause of sudden stop of a compressor during its running is mostly that the gas sucon pressure and/or discharge pressure exceed their respecve prescribed ranges, thus making a pressure-operated protecve relay shut o the power to the compressor and stop it. In the following we discuss mainly the reasons for causing excessively high gas discharge pressure and low sucon pressure.

1) Stoppage due to excessively high gas discharge pressure A) Too much refrigerant charged into the system Analysis of Trouble The phenomenon, such as loose frosng and poor refrigerang eect, may occur if excessive refrigerant has been charged into the system. Superuous refrigerant will occupy a certain space of the evaporator, thus reduce its heat dissipang area, and the phenomenon of «liquid striking» may occur, too. Meanwhile, dew or frost condensaon may occur on the gas return tube, and the gas discharge pressure will obviously rise, when it reaches the threshold value, the protecve relay will actuate and shut o the power supply to the compressor. Remedy Open the tubing, re-evacuate and then charge the system with a proper quanty of refrigerant. b) Air le in the system Analysis of Trouble The residual air in the system will circulate together with the refrigerant in the system. The major symptoms caused by this residual

caused by ice clogging . Remedy If there is too much moisture in the refrigerang system, it is advisable to release the refrigerant, purge the tubing with nitrogen, and then charge the system with the ltered refrigerant. However, the commonly adopted method is to connect a lter with moisture absorbers (such as silica-gel, anhydrous calcium chloride) to the refrigerang system so as to lter out the moisture from the system, then replace the lter, evacuate it again and nally charge the system with refrigerant. b) Clogged with dirt in capillary Analysis of Trouble The capillary inlet is a place where coarse-grained dirt or refrigerant oil in the system will tend to sele down and clog it. In case considerable dirt accumulates there, the whole lter screen may be blocked totally, making the refrigerant unable to go through. Clogging with dirt exhibits the same symptoms as that with ice, namely, higher gas sucon pressure, lower temperature of discharged gas, and no gas owing sound from the evaporator. The dierence between the both is as follows: if the clogging is caused by dirt , tapping the suspicious clogged point (generally in the capillary or the connecon joint of the lter) may cause the refrigerant to ow through parally, resulng in some corresponding change, whereas in that case if you heat it with a hot towel, no reacon will happen, no owing sound can be heard, moreover, there is no periodic change. Aer rejecng the possibility of ice clogging, it can be generally considered as the clogging due to dirt . Remedy Dismantle the system, remove the dry lter from it, purge the tubing with nitrogen, install a new lter, then evacuate it and nally charge it with refrigerant. C) Clogging in lter Analysis of Trouble Total clogging of a lter is rarely to occur. This trouble is mostly caused by the paste-like maer formed from the substances lled into the system or other dust aer the refrigerator has been used for a longer me, or by the dirt accumulated gradually inside the lter. Somemes, tapping the lter nay cause a passage for owing, Touching it with your hand, you will feel that it is cooler compared with its temperature in the normal state. Remedy The same as described in the capillary clogging with dirt.

3) Troubles of Compressor

a) Breakage of gas sucon and discharge valve blocks Analysis of Trouble The compressor works by means of the opening and closing of gas

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compressor is generally controlled by a thermostat . When the temperature in the refrigerator reaches its desired value, the thermostat will shut down the compressor automacally. Never take this normal operaon as a trouble, care should be taken to dierenate it from other real troubles in servicing. D. Compressor won ‹t start In case the compressor cannot be started, you must nd out the origins of this trouble through checkup step by step, because probably there are many causes, including those electrical and mechanical.

1) Inspect the power supply to see whether it is connected to the compressor circuit. Analysis of Trouble In case the compressor cannot be started, this will generally exhibit in the power supply circuit, for instance, power failure, poor contact of switch, and blown fuse. Make a comprehensive analysis of these phenomena, ne out its real cause and take correct measures to remove this trouble. Remedy a) Check the input power circuit to see whether where is voltage of the power supply, namely, the circuit which is connected to the knife switch. This can be determined with an avometer or a test pencil. If a blown fuse is found, ascertain and remove its cause, then replace it with a new one of the same specicaons. b) Check the compressor accessories, including its thermal protector and relay. In case the thermal protector is damaged, the compressor cannot be powered on. If the relay is out of order, the motor will not run and hum sound can be heard from it aer the compressor is turned on, in that case, shut it down immediately, otherwise, the motor windings will be burned out in case this condion lasts longer. c) Check the relay contacts and plugs to see if they are perfect and work reliably. Poor contact may cause the motor not running or humming.

2) Check the circuit voltage to see whether it is normal. Analysis of trouble If the circuit voltage is obviously lower than its rated value, it will be dicult to start the motor, and a hum sound can be heard from it. Remedy Measure the voltage with a voltmeter, if it is really too low, give direcons to the user for buying a stabilizer so as to step up the voltage, thus normal operaon can be achieved.

3) Check the thermal relay to see whether its contacts are closed. Analysis of Trouble The contacts of thermal relay somemes may be open due to the leakage of temperature

air is higher gas discharge pressure, higher discharged gas temperature (the gas discharge tubing is considerably hot when you feel it with your hand), and poorer refrigerang eect. Furthermore, the gas discharge pressure will exceed its normal value when the compressor has run for a period not too long, thus making the protecve relay actuate and bring to a stoppage. Remedy Check up how the air has been le in the refrigerang system. Generally, there are two possibilies: one is that the air has been sucked into the system when repairing due to carelessness, or it has not been purged out totally when evacuang the system; the other is that there are leak points at the low pressure end of the refrigerang system. Leak points appear mostly in those low temperature parts or assemblies, because the evaporaon temperature is lower for such low temperature devices, especially at the low pressure end, it is easier for the air goes into the system. Once it has been ascertained that air does exist in the system, you have to open the tubing, re-evacuate it and then charge it with refrigerant.

2) Stoppage due to electric troubles a) Thermostat is out of control Analysis of Trouble In case the thermostat does not work in its good order or its temperature sensor has not been installed properly, frequent stoppage is also likely to occur. Remedy Try to adjust the temperature sensor›s posion unl the compressor can be started and stopped normally. If this cannot be achieved, and the stoppage sll occurs repeatedly, it is most likely that the mechanical parts or contacts are out of order, disassemble the thermostat, make a thorough checkup and repair it. b) Overload of electric motor Analysis of Trouble Probably, too many things have been put into the refrigerator, and hence the thermal load exceeds its refrigerang capacity ; or in case the power supply voltage drops considerably, the current owing through the motor will increase drascally making the thermal protector actuate and the fuse blown , and hence the motor stops running. If the motor is sll running connuously in such a case , its windings will be burned out . Remedy Reduce the thermal load, pay aenon to the variaon in voltage of the power supply. c) Abnormal thermal protecon Analysis of Trouble The compressor current is within its normal range, but the thermal protector actuates repeatedly. Remedy Replace the thermal protector with a new one.

3) Sudden stoppage due to other causes Normal Stoppage Start and stop of the

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and cause the sha to be seized. Copper plang may also result in seizing of sha. b) Seizing of piston This is caused by too small t clearance between the piston and cylinder or expansion due to heat. Judgement of seizing sha and piston: Aer the refrigerator has been powered on, the compressor will not start and run, but a slight hum sound can be heard, and several seconds later, thermal protecve relay will actuate and make the contacts open; this process will occur repeatedly, but the compressor cannot be started. E. Compressor won›t stop Somemes, the compressor will run connuously(for several hours or run without end), If the food placed in the refrigerator is not too much, there may be the following two situaons: i) the refrigerator very low, this means that the control system is probably out of order; ii) the control system works normally, and there are troubles in the refrigerang system or other parts.

1) Temperature is set improperly a) The temperature control knob is set to the «coldest» posion. This posion is to be used for fast freezing or connuous running, its temperature for power o is too low, therefore, the compressor won›t stop and the temperature in the refrigerator becomes lower and lower. b) Inspecon method: check the temperature control knob to see whether it is set in the posion «coldest».

2) Thermostat is malfunconing and makes the compressor running connuously Analysis of Trouble When the thermostat doesn›t work normally, it will make the compressor run connuously, and hence very low temperature will be achieved in the refrigerator. The fault is generally due to the fact that the contacts of the thermostat cannot be released. Remedy Dismantle the thermostat and make a through checkup, if it is totally out of funconing, replace it with a new one.

3) evaporaon temperature is too high in refrigerang system, resulng in lower refrigerang capacity and hence connuous running of compressor Analysis of Trouble Leakage of refrigerant and clogging in a refrigerang system will directly aect its refrigerang capacity. Due to the reducon in its refrigerang capacity, the refrigerator temperature cannot reach its rated value, the thermostat won›t work, thus the compressor runs connuously. When the evaporaon temperature in the system is too high, the temperature sensing agent in the temperature sensor is also hoer, therefore,

sensing agent from the temperature sensor. Remedy Remove the relay cover to check up its contacts, if they are open, this means that the original seng is not properly set or temperature sensing agent has leaked out of the temperature sensor. Try to turn the adjusng stem of this value in the direcon of the lower temperature graduaon, then check the contacts to see whether they are closed. If they are sll not closed, dismantle the temperature sensing disc and then immerse it into warm water to see whether the contacts actuate, if not, it can be preliminarily determine that temperature sensing agent has leaked out, and it must be replaced with a new thermostat.

4) Motor troubles and other electric faults

a) Motor windings have been burned or short-circuited between turns Analysis of Trouble When motor windings have been burned or short-circuited between turns, the fuse will be blown repeatedly, and the blowout occurs parcularly at the instant when you close the knife switch. Remedy Check the terminals and the outer casing to see whether they are short-circuited, and measure the resistance of each phase with an avometer. If short circuit occurs or the resistance of a certain phase is low, this means that short circuit does exist in the windings and/or between turns, and insulaon layers have been burned or deteriorated. A megameter can be used in this inspecon, too. I f the insulaon resistance is lower than 2 MW, this means that the insulaon layer is already breakdown. If the motor has been burned, repair it or replaced it with a new one. b) Fault of control relay Analysis of Trouble Overheat, burnout or wear of control relay contacts may occur generally. All these will cause poor contact in electricity. Remedy Dismantle it to repair, or replace it with a new one. c) Poor electric contactor in thermostat Analysis of Trouble Burnout of contactor and leakage of temperature sensing agent may occur generally. Remedy Replace the old with a new one. d) Check the terminals for loose connecon and electric circuits for other abnormal phenomena.

5) Mechanical faults of compressor

a) Seizing of sha This phenomenon is caused mostly by poor lubricaon, such ad insucient quanty of lubricant, clogging in the lubricant oil line, or intermient lubricant oil supply. Dirt and other impuries in the lubricant oil will increase its viscosity

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the resistance between the power cord plug and the case body with an avometer ,the reading will be zero (0W); in the worst case ,the fuse will be blown .Check the 3-prong outlet to see whether the live wire and the null line are inversely connected ,this makes the ground protecon lead-out from the power cord plug being connected to the live wire .Another possibility is that the live wire and null line of the outdoor power supply circuit have been inversely connected accordingly ,this makes the null line become a live wire . G .Stronger vibraon and loader noise

1) Refrigerator placed improperly a) Uneven ground Uneven ground will cause there frigerator to be placed unsteadily ,causing stronger vibraon and noise during its operaon . b) Leveling screws not properly adjusted If the leveling screws on refrigerator legs have not been adjusted properly ,vibraon and noise will sll occur even if the refrigerator has been placed on a level ground .

2) Abnormal noise from compressor Three suspended spring inside the compressor case are out of balance ,and strike against the case ,moreover ,the wear of compressor parts may cause noise somemes .

3) Resonance of tubing and loosening of parts Improper and compact laying of tubes or the loosening of parts may cause vibraon and noise .

4) Inspecon method To nd the sources of noise, press the vibraon spot with your hand while the refrigerator is in operaon and listen aenvely whether the vibraon becomes weake or vanishes. If the refrigerator has not been levelly placed ,put a level meter on its top table and adjust the leveling screws on its legs .In case noise occurs from the compressor ,strike dierent locaons on the side surface of its case using a rubber hammer or hand hammer with a wood block in-between so as to determine whether the suspended springs are out of balance or being seized .

the thermostat is unable to cut o the power supply to the compressor and stop it. Remedy If it has been found that the refrigerant in the system is insucient in quanty, recharge it with refrigerant. In case clogging occurs, disassemble the part where it is blocked. If the evaporaon temperature is too high, sele this problem with an appropriate quanty of refrigerant.

3) No stoppage of compressor due to damaged heat-insulaon layer inside case body and/or door seal Analysis of Trouble When the heat-insulaon layer inside the case body deteriorates or the door seal is not closely touches the door frame, the temperature in the refrigerator will rise and makes the compressor running connuously. Remedy Check the heat-insulaon layer for its damaged parts, repair it to improve its heatinsulaon property. If the door has deformed or the door seal is not ghtly sealed against the case body, repair them, respecvely.

5) Too much food is placed in the refrigerator, or is placed too densely, resulng in poor venlaon or poor condions for temperature sensing, and hence no stoppage of the compressor.

6) Too high ambient temperature, poorer venlaon and heat dissipaon make the compressor running without stop. F. Electric leakage of refrigerator

1) Slight electric leakage Electric insulaon has deteriorated due to being aected with damp, thus resulng in slight electric leakage.

2) Serious electric leakage Refrigerator case has become live due to faults occurred in some electric devices or the erroneous wiring in installing power cord plug or outlet by the user. This is very dangerous.

3) Electric leakage test a) Slight electric leakage A ngle sense will be experienced as soon as you touch the metal parts of the refrigerator with your hand .When you test them with a test pencil ,its neon lamp will come on .In that case ,the rst thing you need to do is to determine whether the grounding is perfect .If the grounding is no problem ,turn o the refrigerator immediately ,then check the insulaon of electric circuits with an avometer . b) Serious electric leakage Never touch the case body of the refrigerator,its door handle or other metal parts with your hand .Test the refrigerator with a test pencil ,it will light up intensively ;measure

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