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suction 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 refrigerating can 

be achieved. Method for making judgement It is quite difficult to differentiate this 

trouble from others because they often have similar symptoms. In repairing, firstly, hear 

attentively if there is some abnormal sound coming from the compressor (sometimes 

,  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 troubleshooting; secondly, measure the pressures at the  high and low pressure 

ports of the compressor with pressure gauges, if thegas suction valve block is broken, 

the suction pressure gauge pointer will swing violently and the suction pressure is very 

high, whereas when the gas discharge valve block is broken , the discharge pressure 

gauge pointer will swing drastically 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 suction pressure and/or discharge 

pressure exceed their respective prescribed ranges, thus making a pressure-operated 

protective relay shut off 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 

suction 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 frosting and poor refrigerating effect, may occur if excessive refrigerant 

has been charged into the system. Superfluous refrigerant will occupy a certain space 

of the evaporator, thus reduce its heat dissipating area, and the phenomenon of «liquid 

striking» may occur, too. Meanwhile, dew or frost condensation may occur on the gas 

return tube, and the gas discharge pressure will obviously rise, when it reaches the 

threshold value, the protective relay will actuate and shut off the power supply to the 

compressor. Remedy Open the tubing, re-evacuate and then charge the system with a 

proper quantity of refrigerant.

b) Air left 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 refrigerating system, 

it is advisable to release the refrigerant, purge the tubing with nitrogen, and then charge 

the system with the filtered refrigerant. However, the commonly adopted method is to 

connect a filter with moisture absorbers (such as silica-gel, anhydrous calcium chloride) 

to the refrigerating system so as to filter out the moisture from the system, then replace 

the filter, evacuate it again and finally 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 settle down and clog it. In case considerable dirt accumulates 

there, the whole filter 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 suction pressure, lower temperature of discharged gas, and no gas flowing 

sound  from  the  evaporator.  The  difference  between  the  both  is  as  follows:  if  the 

clogging is caused by dirt , tapping the suspicious clogged point (generally in the capillary 

or the connection joint of the filter) may cause the refrigerant to flow through partially, 

resulting in some corresponding change, whereas in that case if you heat it with a 

hot towel, no reaction will happen, no flowing sound can be heard, moreover, there 

is no periodic change. After rejecting the possibility of ice clogging, it can be generally 

considered as the clogging due to dirt . Remedy Dismantle the system, remove the dry 

filter from it, purge the tubing with nitrogen, install a new filter, then evacuate it and 

finally charge it with refrigerant.

C) Clogging in filter

Analysis of Trouble Total clogging of a filter is rarely to occur. This trouble is mostly caused 

by the paste-like matter formed from the substances filled into the system or other 

dust after the refrigerator has been used for a longer time, or by the dirt accumulated 

gradually inside the filter. Sometimes, tapping the filter nay cause a passage for flowing, 

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 suction and discharge valve blocks

Analysis of Trouble The compressor works by means of the opening and closing of gas

Содержание MCSR-6085W

Страница 1: ...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...

Страница 2: ...icefromsurfacesoftherefrigeratorand orfreezercompartment Doingsocouldpuncturethecoolingcoil causingtheunittoloseitsabilitytomaintaincoldtemperaturesandvoidingthewarranty SeetheCareandCleaningsectionfo...

Страница 3: ...CTRICITY 4 operationinstruction 5 ControlSettings 5 Abouttherefrigeratorfeatures 6 Careandcleaningoftherefrigerator 6 Careandcleaningoftherefrigerator 6 Careandcleaningoftherefrigerator 7 Preparingtoi...

Страница 4: ...ibility andobligationtohaveitreplacedwithaproperlygrounded3 prongwalloutlet The refrigerator should always be plugged into its own individual electrical outlet whichhasavoltageratingthatmatchestherati...

Страница 5: ...emilktest Placeacontainerofmilkonashelfandcheckitadaylater Ifthemilkis toowarmortoocold adjustthetemperaturecontrol Afterchangingthecontrol allow This provides the best performance and also prevents o...

Страница 6: ...side To help prevent odors leave an open box of baking soda in the refrigerator Unplug the refrigerator before cleaning If this is not practical wring excess moisture out of sponge or cloth when clean...

Страница 7: ...r unscrew the lens and pull horizontally until the lens is removed Gently unscrew the light bulb and replace with a bulb of 15 watts orless Careandcleaningoftherefrigerator Defrosting Defrost whenever...

Страница 8: ...yandcarefully RefrigeratorLocation Do not install the refrigerator where the temperature will go below 50 F 10 C becauseitwillnotrunoftenenoughtomaintainpropertemperatures Installitonafloorstrongenoug...

Страница 9: ...erator 12 Re install the adjustable legs Insure that the smaller leg is on the same side as the bottomhinge 13 Placethefreshfooddooronthebottomhinge 14 Place the bottom peg of the middle hinge in the...

Страница 10: ...10 Troubleshootingtips Savetimeandmoney...

Страница 11: ...Safety precautions...

Страница 12: ...12 Safetyprecautions...

Страница 13: ...Thickinsulationforenergyefficiency SystemFlowChart 1 SchematicdiagramofSystemFlowChart 2BriefDescriptionofSystemFlowChart Allmodelsareadirectcoolingsingle systemrefrigeratororfreezer Whenthe refriger...

Страница 14: ...oting 1 Nocooling CircuitDiagram 1SchematicCircuitDiagram BriefDescriptionofControlPrinciple Amechanicaltypeofallthecontrolisgenerallyadopted Thethermostatdirectlycontrolsthestartandstopofcompressor a...

Страница 15: ...15 3Coolingcapacityisinsufficient 2Thecompressordoesn tstop...

Страница 16: ...tstoppedrunning arumblingsoundcanbeheardfrominsideits evaporator Thisisasoundcausedbytheflowingofrefrigerantintheevaporatortubing Because the pressure difference is still greater after the compressor...

Страница 17: ...inside the compressor this means that some moving parts have loosened note to differentiate this sound from thoseformedduringstartingorstoppingthecompressor 4 For the direct cooling refrigerator a kin...

Страница 18: ...othosepartsthatareliableto leak check main connection points for oil seepage and tubing for cracks If there is no b ListentothesoundcausedbytheflowingofgasintheevaporatorOpentherefrigerator doorwhilet...

Страница 19: ...r the heat conduction effect will be severer leak point charge the system with nitrogen and detect leak points with the commonlyadoptedmethod repairthem evacuate chargethesystemwithrefrigerant andthen...

Страница 20: ...ntly sometimes therefrigeratorworkswell andsometimesnotwell Inorder todeterminewhetheritiscloggedwithice heatthesuspiciouspointswithhotwaterto make ice melt and after a while if a gas flowing sound re...

Страница 21: ...e system with a properquantityofrefrigerant b Air left in the system Analysis of Trouble The residual air in the system will circulate togetherwiththerefrigerantinthesystem Themajorsymptomscausedbythi...

Страница 22: ...ue to the leakage of temperature airishighergasdischargepressure higherdischargedgastemperature thegasdischarge tubing is considerably hot when you feel it with your hand and poorer refrigerating effe...

Страница 23: ...ationtemperatureinthesystemistoo high thetemperaturesensingagentinthetemperaturesensorisalsohotter therefore sensing agent from the temperature sensor Remedy Remove the relay cover to check up its con...

Страница 24: ...dthattherefrigerantinthesystemisinsufficientinquantity recharge it with refrigerant In case clogging occurs disassemble the part where it is blocked If the evaporation temperature is too high settle t...

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