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8.HOW TO REPLACE MAJOR COMPONENTS

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In evaporator liquid refrigerant is so expanded to absorb heat around evaporator that compressor 

 sucts  refrigerant  in  low  temperature  and  low  pressure  and  then  compresses it  to  gaseous
 refrigerant in high temperature and high pressure which will be discharged to outside.

Gaseous refrigerant in high temperature and in high pressure so radiates evaporation latent heat 
absorbed from evaporator surrounding during

 

passing through condenser and compression heat 

due to refrigerant gas compression to surrounding of condenser that  refrigerant  becomes liquid 
in high pressure.

In order to  prevent  that  moisture  and  foreign  substances  resided  inside  every  parts  during 
refrigeration cycle assembling is so included among refrigerant gas that it chokes the exit of inlet 
of capillary, dryer has drying substances (molecular sieves) and filter  inside it  which  absorbs or 
purify them.

Regulates and/or keeps(in specified low)refrigerant flow rate so that maintains constant pressure 
drop from wire condenser to evaporator.

Liquid  referigerant  passed  through  capillary so  expand  in evaporator  that  it  becomes  low 
temperature and low pressure to absorb heat around evaporator, so that it chills surrounding air 
and at that time liquid refrigerant becomes gaseous.

Liquid refrigerant in high temperature passing through capillary tube so changes heat between
low  temperature on suction tube and then more lowers liquid  refrigerant  temperature  at  just 
before expansion so that increases its enthalpy to result big refrigeration efficiency at last.

Refrigerant gas in low temperature passing through suction tube so exchanges  heat  between
liguid  refrigerant   high  temperature   passing  through  capillary  that  it   becomes  more  hith 
temperature condition and then it becomes compete  gaseous  so  that  increase  compression 
efficiency of compressor.

Mounted inside the refrigerator to regulate the temperature of refrigerator.

When motor starts running owing to sub winding interrupts of current simultaneously.

When circuit is overheated, it is cut off to prevent compressor wind burn-out.

8-1. REFRIGERATION CYCLE

COMPRESSOR:

CONDENSER:

DRYER:

Capillary tube:

Evaporator: 

HEAT EXCHANGE BETWEEN SUCTION TUBE AND CAPILLARY TUBE:

THERMOSTAT:

STARTING RELAY:

OVERLOAD PROTECTOR:

Summary of Contents for RL-28FBSI

Page 1: ... PRODUCT SPECIFICATION 2 3 STRUCTURE 3 4 CIRCULATION OF REFRIGERANT 5 5 SCHEMATIC DIAGRAM 6 6 SPECIFICATIONS OF MAJOR FUNCTIONAL PARTS 7 7 OPERATING PRINCIPLE OF MAJOR COMPONENTS AND INSPECTION METHOD 8 8 HOW TO REPLACE MAJOR COMPONENTS 11 9 TROUBLE SHOOTING 13 10 EXPLODED VIEWAND PARTS LIST 14 ...

Page 2: ...No 1 and starting capacitor itself only do not supply power in order to check for eletrical charge and discharge for more than two minutes When power is supplied for more than two minutes the insulation inside the capacitor may be broken When it is impossible to finish the test within two minutes wait for about 30 minutes and then check again 1 2 2 When replacing the relay connected to the compres...

Page 3: ...volume g HFC 134a 160g Temperature control Mechanical Thermostat Insulation material Door Seal Polyurethane Foam 141b Liner ABS Magnetic gasket Acces sories Door Storage Option 1Guard Bottle 1 Guard Variety 2Guard Egg 1Tray Ice 1Tray Egg FreezerStorage Ref Storage 2 Assy Tray Upp 1 Assy Tray Low 3 Assy Shelves 1 Assy Tray Veg 1Guard wine Printed Matter Owner s Manual Label 2 PRODUCT SPECIFICATION ...

Page 4: ...ONENTS 3 STRUCTURE 3 7 ASSY TRAY LOW 8 GUARD EGG 9 GUARD VARIETY 10 TRAY EGG 11 TRAY ICE 12 GUARD BOTTLE 1 TOP TABLE PANEL PCB 2 ASSY LAMP 3 GUARD WINE 4 ASSY SHELF 5 CASE VEGETABLE 6 ASSY TRAY UPP 3 4 5 6 7 8 9 10 11 12 2 1 ...

Page 5: ...3 2 PRODUCT INSTALLATION A B C D F G H I J K RL28FBSW 550 671 9 979 5 1711 1750 39 392 1094 76 664 RL28FBSI 550 671 9 979 5 1711 1750 39 392 1094 76 664 G H C B I D A F J K 4 MODEL ...

Page 6: ...4 CIRCULATION OF REFRIGERANT 5 Condenser Evap fre Evap ref Tube capillary Compressor Dryer 4 1 Circle of refrigerant ...

Page 7: ... NC NC BLK BLK BRN BRN BRN BRN BRN BRN BRN BRN GRY GRY GRY GRY GRY GRY GRY GRY GRY GRY BLU BLU BLU BLU EARTH EARTH W BLK W BLK W BLK W BLK W BLK W BLK RED RED RED RED RED RED PINK PINK EARTH EARTH Y GRN Y GRN AC220V 50Hz AC220V 50Hz REF THERMO REF THERMO HEATER HEATER S W S W S BLU S BLU P T C RELAY P T C RELAY t t t t 2 2 1 1 1 1 1 1 3 3 3 3 3 3 6 6 2 2 2 2 P P L L H H N N 4 4 4 4 4 4 3 3 O L PRO...

Page 8: ...RCE AC 220V 50Hz QB66C 165W RSIR OUT PUT STARTING TYPE MODEL COMPRESSOR EVAPORATOR CONDENSER DRYER MOLECULAR SLEVE CLUSTER FIN TYPE CAPILLARY TUBE REFRIGERANT g THERMOSTAT POSISTOR MODEL MM3 23GC 8EA503 WDF29 O1 8 0 62 3500 R 134a 160g CLOSE TEMP OPEN TEMP 61 8 C 120 5 C OVERLOAD P ROTECTOR ...

Page 9: ... has failed Operating principle Operating principle Inspection method Inspection method The overload protects the compressor motor by responding to both the temperature and current The overload protector is basically made up of a set of the contacts normally closed and the bimetal element The overload mounted externally and in direct contact with the compressor case is connected in series with bot...

Page 10: ...ing and in parallel through the relay and start winding Initially the resistance of the relay is low enough to pass sufficient current through the start winding and permit the compressor to start Then instantaneously the resistance of the relay goes high in effect reducing the current flow through the relay to a trickle This trickle current causes the resistance of the relay to remain high thus ke...

Page 11: ...within the gas charged capillary tube and billows assembly responds to temperature sensed at the sensing bulb Rising temperature causes the pressure to increase and expand the accordion type billows The expanded billows actuates the linkage which allows contracts to close When the temperature drops the billows contacts due to a decrease in pressure and the snap action of the linkage opens the cont...

Page 12: ...o evaporator Liquid referigerant passed through capillary so expand in evaporator that it becomes low temperature and low pressure to absorb heat around evaporator so that it chills surrounding air and at that time liquid refrigerant becomes gaseous Liquid refrigerant in high temperature passing through capillary tube so changes heat between low temperature on suction tube and then more lowers liq...

Page 13: ...ot united in these models and cannot be taken off together Cut them into two units at joint with a weider or a cutter Then take them out separately 8 3 Steps for replacing relay 8 4 Steps for replacing door panel 8 5 Steps for replacing compressor evaporator unit 8 2 Steps for replacing thermostat 1 Take off the screws fastening the lamp box 2 Take off the screws fixing the capillary tube 3 Take o...

Page 14: ... If voltage is below rated value contact utility company If starting voltage drops below 10 of rating contact utility company and have household wiring capacity increased 9 3 Compressor runs normally but inside temprature does not drop at all Faulty compressor evaporator unit After continuing operation for over 20minutes let a drop of water fall onto evaporator and see if it becomes frozen Replace...

Page 15: ...14 1 2 2 1 2 2 2 3 3 4 5 10 1 DOOR PARTS 10 EXPLODED VIEW AND PARTS LIST 6 7 8 9 10 11 12 13 14 15 ...

Page 16: ...10 2 PARTS LIST DOOR 15 No Part number Description Q ty Spec Remark ...

Page 17: ...10 3 REF FRE PARTS 16 1 2 3 4 5 21 20 16 15 14 17 18 19 8 11 12 6 7 13 10 9 ...

Page 18: ...10 4 PARTS LIST REF FRE 17 No Part number Description Q ty Spec Remark ...

Page 19: ...18 10 5 CABINENT PARTS 17 20 23 24 26 25 18 27 28 14 19 18 21 30 21 22 29 16 2 1 6 8 7 4 5 3 9 10 11 12 13 ...

Page 20: ...10 6 PARTS LIST CABINENT 19 No Part number Description Q ty Spec Remark ...

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