Summary of Contents for Logic LUL55S10
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Page 1: Content
REFRIGERATOR Service Manual Models: LUL55S10 Features ● Energy efficiency ● Low noise operation ● Thick insulation for energy efficiency... -
Page 2: Table Of Contents
CONTENT CONTENT 1. Content 1 2. Product code illumination and Series Introduction 2 3. Specifications 3 4. Safety precautions 4 5. -
Page 3: Specifications
Specifications Specifications Models LUL55S10 Net capacity (L) Color Silver Power Supply 220~/50 (V/Hz) Rated Input Power Power Consumption 0.415 (kW.·h/24h) Net Weight 28.5 (kg) Gross Weight 31.5 (kg) Unit Dimension 570*544*845 (D*W*H) (mm) Packing Dimension (D*W*H) 560*535*885 (mm) Container Quantity... -
Page 4: Safety Precautions
Safety precautions Safety precautions This appliance uses 220-240V~50Hz AC It is required to use separate, special for power supply. outlet with securely grounding. Failure in operation and damage to the control The power cable of this appliance is fitted with panel, thermostat or the compressor will occur if three-core (grounding) plug complying with voltage is outside the range 187-242V, unless a... - Page 5 Safety precautions Safety precautions It is absolutely prohibited to put hazardous Do not keep medicine, vaccine, or chemical inflammable or explosive articles, strong agent in the appliance. This refrigerator is for corrosive acid, alkali, etc inside the household use, which cannot store items appliance.
- Page 6 Safety precautions Safety precautions When the refrigerator has started running, Do not spray water onto the refrigerator, or take care not to touch the cold surface of the place it in wet area where water can be freezer compartment with hand, especially easily splashed, so as to avoid influencing with wet hand.
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Page 7: Function Schedule
Function Schedule Function Schedule ● Energy efficiency ● Low noise operation ● Thick insulation for energy efficiency... -
Page 8: System Flow Chart
1. Compressor 2. Condenser 3. Dry filter 4. Capillary tube 5. Evaporator 2 Brief Description of System Flow Chart Model LUL55S10 is a direct cooling single-system refrigerator. When the refrigerator is just powered on, the refrigerant flows in the sequence: 1->2->3->4->5>1... -
Page 9: Circuit Diagram
Schematic Circuit Diagram 2 Brief Description of Control Principle Model LUL55S10 is a direct cooling single-system larder. A mechanical type of all the control is generally adopted. The thermostat directly controls the start and stop of compressor, and hence the refrigerator temperature. -
Page 10: Maintenance Service And Trouble Shooting
Maintenance Service and Trouble Shooting Maintenance Service and Trouble Shooting 1. No cooling No cooling Check and repair according to If compressor can the section of "the compressor run after it stop to does not work". five minutes and give power. If compressor can Refrigerant leak. - Page 11 true. Maintenance Service and Trouble Shooting 2 The compressor doesn't stop Compressor does not stop Check and repair according to Is refrigerator the section of "No cooling". cooling? Check and repair according to Is cooling capacity the section of "Cooling capacity insufficient? is insufficient".
- Page 12 Maintenance Service and Trouble Shooting 3 Cooling capacity is insufficient Cooling capacity is insufficient Check the Is the ambient thermostat is temperature low than 16°C correct? Does the Adjust and instruct refrigerant leak consumer how to use slowly? Repair...
- Page 13 Maintenance Service and Trouble Shooting 4 The compressor doesn't work The compressor doesn't work. Is the interior light on when door is opened? Check the power Repair source and power Check the Is the ambient temperature thermostat is low than 16°C correct? Adjust and instruct consumer how to use...
- Page 14 Check and repair compressor and accessory Maintenance Service and Trouble Shooting 5 Normal Phenomena—Not Troubles for Refrigerators In a domestic refrigerator, there is not only a complicated electric control system, but also a refrigerating system that is difficult to discern whether it is in a good working condition.
- Page 15 Maintenance Service and Trouble Shooting 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 conditions of a refrigerator include the temperature inside the refrigerator ,operation rate ,electric power consumption ,noise level ,and other functional indexes .If any one of these parameters is beyond its permissible range ,this indicates that there is a fault or...
- Page 16 tube inside the compressor ,and clucks are the sound of striking after the suspended spring inside the compressor has broken . During the normal operation of compressor ,a slight and uniform hum sound due to undulation of electric current can be heard generally ,this is a normal phenomenon .However ,if it sounds like "tong ,tong ",i.e., an impact sound inside the compressor ,this means that a large quantity of wet vapour of refrigerant or refrigerating oil has come into the compressor cylinder ;if it sounds like "dang ,dang", a striking sound of...
- Page 17 phenomenon has been found through the above-mentioned checkups ,you need not to make a hasty conclusion based on only one abnormal phenomenon .It is advisable to find out two or more abnormal phenomenon ,or conduct troubleshooting 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 finally make a correct judgment .
- Page 18 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 effervesces as soon as it flows into the refrigerating oil at the bottom of compressor .If the condition is severe ,foams will fill all over inside the compressor housing and be sucked by the piston ,causing damage to the components of compressor .
- Page 19 Remedy Turn the refrigerator off ,and make preparations for defrosting ,open the refrigerator door to let the air come in ,or use a fan to speed up air flowing so as to shorten the time needed for defrosting .Never strike the frost layer with any iron tools or wood stick in order to avoid damage to the evaporator tubing .
- Page 20 I) slow leakage for instance ,when we want to use a refrigerator that has been put out of quite a long time ,we find the leakage of refrigerant ,or in the course of its operation ,we have found that the refrigerator is gradually becoming not so cold and finally no refrigerating cab be achieved ;...
- Page 21 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,...
- Page 22 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"...
- Page 23 Probably, too many things have been put into the refrigerator, and hence the thermal load exceeds its refrigerating capacity ; or in case the power supply voltage drops considerably, the current flowing through the motor will increase drastically making the thermal protector actuate and the fuse blown , and hence the motor stops running.
- Page 24 motor, and a hum sound can be heard from it. Remedy Measure the voltage with a voltmeter, if it is really too low, give directions to the user for buying a stabilizer so as to step up the voltage, thus normal operation can be achieved. 3) Check the thermal relay to see whether its contacts are closed.
- Page 25 This phenomenon is caused mostly by poor lubrication, such as insufficient quantity of lubricant, clogging in the lubricant oil line, or intermittent lubricant oil supply. Dirt and other impurities in the lubricant oil will increase its viscosity and cause the shaft to be seized. Copper plating may also result in seizing of shaft.
- Page 26 refrigerant. 4) No stoppage of compressor due to damaged heat-insulation layer inside case body and/or door seal Analysis of Trouble When the heat-insulation 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 continuously.
- Page 27 b) Leveling screws not properly adjusted If the leveling screws on refrigerator legs have not been adjusted properly ,vibration and noise will still 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 sometimes .