Sears GR-131SF User's Manual
Contents
1. Before performing this operation if the vacuum pump and refilling cylinder are connected make sure that the valve placed between the vacuum pump and refilling tube are closed to keep the Freon for adding to the system Figure 6 FILLING OR VALVE TO BE CHARGE TUBE OPENED WHEN REFILLING TO THE TO THE REFRIGERATION CHARGE SYSTEM CYLINDER TO THE VALVE TO BE VACUUM CLOSED PUMP AFTER VACUUM t Figure 6 In addition check the graduated scale on the cylinder for the quantity of R134a to be added for example if we have 750 grams of Freon in the cylinder and must add 165 grams to the group this amount will be reached when R134a has dropped to 585 grams remembering that the indicator shows a lower limit of meniscus Do this after choosing the scale corresponding to the gas pressure different scales reported as the same gas pressure indicated by the pressure gauge on the top of the column To make R134a flow into the system open the valve placed at the base of the cylinder and connected to the filing tube The amount of Freon cannot be added to the system all at once because it may cause a blocking of motor compressor Therefore proceed by adding original quantity of about 20 30 grams and close the valve immediately The pressure rises and the motor compressor must start sucking the gas and making the pressure go down again Regulate the valve again maintaining the same manner until reaching the quantity of R12. Thermostat gt gt Replace the device Check if the current flows at the main coil of the Comprossor Check the components on the main circuit Coil shorted gt Replace the Compressor Replace the Poor running of the Compressor Measure the starting voltage Low voltage components Check if the current flows at the contacting point of the starting system Poor contacting point and broken Increase the voltage Check if the current flowing of the sub coil of the Compressor Replace the Shorted 2 Compressor Is the current amount of the electric components normal The coil of the Compressor Motor is worn out gt Replace the device Repair the Compressor runs Frost doesn t form at the Evaporator when operating set for more than 30 min 11 Refrigerant leaks Poor compressing gt Compressor
3. gt Repair the Compressor COMPRESSOR AND ANOTHER ELECTRIC COMPONENTS gt Power Source Separate the PTC STARTER from the Compressor and measure the voltage between M and C of the Compressor Y Equal to the applied YES voltage Rating voltage 10 The applied voltage is not in the range of Rating Voltage 10 Advice the customer to use in the fixed Replace OLP range ewka the fih Test the resistance among YES resistance of the M C S C and M S Compressor Motor NO v Replace the Compressor ie me fih Test the resistance of the both YES PE SOJE terminals in the PTC STARTER PTC NO Replace the gt PTC STARTER 4 Check OLP Check if applying a OLP works within 30 sec YES regular OLP ES in forcible OLP operation by turning instant power on NO and off NO Measure minimum starting voltage Check the after checking steps 1 3 above Starts at the voltage starting state And measure the pressure balance of the PTC with the interval of m
4. SUPPORTER CAN Keeps any kinds of bottles MAGNETIC GASKET Tight fitting door seal keeps all the cooling power locked inside No hooks or latches DISASSEMBLY A DOOR 1 Loosen 3 screws holding an upper hinge to separate the door body Figure 7 C COMPRESSOR AND PTC 1 Remove Clamp Protector Cover Power Cord and Lead Wire first Figure 10 2 Separate OLP 3 Separate PTC 4 Remove the Compressor Base by loosening 4 bolts fixed to base plate of the set Figure 11 B THERMOSTAT 1 Pull Knob Dial 2 Loosen 1 screw holding the case and pull it out to remove the Thermo cover Figure 8 Figure 11 Figure 10 Figure 8 3 Pull out thermostat in the theremostat cover and disconnect lead wires Figure 9 NOTE Replace a new thermostat with proper specification Figure 9 5 Remove the Compressor by loosening 2 earth screws next to Compressor NOTE Replace the Compressor after peeling off painted part of earth terminal Compressor inhales the gas evaporated from Evaporator and condenses this gas and then delivers to Condenser PTC is abbreviation of Positive Temperature Coefficient and is attatched to the Compressor and operates motor OLP prevents Motor coil from being started inside Compressor Do not turn the Adjust Screw of OLP in any way for normal operation of OLP CIRCUIT DIAGR
5. E 14 HOME DEPOT HDP Electrical Specification ITEM GR 051SF GR 131SF GR 151SF BUYER MODEL NAME GR 051SF GR 131SPF GR 151SPF RATED INPUT W 70 15 70 15 70 15 DEFROST INPUT W ENERGY CONSUMPTION kwh yr 288 330 350 AMPERE Amp 0 84 1 0 0 7 RATING V Hz 115 60 115 60 115 60 REFRIGERANT R134a R134a R134a CHARGE Oz 1 41 2 12 3 35 COMPRESSOR NS24LBCM NS24LBCG NS30LACM OLP 4TM232NFB 4TM232NFB 4TM265MFB PTC P6R8MD P6R8MC PGR8MD CAPACITOR R 10uF 250VAC s 10uF 250VAC CAPACITOR S
6. 34a established for the system being charged When the system is running the suction pressure must be stabilized from 0 10 to 0 4 atmosphere SPECIFICAT IONS ITEMS SPECIFICATIONS ITEMS SPECIFICATIONS DOOR TYPE 1 DOOR INSULATION DOOR POLYURETHANE NET CAPACITY 9 CABINET POLYURETHANE CONDENSER TYPE WALL CONDENSER RADNA ROLE BONE TIPE DIMENSION 463 W X830 H X500 D mm FLUSH BACK NET WEIGHT 22 Kg DEFROSTING SYSTEM MANUAL REFRIGERANT R 12 67g R 134a 60g TEMPERATURE CONTROL KNOB DIAL VS Series HTS 150 FREOL 22G COMPRESSOR 200cc 200cc LUBRICANT NS Series HTS 150 FREOL a 22G COMPRESSOR 180cc 180cc EVAPORATOR Door Inside THERMOSTAT The heart of the refrigerator It evaporates the refrigerant fluid and thereby absorbs heat from the surrounding ICE CUBE TRAY Door Inside Ice cube is easy to remove from the tray DRIP TRAY Catches the water that drips off the evaporator GE when defrosting PLASTIC COATED SHELVES Have full width and can slide out PVC BAR Keeps any kinds of fruits and vegetables NOTE This is a basic model The shape of refrigerator is subject to change spi Regulates the operation of the motor and controls the temperature inside the refrigerator
7. AM y THERMOSTAT py YL YELLOW BK BLACK BL BLUE GN GREEN OVER LOAD PROTECTOR z POWER SUPPLY CORD P T c STARTER THE PLUG TYPE ON CIRCUIT DIAGRAM IS SUBJECT TO CHANGE IN DIFFERENT LOCALITIES J652 00041C TROUBLESHOOTING DEFECT EFFECT CAUSE REMEDY GROUP PARTIALLY Evaporator dose not frost even An empty refrigerant system Leakage must be eliminated by OR COMPLETELY though motor compressor runs indicates a leakage of R134a This resoldering the defective point or OUT OF continually loss is generally to be looked for at substituting the damaged REFRIGERANT the soldering points connecting the evaporator CHARGE various components or in an eventual hole in the evaporator made by the user EXCESSIVELY This defect is indicated by the If in the refrigerant system a quantity The system must be emptied and FULL presence of water outside of R134a is introduced which is subsequently refilled introducing the refrigerator near the motor caused by formations of ice on the return tube greater than that indicated the excess gas dose not terminate its expansion in the evaporator but proceeds into the return tube correct quantity of R134a HUMIDITY IN THE SYSTEM This defect is indicated by the partial frosting of the evaporator and by continual defrosting cycles determined by the interruption of the flow of gas on the evaporator The motor compressor keeps running The refrigerant sy
8. BE CHARGE TUBE FEMALE BROKEN EXTENSION HANSEN MALE HANSEN SERVICE TUBE SOLDERING EXTENSION POINT Figure 1 Figure 2 It is necessary to execute the soldering operation with valve open so that the fumes caused by oil residue can come out freely without blowholes between two tubes during heating the point to be soldered The extension fitted with the male Hansen is connected to the female fitting of the vacuum pump tube Figure 3 Air evacuating from the system begins as soon as the pump starts The refrigeration system must be kept under vacuum until the reading on the low pressure gauge indicates vacuum 0 absolute 1 atm 760 mm Hg in any case it is advisable to keep the pump running for about 30 minutes Figure 4 ue 1 ee TO THE VACUUM PUMP PRESSURE GAUGE Figure 3 Figure 4 In case that a considerable leakage occurs and to stop the vacuum pump will be necessary and add a small quantity of Freon to the system if vacuum should not be obtained pressure gauge can t fall to 1 atmosphere start the refrigeration unit and find the leakage with the special leak finder When the defective soldering point is visible re do it after opening the extension tube valve and reestablishing the normal outside pressure inside the group Because the melted alloy is sucked into the tubes and block them the pressure must be rebalanced when vacuum is in the system in soldering As soon as the vacuum ope
9. SAFETY PRECAUTIONS 1 Check if an electric leakage occurs in the set 2 When servicing current applying parts unplug prior to servicing 3 In case of testing with power injecting wear rubber gloves to prevent electric shock 4 If you use any appliances check regular current voltage and capacity 5 Don t touch metal products in cold freezer room with wet hand lt may cause frostbite 6 Prevent water flowing to electric elements in mechanical parts 7 When sloping the set remove any materials on the set especially thin plate type ex glass plates or books 8 When servicing evaporator part wear cotton gloves without fail It is to prevent wound by sharp fin of evaporator 9 Leave a breakage freezing cycle to a heavy service center The gas in cycle inside may soil ambient air SERVICING PRECAUTIONS AIR RECHARGING IN COMPRESSOR Test the refrigeration system by connecting it electrically before refilling operation This is necessary to ascertain the function of the motor compressor and identify the defects immediately If the defects have been found empty the old system of eventual R 12 residue by breaking off the end of the extension piece at its narrow point Figure 1 Replace the filter and any damaged components Unsolder and pull off the piece remaining inside the service tube and then attach an extension completely with male Hansen and last solder it to the same tube again Figure 2 POINT TO
10. d then proceed with SHORT CIRCUITED delivery to the motor compressor winding if blocked there is a refilling OR BLOCKED mechanical failure in the motor compressor MOTOR No frost forms on the evaporator In this case there is a mechanical The motor comprossor must be COMPRESSOR even if the motor compressor is failure in the diaphram valves which replaced and then proceed with DOSE NOT apparently running regulary remaining continually open do not refilling COMPRESS permit the piston to suck and compressor the which consequentely dose not circulate in the system NOISY MOTOR In case of mechanical failure inthe The cause of the excessive noise is The motor comprossor must be COMPRESSOR motor compressor there in an normally to be sought for in a substituted and then proceed with excessive noise when the system is functioning in case a suspension spring is unhooked banging will be heard and there will be especially strong vibrations when the system starts up and stops mechanical break down and only rarely in the unhooking of one of the suspension springs the refilling 10 NO COOLING The Compressor doesn t run Check if the current flows at the contacting point of the Thermostat Poor contacting point Replace the Check the current flowing of starting system Shorted Broken
11. e it may cause a blocking of motor compressor Therefore proceed by adding original quantity of about 20 30 grams and close the valve immediately The pressure rises and the motor compressor must start sucking the gas and making the pressure go down again Regulate the valve again maintaining the same manner until reaching the quantity of R 12 established for the system being charged When the system is running the suction pressure must be stabilized from 0 30 to 0 6 atmosphere AIR RECHARGING IN COMPRESSOR Test the refrigeration system by connecting it electrically before refilling operation This is necessary to ascertain the function of the motor compressor and identify the defects immediately If the defects have been found empty the old system of eventual R134a residue by breaking off the end of the extension piece at its narrow point Figure 1 Replace the filter and any damaged components Unsolder and pull off the piece remaining inside the service tube and then attach an extension completely with male Hansen and last solder it to the same tube again Figure 2 It is necessary to execute the soldering operation with valve open so that the fumes caused by oil residue can come out freely without blowholes between two tubes during heating the point to be soldered The extension fitted with the male Hansen is connected to the female fitting of the vacuum pump tube Figure 3 Air evacuating from the system begins as soon a
12. ore than 5 min Starts at the voltage of more than 90 242 Y of 85 below gt Check the starting YES gen gt Normal state at the regular voltage above NO Y Replace the PTC gt Normal gt PTC Poor starting or no operating of the Compressor First separate the PTC from the Compressor and check the voltage between NO 5 and 6 in the PTC with a multitester or Wheatstone Bridge The value is in the gt range of 15 28 for gt Normal the 22x PTC Check another electric components m The value is 0 y Abnormal Replace the PTC The value is gt Abnormal Separate the OLP from e the Compressor and check resistance value between two terminals of OLP with Tester NO Replace OLP 13 Check another electric components Replace the PTC EXPLODED VIEW 2 E o ya
13. ration is over add the quantity in grams of R 12 to the refrigeration system Remember that every system has an exact quantity of R 12 with a tolerance of 5 grams than can be added Figure 5 Before performing this operation if the vacuum pump and refilling cylinder are connected make sure that the valve placed between the vacuum pump and refilling tube are closed to keep the Freon for adding to the system Figure 6 TO THE R 12 CYLINDER jung aaa oy TO THE n REFRIGERATION SYSTEM Figure 5 FILLING OR VALVE TO BE CHARGE TUBE OPENED WHEN REFILLING e TO THE TO THE REFRIGERATION CHARGE SYSTEM CYLINDER TO THE VALVE TO BE VACUUM CLOSED PUMP AFTER VACUUM f Figure 6 In addition check the graduated scale on the cylinder for the quantity of R 12 to be added for example if we have 750 grams of Freon in the cylinder and must add 165 grams to the group this amount will be reached when R 12 has dropped to 585 grams remembering that the indicator shows a lower limit of meniscus Do this after choosing the scale corresponding to the gas pressure different scales reported as the same gas pressure indicated by the pressure gauge on the top of the column To make R 12 flow into the system open the valve placed at the base of the cylinder and connected to the filling tube The amount of Freon cannot be added to the system all at once becaus
14. s the pump starts The refrigeration system must be kept under vacuum until the reading on the low pressure gauge indicates vacuum 0 absolute 1 atm 760 mm Hg in any case it is advisable to keep the pump running for about 60 minutes Figure 4 POINT TO BE BROKEN CHARGE TUBE FEMALE EXTENSION HANSEN gt MALE I I HANSEN SERVICE TUBE SOLDERING EXTENSION POINT Figure 1 Figure 2 e Rad TO THE VACUUM PUMP PRESSURE GAUGE Figure 3 Figure 4 In case that a considerable leakage occurs and to stop the vacuum pump will be necessary and add a small quantity of Freon to the system if vacuum should not be obtained pressure gauge can t fall to 1 atmosphere start the refrigeration unit and find the leakage with the special leak finder When the defective soldering point is visible re do it after opening the extension tube valve and reestablishing the normal outside pressure inside the group Because the melted alloy is sucked into the tubes and block them the pressure must be rebalanced when vacuum is in the system in soldering As soon as the vacuum operation is over add the quantity in grams of R134a to the refrigeration system Remember that every system has an exact quantity of R134a with a tolerance of 5 grams than can be added Figure 5 TO THE R134a CYLINDER juan aan uu r TO THE lm REFRIGERATION SYSTEM Figure 5
15. stem is humid when there is a small percentage of water present which not completely retained by the dehydrator filter enters into circulation with the Freon and freezes at the capillary exit in the evaporator The system must be emptied and then refilled after eliminating the humidity PRESENCE OF AIR IN THE SYSTEM Poor performance of the refrigerant system which is indicated on the evaporator with a slight frost which dose not freeze and an excessive overheating of the condenser and There is air in a refrigerating system when during the filling phase vacuum is not effected or it is not adequately done Group must be drained and subsequently refilled after carefully creating vacuum motor compressor BLOCKED Because of the lack of circulation Eventual impurities contained in the To restore the system it must be CAPILLARY Freon in the system there is no Freon or in the components of the emptied substitute the capillary or frosting of the evaporator while a refrigeration system before the evaporator entirely in case the slight overheating of the first spiral of assembly and not retained by the capillary is coaxial with respect to the condenser is noted filter can obstruct the capillary the return tube then refill it MOTOR The system dose not work and the In case of short circuit the The motor compressor must be COMPRESSOR clixson intervenes interrupting breakdown is due to the electric replaced an
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