SAWAFUJI ELECTRIC 0643 030 3210, Service Manual

Page 1: ...MODEL SB30F N W 0643 030 3210 SB30F N U 0643 030 3220 2021 12 0 SERVICE MANUAL ...

Page 2: ...ce skills and knowledge for ENGEL refrigerator This manual does not guarantee correct maintenance when service is done by a non skilled worker without technical knowledge Note that the content of this booklet including product specifications is subject to change for improvement without notice Always comply with the procedures directions and work tips in this booklet when servicing the refrigerator...

Page 3: ...Does not get cold 11 Cooling is Weak 12 Refrigerator is too cold 13 Compressor keeps turning on and off at short intervals 13 Typical Problem 14 Technical Data 14 5 CHECK POINT CHECK METHOD 15 Check 1 Fuse 15 Check 2 Output Voltage of the Power Supply 15 Check 3 Resistance of the Compressor 15 Check 4 Rated current value of compressor 16 Check 5 Resistance of the EVA Thermistor Cabinet side 16 Che...

Page 4: ...der coating SGCC ABS resin Interior enclosure Cabinet Coating Aluminum See page 3 ABS resin Heat insulator Foamed POLY URETHANE CYCLOPENTANE Input voltage 12V 24V 1 Refrigerant HFC 134a Average inside room temperature Dial position 1 Ambient temp 30 8 3 Average inside room temperature Dial position 5 Ambient temp 30 8 Temperature control Automatic temperature control by dial setting Electronic the...

Page 5: ... Dimensions SB30F N W U Tolerance is omitted Unit mm 1 SPECIFICATIONS 2 ...

Page 6: ... SB30F part name 3 1 SPECIFICATIONS ...

Page 7: ...f discoloration or deformation 4 Avoid installing the product close to a kitchen sink or water faucet Easily with the dew on the outer case and inner case and then installed in wet locations If installed in locations subject to water will damage the electrical circuits and other How to install the refrigerator Moving the compressor unit The compressor unit of this refrigerator can be placed in fou...

Page 8: ...t 2 INSTALLING A REFRIGERATOR 5 It is not necessary to remove it when fixing it to the left and right of the cabinet Be careful not to bend or crush the suction pipe In the unlikely event that it is damaged the manufacturer s warranty cannot be obtained Do not move the damper pipe See the figure on the left When working wear gloves to avoid injury サーミスタ 3P コントロールASSY ファンモーター WORK TIPS ...

Page 9: ...e of the cabinet Explanation when placing separately after this Move and anchor the compressor unit in a well ventilated level position Connect the 3 extension cords sold separately Fix 4 screws by using a screwdriver 2 INSTALLING A REFRIGERATOR 6 Please install the machine part on the same plane If there is a difference in height keep it within 100 mm If the height difference is larger than that ...

Page 10: ...lt in Change the position and orientation of the fan motor according to the following 1 When the mechanical part is installed on the right side of the cabinet 2 When the mechanical part is installed on the left side of the cabinet 2 INSTALLING A REFRIGERATOR 7 If you do not change the position or orientation of the fan the cooling performance will deteriorate Change the position of the fan Air flo...

Page 11: ...ilt in with the mechanical part on the left when viewed from the front do not change the direction of the fan motor 8 The fan label is on the outside and the wind direction is above Assemble the fan inside out with the label inside and change the wind direction Air flow Does not change the direction of the fan Does not change the direction of the fan Please install the machine part on the same pla...

Page 12: ... Block Diagrams SB30F N W SB30F N U Wiring Diagrams SB30F N W SB30F N U 3 CONNECTING DIAGRAM 9 RED BLACK BLACK BLACK RED RED BLACK BLACK BLACK BLACK WHIT PURPLE ORANGE BLUE BROWN BLUE RED ...

Page 13: ...net side Fixing Charge the battery It can not be removed from the cooling system Unable to fix Abnormal item 12V battery use 24V battery use Overvoltage Disconnection Charge the battery Test result Lower than DC9 6V LOW HIGH Compressor Stop Shorted Blower Fan motor Running Running 0Ω Ω DC17V 20 4V More than DC32V Ambient temperature 20 Ambient temperature 55 Stop Stop Stop Stop Stop Please use DC1...

Page 14: ...rmal Normal Replace the power supply NO Fuse of the DC cord is normality See page 15 Check 1 Is control assy lamp flashing Go to page 5 Error Display List LED flashing Yes Unable to fix Resistance of the EVA Thermistor Cabinet side Approx 2kΩ 10kΩ ２ EVA Thermistor is broken Ω It can not be removed from the cooling system Unable to fix NO Power supply output ｖｏｌｔａｇｅ To the Control assy DC12V 12V DC...

Page 15: ...some room for cool air YES Power supply output ｖoｌｔａｇｅ Approx AC15V 19V １ Lower than AC１5Ｖ Replace the power supply Output maladjustment Is the fan motor running NO Fan motor is broken Replace the fan motor YES Higher than 2 0A The compressor is locked or contaminated Lower than 1 7A Gas is leaking Compressor rated current Approx 1 7A 2 0A Replace the cooling system NO Normal See page 15 Check 2 I...

Page 16: ...l assy 0Ω Control assy is shorted Resistance at the control assy Dial position 5 OFF Approx 0 6kΩ 11 5kΩ Resistance value changes in the dial position See page 16 Check 6 Compressor keeps turning on and off at short intervals 2 to 3 seconds and the refrigerator does not cool down YES NO Repeat with and without output The output is constant from the power supply to the compressor according to the s...

Page 17: ...F Approx 0 6kΩ 11 5 kΩ 4 TROUBLE SHOOTING Approx 2KΩ 10KΩ 2 See page 15 Check 2 See page 15 Check 3 See page 16 Check 5 Cooling is weak Symptoms Checking items DC12V 24V Approx AC15V 18V 1 Does not get cold See page 11 Check the fuse by visual confirmation or check the continuity with a tester That the fuse is not broken See page 15 Check 1 Between outgoing cords from power supply by ditaching fro...

Page 18: ... Judge Approx AC15 19V Normal AC 0 V Approx AC15V less than Check 3 Resistance of the Compressor Checking points Measured between the terminal of the compressor Fig 3 Ambient temp 25 Test result 1 Judge Approx 1 23Ω Normal Ω Broken 2 1 Tester uses the accuracy 10mΩ or less 2 It can not be removed from the cooling system Unable to fix 0Ω Coil of compressor is short circuit １ 15 5 CHECK POINT CHECK ...

Page 19: ...p 25 Normal Broken Short Circuit Resistance value changes in the dial position 5 CHECK POINT CHECK METHOD Check the resistance at between terminals brown and blue Judge Test result Approx 2 kΩ 10 kΩ Ω Test result Dial position 5 OFF Measure the current value with a clamp meter on the motor cord Fig 4 It can not be removed from the cooling system Unable to fix 0Ω Check the output of the power suppl...

Page 20: ...n motor directly can check by connecting the DC12V directly Fig 8 Judge 5 CHECK POINT CHECK METHOD Test result Fan moter broken Does not move or rotates slowly Test result At DC12V DC12V Normal At DC24V DC24V Different from the above voltage Power Supply is broken 0V 17 Test result At DC12V DC12V Normal At DC24V DC24V Different from the above voltage Control assembly broken 0V Fig 7 Fig 8 Blower F...

Page 21: ... Remove six screws from the slide rail Fig 2 Remove eight screws from the case Fig 2 After peeling the mark off remove four screws from the handle Fig 2 Remove eight screws from the slide rail Fig 2 6 REPLACING PARTS 18 Assembly please refer to the next page LEVER UP Fig 1 LEVER DOWN Fig 2 SLIDE RAIL CASE DOOR ASSY SLIDE RAIL MARK HANDLE PACKING WORK TIPS LATCH ASSY ...

Page 22: ...n slide rail Push down the case and tighten the screws on slide rail 6 REPLACING PARTS 19 Please note below for assembling the drawer assembly WORK TIPS DRAWER ASSEMBLY HANDLE UP HANDLE DOWN The projection will come down The projection will come up CASE DOWN CASE UP Raise the handle slightly The projection is at the center New packing tightens the door closing but it gets to fit after a while So p...

Page 23: ... Fig2 Remove four power supply Fig2 How to Replace Control Assy Remove two screws Fig 3 Pull out the coupler Fig 3 How to Replace Fan Motor Blower Fan Blower fan Remove two screws Fig 4 Pull out the coupler Fig 4 Fan motor Remove two screws Fig 4 Pull out the coupler Fig 4 6 REPLACING PARTS 20 Fig 1 Fig 2 POWER SUPPLY CONTROL ASSY Fig 3 BLOWER FAN FAN MOTOR Fig 4 ...

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