ENGEL MRFD-015 14L Fridge and Freezer User Manual

MODEL MRFD-015
SERVICE MANUAL SAWAFUJI ELECTRIC CO., LTD.

SPECIFICATIONS

MODEL| MRFD-015-AE (with thermostat dial type)
MRFD-015D-E (with thermostat switch type)
---|---
STORAGE VOLUME| 13 LITERS
EXTERIOR DIMENSIONS (WXHXD)| 442 X372 X 284 (mm)
INTERIOR DIMENSIONS (WXHXD)| 348 X 190 X 190 (mm)
RATED VOLTAGE| DC 12 V (Battery)
RATED CURRENT| 3.9 A
PROTECTION| 8A TUBE FUSE (built-in DC-plug, replaceable)
COOLING CAPACITY
REFRIGERATING
FREEZING| +5 °C ± 2°C AT AMBIENT TEMPERATURE 30°C
-15 °C ± 2 °C AT AMBIENT TEMPERATURE 30 °C
EXTERIOR FINISH| POLYPROPYLENE (Cabinet, Door)
INTERIOR FINISH| ALUMINUM ROLLBOND EVAPORATOR(In cabinet) AND POLYPROPYLEN(Door)
INSULATING MATERIAL| POLYURETHANE FORM(Cabinet,Door:CFC free)
COOLING UNIT| SWING MOTOR TYPE HERMETICALLY SEALED LINEAR COMPRESSOR, FORCED- AIR COOLED WIRE CONDENSER.
REFRIGERANT| HFC-134a
TEMPERATURE CONTROL| AUTOMATIC TEMPERATURE CONTROL WITH ELECTRONIC THERMOSTAT.
WEIGHT| 11.5 KG

WIRING DIAGRAM

TROUBLE SHOOTING

HOW TO CHECK EACH PARTS

1. CHECK SUPPLY VOLTAGE
   Measure input voltage at cigar lighter socket of car.
   Rated voltage is DC 12V.

2. CHECK FUSE
   Check inductance of 8A fuse in DC Input plug.
   If there is no inductance, replace the fuse with new one.

3. CHECK INPUT VOLTAGE OF SWING MOTOR
   Measure input voltage of Swing Motor between input terminals (yellow and black wires).
   Input voltage AC 7-8 V…… Normal
   Frequency 52-53 Hz…….. Normal

4. CHECK RESISTAN CE OF SWING MOTOR
   Disconnect yellow wire of Swing Motor input terminals and measure resistance between the terminals.
   Resistance
   ∞Ω ……….. Open circuit at Swing Motor
   0.3.2 Ω ………… Short circuit
   0.39 2 Ω ………… Normal

5. CHECK OSCILLATOR OUTPUT VOLTAGE
   Disconnect yellow wire at Swing Motor terminals and measure oscillator output voltage.
   AC 4.5 V over…… Normal
   AC OV……………… Oscillator failure

6. CHECK FAN MOTOR
   If fan motor does not run under normal output voltage from oscillator. Measure resistance of the motor.
   Resistance
   100 K Ω ………… Normal
   ∞Ω…………………. Open circuit of fan motor

7. CHECK VARIABLE RESISTOR
   Disconnect 2-pin coupler and measure resistance by use of tester.
   Resistance

∞ Ω ……Open circuit

8. CHECK THERMISTER
   Disconnect 2-pin couler and measure resistance of thermister.
   Resiistance
   Approx. 2.5K Ω (at 25°C )…… Normal
   ∞ Ω ……………………………………….. Open circuit

SERVICING OF EACH COMPONENT

HOW TO REPLACE COOLING UNIT

1. Take off door assembly
   (Refer to photo 1)

2. Take off latch (Refer to Photo 1)

3. 1. Take off cover.
   2. Take off screws.

4. The below-mentioned work is need only for the model MRFD-015-AE :
   Pull out thermostat dial. (Refer to photo 2)
   Notes: In order to prevent a possible scratch and damage on door, work on soft cloth is recommendable, as fridge might be placed upside down for this work.

5. The below-mentioned work is need only for the model MRFD-015D-E :
   1. Pull out 4 screws of bottom case and take off bottom case. (Refer to photo

3. 2.Take off 2 terminals of thermostat control switch.

6. Take off 2 fixing plates for condensor.
   (Refer to photo 4)
   Pull out 6 screws.

7. Cut off fastner. (Refer to photo 4)

8. Take off coupler for thermister (Refer to photo 5)

9. In case of MRFD-015-AE
   1. Take off fixing plate for power supply.
   2. Pull out 3 screws for fixing of condenser and case for power supply.
   (Refer to photo 16)
   In case of MRFD-015-D-E
   1. Take off 2 fixing plates for condensor
   (Refer to photo 6) 2. Take off fan motor

10. Take off oscillator (Refer to photo 7)
    Unlock 4 plastic fastners.
    (MRFD-015D-E only)

11. The below-mentioned work is need only for the model MRFD-015-AE :
    Take out powr supply (Refer to photo 8)![ENGEL MRFD 015 14L Fridge and Freezer

• Power Supply](https://manuals.plus/wp-content/uploads/2024/02/ENGEL-MRFD-015 -14L-Fridge-and-Freezer-Power-Supply.png)

  12. The below-mentioned work is need only for the model MRFD-015D-E :
      Take out oscillator (Refer to photo 9)![ENGEL MRFD 015 14L Fridge and Freezer

• Oscillator 2](https://manuals.plus/wp-content/uploads/2024/02/ENGEL-MRFD-015 -14L-Fridge-and-Freezer-Oscillator-2.png)

  13. Disconnect input code for swing motor.
      (Refer to photo 10)
      1. Pull out (+) side coupler (yellow code)
      2. either unscrew earth code (black), or cut off the connected part with earth code
      (MRFD-015-AE)

Replace old cooling unit with a new one following with the reverse order of disassembly.

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