OUTLINE OF PRODUCT.......................................................................................................................................2
DESIGNATION OF VARIOUS PARTS ..................................................................................................................4
LIST OF ELECTRICAL PARTS ............................................................................................................................. 5
ASSEMBLING PROCEDURES OF MAIN PARTS AND CAUTIONS ..................................................................11
COOLING UNIT ...................................................................................................................................................17
REPLACEMENT PARTS LIST ............................................................................................................................18
Refrigerant; HFC-134a
Refer to "HFC-134a COOLING UNIT" Service Manual for handling this refrigerant.
DESTINATION ............................. F
In the interests of user-safety (Required by safety regulations in some
countries) the set should be restored to its original condition and only
parts identical to those specified should be used.
Rated voltage(V)110
Rated frequency(Hz)60
Climate classST
Rated input of motor(W)170175180
Rated input of defrosting heater(W)137
Refrigerant (Charging quantity)HFC-134a(120g)HFC-134a(125g)
Net Weight(kg)798488
Power comsumption(kWh/month)818689
Energy factory(L/kWh/month) 6.86.77.0
Baffle opened 1.5˚C(at normal notch)
Baffle closed –3±1.5˚C
TimerType: TMDFX04FB2, Integration type
Cycle 10hours 50 min., Working time about 4min. 20sec.
Fuse ass'yThermo. fuse Type: SF70E 250V 10A Working temp. 70±2˚C
or MTG4A50072 250V 10A Working temp. 72±2˚C
Defrost thermostatType: US602S 250V 8A OPEN 10±3˚C CLOSE 1±3˚C
Door switch3 terminals push-button 250V 0.25A
Lamp socket250V 1A E-12(HARD PLASTIC BODY TYPE)
Lamp110V 10W E-12
Fan motor Type: MH15SXF-BJA7 100/110V 50/60Hz
CompressorType: GL-90BK
60Hz(OIL COOLING)
Output 225W
Main coil 1.40Ω
Aux. coil 3.535Ω(at 20˚C)
SJ-48G/D48G
SJ-51G/D51G
SJ-55G/D55G
Terminal
Starting relayUH-3012 or UH-3002 4.7Ω 180V
Overload relay
(Protector)
4TM783NFBZZ-51 or 53 OFF 120˚C ON 61˚C
Running capacitor20µF/180V
Defrost heater115V 150W
5
SJ-48G/D48G
THERMOSTAT
TIMER
(R)
(G)
(Bk)
THERMO.
FUSE
OVERLOAD
RELAY
DEFROST
HEATER
STARTING
RELAY
(P)
(W)
INTERIOR
LIGHT
FAN
MOTOR
(S-B)
(O)
DOOR SWITCH
DEFROST
THERMOSTAT
(Bk)
C
M
A
N
2PIN
PLUG/
CORD
(B)
COMPRESSOR
L
FM
TM
(Br)
RUNNING CAPACITOR
CONNECTED IN TERMINAL BOX
CONNECTOR
G
Br
O
Y
R
P
B
Bk
S-B
W
: GRAY
: BROWN
: ORANGE
: YELLOW
: RED
: PINK
: BLUE
: BLACK
: SKY-BLUE
: WHITE
SJ-51G/D51G
SJ-55G/D55G
WIRING DIAGRAM
Be sure to replace the electrical parts with specified ones for maintaining the safety and performance of the set.
Because these are important for maintaining the safety of the set.
Figure W-1. Wiring Diagram
6
SJ-48G/D48G
Fan motor
C1(LR-09-1V)
Defrost thermo.
F-thermostat
Thermo fuse
Defrost heater
Door switch
FREEZER
REFRIGERATOR
(R-Cbox ass'y)
(C-Part. ass'y)
(E.V cover ass'y)
MACHINE ROOM
Defrost timer
Lamp
C2(ELR-02V)
C3(ELR-06V)
C4(LR-09-1V)
3(Push close)
4(Push open)
(O)
Source cord
Overload
relay
Terminal cover
Starting relay
Compressor
CE-2CE-5CE-2
(G)
G
Br
O
Y
R
P
B
Bk
S-B
G-Y
: GRAY
: BROWN
: ORANGE
: YELLOW
: RED
: PINK
: BLUE
: BLACK
: SKY-BLUE
: GREEN-YELLOW
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
1
2
3
4
5
6
1
2
3
121
2
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
FM
3
1
4
1
L
3
2
4
1
TM
C
M
A
1
L
N
E
(G)
(P)
(B)
(Br)
(R)
(Bk)
(W)
(W)
(Y)
(O)
(B)
(S-B)
(R)
(Bk)
(G)
(Y)
(S-B)
(P)
(Br)
Running capacitor
SJ-51G/D51G
SJ-55G/D55G
Figure W-2. Electric Accessories Layout
7
SJ-48G/D48G
MIN
MED
MAX
FREEZER TEMP. CONTROL
Coldest
MIN
MED
CHILLED
ZONE
REFRIGERATOR TEMP. CONTROL
Refrigerator
temperature
Chilled room
temperature
CHILLED
ZONE
(Coldest)
MEDMIN
Approx.
0˚c
Approx.
-3˚c
Approx.
3˚c
Approx.
1˚c
Approx.
6˚c
Approx.
4˚c
The values shown above refer to the case where the
freezer temp. control knob is set at "MED".
SETTING OF
FREEZER TEMP.
CONTROL KNOB
Freezer
temperature
MAX
(Coldest)
MEDMIN
Approx.
-21˚C
Approx.
-18˚C
Approx.
-15˚C
KNOB
SETTING
MAX
(Coldest)
MIN
PURPOSE
For making ice rapidly or fast freezing.
For storing frozen food for a short period (up to one month).
When frozen food or ice cream is not stored.
For normal freezing.
MED
When restocking with fresh food.
KNOB
SETTING
MED
CHILLED
ZONE
(Coldest)
MIN
PURPOSE
For keeping freshness of food longer.
For normal operation.
When the refrigerator provides excessive cooling.
When the refrigerator does not provide sufficient cooling.
SJ-51G/D51G
SJ-55G/D55G
1. ADJUSTABLE TEMPERATURE CONTROL
(1) Temperature control of freezer
Thermostat (freezer temperature sensing thermostat) operates on ON/OFF switchover to control the compressor
and allows the freezer temperature to keep at a suitable temperature.
However adjust the freezer temp. control knob as follows depending upon the storing condition of foods.
Figure F-1.
(2) Temperature control of refrigerator
Damper-thermostat senses temperature of the refrigerator and changes the opening angle of the damper
automatically.
However, as the Damper-thermostat has no function to switch on or off the compressor and cool air circulating
fan, the freezer temperature control causes temperature in the refrigerator to vary to some extent.
However, adjust the refrigerator temp. control knob as follows depending upon the cooling condition.
FUNCTIONS
Coldest
Figure F-2.
NOTE:The refrigerator temperature is affected also by the freezer temperature. If the freezer temp. control
knob is set at the position "MAX", the temperature tends to be lower than the following values, and if set
at near the position "MIN", temperature tends to be higher.
If the refrigerator is operated for a long time with the freezer temperature control sets the "MAX"
position, foods stored in the refrigerator compartment may also freeze.
When refrigerator temperature control sets to the "CHILLED ZONE", some foods stored may freeze.
In this case adjust control set back to the "MED" position.
When refrigerator temperature control sets to the "CHILLED ZONE", some foods stored in fresh cases
may also become frozen.
(3) Reference value of temperature
SETTING OF
REFRIGERATOR TEMP.
CONTROL KNOB
The values tables above refer to the measurement carried out center area and 1/3 of overall height from the bottom at each
of the refrigerator and the freezer after machine has been operated at an ambient temperature of 30˚C with no food stored
and the door closed until the temperature is stabilized.
The values vary depending upon frequency of opening and closing the door, ambient temperature, amount of stored foods
and manner of storing foods.
8
2. DEFROSTING
OperationElectric diagramDescription
1. Cooling
(Normal)
2. Defrosting
(Time 20 to 30 min.)
3. Drain
(Time approx. 5 min.)
4. Cooling (start)
(Time approx. 5 min.)
The integration timer integrates running
time of the compressor. When it reaches
10 hours 50 min. at 50Hz, the timer contact
is changed to start defrosting.
When the defrost thermostat becomes
OFF, the timer motor at rest starts running.
During the operation time(4 min. 20 sec.
/50Hz) defrosted water is drained outside
the refrigerator.
Timer contact is changed to cooling operation
and the compressor starts running and
the timer motor stops.
Defrost thermostat contact becomes ON
when it's cooled. (FIgure F-3.)
Figure F-3.
Figure F-4 .
Figure F-5.
Figure F-6.
TMCOMP
Defrost thermostat ONCompressor running
Timer motor running
Timer contact
Defrost
thermostat (ON)
Defrost heater
Thermo. fuse
Comp ressor
Time r motor
SOUR CE
TMCOMP
Defrost thermostat OFFCompressor running
Timer motor stops
ThermostatTimer contact
Defrost
thermostat (OFF)
Defrost heater
Thermo. fuse
Comp ressor
Time r motor
SOUR CE
TMCOMP
Defrost thermostat OFFCompressor stops
Timer motor running
ThermostatTimer contact
Defrost
thermostat (OFF)
Defrost heater
Thermo. fuse
Comp ressor
Time r motor
SOUR CE
TMCOMP
Defrost thermostat ONCompressor stops
Timer motor stops
ThermostatTimer contact
Defrost
thermostat (ON)
Defrost heater
Thermo. fuse
Comp ressor
Time r motor
SOUR CE
Thermostat
The timer contact is changed to start
defrosting, the timer motor stops, and
power is supplied to the defrost heater.
It takes about 20 to 30 min. to defrost.
When little frosted the defrosting takes
little time.When much frosted, the
defrosting takes much time.
(1) No defrosting operation is necessary
No defrosting operation is necessary.
As this machine is so designed that a built-in
evaporator cools air and a fan circulates cooled air,
neither the freezer nor the refrigerator is frosted,
though the evaporator is frosted.
(2) Where is melted ice brought
1. Melted ice is brought into the evaporating pan at
the bottom of the set and is evaporated here by
the heat of sub condenser.
2. Be sure to use the evaporating pan as inserted
so as to be level with the outer case.
The frosted evaporator is defrosted automatically
due to the function of defrosting timer and heater,
requiring no defrosting operation.
(3) The following circuit diagrams in the table show automatic defrosting function of the refrigerator with
timer and defrost thermostat.
SJ-48G/D48G
SJ-51G/D51G
SJ-55G/D55G
9
SJ-48G/D48G
Hot pipe
(1) Inspection of cooling unit
1. Set the temperature control knob to "MAX" and check that the compressor starts to operate.
2. Depress the door switch to run the fan and check that cool air is blown out of the cold air outlet of the freezer and
the refrigerator.
3. When the compressor does not work, check that the timer is not set to "defrost" position.
4It takes about an hour and a half or two hours to put food in the refrigerator after starting operation.
NOTE:
After return the temperature control knob to "MED" position.
When the refrigerator is operated initially after installed, the compressor may vibrate excessively for 1 to 2 min.
However, vibration becomes normal if it is continuously operated.
(2) Inspection of defrost device
Operate the refrigerator for 20 to 30 min. and then check the defrost device in the following procedures :
Allow 5 min. to restart the compressor since immediate starting after stopping will cause unsmooth operation.
1. Turn the timer shaft clockwise with a screw driver.
At this time, make certains the timer clinks and the compressor stops.
2. After more than 5 min., turn the shaft further to operate.
Make certain cooling operation is started again.
NOTE:
It's not necessary to switch the timer by changing of source frequency (50Hz, 60Hz).
SJ-51G/D51G
SJ-55G/D55G
(4) As a reference to determine the causes of trouble, malfunction and phenomena are described below. Refer
to the following when repairing.
1. Disconnection of defrost heater
As off-cycle defrosting is performed, the defrosting time is extremely prolonged. Each time defrosting is started,
the freezer temperature rises and a portion of ice and stored foods are melted.
2. Melted thermo. fuse or opened-circuit due to the defect of defrost thermostat.
When the above mentioned trouble occurs in cooling operation, the timer motor does not run, defrosting will not
take place, and consequently freezing is caused. In the above mentioned condition, when the timer shaft is
turned by hand to defrost, the timer motor runs during the operation time. However, the motor stops from the
time when the contact is changed, and freezing causes.
NOTE:
As the thermo. fuse assembly is intended to prevent dangers, do not use it under shorted condition even for a
short period.
3. DEW PREVENTION
The hot pipe, namely D.P.-condenser, is arranged around the flange part of
cabinet and the C-partition plate, preventing dew from being generated on the
cabinet.
NOTE:
D.P.-condenser pipe may be felt hot if touched by hand while the compressor
is in operation.
If you are asked about this, please explain that the hot pipe serve to prevent
the dew generation.
4. INSPECTION OF INITIAL STARTING
Figure F-7.
10
ASSEMBLING PROCEDURES OF MAIN PARTS AND CAUTIONS
Lamp socket
Lamp
Warning label
R-temp. control knob
R-Cbox cover
Defrost timer
D timer lead ass'y
R-air guider A
RA-insulation
Damper
thermostat
A-sealer thermo. cap
Dial sealer
C-box base
Thermo. cap sealer
R-air guider B
A-sealer air guider B
A-sealer
RC-box
A-sealer
RC-duct
A-sealer air guider C
A-sealer air guider D
A-sealer air guider D
R-air guider A
A-sealer
thermo. cap
Dial
sealer
Start
Finish
datum
(all round)
RA-insulation
R-air guider A
R-air guider A
AA
SEC. AA
Insert RA-insulation
R-air guider A
A- sealer air guider C
Start
A-sealer
air guider B
Overlap
R-air guider B
R-air guider B
A-sealer
air guider D
CAUTION: DISCONNECT THE UNIT FROM THE POWER SUPPLY BEFORE ANY REPAIRING.
1. R-CONTROL COV. ASSEMBLY
SJ-48G/D48G
SJ-51G/D51G
SJ-55G/D55G
(1) Sticking of sealer
11
SJ-48G/D48G
R-air guider A
Bend the senser
tube of Damper thermostat
Stick thermo.
cap. sealer
Less than 130
Damper
thermostat
3
±1
5
±1
Less than 12
25
±2
NOTE
Minimum bending radius is R5.
There should be no gas leak by reforming of sensor tube.
Paper tape (40 x 100)
Start
A-sealer RC-duct
Overlap
BB
Overlap
C-box
base
A-sealer
RC-box
Start
datum
A-sealer
RC-duct
datum
A-sealer
RC-box
SEC. BB
C-box base
Damper thermostat
C-box base
R-air guider B
Screw
Fix with claw
A-sealer air guider D
SJ-51G/D51G
SJ-55G/D55G
(2) Forming sensor of Damper thermostat
(3) Setting of C-box base, Damper thermostat, R-air guider A and R-air guider B
12
(4) Fixing of Lamp socket, Defrost timer
R-C box cover
Claws (2 places)
Claws (2 places)
Set R-temp. control knob
Lamp
socket
Lamp
R-C box cover
Connect
D timer
lead ass'y
Screw
SKY-BLUE
insert Pin No.6
BROWN
Insert Pin No.7
Defrost timer
6
7
2
±1
4
±1
Stick Warning label
¿ • 10W
¨ª A
(5) Fixing of R-Cbox cover
SJ-48G/D48G
SJ-51G/D51G
SJ-55G/D55G
13
SJ-48G/D48G
E.V cover
E.V cover sealer AE.V cover sealer B
Overlap 10mm(min.)
E.V cover sealer EE.V cover
A
[Front View]
E.V cover
Along this edge
[View from A direction]
Fix E.V cover sealer E along the edge of E.V cover.
Fuse ass'y
Alminum tape
E.V cover sealer A
Fan motor
Motor cushion
Fan motor cushion B
Fan motor cushion A
Propeller fan 100
Fan clamp
E.V cover sealer D
E.V cover sealer C
E.V cover sealer B
Lead E.V cover ass'y.
F-thermostat
E.V cover sealer E
E.V cover
L-band C
Defrost thermo. ass'y
L-band C
SJ-51G/D51G
SJ-55G/D55G
2. E.V COVER ASSEMBLY
(1) Sticking of sealer to E.V cover
14
(2) Fixing of Fan motor and Fan
E.V cover
Motor cushion
Tapping screw
Fan motor cushion B
Fan motor
Fan motor cushion A
Fan clamp
Propeller fan 100
Fan motor
Motor shaft to be flush
with front surface of hub.
Lead wire “WHITE”
Fuse ass'y
Alminum tape
E.V cover
sealer D
DetailA
Bend this pin
DetailB
Fan motor cushion
Lead wires
DetailC
Set Lead wires of Defrost thermo. ass'y as shown.
BC
D
A
L-band C
Defrost
thermo. ass'y
L-band C
Fuse ass'y
Alminum tape
E.V cover sealer D
B
Cut off to
7mm or shorter
7mm
Thermo. sensing element side
(Silver metal)
Horizontally
DetailD
Fasten Defrost thermo. ass'y's
wires as bellow.
And set it inside of the four pins.
SJ-48G/D48G
SJ-51G/D51G
SJ-55G/D55G
(3) Wiring of Lead Wire
15
SJ-48G/D48G
Set surely edges of
these two ribs.
Color: REDColor: BROWN
Under 5mm
10mm over
Standard line
E.V cover
E.V cover sealer C
E.V cover
F-thermostat
Lead E.V cover
ass'y
Through between ribs
Inside of ribs
9 8 7
6 5 4
3 2 1
View from A
A
1. Lead E.V cover ass'y
2. Lead E.V cover ass'y
3. Pink lead of Defrost thermo. ass'y
4. Blue lead of Defrost thermo. ass'y
5. Lead E.V cover ass'y
6. Lead E.V cover ass'y
7. Black lead of Fuse ass'y
8. White lead of Fuse ass'y
9. No connect
SJ-51G/D51G
SJ-55G/D55G
(4) Setting of Lead E.V cover ass'y and F-thermostat