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.
DESTINATION .........................3
Refrigerant; HFC-134a
Refer to "HFC-134a COOLING UNIT" Service Manual for handling this refrigerant.
ASSEMBLING PROCEDURES OF MAIN PARTS AND CAUTIONS .............................................................12
COOLING UNIT ..............................................................................................................................................18
REPLACEMENT PARTS LIST .......................................................................................................................20
SHARP CORPORATION
1
SJ-37M
SJ-41M
INSTALLATION
Free standing type
To ensure adequate ventilation for this refrigerator, install with 6 cm space at the rear and both sides, with a minimum
space of 9 cm above the refrigerator.
6cm6cm
This refrigerator shall be used under the ordinary place condition between +5˚C and +38˚C of ambient
temperature, and also not be left under -10˚C for long days.
To be used this refrigerator within the range of the rated voltage ±6%
9cm
CAUTIONS AND INFORMATIONS
In case of following troubles, the cause is not related with the failure of refrigerator.
Please mention the correct way to the customer for the use of refrigerator when the repairing.
1. Some foods froze in the refrigerator compartment.
Do not place food directly in front of cold air outlet.
This may lead to the food freezing.
2. Some plastic parts were cracked or split.
Some household cleaning chemicals may affect the internal food liner and plastic parts
resulting in splitting or cracks occurring.
When cleaning all plastic parts inside this refrigerator, only use diluted dishwashing liquid
(soapy water). Make sure that all plastic parts are thoroughly rinsed with water after cleaning.
cold air flow
IN
OUT
3. IT IS NORMAL for the refrigerator to produce the following sounds.
Cracking or crunching sound;
Sound produced by expansion and contraction of inner walls and internal parts during cooling.
Squeaking sound;
Sound produced by expansion and contraction of internal parts.
Sound of flowing fluid (gurgling sound, fizzing sound);
Sound of refrigerant flowing in pipes (sound may become louder from time to time).
Delay time : 4m20s/3m37s(50/60Hz)
Lamp socket—250V 1AE-14(Hard plastic body type)
Lamp—240V 10WE-14
CompressorFL1568SD220-240V/50HzCooling capacity : 188W (50Hz)
Main coil : 13.3Ω
Aux. coil : 25.6Ω
(at 25˚C)
Common
SJ-38M
SJ-42M
Aux. coil
Main coil
Starting relayPET0SAT—22 Ω 300V
Overload relay(Protector)1.8C36A1—Open/ Close : 130/60˚C
WIRING DIAGRAM
Be sure to replace the electrical parts with specified ones for maintaining the safety and performance of the set.
Figure W-1. Wiring Diagram
7
SJ-37M
SJ-41M
E.V. cover ass'y
Fan motor
F-thermostat
Def thermo. ass'y
Thermo. fuse ass'y
Def. heater ass'y
Door switch
C (NEUTRAL)
2 (PUSH OPEN)
1 (PUSH CLOSE)
R lamp box ass'y
Lamp 10W
Lead EV-cover ass'y
FM
L
3
1
2
Lamp socket
Terminal box
Defrost timer
TM
1
5
2
6
3
7
4
8
121
121
2
1
5
2
6
3
7
4
8
2
BL-2
(OR-1)
SB-1
BR-2
1
2
3
4
GY-1
OR-1
R-1
BR-1
Y-1
BL-1
BK-1
W-1
(W-1)
Y-2
(SB-1)
1
2
3
4
(Y-1)
(Y-2)
(BK-1)
(R-1)
GY-2
Cabinet ass'y
BROWN
BLUE
GRAY
EARTH
GY
: GRAY
BR
: BROWN (live)
OR
: ORANGE
Y
: YELLOW
R
: RED
P
: PINK
BL
: BLUE (neutral)
BK
: BLACK
SB
: SKY-BLUE
G-Y
: GREEN-YELLOW (earth)
W
: WHITE
Source plug / cord
Figure W-2. Electric Accessories Layout
Overload relay
(Protector)
1
E
BL
Starting
relay
Terminal block
Compressor
C
M
A
8
FUNCTIONS
1. ADJUSTABLE TEMPERATURE CONTROL
(1)Temperature control of freezer
Thermostat (senses freezer temperature) operates on ON/OFF switch over to control the compressor and cool
air circulating fan , 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.
SJ-38M
SJ-42M
KNOB
PURPOSE
SETTING
MAX
(Coldest)
For making ice rapidly or fast freezing.
When restocking with fresh food.
MED
For normal freezing.
For storing frozen food for a short period (up to one month).
Figure F-1.
MIN
When frozen food or ice cream is not stored.
(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 fan motor, 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.
KNOB
PURPOSE
SETTING
MAX(Coldest)
For keeping freshness of food longer.
When the refrigerator does not provide sufficient cooling.
MED
For normal operation.
When the refrigerator provides excessive cooling.
Figure F-2.
MIN
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 "MAX", some foods stored may freeze.
In this case adjust control set back to the "MED" position.
When refrigerator temperature control sets to the "MAX", some foods stored in Fresh case may also
become frozen.
(3) Reference value of temperature
SETTING OF
FREEZER TEMP.
CONTROL KNOB
Freezer
temperature
MAX
(Coldest)
Approx.
-21
MEDMIN
Approx.
-18
Approx.
-15
SETTING OF
REFRIGERATOR TEMP.
CONTROL KNOB
Refrigerator
temperature
Fresh case
temperature
MAX
(Coldest)
Approx.
0
Approx.
-3
MEDMIN
Approx.
3
Approx.
1
Approx.
Approx.
6
4
The values shown above refer to the case where the
freezer temp. control knob is set at "MED".
The values shown 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.
9
SJ-37M
SJ-41M
2. DEFROSTING
(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.
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.
OperationElectric diagramDescription
1. Cooling
(Normal)
Defrost thermostat ONCompressor running
Timer motor running
Thermostat
Timer contact
Thermo. fuse
Defrost heater
(2)Where is melted frost brought
1. Melted frost is brought into the evaporating pan at
the back of the set and is evaporated here by the
heat of compressor.
2. Be sure to use Evaporating pan as inserted so as
to be level with the outer case.
The integration timer integrates running
time of the compressor. When it reaches
cycle time of defrost timer, the timer
contact is changed to start defrosting.
TMCOMP
2. Defrosting
(Time 20 to 30 min.)
3. Drain
(Time approx. 5 min.)
SOURCE
Defrost
thermostat (ON)
Figure F-3.
Defrost thermostat ONCompressor stops
Timer motor stops
ThermostatTimer contact
Thermo. fuse
TMCOMP
SOURCE
Defrost heater
Defrost
thermostat (ON)
Figure F-4 .
Defrost thermostat OFFCompressor stops
Timer motor running
ThermostatTimer contact
Thermo. fuse
TMCOMP
SOURCE
Defrost heater
Defrost
thermostat (OFF)
Timer motor
Timer motor
Timer motor
Compressor
Compressor
Compressor
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.
When the defrost thermostat becomes
OFF, the timer motor starts running.
During the operation time (delay time
of defrost time)
defrosted water is
drained outside the refrigerator.
4. Restart
(Time approx. 5 min.)
Figure F-5.
Defrost thermostat OFFCompressor running
Timer motor stops
ThermostatTimer contact
Thermo. fuse
TMCOMP
SOURCE
Defrost heater
Defrost
thermostat (OFF)
Figure F-6.
10
Timer motor
Compressor
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. And the timer motor
starts running. (Figure F-3.)
(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.
SJ-38M
SJ-42M
Hot pipe
Figure F-7
4. INSPECTION OF INITIAL STARTING
(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.
4 It 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.
11
SJ-37M
SJ-41M
ASSEMBLING PROCEDURES OF MAIN PARTS AND CAUTIONS
CAUTION: DISCONNECT THE UNIT FROM THE POWER SUPPLY BEFORE ANY REPAIRING.
1. R-AIR GUIDER ASSEMBLY
(1) Forming sensor of Damper thermo.
After forming, fix it to the refrigerator.
A-sealer ag1
R air guider
Figure A-1
mm
1
++
5
mm
1
8
Damper thermo.
Dial sealer
Damper
thermostat
+
10 2 mm
Thermo. cap. sealer
A-sealer ag3
A-sealer ag2
Less than 160 mm
Stick thermo.
cap. sealer
(2) Sticking sealers to R air guider.
A-sealer
ag1
R air guider
R air guider
R air guider
NOTE
Minimum bending radius is R5mm.
Less than 12 mm
There should be no gas leak by reforming of sensor tube.
A-sealer
ag1
A-sealer
ag2
Dial sealer
Figure A-2
A-sealer
ag1
DATUM
DATUM
A-sealer
ag3
R air guider
8mm
OVERLAP
A-sealer
ag1
214mm
OVERLAP AREA
Figure A-3
12
SJ-38M
E.v cover sealer C
E.v cover sealer G
E.v cover sealer A
E.v cover sealer B
E.v cover
[back side]
STICK START
STICK START
STICK START
SJ-42M
2. E.V COVER ASSEMBLY
E.v cover
F-thermostat
E.v cover sealer C
Defrost thermo.
ass’y
L-band C
Propeller fan
100
Fan clamp
E.v cover
sealer C
Fuse ass’y
Figure A-5
Figure A-4
Fan motor
holder A
Motor cushion
Fan motor holder B
Fan motor
U-sealer
handle
Lead EV-cover
ass’y
E.v cover
sealer A
E.v cover
sealer B
C-insu sealer drr
2-1.Caution when removing E.V cover assembly
Be careful for removed Tapping screw not to fall to
the lower duct hole.
If Tapping screw falls, Damper thermo. in the
refrigerater comartment will be locked, and it will
become the cause of failure.
Tapping screw
E.v cover assembly
Duct hole
Figure A-5
2-2. Assembling procedures
(1) Sticking of Sealers to E.V cover
Figure A-6
(2) Fixing of Fan motor and Fan
(2)-1 Stick U-sealer handle to Fan motor holder A.
Fan motor holder A
C
13
U-sealer handle
0 1mm
SEC. C-C
Figure A-7
+
7 2mm
+
C
U-sealer handle
SJ-37M
SJ-41M
(2)-2 Insert the terminals of Lead EV-cover ass'y to
Fan motor.
(2)-3 Fix two Motor cushions to Fan motor, and set it
at Fan motor holder A and B.
Then fix with Tapping screw.
Fan motor
holder B
Motor cushion
Fan motor
holder A
Tapping
screw
Fan motor
Lead EV-cover ass'y
BROWN
RED
Figure A-8
(2)-4 Set Fan clamp to Propeller fan 100 and insert
it to the shaft of Fan motor.
Fan clamp
D
Fan clamp
Propeller
fan 100
+
4 0.5mm
Shaft
Detail of D
Fan clamp
Propeller fan
Slit
Slit of each Fan clamp
and Propeller fan
should not be at same position.
Note
Propeller fan should not be
taken out from shaft when
pulled by 3 kgf.
Figure A-9
(3) Setting of Fan motor ass'y , Defrost thermo. ass'y and Fuse ass'y.
Tapping screw
25
20
Set metal side below
30
25
Z
G
40
Z
C-insu sealer drr
[back side]
AL tape
AL tape
AL tape
F
F
Fuse ass’y
L-band C
Defrost thermo.
20
Detail of G
Lead e.v cover
ass’y
E.v cover
sealer A
Fuse ass’y
C-insu sealer drr
SEC. Z Z
E.v cover
sealer C
25
Tapping
screw
AL tape
Defrost thermo.
ass’y
L-band C
AL tape
more than 3.5mmmore than 3.5mm
[front side]
CUT
SEC. F F
+
10 5mm
Not come out of claw.
Figure A-10
14
SEC. B B
B
B
F-thermostat
(4) Inserting of pins
Fastening band a
SJ-38M
SJ-42M
Fan motor 1 , 5
WIRE COLOR FOR FAN MOTOR
100-110V : WHITE
127V : YELLOW
220-240V : BLUE
1234
5678
F-thermostat 6
(BROWN, inserted)
Note Pins should be inserted surely,
and check by pulling it.
Figure A-11
(5) Setting of F-thermostat
(5)-1 Form capillary tube of F-thermostat.
(5)-2 Insert terminal of Lead EV-cover ass'y.
23mm
F-thermostat 2
(RED, inserted)
Defrost thermo. 3 (PINK)
Fuse 8 (WHITE)
Fuse 8 (BLACK)
Defrost thermo. 7 (BLUE)
After inserting, fix with vinyl tape.
Vinyl tape
Figure A-12
(5)-3 Set to E.V cover.
20mm
Figure A-13
(6) Banding connectors.
E.v cover assembly
14mm
Note
・Bending radius of capillary
tube should be R5mm to R10mm.
(from Cabinet)
Figure A-14
(from Defrost heater)
After connecting,
1. Attach the inner side of two connectors each other.
2. Band these connectors by the Fastening band A.
Figure A-15
Fastening band a
8P-connector2P-connector
15
SJ-37M
Drain support al
Fixed parts
Drain support al
Def.heater ass’y
Drain support al
Heater cover
Protrusion parts
Protrusion part of Drain support al(2 pcs.)
Heater cover
Def. heater ass’y
SJ-41M
3. DEFROST HEATER
(1) Taking-out Evaporator
(1)-1. Take out E.v cover ass'y (Fig. A-16).
Evaporator
Food liner convex part
Fig. A-16
(1)-2. As shown in Fig. A-17, pull the upper part of
Evaporator toward you, pull it diagonally so that
the pipe of Evaporator does not contact the convex
part of food liner.
Food liner convex part
(2) Replacement of Def. heater ass'y.
(2)-1 Take Drain support al off from the food liner.
Fig. A-19
(2)-2 Raise the protrusion part of Drain support al.
Then remove Heater cover.
Evaporator
Pipe
Fig. A-17
(1)-3. As shown in Fig. A-18, bend the removed
Evaporator horizontally so that Defrost heater can
be replaced easily.
NOTE: When pulling Evaporator and bending the
pipes, pay attention so as not to break and
deform the pipes. Still, take care not to hurt
yourself by fin of Evaporator.
Evaporator
Fig. A-20
(2)-3 Open Def.heater fixed part of Drain support al to
the right and left, then remove Def.heater ass'y.
Fig. A-18
Fig. A-21
16
(2)-4. Replace Def. heater ass'y with new one.(2)-6. Stick the longer wire to the Drain support by
aluminum tape
[back side]
[bottom side]
A
A
Sec. AA
(W25 X L40)
top edge
Drain support al
Heater cover
Heater cover
Def.heater ass’y
Def.heater ass’y
c
d
Sec. BB
B
B
aluminum tape (2 pieces), and wind vinyl tape
(2 pieces) to lead wires of Def. heater ass'y by
Heater cover
Def.heater ass’y
Drain support al
aluminum tape as shownin Fig. A-24.
Fig. A-22
SJ-38M
SJ-42M
(2)-5. Bend a and b of Drain support al to right angle
(90˚) to set Def. heater ass'y. (Fig. A-23)
This side is longer wire
a
Drain support al
Def.heater ass’y
This side is shorter wire
b
Fig. A-23
Fig. A-24
(2)-7. Set Heater cover on Drain support, and bend top
edge c and d to outside as shown in Fig. A-25.
Fig. A-25
(2)-8. Set the assembly above on the food liner by fixing
a protrusion.
(3) Installing of Evaporator
(3)-1. Install Evaporator as shown in Fig. A-16 in the
reverse order of Fig. A-17.
(3)-2. Correct the deformed fin.
NOTE
1. When installing Evaporator, take care not to
deform significantly and break the pipes.
2. Take care not to damage the lead wires and hurt
yourself by the fin of Evaporator.