LG GR-282MF Owner's manual

LG GR-282MF Owner's manual
SERVICING
PRECAUTIONS
vacuum operation is over, add the quantity in grams of
R-12 to the refrigerant system. Remember that every
system has an exact quantity of R-12 with a tolerance of
+5 grams that can be added. (Figure 4)
Air Recharging
in Compressor
Test the refrigeration by connecting it electrically before
refilling operation. It 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 BE
BROKEN
TO THE R-12 CYLINDER
CHARGE TUBE
EXTENSION
_=
J_
TOsTTHEEMR
EgRIGERAT ION
MALE HANSEN
Figure 4
SERVICE TUBE EXTENSION
Figure 1
SOLDERING POINT
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 5)
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)
FILLING OR
CHARGE TUBE
VALVE TQ BE OPENED
WHEN REFILLING
TO THE REFRIGERATION
SYSTEM
TO THE CHARGE
CYLINDER
VALVE TO BE CLOSED
AFTER VACUUM
puOMT_
TO THE VACUUM PUMP
cUUM
Figure 5
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 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 to the quantity of R-12 established for the
system being charged. When the system is running, the
suction pressure must be stabilized between 0.10 to 0.4
atmosphere.
PRESSURE
GAUGE
Figure 3
Air evacuating from the system begins so 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 60
minutes. (Figure 3)
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 leakfinder. 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
-3-
vacuum operation is over, add the quantity in grams of
R-134a to the refrigerant system. Remember that every
system has an exact quantity of R-134a with a tolerance of
+5 grams that can be added. (Figure 4)
Air Recharging
in Compressor
Test the refrigeration by connecting it electrically before
refilling operation. It 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-134a 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 BE
BROKEN
CHARGE TUBE
EXTENSION
_i
TO TiE R-134a CYLINDER
__
TyOsTTHEEMRE
FRIGERATiON
MALE HANSEN
Figure 4
SERVICE TUBE EXTENSION
SOLDERING POINT
Figure 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 5)
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)
FILLING OR
CHARGE TUBE
VALVE TO BE OPENED
WHEN REFILLING
TO THE REFRIGERATION
SYSTEM
TO THE CHARGE
CYLINDER
VALVE TO BE CLOSED
AFTER VACUUM
TO THE VACUUM PUMP
UM
Figure 5
In addition, check the graduated scale on the cylinder for
the quantity of R-134a 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-134a 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-134a 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 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 to the quantity of R-134a established for the
system being charged. When the system is running, the
suction pressure must be stabilized between 0.10 to 0.4
atmosphere.
PRESSURE
GAUGE
Figure 3
Air evacuating from the system begins so 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 60
minutes. (Figure 3)
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 leakfinder. 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
-4-
1. SPECIFICATIONS
1-1 GR-242M / MV/S/SV
ITEMS
FREEZER
SPECIFICATIONS
ITEMS
60_
SPECIFICATIONS
FREEZER
1 EA
REFRIGERATOR
2 EA
SHELF
NETCAPACITYREFRIGERATOR
(§/)
TOTAL
140_
200_
VEGETABLE TRAY
1 EA
DIMENSIONS (mm)
540(W)x607(D)x1407(H)
EGG TRAY
1 EA
NET WEIGHT (kg)
46
ICE TRAY
1 Pieces(PLASTIC)
COOLING SYSTEM
Fan Cooling
ICE BANK
1 Piece
TEMPERATURE CONTROL
Knob Dial
COMPRESSOR
RT.C Starting Type
Full Automatic
EVAPORATOR
Fin Tube Type
Heater Defrost
CONDENSER
Pipe on Sheet Type
With a Timer
REFRIGERANT
R-12 (140g)
OUT CASE
Coated SteeI Sheet
LUBRICATING OIL
HTS-95 (210cc)
INNER CASE
ABS
INSULATION
Polyurethane Foam
DEFROSTING
1-2 GR-282M I MV I S I SV
ITEMS
FREEZER
SPECIFICATIONS
ITEMS
60.12
SPECIFICATIONS
FREEZER
1 EA
REFRIGERATOR
3 EA
SHELF
NETCAPACITYREFRIGERATOR
TOTAL
170_
230_
VEGETABLE TRAY
1 EA
DIMENSIONS (mm)
540(W)x607(D)x1553(H)
EGG TRAY
1 EA
NET WEIGHT (kg)
48
ICE TRAY
1 Pieces(PLASTIC)
COOLING SYSTEM
Fan Cooling
ICE BANK
1 Piece
TEMPERATURE CONTROL
Knob Dial
COMPRESSOR
RT.C Starting Type
Full Automatic
EVAPORATOR
Fin Tube Type
Heater Defrost
CONDENSER
Pipe on Sheet Type
With a Timer
REFRIGERANT
R-12 (140g)
OUT CASE
Coated SteeI Sheet
LUBRICATING OIL
HTS-95 (210cc)
INNER CASE
ABS
INSULATION
Polyurethane Foam
DEFROSTING
-5-
1-3 GR-242MF / MVF / SF / SVF
ITEMS
FREEZER
SPECIFICATIONS
ITEMS
60_
SPECIFICATIONS
FREEZER
1 EA
REFRIGERATOR
2 EA
SHELF
NETCAPACITYREFRIGERATOR
(§/)
TOTAL
140_
200_
VEGETABLE TRAY
1 EA
DIMENSIONS (mm)
540(W)x607(D)x1407(H)
EGG TRAY
1 EA
NET WEIGHT (kg)
46
ICE TRAY
1 Pieces(PLASTIC)
COOLING SYSTEM
Fan Cooling
ICE BANK
1 Piece
TEMPERATURE CONTROL
Knob Dial
COMPRESSOR
RT.C Starting Type
Full Automatic
EVAPORATOR
Fin Tube Type
Heater Defrost
CONDENSER
Pipe on Sheet Type
With a Timer
REFRIGERANT
Rq34a (120g)
OUT CASE
Coated SteeI Sheet
LUBRICATING OIL
FREOL ¥_2G (210cc)
INNER CASE
ABS
INSULATION
Polyurethane Foam
DEFROSTING
1-4 GR-282MF / MVF / SF / SVF
ITEMS
FREEZER
SPECIFICATIONS
ITEMS
60.12
SPECIFICATIONS
FREEZER
1 EA
REFRIGERATOR
3 EA
SHELF
NETCAPACITYREFRIGERATOR
TOTAL
170_
230_
VEGETABLE TRAY
1 EA
DIMENSIONS (mm)
540(W)x607(D)x1553(H)
EGG TRAY
1 EA
NET WEIGHT (kg)
48
ICE TRAY
1 Pieces(PLASTIC)
COOLING SYSTEM
Fan Cooling
ICE BANK
1 Piece
TEMPERATURE CONTROL
Knob Dial
COMPRESSOR
RT.C Starting Type
Full Automatic
EVAPORATOR
Fin Tube Type
Heater Defrost
CONDENSER
Pipe on Sheet Type
With a Timer
REFRIGERANT
R-134a (120g)
OUT CASE
Coated SteeI Sheet
LUBRICATING OIL
FREOL ¥_2G (210cc)
INNER CASE
ABS
INSULATION
Polyurethane Foam
DEFROSTING
-6-
2. PARTS IDENTIFICATION
FREEZER
COMPARTMENT
Freezer Temperature
Control Dial
Freezer Shelf
-
Freezer Door Rack
Ice Tray
Ice Cube Box
REFRIGERATOR
COMPARTMENT
--
Egg Storage Rack
Refrigerator Temperature -Control Dial
Lamp --
Shelves
Refrigerator Door
Rack
--
Vegetable Drawer -Used to keep fruits
and vegetables, etc.
fresh and crisp.
Leveling Screws
NOTE : This is a basic model. The shape of refrigerator is subject to change.
-7-
3. DISASSEMBLY
3-1 HOW TO REPLACE THE DOOR OPENING TYPE
(when converting from the left-opening type to right opening type)
1, Separate the Cap Oand
Hinge Upper
2. Separating
the Freezer
Door _,
4. Separating
the Hinge Lower
@
3, Separating the Hinge-C Oand the Refrigerator
Door
5, Move the Position of Adjustable Screw
Assembly O:
6, Assemble
-8-
the Hinge Lower _.
7. Move the Cap _
Door.
Bracket O of the Refrigerator
8. Move the Cap _and
Assemble
the Hinge-C
O.
OI
9. Assembe the Door Stopper-F _ for Right
Opening Type.
10. Move the Cap _ and Assemble the Freezer
Door O-
11, Move the Pin Position
12. Assemble
_
of the Hinge Upper.
3-2 LAMP REPLACEMENT
1. Unplug the power cord from the outlet.
2. Remove refrigerator shelves.
3. Remove the lamp by turning it counterclockwise as shown
in the figure at right.
4. Assemble in reverse order of disassembly. Replacement
bulb must be the same specification as original.
-9-
the Hinge Upper _
and the Cap O_
4. ADJUSTMENT
4-1 COMPRESSOR
4-2-3 PTC-Applied
4-1-1 Role
• According to Starting
The compressor inhales low temperature and low pressure
gas evaporated from Evaporator of the Refrigerator, and
condenses this gas to high temperature and high pressure
gas, and then plays delivering role to Condenser.
Circuit Diagram
Method of Motor
OVERLOAD PROTECTOR
4-1-2 Composition
PTCT
The Compressor is Composed of Compressor Apparatus
compressing gas, Compressor Motor moving Compressor
Apparatus and Case protecting Compressor Apparatus
and Motor. There are PTC-Starter, and Over Load
Protector (OLP) in the Compressor outside. On the other
hand, because the Compressor consists of 1/1000ram processing
precision components and is sealed after producing without dust
or humidity, deaI and repair with care.
C ,,OMPRESSO
MOTOR
PTC STARTER
RSIR
HERMETIC
TERMINAL
Figure
21
4-1-3 Note to Use
(1) Be careful not to allow over-voltage and over-current.
(2) No Strike
4-2-4 Motor Restarting and PTC Cooling
(1) For restarting after power off during normal
Compressor Motor operation, plug the power cord after
5 min. for pressure balance of Refrigerating Cycle and
PTC cooling.
(2) During normal operation of Compressor Motor, PTC
elements generate heat continuously. Therefore,
if PTC isn't cooled for a while after power off, Motor
can't operate again.
If applying forcible power or strike (dropping or careless
dealing), poor operation and noise may occur.
(3) Use proper electric components appropriate to the
Compressor.
(4) Note to Keep Compressor.
If Compressor gets wet in the rain and rust in the pin of
Hermetic Terminal, poor operation and poor contact
may cause.
(5) Be careful that dust, humidity, and flux due to welding
don't inflow in Compressor inside in replacing
Compressor. Dust, humidity, and flux due to welding
which inflows to Cylinder may cause lock and noise.
4-2-5 Relation
of PTC-Starter and OLP
(1) If power off during operation of Compressor and power
on before PTC is cooled, (instant shut-off within 2 rain.
or reconnect a power plug due to miscennecting),
PTC isn't cooled and a resistance value grows. As a
result, current can't flow to the sub-coil and Motor can't
operate and OLP operates by flowing over current in
only main-coil.
(2) While the OLP repeats on and off operation about 3-5
times, PTC is cooled and Compressor Motor performs
normal operation.
4-2 PTC-STARTER
4-2-1 Composition
of PTC-Starter
(1) PTC (Positive Temperature Coefficient) is no-contact
semiconductor starting device which uses ceramic
material and the material consists of BaTiO3.
If OLP doesn't operate when PTC is not cooled,
Compressor Motor is worn away and causes circuitshort and fire. Therefore, use a proper fixed OLP
without fail.
(2) The higher the temperature is, the higher resistance
value becomes. These features are used as starting
device of Motor.
4-2-2 Role of PTC-Starter
4-2-6 Note to Use PTC-Starter
(1) PTC is attached to Hermetic Compressor used for
Refrigerator, Show Case and starts Motor.
(2) Compressor for household refrigerator applies singlephase induction Motor.
(1) Be careful not to allow over-voltage and over-current.
(2) No Strike
Don't apply a forcible power or strike.
(3) Keep apart from any liquid.
If liquid such as oil or water inflows into PTC,
PTC materials it may break due to insulation breakdown
of material itself.
For normal operation of single-phase induction motor, in
the starting operation flows in both main coil and subcoil. After the starting is over, the current is cut off in
subceil. The proper features of PTC play the above all
roles. So, PTC is used as a starting device of motor.
(4) Don't change PTC at your convenience.
Don't disassemble PTC and mold. If damaging to
outside of PTC-starter, resistance value alters and poor
starting of compressor motor may cause.
(5) Use a properly fixed PTC.
-10-
4-30LP
(OVER
LOAD
PROTECTOR)
4-3-1 Definition of OLP
CONTACTING
POINT
COVER
(1) OLP (OVER LOAD PROTECTOR) is attached to
Hermetic Compressor and protects Motor by cutting off
current in Compressor Motor by Bimetal in the OLP in
case of over-rising temperature.
(2) When over-voltage flows to Compressor motor, Bimetal
works by heating the heater inside OLP,
and OLP protects Motor by cutting off current which
flows to Compressor Motor.
BIMETAL
J_
.oNTO
TERMINALS
4-3-2 Role of OLP
(1) OLP is attached to Hermetic Compressor used to
Refrigerator and Show Case and prevents Motor Coil
from being started in the Compressor.
-
BIMETAL
s c ' ST
(2) Do not turn the Adjust Screw of OLP in any way for
normal operation of OLR
(Composition and connection Diagram of OLP)
HEATER_
Figure 22
5. CIRCUIT DIAGRAM
CIRCUIT DIAGRAM
BK
a
R
o
p
_
BO
_<_ LAM_
o
wH
_N
ZI
(GN/YL}
(A)
_
'
wo=_
(B)
BL
__,_,_ , _o
' _:
/
I
I
I°_ I
Igl.',_
_
PK
COMP
ff_L.7_]
I°__±[@_'_")-CAPACITOR pAf_T
• FUSE & FIR
BK
PTCSTARTER
_THpART
SPECIFICATION
• F [ R PART CAN BE APPLIED
BY THE REQUEST OF BUYERS
• CAPACITORS,
THE PLUG TYPE,
AND COMP' EARTH PART ON
CIRCUIT DIAGRAM ARE SUBJECT
TO CHANGE IN DIFFERENT
LOCALITIES
WH : WHITE
BL : BLUE
RD : RED
PK : PINK
BK : BLACK
BN : BROWN
PR : PURPLE
YL : YELLOW
GY : GRAY
GN : GREEN
BO : BRIGHT ORANGE
NOTE : 1. This is a basic diagram and specifications vary in different localities.
2. F.I.R. lamp and capacitor are option parts.
-11-
3854J D 1031H
6. TROUBLESHOOTING
6-1 COMPRESSOR
AND ELECTRIC
Power Source.
COMPONENTS
Remove the PTC-Starter
from the Compressor
and measure the voltage
between Terminal C of
Compressor and
Terminals 5 or 6 of PTC.
_+10%)?
(Rating Voltage
j_
No Voltage.
YES
,_ OLP disconnected?
_
Replace OLR
condition.
Check connection
L_
in the range of Rating
_1_ Applied
voltage isn't
Voltage _+10%.
Check the
resistance of
Motor
Compressor.
Check the
resistance of
PTC-Starter.
among M-C, S-C and
M_S in Motor
heck the resistance
Compressor.
_I
_
to use a regular
Trans.
dvise the customer
N_O
Replace Compressor.
YES
Reconnect.
YES
of two terminals in
PTC-Starter.
heck the resistance
_I
NO
_-
PTC-Starter.
Replace
YES
[_
a regular OLR
Check OLR
,_
heck if applying
OLP works within
30 sec. in forcible
OLP operation by
turning instant power
on and off.
II
YES
b
Replace OLR
/ YF.£
_
O.K.
_,
'r
NO
[_
Check
starting state.
starting voltage after 5
min. for balancing cycle
cooling
.f pressure
easure and
minimum
the PTC.
.[_
Components start in
the voltage of Rating
Voltage _+10%
below.
r
NO
-12-
F[_
h
6-2 PTC AND OLP
Normal operation of
Compressor is
impossible or poor.
Observation value is
220V/50Hz : 22§ +30%
Separate the PTC
from Compressor and
measure the
resistance between
No. 5 and 6 of PTC
with a Tester or
Whistone Bridge.
(Figure 24)
Check another
electric components.
115V/60Hz : 6.8§ +30%
240V/50Hz : 33§ +30%
127, 220V/60Hz :
22§ +30%
The resistance value is
0 or several
Replace
PTC.
hundreds § .
The value is ; -.
Separate the OLP
from Compressor and
check resistance
value between two
terminals of OLP with
a Tester. (Figure 25)
Check another
electric components.
Replace OLE
Figure
Figure 24
6-3 DEFROST
TIMER
Normal operation of
the Defrost Timer is
mposs b e.
Position the Cam Shaft to
F
/
-_
_The
the point of first 'click'
sound and check the
resistance is i ~
_E_._
the point of second 'click'
sound and check the
current between terminals
k
_
_
,.._[Replace
the
v Defrost Timer.
i
current between terminals
No. 1 (brown) and
No. 2 (bright orange). Next,
position the Cam Shaft to
No defrosting.
Poor cooling,
25
No. 1 (brown) and
No. 4 (black). (Figure 26).
_,{ Turn the Cam Shaft.
_[
The resistance is
O§ or variable.
Replace the
Defrost Timer.
.Check the other
_
T;OV,%O_a_2%iK_b°ut
i
.o
electric components.
Replace the
}_L Defrost Timer.
--fSihthkhe'd °;tt3t'ceS
t_
Shaft and Body softly.
Cam Shaft_
%
i
_q L_
-13-
Replace the
Defrost Timer.
I_oud "click" sound.
_
Figure 26
i
i
6-4 ANOTHER
ELECTRIC
COMPONENTS
• Cooling is impossible
Compressor
doesn't run.
I I_
the following
Check if current flows to i
components.
Cause
,
I
a. Thermostat
_ Poor contacting and
gas leakage.
b. Starting devices
_-Shorted
c. OLP
I_ Poor contacting
or shorted,
d. Compressor
Coil shorted.
col!
e. Defrost Timer
_Poor contacting
or shorted.
f. Circuit part_
Running state of
Compressor is poor.
Check a starting
voltage.
current flows
to starting devices.
r
_
Poor contacting
_
and broken.
/
Check current flowing
in sub-coil of
Compressor.
r
_
Shorted.
Check capacity of OLR _{
Lack of capacity.
/
• Cooling
ability
Replace
each
component,
Low voltage.
i
Checkif
or broken.
r
The items described
I
_
Coil of Motor
above are normal.
_
Check current flowing
I
of the door S/W.
_
Poor contacting.
Check current flowing
in the Fan Motor.
_
Coil is shorted.
Compressor.
Raise the voltage,
i
i
e e
onen
ac
i
ii-i
the
compressor.
Replace
is poor
Fan motor
doesn't run.
_
_--_
Much frost are sticked
to the EVAPORATOR.
I
Check the running
condition of Timer.
"
Replace
--
each component.
(Coil
is shorted.)
Running
is poor.
Check current flowing
of the following
components.
• Control DEE ASM
each component.
Replace
Shorted.
of the following
-]_ components.
•
• L-Cordcurrent flowing
Check
• TE-Plate Heater
-14-
i
each
Replace
component.
i
6-5 SERVICE
DIAGNOSIS
CHART
COMPLAINT
POINTS TO BE CHECKED
REMEDY
Cooling is
• Is the power cord unplugged from the outlet?
• Plug to the outlet.
impossible.
• Check if the power S/W is setted to OFE
• Set the switch to ON.
• Check if the fuse of power SAN is shorted.
• Replace a regular fuse.
• Measure the voltage of power outlet.
• If voltage is low, wire newly.
Cooling ability
• Check if the set is placed close to wall.
• Place the set with the space of about 10cm.
is poor.
• Check if the set is placed close to stove, gas
• Place the set apart from these heat
cooker and direct rays.
appliances.
• Is the ambient temperature high or
the room door closed?
• Make the ambient temperature below.
• Check if putting in hot foods,
• Put in foods after they get cold.
• Did you open the door of the set too often
• Don't open the door too often and close
or check if the door is closed up?
• Check if the Thermostat is set to "WARM"
it firmly,
• Set the knob to "NORMAL"
Foods in the
• Are foods placed in cooling air outlet?
• Place foods in high temperature section.
Refrigerator
are frozen.
• Check if the Thermostat is set to "COLD".
(Front Part)
• Set the knob to "NORMAL"
• Is the ambient temperature within 5°C?
• Set the knob to "WARM"
Dew or ice
forms in the
• Are watery foods kept?
• Seal up watery foods with wrap.
• Check if putting in hot foods.
• Put in foods after they get cold.
chamber of
• Did you open the door of the set too
• Don't open the door too often and close
the set.
Dew forms
in the Out Case.
often or check
if the door is closed up.
• Check if ambient temperature and humidity
are high.
it firmly.
• Wipe dew with a dry cloth. This happening
is solved in low temperature and humidity
naturally.
Abnormal
• Is the gap in the door packing?
• Fill up the gap.
• Is the set positioned in a firm and even place?
• Adjust the Adjust Screw, and position
• Does any unnecessary objects exist
in the back side of the set?
• Remove the objects.
• Check if the Drip Tray is omitted.
• Check if the cover of mechanical room
• Place it on an original position.
noise generates.
in the firm place.
• Place the cover at an original position.
in below and front side is taken out.
To close the door
is not handy.
• Check if the door packing becomes dirty
• Clean the door packing.
by filth such as juice.
• Is the set positioned in a firm and even place?
• Position in the firm place and adjust the
• Are too much foods putted in the set?
Adjust Screw.
• Keep foods from reaching to the door.
Ice and foods
• Check if the inside of the set becomes dirty,
• Clean the inside of the set.
smell unpleasant.
• Did you keep smelly foods without wraping?
• Wrap smelly foods.
• It smells plastic.
• The new products smell plastic, but it is
removed after 1_2weeks.
-15-
6-6 REFRIGERATING
• Troubleshooting
CYCLE
Chart
CAUSE
STATE OF
STATE OF THE
THE SET
EVAPORATOR
TEMPERATURE
OF THE
COMPRESSOR
REMARKS
PARTIAL
LEAKAGE
Freezer and
Refrigerator
don't get cold
normally,
Low flowing sound of
Refrigerant is heard and
frost forms in inlet only
A little high
more than
ambient
temperature,
• A little Refrigerant
discharges.
* Normal cooling is possible
when injecting Refrigerant
of regular amount.
m
WHOLE
LEAKAGE
Freezer and
Refrigerator
don't get cold
at all.
Flowing sound of Refrigerant
is not heard and frost isn't
formed,
Equal to ambient
temperature.
* No discharging of Refrigerant.
* Normal cooling is possible
when injecting Refrigerant
of regular amount.
o
PARTIAL
CLOG
Freeze room and
Refrigerator
don't get cold
normally,
Flowing sound of Refrigerant
is heard and frost forms
in inlet only.
A little high
more than
ambient
temperature.
° Normal discharging of
refrigerant.
* The capillary tube is faulty.
WHOLE
CLOG
Freezer and
Refrigerator
don't get cold.
Flowing sound of Refrigerant
is not heard and frost isn't
formed.
Equal to ambient
temperature.
* Normal discharging
Refrigerant.
Cooling operation
stops periodically,
Flowing sound of Refrigerant
is not heard and frost melts,
Low than
ambient
temperature
• Cooling operation restarts
when heating the inlet of
capillary tube.
Freezer and
Refrigerator
don't get cold.
Low flowing sound of
Refrigerant is heard and
frost forms in inlet only.
A little high
than ambient
temperature,
• The pressure of high
pressure part in
compressor is low.
No compressing
operation,
Flowing sound of Refrigerant
is not heard and no frost,
Equal to ambient
temperature,
° No pressure of high pressure
part in compressor.
rm
>
©
©
m
-_
-_°3
MOISTURE
CLOG
O
COMPO mO RESSION
-0-n
;om
mo
c0-4
__._ NO COMPO m RESSION
Z
•
of
Leakage Detection
Observe discharging
point of refrigerant which may be in oil discharging
Whether Compressor
runs or not.
YES
forms or not in
Whether
frost
Evaporator.
part in compressor and hole of evaporator.
No frost or form's [ or not.
[ n net on y
Whether oil leaks
J
4,
Normal amount
i
amount of Refrigerant.
Normal formed frost
Moisture Clog.
i
Faulty I
Compressor.
i
Observe the discharging
I
_tNo or much amount
YES
'n'ectRefrigerantt°
i
Compressor and check
cooling operation.
_T
Check Comprossor
Clogged by dust.
i
I Normal
formed
frost in Evaporator
-16-
}1_ Gas leakage,
i
(Check the leakage point)
•
General Control of Refrigerating
NO.
ITEMS
WELDING
ROD
Cycle
CONTENTS
AND SPECIFICATIONS
(1) H 30
• Chemical Ingredients
Ag: 30%, Cu: 27%, Zn: 23%, Cd: 20%
• Brazing Temperature: 710-840°C
(2) Bcup-2
• Chemical Ingredients
Cu: About 93%
P: 6.8-7.5%
The rest: within 0.2%
REMARKS
•Recommend H34 containing 34% Ag in the
Service Center.
• Brazing Temperature: 735-840°C
FLUX
• Ingredients and how to make
Borax 30%
Borax 35%
Fluoridation kalium: 35%
Water: 4%
Mix the above ingredients and boil until
they are transformed into liquid.
DRIER
ASM
(1) Assemble the drier immediately
after unpacking.
(2) Keep the unpacked drier at the temperature
of 80-100°C.
• Don't keep the drier in a outdoor because
humidity damages to it.
VACUUM
(1) When measuring with pirant Vacuum
gauge of charging MIC, vacuum
degree is within 0.5 Tom
(2) If the vacuum degree of the cycle inside is
10 Torr. below for low pressure and 20 Torr.
for high pressure, it says no vacuum
leakage state.
(3) Vacuum degree of vacuum pump must be
0.05 Torr. below after 5 min.
•Apply M/C Vacuum Gauge without fail.
•Perform vacuum operation until a proper
vacuum degree is built up.
• If a proper vacuum degree isn't built up,
check the leakage from
the Cycle Pipe line part and
Quick Coupler Connecting part.
4
•Make amount for only a day.
Holding period: 1 day
•Close the cover of container to prevent dust
putting in the FLUX.
• Keep it in a stainless steel container.
(4) Vacuum degree must be same to the
value described item (2) above for more than
20 min.
DRY AND
AIR
NITROGEN
GAS
(1) The pressure of dry air must be more
han 12-16Kg/cm 2
(2) Temperature must be more than
-20- -70°C.
(3)Keep thepressureto 12-6Kg/cm 2 also
when substituting
dryairforNitrogenGas.
6
NIPPLE
AND
COUPLER
PIPE
7
(1) Check if gas leaks with soapy water.
(2) Replace Quick Coupler in case of leakage.
(3) When using couplers, use applicable them in
accordance with Refrigerant.
• Put all Joint Pipe in a clean box and
cover tightly with the lid so that dust or
humidity is not inserted.
-17-
• Check if gas leaks from connecting part of
Coupler.
7-2 GR-282
* Option
Reversible Door : 283D, 282H
FIR Lamp : 409G
Deodorizer : 604E
Steel Shelf: 136A, 136C, 136E
Plastic Shelf: 149A, 149B, 149C
Lock : 282J
I
- 20 -
-21 -
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