Sears GR-051SF, GR-131SF User Manual

SAFETY PRECAUTIONS

1. Check if an electric leakage occurs in the set.

2. When servicing current applying parts, unplug prior to
servicing.

3. In case of testing with power injecting, wear rubber
gloves to prevent electric shock.

4. If you use any appliances, check regular current, voltage
and capacity.

5. Don't touch metal products in cold freezer room with wet
hand. It may cause frostbite.

SERVICING PRECAUTIONS

6. Prevent water flowing to electric elements in mechanical
parts.

7. When sloping the set, remove any materials on the set,
especially thin plate type(ex,: glass plates or books.).

8. When servicing evaporator part, wear cotton gloves
without fail. It is to prevent wound by sharp fin of
evaporator.

9. Leave a breakage freezing cycle to a heavy service
center. The gas in cycle inside may soil ambient air.

AIR RECHARGING IN COMPRESSOR

Test the refrigeration system by connecting it electrically
before refilling operation. This 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

SERVICE TUBE

EXTENSION

CHARGE TUBE FEMALE

EXTENSION HANSEN

MALE

HANSEN

SOLDERING

POINT

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)
Air evacuating from the system begins as 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

30 minutes. (Figure 4)

PRESSURE

GAUGE

Figure 1

Figure 2

Figure 3 Figure 4

-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
leak-finder. 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

vacuum operation is over, add the quantity in grams of R-

12 to the refrigeration system. Remember that every
system has an exact quantity of R-12 with a tolerance of
+5 grams than can be added. (Figure 5)

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 6)

FILLING OR VALVE TO BE

_ CHARGE TUBE OPENED WHEN

TO THE TO THE

REFRIGERATION CHARGE

SYSTEM CYLINDER

TO THE VALVE TO BE

VACUUM CLOSED

PUMP AFTER VACUUM

Figure 6

REFILLING

TO THE
R-12 CYLINDER

__ TO THE

= REFRIGERATION

SYSTEM

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-compresson

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 the quantity of R-12 established for the

system being charged. When the system is running, the
suction pressure must be stabilized from 0.30 to 0.6

atmosphere.

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AIR RECHARGING IN COMPRESSOR

Test the refrigeration system by connecting it electrically
before refilling operation. This 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 R134a 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)

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)
Air evacuating from the system begins as 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 4)

POINT TO BE

BROKEN

SERVICE TUBE

EXTENSION

Figure 1

CHARGE TUBE FEMALE

EXTENSION HANSEN

MALE

HANSEN

SOLDERING

POINT

Figure 2

MP

PRESSURE

GAUGE

Figure 3 Figure 4

-5-

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
leak*finder. 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

vacuum operation is over, add the quantity in grams of
R134a to the refrigeration system. Remember that every
system has an exact quantity of R134a with a tolerance of
+5 grams than can be added. (Figure 5)

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 6)

FILLING OR VALVE TO BE

_ CHARGE TUBE OPENED WHEN

TO THE TO THE
REFRIGERATION CHARGE
SYSTEM CYLINDER

TO THE VALVE TO BE

VACUUM CLOSED

PUMP AFTER VACUUM

Figure 6

REFILLING

TO THE
R134a CYLINDER

Figure 5

TO THE

REFRIGERATION

SYSTEM

In addition, check the graduated scale on the cylinder for
the quantity of R134a 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

R134a 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 R134a 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 the quantity of R134a established for the
system being charged. When the system is running, the
suction pressure must be stabilized from 0.10 to 0.4
atmosphere.

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SPECIFICATIONS

ITEMS SPECIFICATIONS

DOOR TYPE 1 DOOR

NET CAPACITY 94 l

CONDENSER TYPE WALL CONDENSER

(FLUSH BACK)

DEFROSTING SYSTEM MANUAL

TEMPERATURE CONTROL KNOB DIAL

PARTS IDENTIFICATION

EVAPORATOR(DoorInside)

- The heartof the refrigerator.

- It evaporates the refrigerant
fluid and thereby absorbs

heatfrom the surrounding.

ITEMS

INSULATION DO_OR

_ CABINET

EVAPORATOR

DIMENSION

NET WEIGHT

REFRIGERANT

VS Series

COMPRESSOR

LUBRICANT

NS Series
COMPRESSOR

SPECIFICATIONS

POLYURETHANE
POLYURETHANE

ROLL BOND TYPE

463(W)X830(H)X500(D)mm

22 Kg

R-12(67g) R-134a(60g)

HTS-150 FREOL a 22G
(200cc) (200cc)

HTS-150 FREOL a 22G
(180cc) (180cc)

THERMOSTAT

Regulates the operation of
the motor and controls the

temperature inside the
refrigerator.

ICE CUBETRAY(DoorInside)

Ice cube is easy to remove

from the tray

DRIP TRAY
Catches the water that

drips off the evaporator
when defrosting.

PLASTIC COATED
SHELVES
Have full width and can
slide out.

PVC BAR

Keeps any kinds of fruits

and vegetables.

NOTE : This is a basic model. The shape of refrigerator is subject to change.

SUPPORTER CAN
Keeps any kinds of bottles.

MAGNETIC GASKET

- Tight fitting door seal
keeps all the cooling
power locked inside,

- No hooks or latches.

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