Panasonic NR-AF172SNAE User manual

SPECIFICATION *)
Model
Voltage
Frequency
Input
Ampere
Oil Charge
Refrigerant Charge ( NON-CFC)
Temperature Control
Defrosting System
Cooling System ( Evaporator )
Dial Position
FC Room (
o
C
)
PC Room (
o
C
)
Blowing Agent
Thickness Insulation
Capacity (Liters)
Color Wide
Depth
Height
Net Weight **)
*) Specification subject to change without prior notice.
**) Weight and dimension are actual condition.
Manufactured for Panasonic Corporation
Manufactured by PT Panasonic Manufacturing Indonesia, Jakarta
Made in Indonesia
-9.0 ± 2.5
3.0 ± 2.5
Order No.: PMIRF1303026C3
Refrigerator
Manual Service
195 ± 5 ml ( Freol Alpha - 22 )
50 Hz
220 - 240 Volt ~
85 W
0.63 - 0.74 A
Direct Cooling ( Roll Bond Evaporator )
Manual Defrost Start - Manual Defrost Stop
Dial Adjustment
NR - AF172SNAE
NR - AF172SNWG
NR - AF172SNAE NR - AF172SNWG
80 ± 5 gram ( HFC-134a )
27 Kg
160 Liter ( FC = 19 Liter )
Polyurethane
40 mm
525 mm
1201 mm
Champagne ( Starlight Silver )
Cooling Performance
( AT 32
o
C )
510 mm
Cabinet Dimension
( External Dimension)
Cold
-5.0 ± 2.5
6.0 ± 2.5
Coldest
-16.0 ± 2.5
-3.0 ± 2.5
Colder
-1-

Content:
No.
Items
Page
I. Safety Cautions for Repairing 3
II. Part Identification 4
III. Dimension 4
IV. Installation 5
V. Schematic Diagram 5
VI. Wiring Diagram 6
VII. Cooling Circulation and Main Component Function 6
VIII. Repairing Devices Which are Exclusive - Use for HFC-134a Refrigerant 7
IX. Repairing Standard for Refrigerating Unit HFC-134a 7
X. Tool for Repairing Refrigerating Unit HFC-134a 8
XI. Refrigerating Unit Repairing Procedure 9
XII. Method to Repairing Refrigerating Unit 10 ~ 18
XIII. Safety Check 19
XIV. Instruction to Assembly Parts 20
XV. Part List 21 ~ 22
XVI. Packing Instruction 23
-2-

I. Safety Cautions for Repairing
When you repair refrigerator, please kindly take care of following cautions.
a) Warning
Before repairing unit, unplug service cord
● Before you repair refrigerator, unplug the service cord.
Use authentic parts when repairing
● When you replace the parts, please use authentic parts to replace defective parts.
Caution during brazing
● When you use touch for brazing, please ensure ventilation. Otherwise, you will be poisoned by
carbon monoxide.
Pay attention to using refrigerant
●If refrigerant touches fire, the gas becomes poisonous gas.
Pay attention to getting electricity shock
● When you check the voltageof terminal, please do not touch the electricity parts terminal.
● When you replace the parts, please wait three minutes at least for discharging capacitor.
Check safety after repairing
● Check the screws, parts, lead wires to take in place.
● And check the repairing portion whether circumferential parts are damaged or not.
● Check insulation resistance between service cord and earth.
● When install refrigerator, check condition of service cord and plug.
● Wipe off the dust on plug.
● Cutting and seal the electric device carefully.
b) Caution
Watch the hot parts
● During operation and after operation, compressor and pipes are hot.
● Also, under these condition, heater are hot.
● Do not burn your fingers when you touch it.
Pay attention to refrigerant
● Do not touch liquid refrigerant.
● Otherwise, your hands may be burnt.
Pay attention to edge of parts
● Otherwise, your fingers may be cut.
Pay attention to fins of evaporator and condensor
● Otherwise, your fingers may be cut.
Before transportation, adjust adjustable bolt
● Otherwise, the floor may be damaged.
Do not touch the pipe after brazing
● Otherwise, your hands may be burnt.
-3-

II. PART IDENTIFICATION
III. DIMENSION
BOTTLE SHELF
EGG SHELF
CRISPER
DOOR EVA.
LEG SHELL
ICE TRAY
BOX CONTROL
COVER CRISPER
TRIM EVA
ADJUSTER BOLT
UTILITY SHELF
EGG TRAY 8
CHILLED CASE
COVER LAMP
TRAY PC
(NR-AF172SNWG)
SHELF NET PC
(NR-AF172SNAE)
-4-

IV. INSTALLATION
V. SCHEMATIC DIAGRAM
Do not expose the refrigerator to the direct
sunlight and keep away from heat emitting
sources.
Placement, make sure that circulation of the
air where the Refrigerator should be at least
10 cm, both side 12 cm, and top 10 cm.
Make sure that the refrigerator is placed on a
hard and level surface to prevent vibration
and noise. If one of the legs does not touch
the floor, adjust the adjustable leg (Adjuster
Bolt) to stabilize it.
Caution:
Adjuster Bolt
Minimum
10 cm
Back side
More than
12 cm
More than
10 cm
More than
12 cm
- 5 -

VI. WIRING DIAGRAM
VII. COOLING CIRCULATION AND MAIN COMPONENT FUNCTION
FUNCTION OF EACH COMPONENT
1. COMPRESSOR
The function is to compress refrigerant gaseous so that make the temperature and pressure high.
2. CONDENSOR
The function is to lower down the refrigerant temperature, so it is liquified with same pressure.
3. PIPE MULLION DRYER
4. DRYER
5. CAPILLARY TUBE
6. EVAPORATOR
7. SUCTION PIPE
The function is to pass the low pressure gas
to compressor.
The function is to prevent from sweating.
It is contain silica gel and soft filter. The
dryer collect moisture and dust in the
refrigerant cycle, so that capillary tube will
not clogged up.
The function is to reduce the pressure of
liquid refrigerant so that make the
temperature of refrigerant low.
The function is to store cold air to refrigerator
so the refrigerant change phase become
gaseous with low pressure .
NR-AF172SNWG
NR-AF172SNAE
-6-

VIII. REPAIRING DEVICES WHICH ARE EXCLUSIVE - USE FOR HFC-134a REFRIGERANT
1.
a.
b.
2.
Important Notice:
1. Use repairing devices which are exclusive-use for HFC-134a refrigerating unit.
2.
When pipe cleaning is so need:
When pipe cleaning is required:
3. Never use blowing agent containing chlorine.
CFC-12, CFC-113, HCFC-22, HCFC-141b, R-502
4. Be sure to use dryer which is exclusive - use HFC-134a.
Otherwise refrigerant HFC-134a will chemically decompose.
5.
IX. REPAIRING STANDARD OF REFRIGERATING UNIT HFC-134a
1. OMust be done
∆Need to done if Compressor Oil dirty and Quality no good (color changed)
2. If gas charge fault cause solid material form, so compressor oil can not back flow to
compressor.
Clogged by liquid material
Gas Leakage*
Gas Charge fault ( example : CFC-12 ) CAN NOT REPAIRING
O
OO O
Clogged by solid
material Inside of Inlet Eva.
Inside of Outlet Dryer
O
∆
∆∆
∆
O
∆
∆∆
∆O O
O∆
∆∆
∆
O O
O
∆
∆∆
∆
OO∆ ∆∆
∆
O
O
O
OO∆ ∆∆
∆
OO
COMPRESSOR
FAULT
CAUSE
Compressor broken
Compressor stop
Motor winding broken
Noise up normal
Motor burning
Never re-use the pipes (example: charge pipe) which were once used for repairing CFC-
12 refrigerant unit.
PART MUST BE CHANGE
PIPADRYERCOMPRESSOR
This refrigerator use Compressor with Ester Oil. Ester Oil employed as new compressor oil
for refrigerant HFC-134a.
Ester Oil is characteristic of higher hygroscopicity. When moisture leaks into the
refrigerating unit, it will chemically react with the moisture and solid substance clogging
the pipe will form.
It is also characteristic of less stability when chlorine is contain. Ester oil will chemically
react with refrigerants containing chlorine and solid substance clogging the piping will
form.
From the time just after pipe cleaning is completed until the process of setting compressor
and dryer (just before vacuum pumping process).
Since refrigerant HFC-134a has higher degree of swelling to the resin, charge hose and
packing should be made from good materials. Therefor when HFC-134a refrigerating unit,
repairing method and repairing devices axcept for vacuum pump are different from
conventional method and devices. This is to avoid mixture of different refrigerants and
mixture of different oil.
From the process of removing compressor until the process of setting compressor and dryer
(just before vacuum pumping process).
Do not keep the pipe open to air more than 30 minutes. Rubber caps of compressor parts
should be removed just before installation. It should be finished within 30 minutes.
-7-

Caution:
-
-
1.
2.
3.
X. TOOL FOR REPAIRING REFRIGERATING UNIT HFC-134a
When the fitting for CFC-12 use is connected with the charge pipe (yellow), and then turn
the switch to CFC-12 use, the adaptor can be used for vacuum pumping of CFC-12
refrigeratirng unit.
Be sure connect the adaptor with vacuum pump, so it that the vacuum pump can be used
for both CFC-12 and HFC-134a.
Since the inside of manifold gauge and charge hoses are vacuum state after vacuum
pumping, the oil of vacuum pumping may flow into HFC-134a refrigerant unit. The adaptor
prevents the oil from flowing into the refrigerating unit.
Before running the vacuum pump, connect the charge pipe (yellow) with the fitting for HFC-
1354a use, and then turn the switch to HFC-134a use.
Conventional repairing devices for CFC-12 can not connect with repairing devices for HFC-
134A. Because the shape of fitting for HFC-134A (M10 x P1.5 mm) is different from
conventional ones.
Coupler Plug ( High Pressure Side ) 4mm
Coupler Socket
Coupler Plug ( Low Pressure Side ) 6.33 / 8mm
Process-Tube-Fitting
( 6.35 mm )
Process-Tube-Fitting
( 4 mm )
Charge Adaptor
Charge Cylinder
Blue
Yellow
Adaptor
Red
Manifol Gauge
Control Valve
Charge Hose
Vacuum Pump
(for CFC-12/HFC-134a)
Fitting for Vacuum Pump
Fitting for
CFC-12
Switch
( CFC-12 / HFC-134a )
Fitting for
HFC-134a
-8-

XI. REFRIGERATING UNIT REPAIRING PROCEDURE
STANDARD PROCEDURE
Diagnosing the trouble
Discharging the refrigerant
Removing the Compressor
Checking the compressor oil
A little discoloration
(light yellow) Severe discoloration (light brown)
Purging the pipe at
high-pressure side
Purging the pipe at
low-pressure side
Joining compressor
and accumulator assy'
Setting the compressor and the dryer
Vacuum pumping and pot the electric parts
Charging the refrigerant
Leakage test
Test Run
Pinch-off seal of charge pipes
Finish
Refer to the TROUBLESHOOTING
* For purging the pipe, use HFC-134a as liquid state.
* Never use HCFC-141b, HCFC-22 for purging.
* o not keep the pipes open to air more than 30 minutes.
These process in total should be finished within
30 minutes.
* Rubber caps should be removed just before
compressor is used. Never leave the compressor
without the caps and open to the air.
Be sure to connect the adaptor with vacuum
pump.
Charge cylinder should be exclusive - use for
HFC-134a.
This is to prevent different refrigerant
( CFC-12, HCFC-22, CFC-113, HFCFC-141b, R-
502) from mixing with HFC-134a.
IMPORTANT THINGS
-9-

XII. METHOD TO REPAIRING REFRIGERATING UNIT
CONDITION I. NOT COLD
Compressor not run
CONDITION II. COLD LESS
CONDITION III. VERY COLD
Both terminal direct
joining
Compressor run
Compressor not run
Compressor run Check with Ohm
Meter ( Tester ) Change Thermostat
OLP broken Check with M.Tester Change O L P
Starting PTC broken Check with M.Tester Change Starting PTC
Motor winding burn Check with M.Tester Change Compressor
Compressor noise but
not run
Power source broken
(Start Voltage not
enough )
Starting P.T.C. broken
Motor winding
disconnect
Starting Motor burn
Check Starting
P.T.C. Voltage under
load
Check with
M.Tester
Check with M.Tester
Repair Power Source
Change PTC Starting
Change Compressor
Change Compressor
Cooling Unit brooken Gas leakage Be found gas residu
Repair gas leakage and
re-charge
Gas nothing Spray with gas
Compressor run but
not compress
Short time Operation fault Thermostat broken Change Thermostat
Compressor running Long time
Out side Evaporator Evaporator closed by
frost to more
Evaporator not close
by frost
Very Cold Touch Defrost button
Cooling Unit broken Repair at cooling unit
portion
Joint pipe leakage
and clogged
The door have more
gap
Open the door very
long time
Cold Less
Check Cooling Unit Repair at cooling unit
portion
Adjust the door
Give the direction to
customer
Censor cappilary
Thermostat have
more gap
Thermostat broken
Thermostat not have
voltage
Assembly censor
cappilary Thermostat Check with M.Tester
Setting end of Censor
at center hole
Change Thermostat
Repair Thermostat
wiring
Check with M.Tester
CHECK CAUSE SUSPECT ANALYSIS ACTION
-10-