Panasonic NR-BU302SERIESNR-BU342SERIES Bedienungsanleitung

Service Manual

Refrigerator

WARNING

This service information is designed for experienced repair technicians only and is not designed for use by the general public.

It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product.

Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or

repair the product or products dealt with in this service information by anyone else could result in serious injury or death.

There are special components used in this equipment which are important for safety. These parts are marked by in the Schematic

Diagrams, Circuit Board Diagrams, Exploded Views and Replacement Parts List. It is essential that these critical parts should be replaced

with manufacturer’s speciﬁed parts to prevent shock, ﬁre or other hazards. Do not modify the original design without permission of

manufacturer.

IMPORTANT SAFETY NOTICE

Product Color

Silver (S), Silver Blue (A),

White (W), Rose Stainless (N)

Destination

Hong Kong, Singapore (DBD),

Malaysia, Singapore (RBD),

Thailand, Vietnam, PGF, GULF,

India

CFCs have been used in refrigerant as refrigerator and the insulation materials for many years.

But it is now known that these compounds which once seemed so ideal for use as cleaning

agents and in refrigeration systems, destroy the earth’s ozone layer as a result, an international

body decided on a total worldwide ban of harmful CFCs by the end of 1995.

a violation of law

NR-BU302

SERIES

NR-BU342

SERIES

Order No. PHAT090503C3

(REVISION : JAN. 2010)

1. Safety Cautions for Repairing

When you repair refrigerator, please kindly take care of following cautions.

Before repairing unit, unplug supply cord

• Before you repair refrigerator, unplug the supply 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 voltage of 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 supply plug and earth.

• When install refrigerator, check condition of supply cord and plug.

• Wipe off the dust on plug.

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 condenser.

• 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.

a) Warning

b) Caution

2. Speciﬁcation and Components

2.1 NR-BU302 SERIES

Destination

Plug

Power Source

Specification

Capacity

Total volume

Freezer FC

Fresh food PC

Internal

dimention

Width x Depth x Height

472.6 mm x 336 mm x 497.8 mm

510 mm x 432 mm x 829.6 mm

External dimensions

Net weight

Side : 50 mm Min, Back : 100 mm Min, Top : 300 mm MinInstallation space

Energy Label

Temperature control Full-automatic temp. Control equipment

(FC: Control board,fc operation board PC : Closed temp. (Normal), GAS charge type )

Full-automatic (Forcibly evaporated in the air)Defrosting

Exterior finish (cabinet / door)

Vacuum formed ABS resinInner liner

Insulation

Sealed Unit

Compressor

DG57C96RAW5 DHS57C80RAW

Fin and tubeGroove tube

5TM181NHBYY 5TM189NFBYY

5TM718MFBYY

Evaporator

Single wall steel tube (zinc coat)Condenser

HFC-134a, 120 ± 5g 130 ± 5gRefrigerant charge

Electric Parts

Temp. baffle damper MM1-6180B, Closed temp. (normal) - 1.0 ± 1.5 C

D3D-121 (OMRON), 250V / 0.5A , Switch type S.P.-S.T.Door switch PC

Fan motor

FBA11J14VXA Rating DC14V /1.54W under Applied fan Ø90 mm. PROP FAN (Box type)

Split-phase induction motor, EQ-BR12 (12), 220V / 50Hz / 140W 2poles

E14 / 22, 250 V / 2ALamp receptacle

E14 / 22, 240 V / 15WLamp

PTC B=3850K ± 2% , R20=18.9KΩ± 1.8%FC sensor (FCC)

PTC B=3819K ± 2% , R10=3.899KΩ± 3%FC sensor (DFC)

PTC B=3435K ± 1% , R25=10.0KΩ± 3%Ambient temp. sensor (ATC)

PTH7M330MD2PTC relay

Motor protector

401405L, 400V / 4.0

µF

Running capacitor

Micro temp. : 250V / 10A / 73°CTemperature fuse

Model NR-BU302 SERIES

269L

90L

206L

Malaysia

SS, SA

S, A

S3P

240V, 50Hz

Sing-RBD

SS, SA

S, A

C2P

220-240V, 50Hz

Hong Kong

SS, SA

S, A

S3P

220V, 50Hz

Sing-DBD

SS, SA

S, A

S3P

230V, 50Hz

PGF

SS, SA, SW

S, A, W

C2P SHUKO

220V, 50Hz

GULF

SS, SA, SW

S, A, W

S3P

220-240V, 50Hz

Thailand

SS, SA, MN

S, A, N

C2P

220V, 50Hz

Vietnam

SS, SA, MN

S, A, N

C2P

220-240V, 50Hz

India

SS, SA

S, A

B3P

230V, 50Hz

600 mm x 615 mm x 1544 mm

SPCC-SD / Polyester Painting steel

Cyclopentane (DSD421.21) foam (shell and door)

DA57C11RAY5

55 kg 55 kg58 kg

Compressor Motor

5 Stars - Grade 1 2 Ticks - - Level 5 - 5 Stars

Contain - - - - - - - -

Lubricating oil 280±5 ml (Freol α-10)

Pipe Mullion Back

Colour Code

Colour Model

Conutry Code

2. Speciﬁcation and Components

Destination

Plug

Power Source

Specification

Capacity

Total volume

Freezer FC

Fresh food PC

Internal

dimention

Width x Depth x Height

472.6 mm x 432 mm x 497.8 mm

510 mm x 336 mm x 1019.60 mm

External dimensions

Net weight

Side : 50 mm Min, Back : 100 mm Min, Top : 300 mm MinInstallation space

Energy Label

Temperature control Full-automatic temp. Control equipment

(FC: Control board,fc operation board PC : Closed temp. (Normal), GAS charge type )

Full-automatic (Forcibly evaporated in the air)Defrosting

Exterior finish (cabinet / door)

Vacuum formed ABS resinInner liner

Insulation

Sealed Unit

Compressor

DG57C96RAW5 DHS57C80RAW

Fin and tubeGroove tube

5TM181NHBYY 5TM189NFBYY

5TM724MFBYY

Evaporator

Single wall steel tube (zinc coat)Condenser

HFC-134a, 130 ± 5g 140 ± 5gRefrigerant charge

Electric Parts

Temp. baffle damper MM1-6180B, Closed temp. (normal) - 1.0 ± 1.5 C

D3D-121 (OMRON), 250V / 0.5A , Switch type S.P.-S.T.Door switch PC

Fan motor

FBA11J14VXA Rating DC14V /1.54W under Applied fan Ø90 mm. PROP FAN (Box type)

Split-phase induction motor, EQ-BR12 (12), 220V / 50Hz / 140W,108W (Malaysia) 2poles

E12 / 22, 250 V / 2ALamp receptacle

E14 / 22, 240 V / 15WLamp

PTC B=3850K ± 2% , R20=18.9KΩ± 1.8%FC sensor (FCC)

PTC B=3819K ± 2% , R10=3.899KΩ± 3%FC sensor (DFC)

PTC B=3435K ± 1% , R25=10.0KΩ± 3%Ambient temp. sensor (ATC)

PTH7M330MD2

PTH7M330MC1

PTC relay

Motor protector

401405L, 400V / 4.0

µF

Running capacitor

Micro temp. : 250V / 10A / 73°CTemperature fuse

Model NR-BU342 SERIES

342L

90L

252L

Malaysia

SS, MN

S, N

S3P

240V, 50Hz

Sing-RBD

C2P

220-240V, 50Hz

Hong Kong

SS,MN

S, N

S3P

220V, 50Hz

Sing-DBD

SS, MN

S, N

S3P

230V, 50Hz

PGF

SS, SW

S, W

C2P SHUKO

220V, 50Hz

GULF

SS, SW

S, W

S3P

220-240V, 50Hz

Thailand

SS, MN

S, N

C2P

220V, 50Hz

Vietnam

SS, MN

S, N

C2P

220-240V, 50Hz

India

B3P

230V, 50Hz

600 mm x 615 mm x 1734 mm

SPCC-SD / Polyester Painting steel

Cyclopentane (DSD421.21) foam (shell and door)

DA66C12RAY5

59 kg 59 kg62 kg

Compressor Motor

5 Stars - Grade 1 2 Ticks - - Level 5 - 5 Stars

Contain - - - - - - - -

Lubricating oil 280 ml (Freol α- 10)

Pipe Mullion Back

Colour Code

Colour Model

Conutry Code

2.2 NR-BU342 SERIES

3. Schematic Diagram

3.1 NR-BU302 SERIES

3. Schematic Diagram

3.2 NR-BU342 SERIES

4. Performance Data

4.1 NR-BU302 SERIES

Control setting PC "3" "2" "1"

FC "3" "2" "1"

Mean freezer load temp. (°C) -22.0 ± 2.5 -19.0 ± 2.5 -15.0 ± 2.5

Mean fresh food compartment temp. (°C) 1.0 ± 2.5 4.0 ± 2.5 7.0 ± 2.5

51±0.5051±0.06)%(noitargninnuR

Power consumption (kWh / 24 hrs) --

Power consumption (kWh / 24 hrs) -2.0 or Under -

* Under on- load and ambient temperature 32 ˚C

Control setting PC "3" "2" "1"

FC "3" "2" "1"

Mean freezer load temp. (°C) -22.0 ± 2.5 -19.0 ± 2.5 -15.0 ± 2.5

Mean fresh food compartment temp. (°C) 1.0 ± 2.5 4.0 ± 2.5 7.0 ± 2.5

51±0.5051±0.56)%(noitargninnuR

* Under on- load and ambient temperature 32 ˚C

4.2 NR-BU342 SERIES

80.0 ± 15

2.0 or Under

5. Troubleshooting Guide

Cause : Not cool at all or not enough

Does the compressor

operating?

Check the Start

Control Circuit

Check pressure of the

motor compressor by

ohmmeter.

Compressor's

rotor lock

Replace the defect

of electric part

(Capacitor, Thermostat,

PTC Relay and Protector)

Check oil color

of the compressor

Check oil color

of the compressor

Check oil color

of the compressor

Replace the fan motor

Cannot repair

Rip/Burn coil

Replace the compressor

(Clean the pipe according

to guidance)

Replace the compressor

(Clean the pipe according

to guidance)

(Clean the pipe according

to guidance)

Check the Fan

Motor circuit

Clogged moisture

NO NO

YES

It's very few ice

No ice

or only at the inlet

YES

Gas spout out at both side

YES

Gas spout out at dryer side only

Gas spout out at evaporator side only

Gas leakage

Cutting cap tube

out of the dryer side

Check

the gas smell

Defect compressor

Clogged in the cap

tube system at the

evaporator side

Clogged in the cap

tube system at the

dryer side

Does the fan motor

operating?

Check the ice at the

evaporator?

Does any oil leak out?

Plug out to stop the

compressor and check

gas spout out by cutting

cap tube around 35 mm

from dryer

6. Parts Location

NR-BU302 SERIES, NR-BU342 SERIES

7.1

19 24 25

31.2

31.1

38 37

6.2

6.1 6.3 6.4

43.1

10.1

20.1

(NR-BU342 SERIES)

NR-BU302 SERIES (FOR GULF ONLY)

(NR-BU342SS,SW)

ONLY

C2P

S3P

12.1

6. Parts Location

NR-BU302 SERIES, NR-BU342 SERIES

50.3

50.1

50.2

FOR NR-BU302 SERIES

( )

FOR PGF / GULF

ONLY

74 74

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