Samsung RL23DATS Bedienungsanleitung

MODEL:

RL23DATS RL23DATW

RL25DATS RL25DATW

RL28DATS RL28DATW

C C

SERVICESERVICE

MANUALMANUAL

Electric Refrigerator CONTENTS

PREVENTIVE ACTIONS 1

PRODUCT SPECIFICATIONS 2

ELECTRIC & COOLING PART SPEC. & CRITERION 3

STRUCTURE 4

COOLING SYSTEM CYCLE WORKFLOW 5

DIAGRAM CIRCUIT 6

WORKING PRINCIPLE & TEST METHOD OF KEY PARTS 7

TROUBLE ANLYSIS & SHOOTING 10

HOW TO CHANGE KEY PARTS 12

EXPLODED VIEW & LIST 14

CONTROL PANEL TROUBLE SHOOTING 24

CIRCUIT DETAILS

This represents the materials with regard to the A/C circuit and spare part safety.

Prior to repair, please pull the plug out of the socket from the wall to disconnect the

power to hold the human and wealth harmless.

1-2-1.Direct plug in-and-out is recommended when replacing the relay that attaches to

the compactor lead terminal. When inserting and pulling the plug, relay wobbling

will more likely destroy the compactor terminals or relay.

1-2-2.Restart is not allowed within 5 minutes after power off. Immediate plug in-and-out

will disable the restart.

Do not make any by-pass or circuit change attempt without manufacturer's prior

suggestion.

No prelonged cable or double terminal board is recommended.

For human safety, this procut must be properly earthed. But phone lines and gas

pipes are not recommended for earthing.

1. PREVENTIVE ACTIONS

1-1 Safety Precautions

Only qualified technicians who have full command and knowledge of the

cooling system and safety inspection are allowed to deliver the maintenance

service as specified on the manual.

Please be sure to keep the work place ventilated and safe as this product

adopts the combustible and explosive R600a refrigerant.

1-2 Preparations Before Maintenance

This represents the materials included in the appliance maintenance.

2. PRODUCT SPECIFICATION

Polyurethane foam (141B)

1 (Refrigerating compartment)

2 (Rear)

2 (Head)

ABS

SPEC

Item

Model

Power

AC 220V/50Hz

Compressor Model

Lube

Evaporator

Condenser

Drying filter

Capillary

Molecular sieve

SILK PIPE

Built-in

Temp.

Control

Start up relay

Freeze

Refrigerating

Deputy evap

Initial resistance

Model

SPEC

ON temp

OFF temp

Earthing

screw

Lamp

DC motor

E-magnetic

valve

Door light

switch

ID 0.72 L2800mm

Sensor 502AT

8100(ID A) 8100(ID B)

GQS70AA

ESTER OIL

3. SPEC. AND CRITERION OF ELECTRIC & COOLING PARTS

Cooling cycle

Electric spare parts

Capacitor

Overload

protector

11-19 9-16

B63-125

T0455

70-55 70-55

120-130 120-130

DC 12V 0.08A

240V 25W

220V 0.5A / 125V 1.5A

COPPER SCREW BSBN

4uF,400V

SDF0.83/2-3B

4. STRUCTURE

4-1 Product size

Unit:mm

CODE

MODEL A B C D E F G H I J K

RL23DAT*

RL25DAT*

RL28DAT*

604

698.4

766.4

854.4

898.4

42.7

1570

1658

1770

616.5

1528

1616

1728

368.5

1188

silver welding rod soldering

flash soldering (aluminium/braze)

5. COOLING SYSTEM CYCLE WORKFOLW

HOT-PIPE

EVAP-REF,ASS'Y

ACCUMULATOR

R CAPILARY

EVAP-FRE ASS'Y

PIPE CLUSTER,L

DRYER

PIPE-SUCT CONNECT

COMPRESSOR

PIPE-DISCHARGE

ASSY VALVE BISTABLE

PIPE CONDENSER,R

F CAPILARY

AC220-240V~/50Hz

MAIN CONTROL PCB

PANEL PCB

RED

FAN MOTOR

BLK

REF-SENSOR

R-EVAP SENSOR

F-SENSOR

DOOR SWITCH

YEL

WHT

BLU

RED

BRN

BLK

BLU

GRY

BRN

TRANSFORMER

GRY

RED

Y/GRN

EARTH BLU

RED

LAMP

W/BLK

YEL

VALVE-BISTABLE

CAPACTIOR

EARTH

COMPRESSOR

O/L RELAY

P.T.C RELAY

BRN-BROWN

GRY-GRAY

BLU-BLUE

BLK-BLACK

WHT-WHITE

YEL-YELLOW

Y/GRN-YELLOW GREEN

W/BLK-WHITE BLACK

6. DIAGRAM CIRCUIT

7-1 Compressor

7-2 Overload protector

7. WORKING PRINCIPLE & TEST METHOD ON KEY PARTS

The compressor motor, mounted directly to the

compressor and located inside a sealed steel

case, has two windings.

One is a start winding and the other a run winding.

The windings are connected together internally,

forming a common connection. A lead is connected

to each of the windings, and to the common

connection. These three leads are then connected

to glass-sealed terminals that extend through the

compressor case.

The terminals are clustered in al trangle ( pyramid )

pattern and, reading from left to right, are identified:

Start, Common and Run.

1) Measure the resistance of each winding of the

compressor.

a. Disconnect the power cord.

b. Remove the relay from the compressor.

C. Measure the resistance of each winding.

A. The highest resistance value is the measurement of

the "start" and "run" terminals whose windings are

connected in series.

B. The lowest resistance value is the measurement of

the "run" and "common" terminals.

C. The mid-level resistance

value is the measururement

of the "start" and "common"

terminals.

B + C = A

2) Measure each terminal and

ground with the ohmmetor

set to the highest range.

If a winding is found to be

either open or shorted to

ground, the compressor

has failed.

Operating principle Inspection method

Compressor Windings

Operating principle Inspection method

The overload protects the compressor motor by

responding to both the temperature and current.

The overload protector is basically made up of

a set of the contacts normally closed and the

bimetal element.

The overload, mounted externally and in direct

contact with the compressor case, is connected

in series with both windings of the motor.

If the motor fails to start for any reason, the heavy

locked rotor current will cause the bimetal element

to heat which then quickly flex, snapping the

contacts open and interruption current flow through

the motor.

Likewise, if the motor overheate to an unsefe leval,

the comination of current and temperature will cause

the bimetal to snap the contacts open, On cooling,

the bimetal flex back and snaps the contacts closed.

The motor will continue to cycle on the overload so

long as the oriqinal reason for tripping persists

1) Check for continuity with ohmmetor.

- If the overlosd is tripped, cheak continuity after

waiting until it has cooled, in the room ambient

before checking.

- Even though the continuity of the overload is

observed it is difficult to confirm that the overload

is operating within the specification limits.

If there is any doubt, replace it with a part with

identical specifications.

: An overload should NEVER be by-passed

in the circuit , not even as a temporary

measure until the proper replacement can

be installed.

Operating principle Inspection method

Unlike to other mechanical apparatus, this solid

relay has neither coils nor flexiable terminals.

The relay is made of a solid wafer situated

between the terminal linked poles. This wafer

will produce low resistance (5~23 ) under

room temperature.

When the compressor is initialized, the current

will run through the Run winding group and the

parralled relay as well as the Start winding group.

In the beginning, the increasing relay resistance

will lessen the current dramtically. The silm

current will keep the relay resistance high and

the relay open .

This relay is called PTC (Positive Temperature

Coefficiency) relay as the resistance will go up

with the increasing temperature.

This solid relay can also be tested by an

ohmmeter. The relay resistance tested under

room temperature must be within the range of

10% of the norminal value indicated on the

specified circuit diagram.

7-3 Relay

TERMINALS

WAFER

` `

7-4 E-magnetic valve

Operating principle Inspection method

The bistable two way T-piece e-magnetic

valve is under the control of the pulse

generator that outputs semi-wave DC pulse

power to scan the coils once every 30s~60s

with 4~10 pluse semi-waves.

The e-magnetic will reverse with changing

pluse direction.

Entrance

Exit 1

Exit 2

Connect the appliance to power, press

TEST key on the PCB:

If pressing RF , the gateway is from

Entrance to Exit 2;

If pressing FF , the gateway is from

Entrance to Exit 1.

`` `

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