DAEWOO DWM-161C, DWM-162C, DWM-171C, DWM-172C Service Manual

Service Manual

Washing Machine

Model :DWM-161C/162C

DWM-171C/172C

DAEWOO ELECTRONICS CO., LTD.

✔

Caution

: In this Manual, some parts can be changed for improving, their performance without notice in the parts list. So, if you need the latest parts information,please refer to PPL(Parts Price List) in Service Information Center (http://svc.dwe.co.kr).

WASHING MACHINE

CCoonntteennttss

1. SPECIFICATIONS..................................................................................................... 2

2. EXTERNAL VIEW..................................................................................................... 3

3. PRINCIPLES OF OPERATION AND EXPLANA TION OF FUNCTIONS................ 4

4. DIRECTION FOR DISASSEMBLY AND ASSEMBLY ..............................................8

5. TROUBLESHOO TING GUIDE................................................................................. 11

6. EXPLODED VIEW AND PARTS LIST.....................................................................16

7. WIRING DIAGRAM..................................................................................................23

2

NO. ITEM SPECIFICATIONS

1 POWER VOLTAGE

SOURCE FREQUENCY 60Hz 50Hz

2 POWER PUMP 580W 550W

CONSUMPTION

NON PUMP 530W 500W 3 DIMENSION NET : 884X542X1020, PACKED UP : 898X558X1035 (WXDXH) 4 MACHINE PUMP NET : 35kg, PACKED UP : 37kg

WEIGHT NON PUMP NET : 34kg, PACKED UP : 36kg 5 WASHING COURSE STRONG, NORMAL 6 WATER LEVEL HIGH:80l, MEDIUM:70l, LOW:60

l

7 REVOLUTION WASH 100 rpm 100 rpm

PER MINUTE SPIN 1700 rpm 1400 rpm 8 TIMER WASH MAX. 15 min., Manual operation

SPIN MAX. 5 min., Manual operation

9 WASHER TYPE PULSATOR TYPE

10 SPIN TYPE CENTRIFUGALLY SEPARATED TYPE 11

MAXIMUM MASS

WASH 8.0 kg (DWM-160C) 10.0 kg (DWM-170C)

OF TEXTILE SPIN 7.0 kg

12 WATER SUPPLY MANUAL 13 SPIN RINSE O 14 OUTLET OF DRAIN HOSE REAR 15 LINT FILTER O

POWER SOURCE

SUFFIX

EXPLANATION

NON PUMP PUMP

AC 100V 50/60Hz J -

AC 110V 60Hz T TP

AC220V 50Hz N NP AC 220V 60Hz L LP AC 240V 50Hz M MP

AC 110/220V 50Hz D AC 127/220V 60Hz S -

1. SPECIFICATIONS

NOTE : Explanation table for suffix of names.

AC 110V AC 220V AC 127/220V AC 110/220V A C 220V AC 240V

Model Name Pump

DWM-XXXX N P

Power Source

3

2. EXTERNAL VIEW

Structure Of The Washing Machine

Control Panel (Panel b Ass’y)

11

LEVER WATER SUPPLY SELECTOR

Left : water supply in the W ASHTUB. Right : water supply in the BASKET SPIN.

22

INLET WATER

Connect inlet hose to supply water in the WASH TUB or BASKET SPIN.

33

WASH TIMER

Use to select the desired time for washing or rinsing.

44

WASH ACTION

Use to select wash action. (“STRONG”, “NORMAL”)

55

VALVE SELECTOR

Select “WASH, RINSE” for washing and rinsing, and “DRAIN” to drain the water . (In case PUMP MODEL turn on the drain pump) “OFF” to turn off the drain pump. (Only PUMP MODEL)

66

SPIN TIMER

Used to select the desired time for spinning.

4

FUNCTION

The main switch remains ON during the washing time set by turning the timer knob . At the same time, the internal switch T1 and T2 which provide power to W ASH MOTOR alternately at assigned Intervals. Select switch knob sets the wash type b y means of controlling the interval of internal switch contact.

STRUCTURE AND PRINCIPLE OF ACTIVATION

3. PRINCIPLES OF OPERATION AND EXPLANATION OF FUNCTIONS

Wash Timer

CIRCUIT DIAGRAM

5

FUNCTION

The spin timer is the switch providing pow er to the SPINMOT OR(DRAIN PUMP MOTOR) during the set spin dry time, and is a spring-type time switch comes on turning and those contact points comes off after the set time.

STRUCTURE AND PRINCIPLE OF ACTIVATION

1) The main shaft turns due to the unwinding force when the spin timer is turned, the spring wound with that force being delivered through each gear and the spring slowly unwinding at a speed finally controlled by the angle assembly.

2) The contact point Turns ON and the assembly angle is set in motion which is in the CAM groove in the OFF state, comes off the groove when the main shaft is turned to wind the spring. The contact point turns OFF, return to CAM groove when the spring unwind completely.

SAFETY DEVICE FOR BASKET SPIN

The BASKET SPIN is an apparatus which eliminates the water from the laundry through centrifugal separation generated by rapid re volution(approximately 1,700rpm for 60Hz). Accordingly, there are a DOOR SWITCH to cut off the power going into the DOOR SPIN is opened and a brake system to stop the rotating BASKET SPIN.

DOOR SWITCH

When the DOOR SPIN is opened during spinning, the DOOR SWITCH LEVER which sites atopt the DOOR SPIN falls off the contact, and cuts off the power going into the SPIN MO TOR.

Spin Timer

6

BRAKE SYSTEM

When the DOOR SPIN is opened, LINK BRAKE which connect to DOOR SPIN loosens. And then the BRAKE BAND touches the DRUM COUPLING assembly and stops the BASKET SPIN as it is pulled by the SPRING in the BRAKE FIX PLATE assembly.

BRAKE BAND GAP CONTROL METHOD

The BAND BRAKE works best when the gap between it and the DRUM COUPLING is about 2mm when the DOOR SPIN is closed. The BASKET SPIN stops slowly if the gap between the two is too narrow, the BASKET SPIN revolution is affected and the PLATE CONTROL WIRE may be adjusted to maintain the BRAKE BAND gap adequately.

W ASH DECELERATOR ASSEMBLY

The initial deceleration following the activation of the WASH MOTOR takes place through the PULLEY MOTOR and PULLEY PULSATOR, and the secondary deceleration is done by the gear in the GEAR HOUSING which also increases their revolution strength. This revolution speed and strength is delivered to the PULSATOR, which is then able to cause water current that is strong yet soft so that w ash loads are not damaged.

LINK BRAKE

BASKET SPIN

LINK WIRE

BRAKE WIRE (INNER WIRE)

MOTOR WASH

About 1,700rpm(60Hz)

1,400rpm(50Hz)

DWM-160C PULLEY PULSATOR About 330rpm(60Hz)

330rpm(50Hz)

DWM-170C

PULLEY PULSATOR

About 600rpm(60Hz)

600rpm(50Hz)

PULSATOR

About 100rpm(60Hz)

100rpm(50Hz)

DWM-160C

7

GEAR HOUSING ASS’Y

The GRAR HOUSING ASSEMBLY is a transmission device which turns the PULSATOR at 3.3:1 (DWM-160C) or 6:1 (DWM-170C) lowered speed through the gear unit assembly which receives power at the GEAR SHAFT UNIT.

1) The two sides of the GEAR SHAFT UNIT are supported by the OILLESS BEARING in the GEAR HOUSING ASSEMBLY.

2) The GEAR UNIT ASSEMBLY is connected to the GEAR SHAFT 1 and GEAR SHAFT UNIT by the GEAR and GEAR UNIT respectively.

3) The two sides of GEAR SHAFT 1 are supported by the OIL SEAL and OILLESS BEARING in the GEAR HOUSING ASSEMBLY.

BELLOWS ASS’Y

The wrinkled rubber device on the botton of the BASKET SPIN is called BELLOWS ASSEMBLY. It has a waterseal and a oilless metal inside to prev ent leakage and so that the BASKET SPIN may work smoothly.

Much lint may be obtained depending upon the kind of clothes to be washed and same of the lint may also be suc k to the clothes . To minimize this possibility, a lint filter is provide on the upper part of the FILTER OVERFLOW to filter the w ash w ater. Use of the lint filter during every wash is recommend.

CLEANING THE LINT FILTER

1) Remove the FILTER AS from the FILTER OVERFLO W b y

pressing it downwards.

2) Turn the FIL TER AS inside out, and w ash the lint off with water.

3) Return the FILTER AS it was, and fix the FILTER AS to the FILTER OVERFLOW.

STRUCTURE (D WM-160C)

STRUCTURE (D WM-170C)

Filter

DWM-170C

8

4. DIRECTION FOR DISASSEMBLY AND ASSEMBLY

1. Remove 3 screws on the PANEL B.

3. Remove 3 screws and CONTROL LEVER

2. Remove KNOB, wash timer and spin timer on the PANEL B.

Ass’y Panel Back

4. Remove 4 screws on the COVER BACK. 5. Separate LINK BRAKE and ASSEMBLY BRAKE WIRE.

Basket Spin

9

9. Remove 1 screw on the CABINET. 10. Separate HARNESS AS connectors.

6. Remove 1 bolt and nut on the upper side of the DRUM COUPLING AS.

8. Lift up the BASKET SPIN.

7. Remove the PLATE T on the TUB.

Ass’y Base Under

10

11. Remove a V-BELT from PULLEY MOTOR.

13. Remove 7 screws on the BASE UNDER ASSY.

15. Remove 3 bolts on the BASE UNDER, and remove the WASH MOTOR.

12. Turn over the washing machine.

14. Remove 3 scre ws on the BRACKET MOTOR, and remove the SPIN MOTOR.

16. Remove 1 scre w on the FIXTURE PUMP. (In case of pump model)

11

5. TROUBLESHOOTING GUIDE

PROBLEM

Pulsator does not rotate.

CHECK POINT CAUSE SOLUTION

Pull out the power plug to repair and make sure that the Washing Machine has been properly grounded.

NOTES

Concerning Wash

Is the Pow er properly connected? Reconnect the Pow er Cord.

Is there a whirring sound from the Wash Motor when turned on?

Is the Condeser properly connected?

Motor does not start due to opening the Condenser circuit

Is the Motor hot? (In case there is Thermal Protector)

Is the Wiring good? (Refer to the Wiring Diagram)

Is the contact of Wash Timer good? Defective Wash Timer

Defective Wash Motor

Power has been cut off by the Thermal Protector.

Improper wiring

Reconnect the Condenser.

Replace Wash Timer

Replace Wash Motor

Reload with proper wash load.

Wash restart when Motor cools.

Reconnect the wiring

Pulsator does not rotate smoothly.

Is the Wash Load appropriate?

Are the Pulsator and Motor Pulleys securely assembled?

Does the V -Belt slip?

Are there impurities between the Pulsator.

Revolution obstructed by impurities

Remove impurities after disassembling pulsator.

Defect of mechanical assembly

Worn out V -Belt

Tighten the screws fixed on the Pulleys.

Replace V -Belt

The wash load is more than 8.0kg (160C) or

10.0kg (170C)

YES

NO

YES

NO

YES

NO

YES

NO

YES

NO

12

PROBLEM CHECK POINT CAUSE SOLUTION

Concerning Spin

Keep the Door Spin closed during spin.

The contact Door Switch is open.

The Basket Spin does not rotate.

Is the Door Spin open?

Is there a whirring sound from the Spin Motor when turned ON?

YES

Pulsator. only rotates in one direction.

Is the wiring of Wash condenser properly connected?

Is the wiring of Wash Timer properly connected?

Improperly Wiring

Defective Wash timer Replace Wash Timer.

Reconnect the Wash Timer.

Improper Connection Reconnect

YES

NO

There is excessive noise during Washing

Are there strange noise from Tub when the Pulsator rotate?

Pulsator improperly assembled.

Something is in contact with the Pulsator Pulley or Motor Pulley or other rotating parts.

Adjust the parts so that there are no impurities in contact with rotating parts

Tighten the Pulsator fixing screw .

Impurites between Pulsator and tub

Remove impurities after disassembling Pulsator.

YES

NO

YES

NO

NO YES

Pulsator does not rotate smoothly.

Does the Gear Housing Shaft rotate properly when the Pulsator has been disassembled?

Worn out the Serration within the Pulsator.

Defective Gear Housing Replace Gear Housing As.

Replace Pulsator.

NO

YES

13

PROBLEM

The Basket Spin does not rotate.

There are strange noise and servere vibration during spinning.

CHECK POINT CAUSE SOLUTION

The Brake Band is touching the Drum Coupling Assembly.

NO

YES

NO

YES

Brake wire is too long.

Assemble after loosening LINK BRAKE and adjusting downward.

BRAKE SPRING is broken. Replace Brake Spring.

Pow er has been cut off b y the Thermal Protector

Is the Motor hot? (In case there is Thermal Protector)

Is the wiring good? (Refer to Wiring Diagram)

Improper wiring Reconnect wiring

Is the Door Switch Lever properly placed on the Door Spin?

Defective connection

Replace Door Switch or reshape the Lever.

Is the Door Switch terminal properly connected?

Improper wiring Reconnect the terminal.

Is the Contact of Spin Timer good?

Defective Spin Timer Replace the Spin Timer.

Defective Spin Motor

Basket Spin does not balanced due to wash load.

Reload the clothes and press down the Safety Cover into Basket Spin.

Tighten the Bolt Drum Coupling Assembly.

Is the assembly between the Drum Coupling Assembly and Spin Motor or Basket Spin loose?

Improper structural assembly

Is the Basket Spin itself well balanced?

Basket Spin unbalance

Replace Basket Spin.

Are clothes or the Safety Cover stick out from Basket Spin?

Reload the clothes so they are well balanced

Is the wash load well balanced?

Replace the Spin Motor.

Power restored when motor cools.

YES

NO

YES

NO

YES

NO

The Waterseal or the oilless metal in the Bellows Assembly worn out.

Replace Bellows Assembly.

14

PROBLEM CHECK POINT CAUSE SOLUTION

There is leakage during spinning.

Is the Bellows Assembly properly assembled?

The Waterseal or the Oilless Metal in the Bellows Assembly is worn out.

Replace Bellows Assembly.

Waterproofing not working due to defective assemb ly.

Re-assemble Bellows Assembly.

YES

NO

YES

Basket Spin does not stop with the Door Spin open

The Brake Band touches the Drum Coupling when the Door Spin open.

Brake Band is worn out.

Defective Door Switch

Is the electric connection of the Door Switch good?

Replace Door Switch

The contact of the Door Switch does not open due to deformity of the lever of Door Switch.

Replace Door Switch or reshape the lever of Door Switch.

Replace Brake Band or Brake Fix Assembly.

Brake wire is too short.

Replace after loosening LINK BRAKE and adjusting upward.

NO

Concerning Drainage (Pump)

PROBLEM

Drainage is not satisfactory

CHECK POINT CAUSE SOLUTIONPROBLEM CHECK POINT CAUSE SOLUTION

Is the height of the drainage area where the Drain Hose hangs over 1m?

The Drain Hose is too high.

Hang the Drain Hose lower .

Are there impurities on the Drain Strainer?

YES

NO

Impurities are obstructing drainage.

Remove out impurities on the drain Strainer

Impurities are obstructing drainage.

Are there impurities in the Valv e Housing or Inlet Joint?

Remove impurities or replace Valv e Housing or Inlet Joint.

Impurities are blocking the Drain Hose

Remove impurities

YES

NO

15

PROBLEM CHECK POINT CAUSE SOLUTION

Draining does not function during drain selecting

Is the Drain Selector in the DRAIN position

The position is fault.

Turn the Drain Selector to DRAIN.

Is the pump Motor wiring properly connected?

Defective Pump motor Replace Pump Motor

YES

NO

YES

Defective wiring Reconnect wiring

NO

Drain does not function during Spinning.

Are the wiring of the Spin Timer and the Pump Motor good?

Defective wiring Reconnect wiring

Is the Spin Timer’s contact good?

Defective Pump motor Replace Pump Motor

NO

YES

Defective Spin Timer Replace Spin Timer

NO

Concerning Drainage (Non Pump)

PROBLEM CHECK POINT CAUSE SOLUTION

NO

Drainage is not satisfactory.

Are there impurities on the Drain Strainer?

Impurities are obstructing drainage.

Are there impurities in the Valve Housing or Inlet Joint?

Remove impurities or replace Valve Housing or Inlet Joint

Impurities are blocking the Drain Hose

Remove impurities

Impurities are obstructing drainage.

Remove impurities on the Drain Strainer

YES

Water keeps draining during wash

Is the Drain Selector on the operation Panel at the DRAIN position?

There are impurities between the Valve Housing and Valve Bellows.

Remove impurities and replace Valve Housing.

Mismanupilation

Turn Drain Selector to WASH/RINSE position

NO