Daewoo DWM-160C User manual

S/M NO. : DW160C0001
DAEWOO ELECTRONICS CO., LTD.
686, AHYEON-DONG MAPO-GU SEOUL, KOREA
C.P.O. BOX 8003 SEOUL, KOREA
TELEX: DWELEC K28177-8
CABLE: “DAEWOOELEC”
FAX: [phone]
TEL: [phone]
http://www.dwe.co.kr
PRINTED DATE: JUL.2001

Service Manual
Washing Machine
Model : DWM-160C
DWM-170C
DAEWOO ELECTRONICS CO , LTD

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WASHING MACHINE
CCoonntteennttss
1. SPECIFICATIONS..................................................................................................... 2
2. EXTERNAL VIEW..................................................................................................... 3
3. PRINCIPLES OF OPERATION AND EXPLANATION OF FUNCTIONS................ 4
4. DIRECTION FOR DISASSEMBLY AND ASSEMBLY ..............................................8
5. TROUBLESHOOTING 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:80 l , MEDIUM:70 l , 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 AC 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)
11LEVER WATER SUPPLY SELECTOR
Left : water supply in the WASH TUB.
Right : water supply in the BASKET SPIN.
22INLET WATER
Connect inlet hose to supply water in the WASH
TUB or BASKET SPIN.
33WASH TIMER
Use to select the desired time for washing or rins-
ing.
44WASH ACTION
Use to select wash action. (“STRONG”, “NORMAL”)
55VALVE 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)
66SPIN 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 WASH MOTOR alternately at assigned Intervals.
Select switch knob sets the wash type by 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 power to the SPIN MOTOR(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 revolution(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 MOTOR.
Spin Timer

6
BRAKE SYSTEM
When the DOOR SPIN is opened, LINK BRAKE which con-
nect to DOOR SPIN loosens. And then the BRAKE BAND
touches the DRUM COUPLING assembly and stops the BAS-
KET 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 main-
tain the BRAKE BAND gap adequately.
WASH 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 wash 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 prevent 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 suck to the clothes.
To minimize this possibility, a lint filter is provide on the upper part
of the FILTER OVERFLOW to filter the wash water.
Use of the lint filter during every wash is recommend.
CLEANING THE LINT FILTER
1) Remove the FILTER AS from the FILTER OVERFLOW by
pressing it downwards.
2) Turn the FILTER AS inside out, and wash the lint off with water.
3) Return the FILTER AS it was, and fix the FILTER AS to the FILTER OVERFLOW.
STRUCTURE (DWM-160C)
STRUCTURE (DWM-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 screws on the BRACKET MOTOR, and
remove the SPIN MOTOR.
16. Remove 1 screw 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 Power properly connected? Reconnect the Power Cord.
Is there a whirring sound from the
Wash Motor when turned on?
Is the Condeser properly con-
nected?
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
NO
NO
NO
YES
YES
NO
NO
YES
YES
YES
YES
YES
NO

12
PROBLEM CHECK POINT CAUSE SOLUTION
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 prop-
erly connected? Improperly Wiring
Defective Wash timer Replace Wash Timer.
Reconnect the Wash
Timer.
Improper Connection Reconnect
YES
NO
NO
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 dis- assembling 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 spin-
ning.
CHECK POINT CAUSE SOLUTION
The Brake Band is touching
the Drum Coupling Assembly.
NO
NO
NO
YES
YES
YES
YES
YES
YES
NO
YES
Brake wire is too long. Assemble after loosening
LINK BRAKE and adjusting
downward.
BRAKE SPRING is broken. Replace Brake Spring.
Power has been cut off by
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 prop-
erly 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.
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
YES
NO
NO
YES
NO
NO
NO
YES
NO
The Waterseal or the oil-
less metal in the Bellows
Assembly worn out.
Replace Bellows Assembly.

14
PROBLEM CHECK POINT CAUSE SOLUTION
There is leak-
age 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 assembly. Re-assemble Bellows Assembly.
YES
NO
YES
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
NO
Concerning Drainage (Pump)
PROBLEM
Drainage is
not satisfac-
tory
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
NO
Impurities are obstructing
drainage. Remove out 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
YES
YES
NO

15
PROBLEM CHECK POINT CAUSE SOLUTION
Draining
does not
function dur-
ing 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
NO
Drainage is
not satisfac-
tory.
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
YES
YES
Water keeps
draining dur-
ing wash
Is the Drain Selector on the opera-
tion 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

16
6. EXPLODE VIEW AND PARTS LIST
Ass’y Panel Back
ACCESSORY ASS Y

17
ass’y panel (DWM-160C’s)
NO. PART NAME PART CORD SPECIFICATION Q’TY REMARKS
1 KNOB 3613403800 DWM-160C, ABS 4.0
2 PANEL B 3614239000 HIPS 1.0
3 SCREW TAPPING 7122401411 T2S TRS 4X14 MFZN 3.0
4 LEVER W.S SELECT 3613702300 PP 1.0
5 HOSE SPRAY 3613201201 PE-LD 1.0
6 TIMER SPIN 3619911200 S-160CA 1.0
7 TIMER WASH 3619911100 S-DT15NT 1.0 OPTION
TIMER WASH 3619911300 S-K16NT 1.0 OPTION
8 SWITCH DRAIN 3619043700 VP531A-2H,250VAC/15A 1.0
9 LEVER CONTROL 3613701400 POM 2.0
10 LINK VALVE 3617804200 PP BAND W6 L=784 1.0
11 BRACKET PANEL 3610606200 PP 1.0
12 SCREW TAPPING 7122401411 T2S TRS 4X14 MFZN 3.0
13 SWITCH DRAIN 3619045300 VO, SZM-V15-18FA-91 1.0 PUMP MODEL
14 HARNESS DRAIN 3612790600 160CP SW DRAIN L=1100 1.0 PUMP MODEL
ACCESSORY ASS'Y (DWM-160C)
NO. PART NAME PART CORD SPECIFICATION Q’TY REMARKS
1 COVER SAFETY 3611419900 LDPE(DIA:286) 1.0
2 HOSE DRAIN O AS 3613222910 1100MM, HANGER, NON CLAMP 1.0 NON PUMP
3 HOSE DRAIN O AS 3613218800 LD-PE/EVA L=1600 PUMP 1.0 PUMP MODEL

18
Ass’y Tub