WP-580N - LG Washing Machine Service Manual (repair manual)

Model
WP-580N
Pages
23
Size
3.45 MB
Type
PDF
Document
Service Manual
Brand
Device
Washing Machine
File
wp-580n.pdf
Date

View LG WP-580N Service Manual online

WASHING MACHINE
SERVICE MANUAL
CAUTION
BEFORE OFFERING SERVICE, READ
THIS MANUAL CAREFULLY TO DIAGNOSE
TROUBLES CORRECTLY.
MODELS : WP-570N(P)/WP-580N(P)
WP-581N(P)/WP-582N(P)
-2-
CONTENTS
1. CAUTION ON THE OPERATION
3
2. SPECIFICATIONS
4
3. CONTROLS LOCATION
5
4. DISASSEMBLY INSTRUCTIONS
6
5. ADJUSTMENT
13
6. EXAMINATION AFTER REPAIRING
13
7. TROUBLESHOOTING GUIDE
14
8. SCHEMATIC DIAGRAM
17
9. EXPLODED VIEWS
18
10. REPLACEMENT PARTS LIST
21
• APPENDIX (The types of power supply cords)
26
-3-
1. CAUTION ON THE OPERATION
1-1. Safety precautions 
1. MOVING PARTS
Never put your hand into the
spin dryer basket until it has
come to a complete stop.
Also never put your hand into
the wash tub while washing
or rinsing.(Either of these
actions can be extremely
dangerous.)
2. ELECTRIC POWER CORD
in any way, it could cause a
malfunction, an electrical
shock, or a fire.
• If the power cord is
damaged, it must only be
replaced by a repair shop
appointed by the
manufacturer, because special purpose tools
are required.
• When unplugging the power cord from the
electrical outlet, always be sure to take hold of
the plug, and never pull on the cord.
• Do not set heavy objects on the power cord and
be careful that the cord does not become
pinched by the washing machine.
3. HOT WATER
Do not use water hotter than 50˚C; doing so
could cause damage to some of the plastic parts.
4. WATER AND THE WASHING MACHINE
CONTROL
Be careful not to allow water
to come in contact with the
controls of the washing
machine ; doing so could
cause a malfunction or an
electrical shock.
5. INFLAMMABLE MATERIALS
Do not put clothing, rags or other materials which
have been soaked in an inflammable substance 
(such as benzene, paint thinner, kerosene, etc.)
into either the wash tub or the spin tub ; doing so
could cause a fire.
6. WHEN NOT IN USE
If the washing machine is not used for a long
period of time, unplug the power cord from the
electrical outlet.
7. HEAT AND FLAME
Many parts of this washing machine are made of
flammable plastics ; never place hot or burning
objects on or near the washing machine.
8. CHILDREN
Guard against small children from playing near or
on the washing machine.
1-2. Servicing precautions
Before attempting to service or adjust any part of
the washing machine, disconnect the electrical
power supply from the wall outlet and remove the
water in the washing machine.
1-3. Installation
1. LOCATION
• Select the installation location.
•  Because of the danger of electrical shock, do
not place the washing machine in a location
where it would be exposed to rain or excessive
moisture(such as a steam bath).
•  Many of parts of this washing machine are made
of plastic, and could catch fire or become
damaged if exposed to an open flame, extremely
high temperatures, or strong direct sunlight. 
•  Place the washing machine on a flat, level
surface and allow a clearance of at least 5cm
between the washing machine, walls or other
objects.
• Lower the drain hose so the water drains from 
the open end, and reroute the drain hose
according to the location of the washing
machine.
2. EARTH WIRE CONNECTION
For models with a two-prong plug, be sure to
earth to prevent electrical shock.
•  If the water tap and indoor piping are both metal,
wind the earth wire around the base of the water
tap.
•  If either the water tap or indoor piping is not
metal, obtain instructions from the dealer how to
bury a ground rod.
• Never connect the earth wire to a gas pipe.
3. POWER SOURCE
•  Plug the power cord into an electrical outlet
indicated on specification label.
•  Do not plug the washing machine into the same
electrical outlet with other electric appliances.
If the power cord is damaged
Motor type
2-pole single phase shadding coil motor
Power consumption
30W
Lift head of draining
1m
-4-
2. SPECIFICATIONS
Power source
Wash motor  Consumption
Spin motor Consumption
Pulsator Revolution
Spin dryer basket Revolution
DIMENSIONS : 686(W) X 412(D) X 835(H)
WEIGHT(NET) : 17Kg(Non pump model), 18.5Kg(Pump model)
WASH TUB(Material) : Polypropylene resin
SPIN BASKET(Material) : Polypropylene resin
CABINET(Material) : Polypropylene resin
WASH TIMER : 15min. Mechanical type
SPIN TIMER :  5min. Mechanical type
MOTOR TYPE : 4-pole single phase condenser induction motor 
WASH MOTOR OUTPUT : 85W
SPIN MOTOR OUTPUT : 25W
POWER CONSUMPTION AND REVOLUTION SPEED
110~120V,
60Hz
220~240V,
50Hz
220V,
60Hz
110~127/220V
60Hz
260W
240W
200W
260W/230W
160W
180W
95W
100W/90W
235rpm
210rpm
235rpm
235rpm
1500rpm
1300rpm
1500rpm
1500rpm
DRAIN PUMP MOTOR (
WP-581NP/WP-582NP)
-5-
3. CONTROLS  LOCATION
(1) Washing cover
(2) Control panel
(3) Overflow filter
(4) Wash tub
(5) Strainer
(6) Pulsator
(7) Cabinet
(8) Spin dryer cover
Spinning will stop if the cover is
opened during operation.
Spinning will not start unless the cover is closed.
(9) Safety cover-2
(10) Spin dryer basket 
(11) Safety cover-1
(12) Earth wire
(only for models with a two-prong plug except for
rating voltage "110~120V")
(13) Drain hose (Non pump model)
(14) Power cord
(15) Drain hose (Pump model)
3-1. NAME OF EACH PARTS
3-2. NAMES OF CONTROL PANEL PART
(1) Water inlet : Used to feed water to tub.
(2) Wash timer : Used to select wash time.
(3) Drain selector
• Model WP-581N/582N : Select "WASH&RINSE" for washing and rinsing, and "DRAIN" to drain the wash tub.
• Model WP-581NP/582NP : Select "WASH&RINSE" for washing and rinsing with an overflow drain, 
and "DRAIN" to drain the wash tub, and "OFF" to turn off the drain pump.
(4) Spin timer : Used to select spin time.
(15)
(10)
(11)
(12)
(13)
(14)
(8)
(2)
(3)
(4)
(5)
(6)
(7)
(1)
(9)
(for pump model)
1
2
3
4
5
3
6
9
12
15
OFF
OFF
For pump model
SPIN TIMER
DRAIN SELECTOR
WASH TIMER 
OFF
DRAIN
WASH¥RINSE
1
2
3
4
-6-
4.DISASSEMBLY INSTRUCTIONS
4-1. Panel Assembly Replacement
1.After untightening 3 screws, separate the back cover
from  the cabinet.(fig.1)
2.Unwind the vinyl tape and disconnect the lead 
wires. (fig.2)
4. Untighten 5 screws and separate the panel
assembly from the tub.(fig.4)(fig.5)
To assembly the panel assembly, reverse the
disassembly procedure.
3.Separate the plunger valve strap the rod.(fig.3)
fig.1
fig.4
fig.5
NOTE
Before attempting to service or adjust any part of
the washing machine, disconnect the electrical
power supply from the wall outlet.
Back cover
fig.2
fig.3
Plunger valve strap
Rod
-7-
To assemble the drain select arm to the switch
body, reverse the disassembly procedure.
fig.6
fig.9
fig.10
fig.7
Timer Replacement
Drain Select Arm Replacement
1. Pull out the knobs. (fig.6)
2.Untighten 4 screws and separte the switch body 
from the panel. (fig.7)
3.Separate the times from the switch body by
pushing the claw holding the times in the
direction of the arrow. (fig.8)
fig.8
To assemble the timers to the switch body, reverse
the disassembly procedure.
1.Pull out the knob.
2.Separate the plunger valve strap from the drain
select arm. (fig.9)
3.Lift the  A  of the drain select arm in the direction
of arrow and at the same time rotate the drain select
arm in the direction of the white arrow until the hook of
the drain select arm matches the groove of the switch
body.(fig.10)
Spin timer
Switch boby
Wash timer
Drain select arm
Plunger valve strap
-8-
3. Pull out completely the spin dryer basket 
assembly.(fig.16)
fig.11
To assemble the spin dryer basket assembly,
reverse the disassembly procedure.
Mini Switch Replacement
(For Pump model)
4-3. Spin Dryer Basket Assembly
Replacement
1. Untighten the screw and separte the mini switch
from the switch body.(fig.11)
To assemble the mini switch to the switch body,
reverse the disassembly procedure.
2. After separating the Q-spring  and the door switch
from the tub pull out the spin dryer cover by
pushing the hook on the tub in the direction of
the arrow.(fig.13)
To assemble the spin dryer cover, reverse the
disassembly procedure.
After removing the back cover, proceed as follows:
1.Separate the spin dryer cover assembly from the
tub by pulling the part  A in the direction of
the arrow.(fig.14)
2.Loosen the bolt fastening the spin shaft.(fig.15)
1. Open the spin dryer cover and separate the brake
wire strap from the brake wire assembly.(fig.12)
After separating the panel assembly  from the tub,
proceed as follows:
4-2. Spin Dryer Cover
fig.14
fig.15
fig.12
fig.16
fig.13
Brake wire
assembly
Brake wire strap
Q-spring
Door switch
Safety cover-1
A
Spin motor
-9-
3. Untigten the M-30 nut fastening the pulsator
shaft assembly. (fig.21)
To assembly the pulsator shaft assembly, reverse
the disassembly procedure.
4-5. Pulsator Shaft Assembly
Replacement
After seprating the panel assemble, the safety cover
assembly, the spin dryer basket assembly, the spin
dryer cover, the drain hose, the drain hose-D
(For pump model) and the back cover, proceed
as follows:
To assemble the tub assembly, reverse the
disassembly procedure.
After separating the tub assembly, proceed as follows:
1. Untighten the pulsator fixing screw and separate
the pulsator from the tub. (fig.19)
2. Lay the tub assembly on a blanket or some
carboard and untighten the bolt fastening the
pulsator shaft and pull out the pulsator pulley.
(fig.20)
2. Untighten 10 screws and separate the tub
assembly from the cabinet. (fig.18)
fig.19
fig.20
fig.18
fig.21
4-4. Washing Tub Assembly
Replacement
1.Separate the V-belt from the pulley.(fig.17)
fig.17
V-belt
Pulsator fixing
screw
M-30 nut
-10-
1.Untighten the plunger valve cover by rotating in
the direction of the arrow. (fig.25)
The bellows assembly attached to the unit cannot be
separated unless it is torn off.
4. Tighten the bolt of the coupling assembly while
adjusting it to the cutter split made in the spin shaft.
(fig.24)
The assembly procedure is as follows:
1.Insert the bellows assembly into the bellows
supporter.
2.Fit them by pushing the bellows assembly and
the bellows supporter at the same time in the
spin tub bottom. (fig.23)
3.Pass the spin shaft through the center hole of the
bellows assembly and the insert it into the coupling
assembly. (fig.23)
fig.23
fig.25
4-6. Bellows Assembly Replacement
1.Remove the belllows assembly. (fig.22)
2.Remove the bellows supporter by using slip joint
pliers to the tub bottom. (fig.22)
fig.22
NOTE
fig.24
NOTE
If the leakage occurs at the spin tub after
assembling the bellows assembly and the bellows
supporter, it is wrong. It could cause an electrical
shock  or a fire, therefore they should be securely
assembled again.
4-7. Plunger Valve Assembly
Replacement
After separating the plunger valve strap from the
rod proceed as follows:
Bellows assembly
Plunger
valve cover

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