DOWNLOAD LG WT-555 Service Manual ↓ Size: 1.53 MB | Pages: 23 in PDF or view online for FREE

-13-

When the spin dryer cover is raised 40 to 50 mm,
adjust  the door switch so it turns on/off.(fig.36)

1.The brake assembly is fitted to the top of the

spin motor. The brake block is positioned to
make contact with the coupling . The brake is
operated by the brake wire assembly connected 
to the hinge of the spin dryer cover. (fig.37)

2.When the spin dryer cover is raised 15 to 25

degrees, the brake should be operated and the
empty spin dryer basket should be stopped
within 5 seconds.(fig.38)

fig.36

fig.37

After repairing the door switch system or the brake
system, perform the trial test and check the following
points.

3.Untighten the socket  bolt of the motor pulley

assembly and pull out the motor pulley assembly
from the motor. (fig.35)

fig.35

To assemble the wash motor, reverse disassembly
procedure.

(1) When opening the spin dryer cover, the door

switch should be turn off before the brake block
makes contact with the coupling.

(2) When closing the spin dryer cover, the door

switch should be turn on after the brake block
separtes from the coupling.

fig.38

a.When braking is weak, move the brake strap

hook to upper hole of the brake wire plate to
adjust.

b.When braking is too strong, move the brake

strap hook to lower hole of the brake wire plate
to adjuct.

After repairing, perform the trial test and check the
following points.

(1) Measure the insulation resistance; it should be

more than 10 M..

(2) This washing machine must be properly

grounded for safety.

(3) Check to make sure that there is no water

leakage from any of the connections.

(4) When spinning empty, the braking time should

be less than 5 seconds.

(5) Has grease adhered to contacts of electrical

parts?

40~50mm

15

o

~25

o

-14-

Power cord is not plugged into the
wall outlet firmly.

Power is not supplied at the wall
outlet.

Connect firmly.

Advise the customer.

Replace fuse or reset circuit breaker.

Advise the customer.

After connecting to the power
source and turning on spin timer,
spin motor does not operate.

Plug or wiring is defective.

Spin timer is faulty.

Door switch is faulty.

Capacitor is defective.

Motor is defective.

Brake is defective.

Capacitor is defective.

Motor is defective.

Repair and rewire properly.

Replace with a new one.

Adjust or replace with a new one.

Replace with a new one.

Replace with a new one.

Adjust brake properly.

Replace with a new one.

Replace with a new one.

After connecting to the power
source and turning wash timer,
wash motor does not operate.

After connecting to the power
source and turning wash timer,
wash motor does not operate
properly.(When wash motor makes
strange noise.)

Clothes do not swirl adequately

Amount of water decreases while
washing.

While rinsing, water overflows from
corner of the wash tub.

Plug or wiring is defective.

Wash timer is faulty.

Capacitor is defective.

Capacitor is defective.

Motor is defective.

Motor is defective.

Blockage between the pulsator and
the tub.

Excessive amount of clothes.

Valve selector position is not
correct.

Strap connection is not adjusted properly.

Plunger valve bellows is damaged.

Too much water.

Lint is sticking to the plunger valve.

Lint is sticking to the filter or hoses.

Drain pump does not operate.
(WP-550NP/WP560NP)

Repair and rewire properly.

Replace with a new one.

Replace with a new one.

Replace with a new one.

Replace with a new one.

Replace with a new one.

Remove blockage.

Reduce wash load.

Set valve selector to "WASH•INSE" position.
Advise the customer.

Adjust properly.

Replace with a new one.

Adjust amount of water filled.

Separate plunger valve cover and
clean the plunger valve.

Remove lint and clean.

See [Others]

Power is not supplied to
washing machine.

After connecting to the power
source and turning spin timer ON,
spin motor does not operate
properly. (When spin motor makes
strange noise.)

-15-

While spining, spin dryer basket
is unbalanced.

Spining operation is not proper.

After opening spin dryer cover, spin 
dryer basket continues revolving.

Installation is unbalanced.
Installed area is not level.

Load in spin dryer basket is
unbalanced.

Bellows assembly is damaged.

Center between spin shaft and
coupling is unbalanced.

Brake is defective.

Spin shaft is clogged.

Drain hose is clogged.

Bearing for bellows assembly is worn.

Brake is defective.

Vent is turned over or is not secure.

(WP-550NP/WP-560NP)

Vent is faulty. (WP-550NP/WP-560NP)

Advise the customer to install the
washing machine in a more stable
location.

Re-distribute the load.
Advise the customer of correct loading.

Replace with a new one.

Balance completely.

Adjust brake properly.

Remove blockage.

Remove blockage.

Replace with a new one.

Adjust brake properly.

Secure properly.

Replace with a new one.

No draining

Drain pump does not operate 
(WP-550NP/WP-560NP)

When draining water, water
does not flow out smoothly.

Noise

Valve selector position is defective
or is not correct.

Strap connection is defective.

Lint sticks to the filter or hoses.

Valve selector position is defective
or is not correct.

Wiring is defective.

Mini switch is defective.

Drain pump interior(runner) is
clogged.

Pump motor is defective.

Drain hose is clogged.

Lint is sticking to the plunger valve,
the filter or hoses.

Blockage between the pulsator and
the tub.

Bearing for pulsator shaft assembly
is worn.

Bearing of bellows assembly is
worn.

Set valve selector to proper position.
Advise the customer.

Adjust properly.

Remove lint and clean.

Set valve selector to proper position.
Advise the customer.

Rewire properly.

Replace with a new one.

Remove blockage.

Replace with a new one.

Remove blockage.

Remove lint and clean.

Remove blockage.

Replace with a new pulsator shaft
assembly.

Replace with bellows assembly.

-16-

Models equipped for dual voltage can be adjusted to operate on a power supply of either 110(or 127) or 220 volts.
However, in order to avoid the danger of fire and prevent damage to the washing machine, the voltage setting
must match the voltage of your power supply. The voltage set at the factory is indicated on the "PRESENT
VOLTAGE" column in the spec. label on the back of the washing machine.
To change the voltage setting, follow the procedure that follows:

1. Unplug the power cord from the electrical outlet, by grasping the plug itself.
2. Use a screwdriver to remove the back cover from the washing machine(Fig. a).
3. Remove the polyethylene bag covering the lead wire housings(Fig. b).
4. To change the voltage setting from 220V to 110(or 127)V, disconnect the housing marked "220V" and connect

the housing marked "110 (or 127)V", to change the voltage setting from 110(or 127)V to 220V, disconnect the
housing marked “110(or 127)V” and connect the housing marked "220V"(Fig. c).

5. Cover the housings with the polyethylene bag and reattach the back cover.

6. Be sure to indicate the new voltage setting on the "PRESENT VOLTAGE" column in the spec. label for future

reference.

VALVE SELECTOR (CYCLE SELECTOR)

SPIN TIMER

WASH   RINSE

DRAIN

OFF

ON 

OFF

Drain Pump

Pumping

Pumping

Off

Pumping

Off

Fig. a

Fig. b

Fig. c

Water leakage

Hose connection is not secured.

Bearing for pulsator shaft assembly
is worn.

Plunger valve bellows is damaged.

Plunger valve assembly is damaged.

Bellows assembly is damaged.

Bellows connection is not secured.

Secure firmly.

Replace with a new pulsator shaft
assembly.

Replace with a new one.

Replace with a new one.

Replace with a new one.

Secure firmly.