LG WT-W7111TH Service Manual ▷ View online
4
POWER SOURCE
on the rating plate
CAPACITY 7.0kg
6.0kg
WASH TYPE
Direct Drive Type
WEIGHT(NET)
35kg
DIMENSION(mm)
540(W) 540(D) 910(H)
62
59
47
47
37
37
25
25
115
110
OPERATION WATER
30kpa~800kpa(4 p.s.i ~115 p.s.i)
PRESSURE
DRUM rpm(NORMAL & EX-LARGE)
135 rpm 10 (differ from wash program)
SPIN rpm
710 50
WASHING PROGRAMS
Normal, Heavy, Soak, Silent, Wool, Blanket, Economy, Langerie
WATER FALL
None
404
516
522.8
ITEM
WT-W(V)7111TC(H/P)
WT-W(V)6111TC(H/P)
2. SPECIFICATIONS
WATER
LEVEL
(7 LEVELS)
EX-LARGE
LARGE
MEDIUM
SMALL
STANDARD WATER
CONSUMPTION
(NORMAL & EX-LARGE
WATER LEVEL)
CONSUMPTION
(NORMAL & EX-LARGE
WATER LEVEL)
5
3. FEATURES & TECHNICAL EXPLANATION
Water
Current
Current
Textile
Stain
A permanent magnets are attached to a rotor and coil is wound on the stator. BLDC Motor let
motor rotate by flowing of electric currrent on a coil in order by using Hall Sensor and IPM
instead of commutator.
Washing Process
Washing Mechanism
3-1. Turbo Drum DD Washing
3-2. Blushless DC (BLDC) Motor
Drum Rotate
Penetration wash from
centrifugal wash
centrifugal wash
Penetration wash remove the stain from textile
Water pours down and penetrates rotating direct drive.
6
Structure of BLDC motor
WORKING PRINCIPLE
The rpm of motor controls by PWM (Pulse Width Modulation).
The rpm of motor controls by PWM (Pulse Width Modulation).
RIPPLE OF PWM
(LOW rpm)
The width is narrow.
(Low speed rotation)
(Low speed rotation)
The width is wide.
(High speed rotation)
(High speed rotation)
RIPPLE OF PWM
(HIGH rpm)
COIL
MAGNET
fi›»
HALL SENSOR
ASSEMBLY
ASSEMBLY
STATOR
ROTOR
7
3-3. Electric Brack System.
This is electric braking system controlled by electric current of opposite direction of motor’s.
3-4. The structure and principle of drain valve. (non pump model)
The principle of drain-start is that the counter clockwise revolving of drain motor cam to the position
marked below figure. enable the plunger valve rod (PV rod) to be pulled so that the bellows could be open
to make a drainage.
The principle of drain-stop is that the same direction revolving of drain motor cam to the initial position
enables the plunger valve rod to return back so that the bellows could be closed to make a drain-stop.
marked below figure. enable the plunger valve rod (PV rod) to be pulled so that the bellows could be open
to make a drainage.
The principle of drain-stop is that the same direction revolving of drain motor cam to the initial position
enables the plunger valve rod to return back so that the bellows could be closed to make a drain-stop.
<The structure of Drain Motor>
<Circuit of Drain Motor>
<Drive Asm>
Capacitor
IPM
Drain Motor
PV Rod
Bellows
Revolving
Cam
Cam
A
3
1
2
1
2
3
PV Case
S/W
Characteristics
●
When the power on, the drain motor cam revolve only counter clockwise.
●
In case of revolving the cam by manual when the power off, we designed the cam to rotate one direction, not
counter clockwise but counter clockwise.
counter clockwise but counter clockwise.
●
The function of internal switch of drain motor is that sensing the initial position of the drain motor cam. So the
power should be always off at the position of drain-stop .
power should be always off at the position of drain-stop .
●
If you push the start/pause button or the power button during drain, the drain motor cam returns to the initial
point finally to stop the drain. But if you pull the power cord from outlet or being the stoppage of electric during
drain, the drain goes ahead. At the moment of power on again, the drain motor cam returns to the initial point.
point finally to stop the drain. But if you pull the power cord from outlet or being the stoppage of electric during
drain, the drain goes ahead. At the moment of power on again, the drain motor cam returns to the initial point.
●
For the compulsory drain the drain motor cam should be revolved to the point " " counter clockwise by
manual.
manual.
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