T8501DPE - LG Washing Machine Service Manual (repair manual). Page 8

 

Electronic Brake System is braked by reverse current of motor. 
 

 

 

 

 

 

Capacitance   

 

 

<Host PC board>   

 

control chips 

 

* 3-4. Structure and working principle of drain valve 

■ Start 

draining:

    starting with turning motor rotor and pulling the drain valve to 

(as seen below) 

 

Stop draining: End with turning rotor to initial point to close the valve and stop draining. 

 

 

 

Drain motor 

Drain valve rod 

Rotor 

Drain valve inlet 

Bellows

 

  <Structure 

of 

drain 

motor> 

      <circuit 

of 

drain 

motor> 

 
* For non pump model   
 
■ Features 
● 

Drain motor rotor can only be rotated counterclockwise when power is on. 

● 

For easy maintenance, Drain motor rotor can only be rotated counterclockwise when power is 

on.  
● 

The function of inside button in motor is to sensor the initial position。 The “POWER OFF”is 

at the position of stopping draining. 
● Rotor shall finally return to original position and stop draining when pressing “START/PAUSE” 
or “POWER” button. But it does not work while unplugging the power or power failure and 
restart when power is on. 

● During 

maintenance， turn counterclockwise 

  to implement forced drainage. 

 

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