LG lcv800 사용자 매뉴얼

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ENGLISH
How to use 
Check before requesting for service
You should not waste money by requesting for service only to find out that it's not a problem. 
If you experience any issues with the product, check the following details before contacting the service 
center or the distributor. You may be able to resolve the issue by a simple instruction from the user manual. 
Suddenly, the suction is poor and noise is louder than usal. 
2
3
 Stage 1: Check the nozzle, pipe connection
  Check nozzle and pipe inside whether blocked or not
  If blocked, remove obstruction [See page 9]
  Check pipe and hose inside whether blocked or not
  If blocked, refer to the stage 2.
 Stage 2: Check the hose inside
  Set control knob to “FLOOR”(Max position)
  Check the hose by opening and closing the hose inlet repeatedly. 
  After  3 ~ 4 times, the problem will be solved.
Knob:  
Max position