LG Styler S3RERB Service Engineering Manual page 43

6-3. Solving the Product Noise
6-3-1. Reducing the Noise
•
Blocking the sound: Block the propagation path of the sound with high-density noise insulation mate-
rial so that the sound cannot be heard.
•
(Effective in high-frequency range)
•
Using sound-absorbing material: It is similar to blocking, but uses styrofoam, glass wool, etc. for absorb-
ing noise.
•
(Effective in low-frequency range)
•
Preventing vibration: Prevent mechanical vibration of the machine from being transferred to other
materials.
•
(Using vibration-proof rubber)
•
Maintaining dynamic balance: Minimize the dynamic imbalance of a rotating body.
•
Fixing the vibrating part: Be sure to fix the vibrating part securely so that it does not move.
•
Removing collision: In order to prevent noise arising from two materials bumping into each other, you
should either isolate them or securely fix them.
6-3-2. Major Noise Claims and Service Methods
Noise Claim
Noise due to incor-
▶Styler
rect installation floor.
▶Styler
Part vibration ▶Whizzing sound
Resonance sound ▶Humming sound
of the compressor
Compressor noise ▶Imbalance of the compressor
▶Sound due to collision with
surrounding pipes
Noise of starting ▶Noise due to the connection/
device disconnection of CUP contact
point when starting the compres-
sor
▶Clicking sound
Noise (vibration) ▶Humming sound
due to wire con- ▶Bouncing sound
denser
Symptom or Cause
is installed on a weak
is not level.
Service Method
• Strengthen the floor.
• Move to another location.
• U se the adjusting screws in front of
the styler to make it level.
• Styler parts should be securely
inserted into their proper position.
• Remove noise by adjusting pipes
and seat rubbers.
• Maintain the balance of the com-
pressor by adjusting surrounding
pipes and seat rubbers.
• Prevent collision.
• Replace the CUP.
• Check if the screws are fixed tightly.
• The contact point of heat sink (wire) •
bounces  Remove the heat sink
43
Remarks
▶Inside the fridge