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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.
•
(Eective in high-frequency range)
•
Using sound-absorbing material: It is similar to blocking, but uses styrofoam, glass wool, etc. for absorb-
ing noise.
•
(Eective 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 x 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 x them.
6-3-2. Major Noise Claims and Service Methods
Noise Claim Symptom or Cause Service Method Remarks
Noise due to incor-
rect installation
▶
Styler is installed on a weak
floor.
▶
Styler is not level.
•Strengthenthefloor.
•Movetoanotherlocation.
•Usetheadjustingscrewsinfrontof
the styler to make it level.
Part vibration
▶
Whizzing sound •Styler parts should be securely
inserted into their proper position.
▶
Inside the fridge
Resonance sound
of the compressor
▶
Humming sound •Removenoisebyadjustingpipes
and seat rubbers.
Compressor noise
▶
Imbalance of the compressor
▶
Sound due to collision with
surrounding pipes
•Maintainthebalanceofthecom-
pressor by adjusting surrounding
pipes and seat rubbers.
•Preventcollision.
Noise of starting
device
▶
Noise due to the connection/
disconnection of CUP contact
point when starting the compres-
sor
▶
Clicking sound
•ReplacetheCUP.
Noise (vibration)
due to wire con-
denser
▶
Humming sound
▶
Bouncing sound
•Checkifthescrewsarefixedtightly.
•Thecontactpointofheatsink(wire)•
bounces Remove the heat sink