SERVICE MANUAL
Model: HRF-663ISB2
39
Issue
2010-01
Rev.
Ref1001S015V0
8-3-7.Stronger vibration and loader noise
1) Refrigerator placed improperly
a) Uneven ground
Uneven ground will cause the refrigerator to be placed unsteadily ,causing stronger vibration and
noise during its operation .
b) Leveling screws not properly adjusted
If the leveling screws on refrigerator legs have not been adjusted properly, vibration and noise will still
occur even if the refrigerator has been placed on a level ground.
2) Abnormal noise from compressor
Three suspended spring inside the compressor case are out of balance, and strike against the case,
moreover, the wear of compressor parts may cause noise sometimes.
3) Resonance of tubing and loosening of parts
Improper and compact laying of tubes or the loosening of parts may cause vibration and noise .
4) Inspection method
To find the sources of noise ,press the vibration spot with your hand while the refrigerator is in
operation and listen attentively whether the vibration becomes weaker or vanishes .If the
refrigerator has not been levelly placed ,put a level meter on its top table and adjust the leveling
screws on its legs .In case noise occurs from the compressor ,strike different locations on the side
surface of its case using a rubber hammer or hand hammer with a wood block in-between so as to
determine whether the suspended springs are out of balance or being seized .
