LG LRSC26980TT Service Manual - Page 70

Bad torque for assembling motor - support

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TROUBLE DIAGNOSIS PROBLEM 7. Sounds CAUSE/CHECK POINTS 1) Compressor compartment operating sounds. Transformer sound. Its own fault. -- Core gap. Bad connection. -- Correct screw connection. Drip tray vibration sound. Bad assembly. Distortion. Foreign materials inside. Back cover machine sound. Bad connection. Partly damaged. Condenser drain sound. Not connected. Bad pipe caulking. 2) Freezer compartment sounds. Fan motor sound. Normal operating sound. Vibration sound. Aged rubber seat. Bad torque for assembling motor bracket. Sounds from fan contact. Fan guide contact. Shroud burr contact. Damping evaporator contact. Residual frost contact. Damaged heater cord. Narrow evaporator interval. Unbalanced fan sounds. Unbalanced Surface machining conditions. Fan distortion. Misshappen. Burr. Ice on the fan. -- Air intake (opposite to motor bushing assembly.) Motor shaft contact sounds. Supporter distorted. Tilted during motor assembly. Resonance. Evaporator noise. Evaporator pipe contact. -- No damping evaporator. Sound from refrigerant. -- Stainless steel pipe shape in accumulator. Sound from fin evaporator and pipe during expansion and contraction. 3) Bowls and bottles make contact on top shelf. 4) Refrigerator roof contact. 5) Refrigerator side contact. 6) Insufficient lubricants on door hinge. REMARKS - 70 -

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TROUBLE DIAGNOSIS
- 70 -
PROBLEM
CAUSE/CHECK POINTS
REMARKS
7. Sounds
1) Compressor compartment operating sounds.
Transformer
sound.
Drip tray vibration sound.
Back cover machine sound.
Condenser drain sound.
2) Freezer compartment sounds.
Fan motor sound.
Sounds from fan
contact.
Unbalanced fan sounds.
Motor shaft
contact sounds.
Resonance.
Evaporator noise.
3) Bowls and bottles make contact on top shelf.
4) Refrigerator roof contact.
5) Refrigerator side contact.
6) Insufficient lubricants on door hinge.
Its own fault. –– Core gap.
Bad connection. –– Correct screw connection.
Bad assembly.
Distortion.
Foreign materials inside.
Bad connection.
Partly damaged.
Not connected.
Bad pipe caulking.
Normal operating sound.
Vibration sound.
Aged rubber seat.
Bad torque for assembling motor
bracket.
Fan guide contact.
Shroud burr contact.
Damping evaporator contact.
Residual frost contact.
Unbalanced
Ice on the fan. –– Air intake (opposite to motor
bushing assembly.)
Supporter distorted.
Tilted during motor assembly.
Evaporator pipe contact. –– No damping evaporator.
Sound from refrigerant. –– Stainless steel pipe shape in
accumulator.
Sound from fin evaporator and pipe during expansion
and contraction.
Damaged heater cord.
Narrow evaporator interval.
Surface machining conditions.
Fan distortion.
Misshappen.
Burr.