LG GR-B277, Service Manual

Page: 91 / 134

TROUBLE DIAGNOSIS
- 91 -
Problems
Causes
Checks
Measures
Remarks
Vibration sound.
1. Vibration of shelves and foods in
1-1. Remove and replace the
1) Reassemble the vibrating parts
Clack
.
the refrigerator.
shelves in the refrigerator
and insert foam or cushion where
2. Pipes interference and capillary
1-2. Check light food and container
vibration is severe.
tube touching in the compressor.
on the shelves.
2) Leave a clearance where parts
compartment.
2-1. Touch pipes in the compressor
interfere with each other.
3. Compressor stopper vibration.
compartment with hands.
3) Reduce vibration with bushing
4. Moving wheel vibration.
2-2. Check capillary tube touches
and restrainer if it is severe.
5. Other structure and parts
cover back.
(especially compressor and pipe).
vibration.
3-1. Check compressor stopper
4) Replace compressor stopper if it
vibration.
vibtates severely.
4-1. Check vibration of front and rear
moving wheels.
5-1. Touch other structures and parts.
Irregular sound.
1. It is caused by heat expansion
1-1 Check time and place of sound
1)
Explain the principles of refrigeration
Click
.
and contraction of evaporator,
sources.
and that the temperature difference
shelves, and pipes in the
between operation and defrosting
refrigerator.
can make sounds.
2)
If evaporator pipe contacts with other
structures, leave a clearance between them (freezer shroud or inner case).