Samsung RS757LHQESR/ Series Service Manual page 75

REFORENCE INFORMATION
Descriptions of symptoms
▶What is the solution for
the compressor noises?
▶What is the solution for
the compressor noises?
▶During the comp start-
up, iron friction noises
occur.
What causes them?
▶What can be checked
when the unit sends out
noises?
Check Points
For new refrigerators
Check if the refrigerator is
leveled.
Check if there is enough
clearance at the back of the
refrigerator for the ventilation
of the machine compartment.
Required clearance around
the product.
For old refrigerators
Dust could get built-up in
the machine compartment.
Then, its ventilation would
get restricted which makes
the refrigerator overheated
resulting in the increase of
the noise level.
As the vibration proof
rubbers get hardened, noises
generate during the comp
operation.
(The noise level is quite high.)
→ Replace the vibration proof
rubbers.
The reciprocation piston could get worn out or inner
components could get dislocated.
1. Check its symptoms and patterns.
2. Check if the unit is installed on a firm and leveled floor.
3. Check if the unit is installed close to the customer's living
area.
4. Check if the panel on the machine compartment hits on the
rear wall and the unit has enough clearance with the rear
wall.
5. Check if the refrigerant pipes are shaped as normal.
74
Corrective Measures
Check if the refrigerator
wobbles by shaking with
hands.
If there is not enough
clearance or it is blocked by
things such as newspaper,
there could be resonance
noises.
More than 2 inches from the
back, 12 inches from the top
and 4 inches from its sides.
Explain it to customers and let
them clean dust or any other
foreign substances in the
machine compartment.
The compressor is dislocated
due to impact during its
transportation such as
moving-in. → Check if it'
s dislocated when it is more
noisy after moving-in.