Haier HRF10WNDWW Service Manual page 28

SERVICE MANUAL
Model: HRF10WNDWW/HRF12WNDWW
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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 lying 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 .
7-3-6.Clogging in filter
Analysis of Trouble
Total clogging of a filter is rarely to occur. This trouble is mostly caused by the paste-like matter formed
from the substances filled into the system or other dust after the refrigerator has been used for a
longer time, or by the dirt accumulated gradually inside the filter. Sometimes, tapping the filter may
cause a passage for flowing. Touching it with your hand, you will feel that it is cooler compared with its
temperature in the normal state.
Remedy
The same as described in the capillary clogging with dirt.
3) Troubles of Compressor
a) Breakage of gas suction and discharge valve blocks
Analysis of Trouble
The compressor works by means of the opening and closing of gas suction valve and discharge valve
Issue 2009-7-24
Rev. Ref0907S005V0
28