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Electric leakage of refrigerator
a)
Slight electric leakage
Electric insulation has deteriorated due to being affected with damp, thus resulting in slight
electric leakage.
b)
Serious electric leakage
Refrigerator case has become live due to faults occurred in some electric devices or the
erroneous wiring in installing power cord plug or outlet by the user. This is very dangerous.
c)
Electric leakage test
ii)
Slight electric leakage
A tingle sense will be experienced as soon as you touch the metal parts of the refrigerator
with the hand. When you test them with a test pencil, its neon lamp will come on. In that
case, the first thing you need to do is to determine whether the grounding is perfect. If the
grounding has no problem, turn off the refrigerator immediately, then check the insulation of
electric circuits with a voltmeter.
iii)
Serious electric leakage
Do not touch the case body of the refrigerator, its door handle or other metal parts with your
hand. When you test the refrigerator with a test pencil, it will light up intensively. Measure
the resistance between the power cord plug and the case body with a voltmeter, the reading
will be zero (0
Ω
); in the worse case, the fuse will blow. Check the 3-prong outlet to see
whether the live wire and the null line are inversely connected. One possibility is that the live
wire and null line of the outdoor power supply circuit have been inversely connected; this
makes the null line become a live wire.
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 lying of tubes or the loosening of parts may cause Vibration
