Magic Chef MCSR-6085W, Instruction Manual

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16
5 Normal Phenomena—Not Troubles for Refrigerators
In a domestic refrigerator, there is not only a complicated electric controlsystem, but
also a refrigerating system that is difficult to discern whether it is in a good working
condition. Both the systems are related and affect each other. If a certain part of a
refrigerator works abnormally .Its refrigerating efficiency will decrease ,operation
properties will become unstable ,or even it cannot be used normally for those serious
cases. Refrigerators are generally of larger volume ,once troubles appear ,to send
them to a service department is really a tough thing ,if such is the case ,the user will
always be in suspense ,sometimes ,normal phenomena will be erroneously regarded as
troubles .Therefore ,before we deal with the topics of frequently occurring troubles of
refrigerators and their remedies, we should firstly give a brief account of some normal
phenomena which are not troubles .In case any one of such phenomena occurs ,there is
no need to worry about it ,and the user can use it at total ease . 1).When the compressor
of a refrigerator has just stopped running ,a rumbling sound can be heard from inside its
evaporator .This is a sound caused by the flowing of refrigerant in the evaporator tubing
.Because the pressure difference is still greater after the compressor has just stopped
running ,the refrigerant will flow for a certain time , therefore ,this sound is a normal
phenomenon.
2).A click sound can often be heard from the refrigerator .This is a
normal sound produced by the pull-in or release of the armature of a current deadweight
start relay when starting the compressor .The compressor motor will produce a slight
and uniform sound while it is running .This sound is not easy to be heard in the daytime
,but of course it can be heard distinctly at night.
3).The compressor consists of an electric motor and a compressing apparatus .During
its normal operatio ,the motor›s stator core and windings will rise to a temperature
in the range of 100°C~110°C ,and the temperature of the piston and cylinder of the
compressing mechanism can also reach as above 100°C due to the heat produced when
compressing refrigerant .Most of the heat radiates to the air through the compressor
casing ,therefore ,its casing is generally at a temperature between 85°C ~90°C ,it is very
hot ,particularly in summer when the ambient temperature is higher .All these are
normal phenomena .
4 The compressor doesn›t work