Haier BC-117A Series, Руководство по обслуживанию

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higher than the ambient temperature ;if you touch it with your hand ,you will
have a sense of slight heat .In case dew condensation appears due to the
fact that its temperature is obviously lower than the ambient temperature ,this
means that most meshes of its screen has been clogged ,resulting in an
obstructed flowing of refrigerant ,thus causing a drop in temperature due to
throttling .
d) Feel the temperature of exhaust gas from the refrigerating system .the
exhaust gas should be very hot and this is the normal working state .For
those refrigerator with enclosed type of compressor refrigerating system, no
frost or dew drop will from on the gas suction tube ,otherwise ,there is
something wrong in the system (Frosting and dew condensation may appear
for a very short time period when just starting the machine ,this is a normal
phenomenon ).
Because a refrigerator is a combination of several components ,they are
related and have influence on each other .In case an abnormal phenomenon
has been found through the above-mentioned checkups ,you need not to
make a hasty conclusion based on only one abnormal phenomenon .It is
advisable to find out two or more abnormal phenomenon ,or conduct
troubleshooting comprehensively with the aid of instruments or other
ways ,because several kinds of troubles may share a common abnormal
phenomenon ,and two or more abnormal phenomena may occur
simultaneously due to a certain trouble .With this method ,you can reject
some suspicious troubles and finally make a correct judgment .
5 Analysis of Troubles and Troubleshooting
A. Poor Refrigerating Effect
The so-called
“
poor refrigerating effect
“
refers to the fact that the
refrigerator can operate and refrigerator normally ,but the temperature in the
refrigerator cannot drop to the prescribed value under the stipulated working
conditions .In view of there are many causes for this phenomenon ,we are
going to discuss and analyze it in the following 7 aspects :
1) Leakage of refrigerant
Analysis of Trouble
The leakage of refrigerant in the system will result in an insufficient
refrigerating capacity ,the resulting phenomena are its lower gas suction
pressure and exhaust pressure as well as higher exhaust gas
temperature .The exhaust tube feels rather hot ,and a continuous gas flowing
sound louder than usual can be heard at the outlet of the capillary ,and no
frost or a smaller quantity of loose frost appears on the evaporator .After shut
down ,the balance pressure in the system is usually lower than the saturation
pressure corresponding to the same ambient temperature .
Remedy
In case there is leakage of refrigerant from the system ,do not hurry to
recharge it with refrigerant ,manage to find out leak points immediately ,and
Maintenance Service and Trouble Shooting