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Old May 4th 2015, 04:41 AM   #11
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Compressor work

It is double door no frost refrigerator. All the refrigerant circuit is made of copper tube of 5 mm diameter. K - type thermocouples probe have been used to measure the temperature. The probes are inserted into the T-type brass connector which are fitted just before the compressor suction and discharge ports.
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Old May 6th 2015, 01:12 PM   #12
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Test the temperature gradient along the coper pipe as it moves away from the compressor.
You just need to look at the outside temperature of the pipe.
If there is a marked change in temperature of the pipe, this might indicate the source of the issue.
I suspect the fluid inside the pipe is much colder than your thermocouple is indicating.
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Old Jun 14th 2015, 04:17 AM   #13
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In a refrigerator , there is a heat ex changer attached just before the evaporator. It is basically a 5 mm tube through which capillary tube is passing with the hot fluid, the 5 mm tube has the cold fluid coming back from the evaporator. Because of this heat exchanger the suction temp is high.
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