Refrigerant flow

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Old 06-27-15, 04:50 AM
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Refrigerant flow

If the refrigerant metering device is restricted , will this result in the suction pressure and temperature being abnormally low ? The high side pressure abnormally high ? Assuming the system is properly charged ?

I am not asking for specific pressures , just a generalization .

Thanks ,
Wyr
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Old 06-27-15, 08:03 AM
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Sometimes.

It could also be one of those 2 symptoms with a txv.

It is easier to see when a BB sized piece of solder is against the piston at the evaporator coil. It will pump down. Swedges are involved almost every time that I see this. A 3/8" coupling is not very expensive.
 
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Old 06-27-15, 11:01 AM
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The high-side will not usually be excessively high but the subcooling will be high.

I swaged tubing for many decades, all the time, & never had a problem with restrictions...evidently they weren't doing it right.
 
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