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  1. 22-01-2002, 01:22 AM #4
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    Gary
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    I have long held that sight glasses are essentially useless, except as a moisture indicator, being far inferior informationwise to subcooling temperature at the receiver outlet. In fact, they can be counterproductive in that they lead people to overcharge systems.

    However, installing a sightglass at the TXV inlet may have merit. If the subcooling is about 15F and the sightglass at the TXV is bubbling excessively, there is a problem in between.

    Hmmmmmm...
    Last edited by Gary; 22-01-2002 at 01:25 AM.
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