frost top construction ???

[herefishy]

How did I know the TEV's were wrong?


Also, Tom Richardson... your cold control settings are very incorrect.


With properly applied expansion devices for your application, you want the cold control to cut out the compressor (or solenoid valve, whichever applies) when the coil temperature reaches about 22degF, if I recall our previous discussions regarding the system balance (condensing unit capacity divided by unit cooler capacity @ 1degF T.D.)

Set the cold control to cut out @ 22-24F, and cut in @ 38F (the cut-in being your highest desirable temperature that youwant to maintain). Your differential on the cold control is going to be about 16 degrees F.

It seems perhaps y'alls reasoning of setting the cut-out @ 32F was to prevent a frosted over coil. The coil is a air defrost coil. Yes, frost is going to form. The off cycle is what defrosts it.