Need help with cav cooling system

[johnieG]

Question, do you have frost all the way up the suction tube back to the compressor?  I was thinking that 16oz of R-12 is a bit much for that size of a machine, the  system is basically the size of a vendo V90 & that only takes 12-oz. of freon...did your machine have a specification tag that told you how much freon to charge the system to?  just curious...

Insofar as your T-stat issue, if it were bad I couldn't see how it would regulate the temp between 40-32/deg. Fahrenheit,  it would be the same (too cold temperature all the time regardless of the dial setting), but if the thermostat was be doing it's job, then the temp would vary with the dial setting, does the condenser fan shut off when you turn the thermostat off? (or just the compressor? )

[bubba]

The fan inside the cabinet runs all the time. The fan by the compressor and the compressor cycle with the thermostat.

[bv2]

Johnie there is a tag on the side of the machine that it calls for 16 oz of Freon. There is ice-frost on the line that we taped into back to the compressor and bubba is right on the fan in cabinet, it stays running when the t-stat is turned off. When the t-stat is on any of the cooling settings the compressor never kicks off?

[MoonDawg]

       Is the capillary tube coming off the thermostat in a location where it senses the true temperature of the evaporator?

[bv2]

Moondawg the tube coming off the t-stat is bolted to the side of the evaporator. I hope i answered this right

[bv2]

Now that the compressor has run all day it will not get below 40 degrees and hadn't kicked off yet? Any thing else i can check? Guys i really appreciate all the help yall have give me!   
                                                                                                                           Thanks bv2

[briandr1]

sounds like it is leaking freon look for signs of a leak