Compressor/thermostat

[Marines27]

Greetings,

I have a Westinghouse WD12 which has been running nonstop no problem for over 20 years.  Last year I had to change the upper circulating fan.  Recently, we noticed the bottled water and other drinks were freezing and the compressor not shutting off.  I cleaned all the cooling fins and other parts of dust and checked all visible connections.  Unplugged for a day, but upon plugging the unit back in, the compressor still does not shut off.  No visible thermostat to adjust, just a bare cooper wire off the refrigerant line with a slight coil above the interior fan.  Ideas?  Thanks.

[johnieG]

If your machine's original, the thermostat should be down by the compressor in a black box with a rather plain looking knob sticking out of the top or side of it, this is your temperature adjustment, clockwise is colder( as viewed from the end of the shaft).

[Slapshot42]

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[Marines27]

Thanks.  The picture is a bit hard to see, but everything looks the same as mine expect I do not have that tall, black box behind the compressor; just the smaller unit which looks like its base.  Guess I will trace the metal wire from above the evaporator in the bottle compartment to that "control box" by the compressor.  I think there is what appears to be a set screw in the case cover.

[Marines27]

I left my WD12 shut down for a few days after the compressor was running non stop and freezing the contents. When I plugged it back in, the compressor does not kick on. The fan above the condenser in the soda box runs. There is no apparent thermo knob; only a hex nut on the back of the power/junction box (top removed for photo).