True t23 not cooling - True 23 cu. ft. / 651 liter Commercial Freezer T-23F

Question edited for a lot more clarity.
Question moved to True Freezer category.

You need a refrigeration engineer. It sounds like is has a leak and needs topping up with refrigerant gas. Things that also need checking, circulation fan working and that the defrost timer and defrost heater, and electronic thermostat are working correctly. Refrigeration is not a handyman job.

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http://download.partstown.com/is-bin/intershop.static/WFS/Reedy-PartsTown-Site/-/en_US/manuals/TRUE-T-23_iom.pdf. check out this manual. has instruction for lots of what you want.

change the fan motor, if the fan dont wonrk wont spread cool air

compressor pump burnt out

need more info. is the condensor fan running? if not thermostat problem.if it is , is the compressor running or just makes a one time click a few seconds after plugged in? (after unplugged five minutes)... if this is the case it probably needs a new start capacitor (170 uf)..if the compressor is running the larger tube going in the commpressor should be cool about 40-50 after a few minutes .. if not then it is low on refrigerant..R-134 after 1995. or R-12 for older models.. now you also have inside fans and thermo buttons that can not be working.

because cooling cycle and compressor is not same thing ,cooling cycle fixed beside the compresor you can see that.

no use a Ranco p# A12-700 make sure the capillary is in the coilto sense the temp and set it to 1.5 on the knob. any colder and it could get too cold . you may be able to set it at 2 but be careful. it is a constant cut in at 37 degrees coil temp. the box temp will drop to usually to 28 or 29 at cut out.

Okay first True uses capillary tube not an expansion valve.
You say the compressor vibrates not cooling ?
If the valves of the compressor are bad, he may mean
internal valves but usually pressures would not be good.
Give a little more detail please.

Use this link for the True website fill in your zip code

http://www.truemfg.com/ServiceCoLookup.aspx?language_id=1&event_id=401&from=food&Country=USA

It may be more cost effective to find your local reputable fridge guy, True are a standard refrigeration unit and most parts are generic

Hope this helps

Gordon

make sure condensor fan is working and evap fans