Fisher Scientific Isotemp Refrigerator not working

Hi
I was wondering if there is anyone out there who knows how to deal with laboratory refrigerators. I have looked at many websites but they deal with household refrigerators - and for some reason are quite different from a laboratory refrigerator.
The refrigerator (-20C) stopped working one day and there was water all on the floor. I called the fisher scientific ppl and they said to defrost it completely and then try it again. It didnt work after a complete defrost. I suspect it could be the compressor, but I do not know how to open it up and whether it is safe to do so (apparantly there is a capacitor somewhere that is lethal). I cant even seem to find the relay or the cooling fins in the back.
Can someone help or direct me to a site with appropriate information. Thanks Shahriar
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minus 20 C, chances are you need a complete set of HVAC tools, vacuum pump gauges, dial charge, tanks and a lot of electrical tools as well. Screwing around with refrigerants now days with out the proper licenses and training is just stupid.
Time to let your finger do the walking.
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