Belarus 825 Air Conditioning Problems

[rdperk]

Hello everyone, I am new to this environment but thought someone may be able to help me with my problem. I recent bought an old Belarus 825 tractor. It runs great and operates as it should. However, now that it is getting warmer I would like to use the air conditioning in the cab. The previous owner told me the air worked, but had a leak and he had not recharged the system. I was going to charge the system, but cannot even find a switch to turn on the compressor. Does anyone know how to engage this air conditioning? If there is no switch and it is controled by the temperature setting knob then is there a way to test the electrical settings to the compressor's clutch? Any information would be greatly appreciated as the summer is fast approaching and I don't look forward to roasting in an oven. Thanks.

 

[rdbigfarmboy]

Those are all after market so they could be different but I have had 2 and still have 1. the switch is on the temp knob.
I took the AC unit completely off the one I use now. It worked but wasnt worth the effort. I removed the doors and windows for summer work.