I have a Janitrol gas pack model PG036100-1ab, serial 910754051. It wasn't cooling properly and I had repair man come out and he said the refrigerant pressure was too low and it needed more refrigerant and he added some. He didn't clean the obviously dirty coil, so I'm suspicious of his ability. Afterwards, it still wasn't cooling properly and I called a different repair man and he says the refrigerant pressure is too high. He let some out, but he said it still has higher pressure on both sides than what it should be. He suggested trying it at this pressure for now. It still doesn't cool very well and he says he'll come back and let more refrigerant out and see if that helps. BTW- the second repair man cleaned the dirty coils, so that's that causing the problem.
What should the correct pressure readings be? Would anything other than too much refrigerant cause high pressure readings on both sides? Any suggestions would be appreciated.
Thank you, Steve Smith