Completed full cooling maintenance. Changed filter, washed coils, and took amp reading on all cooling functions. All system passed and working. I did find that unit number 4 has been replaced by another company and did not put a condensate j trap for the water and will or may cause water to go inside the build because it can not drain properly from the unit. Also found 6 to 10 screw left from the install on the tpo roof that could easily make a hole if stepped on.