Today I arrived and checked in with Sherry. The concern was that the rooftop unit that serves the parts department was not cooling. I accessed the roof and discovered that the unit was not cooling due to a high pressure safety switch that had shut down both compressors. The cause of this outage was that cottonwood had completely coated the condenser coil and this raised the pressures in the system. Hose was pulled onto the roof, hail guards were removed and the unit was washed thoroughly to remove the cottonwood. After this was completed the hail guards were put back on and the unit was checked for proper cooling functions. The unit returned to normal function. While there was a hose on the roof the other rooftop units on the same roof were quickly washed. Their maintenance is coming up so they were not washed thoroughly just enough to remove the cottonwood and prevent a shut-down. The showroom had a high humidity load and was uncomfortable. The thermostats for the s