Well, it's that time of the year again. Time to shut down the evap cooler and start up the A/C, as monsoon season is getting close. Only this year I have an added wrinkle - there's a wasp nest in the roof top electrical box feeding the cooler. Plus, I'm not getting around as well as I have in the past so doing all the things needed can't be finished in one day. So, I'll have to split up the duties so as not to overtax myself. Plus confine my duties to the early morning hours as I don't like working in 108+ weather these days.
Tomorrow I'll prep the A/C condensing unit. Clean the weed growth around it, take the top off and clean out all the leaves and needles inside, then wash the coil. Hopefully there's no wasp nest in that control compartment. When complete I'll plug the disconnect block in and feed power to the crankcase heater. let it warm the oil in the compressor sump up so as not to cause freon slugging when I start it up.
Then when the humidity starts rising (typically around July 4th) I'll shut down the cooler. Drain the water, close it all up to keep wasps out of it, and switch the dampers.
Then the next day Ill turn power off to the rooftop panel and open it up and deal with the wasps. Hopefully most of the buggars will have grown and moved on, if not be spraying the inside with Dawn dishwashing liquid and water. After that I'll take the front off of the panel, clean out any bug bodies, nesting material and other debris and rinse out the soap. Then once it dries reassemble and seal up the hole with hole plugs. Really hoping there's not alot of "residents" as I can't move quickly and trying to get off the roof quick could cause a fall. It sucks getting old!