Only partially my mess up, but the computer
system controlling our heating
system at MVPAC was outdated a years before it was installed, I don't know why it was installed but it's horrible. So this
system is very old, and requires a computer running HyperTerminal to access it. Also the Backup Battery for it is dead and so every time we lose
power...we lose heating to almost the entire school because we lose the program.
Now, when living on an island in the Atlantic Ocean where
power comes from 7 different undersea cables...
power isn't exactly stable and it flickers often and goes out every couple weeks.
So it was the day of a show and we had lost
power that night and therefore the air conditioning
system was busted. It was getting very warm and I was trying to at least get air flowing in the
PAC so it wouldn't get too stuffy until my boss got there so he could access the computer to get the
system back online fully. Well in order to do this, manually fired up the air handlers using the override
switch (by the way, standing next to a massive air handler and hitting the override
switch which in turn makes a huge BANG as the 100amp
contactor starts the motors and then the cacophony of the fans starting up is one of by favorite things ever.
) Anyways, so about 20 minutes later by boss shows up around the time we start loading the audience into the
PAC and despite the air handler running its still getting very warm.
At this
point the event
production manager was starting to get frustrated by the lack of AC so my boss and I go in the back to fix the
system. Well we get the
system back online eventually, and walk out to find that the 20+ Ton 3
Stage AC Chiller on the roof of the building has failed to start up and therefore AC still is not working. So we freak out and go back to the computer and try to force it to start up, no luck, we tryed everything.
Well, about 15 minutes before the show starts we finally figure it out. Apparently with this control
system, the Air Handler is considered part of the Chiller and wont start up the Chiller if the Air Handler is in Override mode. So after I shut down the Air Handler and returned it to Automatic mode we were able to get the whole
system up and running again.
We were really worried because once before my boss said he had all of the fans on the Chiller die
in one winter because they were shut down and not run at all for the entire winter so they all rusted solid and blew all the bearings. He feared that it had happened again.