The semi-annual preventative maintenance on the HVAC systems was today.
We have 5 independent HVAC systems. 1-4 are in the main shop area and #5 is above the lounge.
#1 (over wood turning) was tagged out “defective” on the thermostat, but checked out OK electrically and mechanically except for a missing filter. I installed a filter (found media and a frame in the coworking area) and it’s back on.
#2 and #3 checked out fine except for loaded filters and dirty coils. They were shaken out and re-installed; I’m not sure if our filter media is intended to be washable or they just need to be replaced. @EricP or @dannym ?
#4 (over the 3D printers) is offline. The electrical service is dead on two legs so the HVAC tech couldn’t fully test it. It also appears to have a dead heating strip (tested open-circuit) which is tolerable if everything else works when it’s powered back up. Service notes indicate there’s been at least one bad strip in this handler for a while.
#5 (over the lounge) is also OK. Filter wasn’t even too bad.
- re-label all the air handler and condenser circuit breakers with the right unit numbers.
- repair electrical service to #4 air handler before next maintenance trip.
- clean evap coils on all air handlers. Interior cleaning is apparently outside the scope of our preventative maintenance contract (though they’ll do it for an addition fee)
- document policy & procedure on filter maintenance. We have a habit of stressing equipment by letting filters go too long between changes.