Late yesterday afternoon Apollo was testing some of the new HVAC tie ins associated with AHU-3, in particular, the # 5 & 6 supply fans. Fan 6 has a different vane actuator owing to the location near the wall. This actuator opened on command and when we tried to reverse the vane direction, the 120v - 24v transformer started smoking, apparently from the actuator malfunction. We opened the actuator and found a capacitor laying in the bottom of the actuator box. I had Filberto look at the board to see if he might be able to save it, he agreed to try. I removed the board and took it to the EE lab. Fil found a resistor that also apparently was bad. Although Fil was able to replace both of the components, I still suspected a bad coil on the board, just from the smell.  When we powered the unit up again we smelled smoke. We immediately shut the system down, the coil was in fact fried. The manufacturer of the actuator had a telephone number embossed on the cover so I placed a call and discovered they have been out of business for at least 5 years now. ON THE SEARCH FOR A NEW ACTUATOR SUPPLIER.

In our spare time, we were testing Fan 5 and trying to stroke the vanes only to find that actuator was faulty as well. Different type of actuator so I do have a replacement for that unit. I will begin replacing that today. 

Meanwhile, as stated in WP 7216 these fans supply the Control Room, Kyle's Lair, EE Lab, Optics Lab, CUR, & MSR. The fans are in manual mode at the moment so I am able to maintain heating and cooling, just not to the fine adjustment I would prefer at the moment but diligently working towards that goal.