From: Dan Long
Subject: FF Screens last night
Date: Tue, 20 May 2014 07:53:41 -0600
Hi all,
   Last night, shortly after opening, Howard and Patrick discovered the =
main fuse blown in the FF controller.  The fuse would blow immediately =
upon replacing it.  They traced the short to the 4:30-6:00 petal pair. =20=
   James came in around 10:30 PM and found the motor for that pair was =
bad and replaced it.  Unfortunately the motor stop switch for the open =
position was also bad (letting the motor continue to run when fully =
open).  The observers tried to run with that one section open and =
disabled, but found that it was not possible to operate the FF screens =
even when directly commanding them from the mcp if a set is disconnected =
from the controller.  Note that the manual pendant disables telescope =
motion when plugged in so is not an option here. =20
   About 1:00 AM, I got another call.  At this point I went to the site =
to replace the switch.  Howard and Patrick, while I was driving to the =
site, looked at the switches to determine which was bad.  They found the =
offending switch and discovered that the switch effectively has a built =
in spare.  By moving the wire on the side with a pair of contacts to the =
other switch and the wire on the side with the four contacts to the =
other NC terminal they got a working switch.
   So when I got to the site they were observing.  This is how the =
system was left for the remainder of the night.  The switch will be =
replaced today.
-Dan