Set
the cable tension by hanging a 14mm wrench on one cable in the center of
the span at the top of the load table. At the wrench the cable should
deflect 25mm to 35mm below the other cable.
Do the same for the other cable. Then Re-check the tension in the first
cable.
Adjust
the picker head speed controls so that PICKER IN stops motion after 3
seconds and both sides of the head are synchronized.
Picker wrist in and out are now fixed orifices unless you are working on
one of the beta pickers. So no adjustment is necessary. If it is
required, wrist out should take 10 seconds, wrist in should take 8
seconds.
PICKER OUT should take 3 seconds.
PICKER DN should take 3 seconds. From start to stop of motion.
PICKER UP should take 6 seconds.
Download the test procedure and procomm macro pickertest.exe
and follow the instructions for fine tuning of these times. This is a
self extracting zip file: just copy the file to a temperary directory
and run it. You will have to move the al_diag.wax file into the script
directory in procomm or where ever you store such things. The other
files are only required if your version of procomm does not work and
therefore have to recompile the source code.
After
PICKER IN has finished its motion, there should be a 30mm gap between
the load table and the curved foam pad on the cup bar. To make this gap
larger, position the white nylon wrist stop father down in its slot. It
is easiest to adjust after a PICKER WRIST IN. I have found that about
3mm of slot showing above the stop is pretty close to what you need. Be
sure to move the wrist out and picker out, then in again to check this
position.
You should check that the leading edge of the
plate is entering the LEC without hitting the film guide. Adjust the rod
ends on the wrist cylinders to angle the plate in or move the picker
rails in the slots in the bottom bracket. Make sure that the rail is not
rubbing on the pulley. Move the pulley to a different hole if you have
to. It is better to angle the plate than move the rails since moving the
rails will eat up clearances for manual bypass.
The plate drop adjustment is not intuitive. If you screw the rod end in,
you will actually make the plate drop larger because the cylinder stroke
is limited by the stack of M6 washers on the rod. What you are doing by
screwing the rod end in is effectively shortening the stroke of the
cylinder. If you remove one of the M6 washers on the rod,
the picker will grab the plate higher; therefore the leading edge will
stick farther out from the picker and farther into the LEC. You may have
to adjust the position of the move cylinder brackets that are attached
to the top of the load table so that the picker wrist pivot clears the
large 3" hole in the load table and also does not get too close to
the TEC when the picker is down and the TEC is actuated. If you move
this bracke, be sure to check the alignment of the separator arms in
their micro switches. You can also adjust the plate drop the old
fashioned way by moving the plate ledge up or down.
Adjust the plate drop to 2mm to 4mm. There is no or very little
variation between a full stack and an empty stack. The quick way is to
look for the edge of the plate in the gap between the LEC and the film
guide. The plate should be no more than 1mm above the LEC. Use a pencil
and mark the plate right at the LEC or film guide, then drop the plate
and draw another line from the same reference. The distance between the
lines is the plate drop. This is also an easy way to see if the plate is
level to the drum. If you use the old mark the separator arm method, you
will get misleading results. The plate bows so far toward the load table
that it effectively changes its vertical length when it is dropped as it
will straighten out.
