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3. If an air line to an NC4 unit on a separate
system has been replaced, the NC4 may
need to be realigned (see “Setting-up and
aligning a separate system” on page 40).
4. If realignment is not necessary, set switch
SW1-2 (NC set-up) on the NCi-4 interface to
‘On’. After approximately 5 seconds, set the
switch to ‘Off’.
5. Check that the system triggers. To do this,
pass an object through the laser beam and
check that the status LED changes from
green to red and back to green.
Servicing – cleaning the optics