PlaneWave L-350, Руководство по механическому монтажу

Страница: 21 / 32

21
INSTALLING FORK-ARM
The procedure for installing the fork-arm onto
the drive-base is common to both ALT/AZ and
EQ configurations. This is most easily done
with a second person.
For Equatorial installations, please read the
section on balancing, installing the fork-arm
and instrumentation.
1) First, confirm proper orientation of the fork-
arm, relative to the drive-base. Essentially, you
are going to do the reverse of the disassembly
process that occurred during unpacking.
2) Check tensioning of the azimuth lock -
ing-knob. If properly engaged, it will prevent
unwanted rotation of the drive-base’s inter -
face-plate. (refer to model on page 12, UN -
PACKING)
3) Make sure that the power/com cables for
the Azimuth/RA motor are safely out of the
way, and will not be snagged or sheared during
mounting of the fork-arm.
5) With the help of another person, lift the
fork-arm onto the drive-base. Pay careful at -
tention to the position of the slotted holes
in the interface-plate and the corresponding
shoulder-bolts on the bottom of the fork-arm.
Place the the shoulder bolts into the larger
portion of the slotted-holes.
6) Slide the fork-arm relative to the drive-base
to engage both shoulder-bolts in the narrow -
er portion of the slotted-holes. This should re -
align the marked tape references you placed
earlier.
7) Reinstall the 6 bolts you had removed and
set aside during the unpacking process. Refer
to bottom image on page 10, UNPACKING.