ETS-Lindgren 2188 Turntable - Manual (Page 17)

Model 2188 Turntable
©ETS-Lindgren—January, 2006
Rev. B—P#399771
17
12. When mounting to a steel pit and steel raised floor, a #7 drill bit for
tapping or a 9/32 drill bit to create “through holes” is required when
mounting anchor plates to the steel raised floor. Locate and mark
holes in each group of anchor plates. Drill and tap or drill through
each hole and then screw in ¼-20 hardware so that the table does
not move as you go around each location. Proceed with leveling
instructions.
CAUTION: Before leveling make sure all ½-13 flange nuts and
clamp collars are backed off all the way to avoid pulling plates off
the floor. Refer to drawings at the back of this manual.
13. Raise the table by turning the ½-13 square head screws clockwise
until the measuring bar top is 3/16” above the raised floor; this is
just a rough finish height. Check height with a leveling instrument
(torpedo laser level or some other device).
Once the table is leveled, tighten flange nuts on the square head
screws and secure set collars on the torque pins down onto the
base top surface and outer plate if applicable. Remove the
measuring bar. Refer to figure three and drawing 2188-1.2 at the
rear of the manual for more details.
3.5. Raised Panel Floor Flange Installation
Figure 3: Turntable Elevation View
The ground ring assembly includes a floor flange with a mounted
brush ring that interfaces with the contact ring mounted underneath
the turntable top. The floor flange provides constant electrical
contact with the ground plane.