ETS-Lindgren 2188 Turntable - Manual (Page 18)

Model 2188 Turntable
©ETS-Lindgren—January, 2006
Rev. B—P#399771
18
Mounting methods vary according to user specifications.
Clearance holes are provided, at evenly spaced intervals, along the
outside perimeter of the ground ring as a means of attaching the
ring to a customer supplied ground plane. These instructions cover
installation for a paneled floor; please see the section on “Floor
Flange Mounting in Concrete Pit” for further instructions regarding
mounting in a concrete pit.
For this step you will need three ¼” spacers i.e. bolts, drill bits, etc.
A hand drill,
5/32 ” drill bit, #3 Phillips drive bit, a small square, #14 x
1 wood/metal screws are also required at this time.
The turntables described in this manual each have two floor flange
pieces. All of the flanges are pre-cut at the factory for drop in fit.
Lay the floor flange into the opening of the raised floor and push
outward to the diameter of the opening. Attach the turntable top
onto the brass spacers with the hardware provided.
14. Using a pipe clamp and ¼” Allen wrenches or ¼” pin, place a
spacer between the turntable and flange starting in three places in
the center or on the flange. Once tension exists on all three
wrenches, drill a
5/32 ” hole through the counter-sunk holes in the
floor flange. Drill completely through the panel and place screws
into the holes. Continue working around the flange completing two
or three holes at a time. Refer to the 2188 1.2 drawing included for
details
NOTE: It is very important that a ¼” gap between turntable top and
ground brush flange mounted on floor flange be held as close as
possible so that the grounding brushes seat properly. Also, it is
important to ensure the flange ends are flush with each other.
15. Continue mounting as stated above until all screws have been
installed. Some screws may fall between the floor panel joints. Try
to position the flanges, ensuring as few screws hit these points as
possible, and making certain that the first or last hole in the flange
is not too close to one of these joints. Also, the top floor joint strips
will need to be trimmed to fit up against the flange.
3.6. Floor Flange Mounting in a Concrete Pit
Mounting to concrete is the same with the exception of the
mounting hardware. Instead of the #14 x 1” square socket flat head
screws, you will use ¼ x 1
3/4 ” Phillips flat head TAPCON screws.