D. Install four 1/4"-20x 11/4" bolts in the four
mounting holes in the bottom of the bell
housing. Run them in about a 1/2" and leave
them as close to equal length as possible.
E. With the rotator sitting in the upright position,
resting on the four 1/4"-20 x 1 1/4" bolt heads
and connected to the control unit by the cable,
plug the power cord into a 120 VAC 50/60 Hz
or 220 VAC 50/60 Hz wall socket, depending
on which unit you have.
MOUNTING INSIDE THE TOWER
CAUTION
The rotator is designed for vertical, operation
with the bell shaped housing in the up position.
Water and other contamination will get into the
motor unit
if
it is mounted horizontally, at any
angle, or upside down.
The rotator is mounted inside a tower (see Figure 3)
to the flat tower plate by means
of
four bolts
furnished in the hardware kit. Use the following
procedure:
F. Turn the power switch on. The meter should be
illuminated.
G. Depress the "Brake Release" (Center) lever, hold
it, and simultaneously depress the CCW
direction switch (left). The rotator should turn
CCW (looking from the top). This is S-E-N-W-
S: Release the CCW direction switch; the
rotator will coast down and stop. Now release
the brake switch. The rotator is now locked into
position.
H. Repeat Step G for CW direction by depressing
the brake switch first, then the CW direction
switch (Right).
CAUTION
It is best to release the direction switch just prior
to the end of rotation (extreme CW or CCW
position) in order not to cause undue stress on
the stop arm and/or the gears.
1. Locate the rotator in the tower directly under the
bushing. Note that the tower plate must be cut out
to allow the connecting cable to pass through the
plate
2. Reattach the wires in the same manner as used in
the trial assembly and secure the wires to the
tower in such a manner that the wires will not be
strained.
3.
The rotator is attached to the tower plate by
means of fourbolts and lockwashers (see Figure
3). Spacer washers must be used between the
rotator and plate for clearance of the rotator
housing bolt heads. The flat tower plate must be
drilled in four places using the template
provided with this manual unless the tower plate
is already properly drilled. A fifth hole must be
drilled or cut to clear the control cable.
4. Tighten the four bolts, but not to final tightness.
Observe how the rotator turns. It must rotate in
such a manner as to turn the mast concentrically
to the top bushing.
I.
Return the rotator to full CW position.
FOR CUSTOMER'S USE ,
Enter the number/color of each lead connected to the
terminals, and pins of the plug.
1
2
3
4
5
6
7
8
5.
Trial assemble the mast to the top of the rotator
using the U-bolts, nuts and lockwashers through
the rotator and clamps as shown in Figure 3. The
maximum mast diameter that may be used is 2
1/16" O.D.. We recommend 1 1/2" nominal steel
pipe with 1/9" O.D. in standard wall thickness
of .145". For stacked arrays or very large beams,
we recommend extra heavy-duty wall
thickness.200". Both steel pipes can be
purchased to specification ASTM-120.
On any inside tower installation, care must be
exercised to get the antenna mast shimmed to the
exact rotational center of the rotator. The
geometry is such that a mast of 2.062" (21/16")
(52 mm) O.D. pipe will be exactly centered. If
the O.D. of your mast is less than this, you
should shim out to these dimensions.
