Xylem H-223 - Manual (Page 6)

1-2 Assembly & Installation
H-223
Element Cam-Lock
Step 1
Insert Cam Element
Step 2
Insert Notched Element
Step 3
Rotate Cam Element
into locked position
2.1 Install the Director and Reflector Elements
The Yagi elements are installed in pairs using a cam-lock mechanism to rigidly lock each element in
place. Each pair consists of one element with an eccentric cam and the second with a small round notch
in the center. Follow Steps 1 thru 3 to install the three 13-1/4" long director pairs and the 14-3/4" long
reflector pair.
Step 1: Insert the element with the cam into the boom until the cam
is in the center of the boom. Rotate the cam until the side passage is unobstructed. Do not attempt to
insert the notched element first, the 2 nd element will not slide past the notch.
Step 2: While holding the first element in place, insert the second element (with the round notch) into the
boom and rotate it until the notch is aligned with the cam. Slide the notched element into the boom until
the notch is approximately centered inside the boom. By hand, rotate the cam element until the cam rubs
against the notched element. Slide the notched element back and forth until you feel the cam drop into
the notch. Continue to rotate the cam element by hand until it turns approximately 30 degrees. If it
won’t turn 30 degrees it is not properly aligned with the notch in the other element.