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Page 32
CHAPTER THREE
SECTION 3.3
DIRECTOR 1 EHU (continued)
SECURE THE DIRECTOR 1 EHU TO THE MOUNTING PLATE
The Director 1 element (PN 70-3409-01) is different from the rest of the EHU’s because there is a plastic lid
that needs to be installed before attaching the EHU to the mounting plate. The other EHU’s all utilize the
mounting plate itself as the lid.
The Director 1 EHU must be wired before placing the lid on it and the coax seal needs to be in place as cov-
ered earlier. Be sure to remove and discard the foam protector that is shrink wrapped to the EHU before the
lid is secured. Failure to do so could lead to catastrophic failure.
Figure 3.31
shows the foam protector pad
before
it is removed from the EHU.
There are a total of ten #10 screws used to fasten the lid. Six of these screws utilize the Nylock nuts, and will
be positioned with the threads pointing upward as shown in figure 3.30. Note that two of the Nylock screws
are flat headed as shown in
figure 3.30
(
Key F
). The remaining four #10 machine screws are used to attach
the Driven EHU to the element mounting plate and will be covered in more detail in the next step.
Place the gasket material so that it aligns with the holes in the EHU lid as shown in
figure 3.30
. Place the
EHU on top of the gasket and using ONLY the six #10 x 3/4” screws (PN 60-0017), #10 Nylock nuts (PN 60-
0019) and #10 flat washers (PN 60-0018), fasten the lid to the EHU. There must be a washer between the
top of the EHU flange and the Nylock nut. Be sure that the control cable wire is cleanly positioned inside the
molded wiring trough. Tighten each nut.
A
Key
QTY
Part #
Description
A
6
60-0019
#10 Nylock nut
B
6
60-0018
#10 Flat washer
C
1
10-1502-12
EHU gasket
D
1
10-1022-21
EHU lid
E
4
60-0017
#10 x 3/4” machine screw
F
2
60-0017-10
#10 x 3/4” Flat head screw
G
1
70-3409-01
Director 1 EHU
A
A
A
A
A
B
C
D
E
E
E
E
F
F
B
B
B
B
B
G
Drain
hole
FIG. 3.30
FIG. 3.31
