Ocean Technology Systems Guardian - Installation of Communications; Figure 10: the Blanking Plug

10
Utilizing these components will allow you to vary the height of the
equalizing assembly. This feature gives the Guardian FFM an increased
range of comfort and performance for virtually any size face.
How does this work? The rubber, V-shaped equalizing block is designed
to t under your nose. Properly adjusted, you should be able to breathe
through your nose with little, if any resistance. To equalize, you compress
the mask enough to move the “V” up against your nostrils. This allows you
to exhale against the block and equalize your ears.
Note: This adjustment has little to do with the size of your nose—it’s the
distance from the base of your nose to the bottom of your chin that is
relevant. Since every face is different, it is very important that you take
the time to determine which conguration is best for you, and that before
diving you make sure you can easily equalize.
Installation of Communications
The Guardian FFM is designed to accept Ocean Technology Systems’
(OTS) communications. There are two primary communication systems
designed specically for the mask: The Buddy Phone
®
(see “Buddy
Phone
®
Installation Instructions” on page 19) and the OTS earphone
and microphone assembly (see “EM-OTS-2 Installation Instructions”
on page 20).
The Buddy Phone is a stand alone communication system designed with
the transceiver mounted on the head harness located on the right side of
the diver’s head. The Buddy Phone has a built-in earphone.
The OTS earphone and microphone (EM) assembly is for all
communications systems that require hard-wire connection to the diver’s
EM assembly, including Magnacom systems. Regardless of the system,
the EM assembly mounts to the mask in the same manner.
If the FFM was purchased without
communications equipment, there
will be a blanking plug installed in the
communications port. This consists of a
plug on the inside (of the mask) secured
with a threaded, locking ring on the outside
(Figure 10). To remove, use OTS wrench
(P/N 137053-000) to unscrew the locking
ring counterclockwise and remove the plug
from the inside.
Figure 10: The Blanking Plug