Ocean Technology Systems Guardian, Owner'S Manual

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9
Using two wrenches, attach the female end
of the low-pressure hose to the second
stage (Figure 7). OTS wrench (137053-
000) is supplied with the Guardian FFM;
use this on the second stage and another
wrench on the hose fitting.
Warning Note
Do not tighten the hose with a single
wrench—always use a back-up wrench.
Improper tightening can damage the
second stage’s internal components,
resulting in potential failure of the regulator.
You can now pressurize the system and
check for leaks. Depress the purge cover
and test for airflow. Air will be directed
through the channel at the top of the
regulator port insert. You are now able to
insert the regulator into the regulator port of
the lower clamp and test breathe the mask.
Equalizing Assembly
The Guardian FFM has an equalizing block
assembly and kit that allows the diver to
equalize the ears. This kit consists of an
adjustable, slotted, rubber base equalizing
block mounted on a wire form (Figure
8), along with several inserts of varying
thickness (Figure 9) that secure to the
block with two pull-tabs which are installed
through a pair of holes in the equalizing
block. OTS provides an equalizing block
without holes (to be used without inserts for
lower settings), giving the diver even more
options to choose from. Additional wire
forms are available by contacting your OTS
dealer.
Figure 7: Fitting Hose
to Regulator
Figure 8: The Equalizing
Assembly
Figure 9: Inserts of
Varying Thickness