Ocean Technology Systems Guardian, Owner'S Manual

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11
Preparation and Adjustment
Prior to diving the Guardian FFM, examine it for any damage and ensure
proper assembly. Fully extend the head harness on all five (5) straps.
Never
pre-adjust the straps—they will need to be tightened every time the
mask is donned. Move any communications equipment, such as a Buddy
Phone or earphone holders (for an earphone and microphone assembly),
to the rear of the harness. This will ensure proper tightening of the straps
upon donning. Failure to do so may result in the buckles binding, not
tightening.
Warning Note
ALWAYS inspect your diving equipment to ensure it is not damaged or defective
and that it is fully functional. DO NOT dive the Guardian FFM or any other
equipment if you have not verified that it is in good condition and working
properly! If this equipment has been damaged, tampered with, or found to be
defective, return it to OTS or have a qualified technician inspect it immediately.
DONNING
Overall Safety Inspection
Prior to donning your mask, examine the complete assembly as you would
the rest of your gear to ensure that it is in dive-ready condition. You, the
diver, are ultimately responsible for your equipment. Confirm that your
air is turned on and examine the regulator assembly for leaks. Check all
buckles, strap assembly, visor clamp assembly, visor, skirt, and second
stage regulator and quick disconnect. Test that the regulator positively
locks in place once inserted into the mask. Then, as previously mentioned,
extend all straps and prepare to don the mask. Ensure you can equalize.
Hoods and Seals
To achieve the best seal, the mask skirt
should be fitted directly onto the skin of
the diver’s face (Figure 11). Do not attempt
to seal over or against a neoprene hood
as this will result in leaking, excessive
air consumption, and hood inflation. A
neoprene hood can be trimmed to allow for
the mask to seal properly against the face.
For dry suits that have latex seals, the
mask may be worn directly over the hood.
This type of hood allows for the mask to
seal properly over the hood and the hood
seals to the face.
Figure 11: Fit Mask Skirt
onto Skin, Not Hood