Fantasea FP-4 Operator's manual - Should Be Used.
10
Since the gasket on the Fantasea FP-4 is face-to-
face/compression sealed, and is not subject to friction as
it is closed, there is no need to lubricate it. Grease or any
other form of lubrication does not help seal the housing.
It only reduces friction, which is commonly present if the
housing has an O-ring seal. Lubricating the gasket before
use could cause it to slip out of its groove, and not form
a proper seal: therefore no silicon or other lubricants
should be used.
The gasket should also be checked visually for any cracks
or perforations. If any part of the gasket shows signs of
wear or damage, it is imperative that it be changed before
going into the water.
If the gasket is removed from the channel groove it sits
in, be sure to get it completely back into place so it is
properly seated. Starting at one corner, press the gasket
with your finger and feel it seat into its channel groove.
Then continue this procedure continuously in one direction,
round its perimeter, until the entire gasket has been
pressed flat into place. Go over it a second time to be sure
it is properly in place. Then you are ready to clean it, give
it a final visual inspection, and close the housing.
Info:
Gasket
Closing the Housing:
2. Never force the housing closed; if it does not close easily,
please check to make sure that the camera is well seated and
that the lens is sitting properly in the port area and not distorting
the rubber seat.
It is most important to check to make sure the rectangular rubber
gasket [blue or black] is seated correctly in its niche [not raised
at any point and sitting in its groove] and that there is no sand, dirt
or any other foreign object on its surface. Do not use any lubricant
whatsoever on this gasket especially silicon grease which will
distort it. Make sure that the black wrist lanyard is not jammed
into the housing during the closing procedure.
3.
Bring the two halves of the housing together with one hand
[squeezing your thumb on one side and your other fingers on the
other until the two halves touch and hold securely in that position.
With the other hand, attach the flange to the body of the camera
and gently lower the rounded latch until it snaps into place.
1.