Sony DSC-F707 / 717 User Manual page 4

3.3 Special note on responsibility for watertight integrity: Each housing is
individually inspected and hydrostatically tested in the factory. The design of the piston
O-ring seal is among the most reliable in the industry and the watertight integrity is
excellent. This special O-ring design provides a perfect seal even if there is any
movement between the body and lid due to change of ambient pressure. However please
note that responsibility for ensuring the integrity of the watertight seal lies entirely with
the user. 10 BAR accepts no liability for damage to, or loss of any equipment used with,
or placed inside the housing.
The O-ring seal is the only barrier between the water outside and the air space
within the camera. It is an effective barrier only if the seal is properly maintained.
The O-ring seal should be inspected be fore every dive. The following information is
provided for your guidance in using and maintaining the O-ring seal.
3.4 Maintaining the O-ring Seal: If the main body to lid O-ring is not installed, install
the O-ring before diving. This is the only user serviceable O-ring. Its care and
maintenance is critical to the watertight integrity of the housing. The O-ring should be
replaced at the service interval (see section on service). If the O-ring is contaminated, or
not already installed, inspect grease and install the O-ring according to the following
guidelines.
3.5 Guidelines for inspection, cleaning and re-instillation of the O-ring
Tools: You will require a soft cotton cloth or bud, make sure these are free of all
chemicals or contamination such as loose fibers. You will also require the tube of silicone
grease supplied with the housing. Note other types of silicone grease specifically for use
with underwater camera equipment can usually also be used. It is advised to carry out the
following procedure on a firm clean level surface, e.g. at a table), to prevent skidding
especially useful to have when diving from a boat.
When to maintain the O-ring seal: Remove the O-ring periodically for inspection. It is
not necessary to remove, clean and re- install the O-ring after every dive provided the O-
ring did not become contaminated. As a rule of thumb set up the camera and housing
before a days diving. The housing may be required to be opened between dives, e.g. to
change film or re-charge batteries. Before opening, make sure the outside of the housing
is thoroughly toweled dry. After removing the lid and servicing the camera, replace the
lid straight away, rather than leaving it lying around. Before replacing the lid, make sure
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