Olympus Waterproof Case PT-17, Инструкция по эксплуатации

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（6）Catching of the strap, the bag of silica gel, etc. at the time of sealing the
Case
（7）Throwing the Case from a boat into the water, jumping with the Case into
the water, or other sudden application of strong forces onto the Case. When
entering the water, hand the Case over quietly or avoid impacts in other
ways.
Ｑ９：What are the important points for O-ring maintenance?
Ａ９：Please observe the following items.
（1）Never use alcohol, thinner, benzene or similar organic solvents or chemical
detergents to clean the O-ring. When such chemicals are used, it is to be
feared that the O-ring will be damaged or that its deterioration will be
accelerated.
（2）Use the original Olympus silicone O-ring grease (white cap). The grease
attached to Cases up to PT-008 (red cap) and the grease of other
companies are not suitable for this silicone O-ring, and use of such grease
may cause deterioration of the surface and impairment of the waterproof
function.
（3）In order to avoid deformation of the O-ring when the Case is not used for a
long time, remove the O-ring from the Case, apply a thin coat of the
special grease, and store the O-ring in a clean plastic bag. For reuse,
confirm that the O-ring is free of damage and cracks, that it has sufficient
elasticity, that the surface is free of stickiness and other abnormalities, and
use it after applying a thin coat of the special grease. Excessive
application of grease does not improve the waterproof function or the
permissible withstand pressure. However, it may facilitate attachment of
sand, dirt, etc.
A thin, uniform coat produces the best result.
（4）The O-ring is a consumable product. Replace it at least once a year.
（5）Deterioration of the O-ring is accelerated by the use conditions and the
storage conditions. Replace the O-ring immediately by a new one if it
shows signs of damage, cracking or loss of elasticity.
Ｑ１０：What are the important points for Case maintenance?
Ａ１０：Please observe the following items.
（1）Never use the following chemicals for cleaning, corrosion protection,
defogging, repair or other purposes.
・Never use alcohol, thinner, benzene or similar volatile organic solvents or
chemical detergents to clean the Case. Pure water or lukewarm water is
sufficient for cleaning.