Olympus PT PT-017, Instruction Manual

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E-18
：・Seal the Case by turning both buckle lock levers down in
arrow direction. When one of the buckles is left open, the
Case will not be sealed and water leakage will be caused.
CAUTION
Seal the Case.
When the rear lid is closed (quietly, so that the O-ring will not come out of the
groove), the buckles are engaged with the edge of the rear lid, and the buckle
lock levers are pushed down in arrow direction, the Case will be sealed airtight.
Install the special balance weight.
Install the special balance weight to the tripod mounting thread at the
bottom of the protector. Install the balance weight securely by tightening
the accessory screw of the balance weight.