5Apply a coating of grease to the O-ring.

•Apply a small drop of grease onto the O-ring and evenly coat the entire surface of the O-ring with the end of your finger.

•Do not use paper or cloth as fibre may stick to the O-ring.

•Make sure that a thin coating of grease is applied to the surface of the O-ring at all times. Grease protects the O-ring, and prevents wear.

•After you have applied a small drop of grease onto the O-ring, set the O-ring immediately. Do not leave the greased O-ring on a desk or other surfaces.

6 Place the O-ring in the groove on the marine pack.

GB

Place the O-ring evenly in its groove paying attention to the following points:

–Is there any dirt on the O-ring?

–Is the O-ring twisted?

– Do not pull the O-ring.

– Is the O-ring protruding?

Bad example

Good example

Final check

After you have fitted in the O-ring, check it again for the following:

–Is the O-ring twisted?

–Is there any dirt on the O-ring?

–Is the O-ring protruding?

–Are there any cracking or distortion on the O-ring?

How to check for water leaks

After you have replaced the O-ring, close the marine pack before you insert the equipment you are using. Immerse the marine pack for about three minutes in water to a depth of about 15 cm, and check for water leaks.

PCAUTION

When you have taken photos on a sandy sea bottom or have placed the camera on the sand, remove the O-ring and check for water leaks.

Be sure to take a spare O-ring with you.

This facilitates replacement even if O-ring trouble occurs where you are taking photos.

continued

31-GB