User manual PANASONIC DMWMCTZ7

[. . . ] Before connecting, operating or adjusting this product, please read the instructions completely. You can enjoy taking pictures underwater at depths up to 40 m/130 feet. Way liable for damage to any products (digital camera, batteries, card etc. ) inside this Case, photography costs or any other expenses. [. . . ] Preparation -Setting the O-ringBe sure to set the O-ring before attaching a digital camera. Thoroughly wash and dry your hands before handling the O-ring. Loosen part of the O-ring with the tips of two fingers and then lift the loosened part. Be careful not to scratch the O-ring with your fingernails. Check that there is no dirt, sand, hair, dust, salt crystals, lint or grease on the o-ring. If you find any of these, remove them with a soft, dry cloth. There may be dirt on the O-ring that you cannot see. Check if there is any dirt by Be careful not to leave any fibers from the dry cloth on the O-ring when wiping it. Remove them carefully with an air spray or a cotton swab. If you use a cotton swab, be careful not to leave any fibers from it in the O-ring groove. Inspect the front case groove as well as the rear case (side where O-ring is set) Apply a rice-grain size of grease (supplied) evenly to the O-ring with the tip of your finger. (Do not apply the grease with paper or a cloth. The fibers from the paper or cloth may stick to the O-ring. ) If there is too much grease on the O-ring, dirt and dust will stick to it causing water to leak in. Therefore, hold the O-ring between the balls of your finger and thumb and gently remove excess grease. If you use other types of grease, the surface of the O-ring may be damaged causing water leakage. Fit the O-ring evenly into the O-ring groove. Check the following one more time: There is no dirt sticking to the O-ring. There are no scratches or squashed parts on the O-ring. Thoroughly wipe any grease off your hands with a dry cloth. Afterwards wash thoroughly with fresh water. Check that no foreign materials are sticking to the outer surface of the O-ring or The buckle on the front case and then close the Case. [. . . ] Use the tips of your fingers to remove the O-ring. Do not use a pointed object as it may scratch the O-ring. After removing the O-ring from the rear case, wipe off any dirt, sand, hair or other foreign materials on it. Also wipe the O-ring groove and the inner sides of the front case which come into contact with the O-ring. [. . . ]