JVC WR-MG250: инструкция

WR-MG250_SHEET_EN_A5.book Page 1 Wednesday, May 13, 2009 9:34 AM

O-ring Maintenance Manual

ENGLISH

O-Ring-Wartungshandbuch

DEUTSCH

Manuel d’entretien du joint d’étanchéité

FRANÇAIS

Onderhoudshandleiding voor de O-ring

NEDERLANDS

Manual de mantenimiento de la junta tórica

CASTE.ESP.

Manuale di manutenzione dell’anello circolare

ITALIANO

Руководство по уходу за уплотнительным

РУССКИЙ

кольцом

Instrukcja konserwacji pierścienia uszczelniającego

POLSKI

O 型環維護手冊

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O-ring

What is O-ring?

● O-ring is a type of seal used to make underwater

O-ring

cameras, strobes and other diving instruments,

waterproof.

It looks like a big, thick rubber band.

● The O-ring is an important component that protects the

camera from water by keeping the marine case airtight.

When should the O-ring be inspected?

● As a general rule, each time before using

(Salt cr ystals are formed when seawater th at entered the O-ring groove dri es.

Salt crystals just like sand, can cause water leakage.)

● When shooting on the sandy seabed, or when the camera is placed on the

sand

● When not used for a long period of time

Inspection and maintenance of the O-ring

● Remove the O-ring

¹ To inspect the O-ring, use the pick supplied to remove it from the O-ring groove.

¹ Do not use knifes, scissors, tweezers, and other sharp objects which might damage the

O-ring and the O-ring groove.

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● Check for hair, dirt, sand, salt, dust, and other foreign matter

¹ Even small foreign matter can cause water leakage.

● Check for foreign matter that are not visible by rubbing gently with your

fingers

¹ Be sure to remove all foreign matter.

JDirt JSand JHair

JDust JSalt JLint

● Wipe off any residual grease

Wipe off gently with a soft cloth or tissue paper.

¹ After wiping, make sure the fiber of the cloth or tissue paper is not adhered to the

O-ring.

● Check for any deforms (distorted, crushed), cracks or cuts on the surface

Cracks on the O-ring can be easily spotted by bending and

Cracks

twisting it gently.

¹ Never use an O-ring if it is deformed, cracked, or

damaged in any way. It can cause water leakage.

¹ Replace the O-ring with a brand new one every year.

Even if there are no nicks, cracks, etc., its effectiveness

will deteriorate due to wear.

JCracks JDistortion JCrushed

JFrayed JNicks JSand corrosion

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● Apply silicone grease on the O-ring

The O-ring needs to be re-greased when its surface appears dry.

Be sure to remove the O-ring and apply the silicone grease on it.

A Squeeze about 1 cm onto your finger

B Apply it on the O-ring by holding the O-ring with your fingers.

If the amount applied is not enough, repeat the above step.

¹ Make sure that you do not apply too much grease!

Dirt and dust will easily adhere if too much grease is applied.

Neither will it improve the waterproofing. Be sure to apply moderately.

¹ Do not pull too strongly!

This will cause deformation.

About 1 cm

O-ring

Grease

● Check for any foreign matter in the O-ring groove

Inspect thoroughly as it is usually not visible.

Grains of sand and crystallize salt may be stuck inside.

Remove them carefully by either using an air spray or a swab.

¹ Make sure the fibers of the swab are not adhered.

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Swab

Groove

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● Insert the O-ring after inspection

Make sure no foreign matter is adhered when placing the greased O-ring back to the

groove.

Do not pull too strongly, and make sure the O-ring is placed evenly and not twisted.

<POINT>

Insert from the four diagonal corners

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and smooth out evenly.

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2

5

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Storing the O-ring

● If you do not intend to use the marine case for a long period of time,

remove the O-ring and allow it to rest.

A Remove the O-ring.

¹ Be sure to use the pick supplied.

B Wipe off the grease gently.

C Check for any foreign matter that might be adhered to it.

D Put the O-ring inside a clean plastic bag, and store in a way that it will not be subject to

stress.

¹ Do not put in moth balls and other insect repellents.

¹ Do not leave the O-ring as-is in the marine case for a long period of time.

It may deform due to heat and pressure resulting from the locked and tightened state.

¹ Do not store in hot and humid locations.

This will cause the O-ring to deteriorate more quickly.

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