10BAR Underwater Housings Camera Housing for Canon EOS 450D - Manual (Page 5)

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contamination such as dust, hair, salt, sand etc. has fallen onto the O-ring or O-ring recess, as a precaution we
recommend to inspect the O-ring every time the lid is opened and to carry out the maintenance if necessary.
Procedure:
•
Place the lid on a firm non-slip level surface.
• The O-ring can be extracted using an O-ring extractor tool (make sure the tool as no sharp edges). Alternatively use
the flat s of the thumbs to gently stretch the O-ring on two faces (Fig. 4) thus making a small loop protruding a few mm.
The loop can then be grasped between finger and thumb, to pull the O-ring over the lip.
•
Clean the O-ring recess (the square groove where the O-ring sits) with a cotton bud.
• Inspect the O-ring all the way round its surface for damage such as cuts tears or contamination. This should be done
visually and also by feeling the surface texture between finger and thumb.
•
IF THE O-RING IS DAMAGED OR SUSPECTED OF BEING DAMAGED, DISCARD IT
IMMEDIATELY. A spare O -ring is supplied with your housing, or a replacement O-ring can be obtained from 10
BAR. If the O-ring is contaminated or suspected of being contaminated, clean it with a cotton cloth that is free of all
chemicals or contamination. After cleaning inspect the O-ring again.
• Once the O-ring has been inspected and verified fit for use, apply a
SMALL amount of silicone grease to the O-ring.
The silicone grease must be evenly distributed round the O-ring
•
Replace the O-ring into the groove; run a finger round the O-ring, to make sure it is snugly seated in the groove.