Olympus FL50 - Manual (Page 12)

F IGURE 4: R EPLACE THE L ID
CLOSE HOUSING
1. Place housing back over front and align the complete mating surface of the housing and the
gasket, forming a proper seal.
2. Ensure that the pressure release plug is pulled all the way out while closing, otherwise the air
cannot escape.
3. Squeeze the lid closed all the way, you will hear the hiss of air being expelled.
4. Screw home the pressure release plug; you need not excessively tighten this plug. The seal is
made by the internal O-rings. The O-ring on the underside of the plug is just to keep out dirt
and other debris. Plug is shown in Figure 4 above.
5. Inspect the gasket seal for proper closure. A complete seal can be visually confirmed by
looking for the black line made by the gasket around the complete circumference of the
housing.
Note!
After replacing the lid, make a final visual inspection of the main gasket for
contamination. The seal is made by the internal gasket.
F IGURE 5: I NSPECTION OF O- RING
Note!
If the gasket is in good contact, a thin black line, about 0.5-1mm in
width should be visible where the gasket is in contact with the lid.
Follow this line all the way round the edge of the seal as a final check
that the seal is good. The housing is now ready for the dive.
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