Nikon Fantasea FD-50N Bedienungsanleitung PDF herunterladen (Seite 13)

Note 1:

The FD-50N lens port uses 2 radial O-rings for a watertight seal. This is

a different type of seal than used to seal the two main halves of the

housing itself. That seal is a compression gasket. Radial O-rings are

affected by friction when closing the seal, as it rubs against a housing

wall. Compression gaskets are not affected by friction as there is no

movement or rubbing against any wall. It is a direct face-to-face seal.

Therefore a radial O-ring, such as the O-ring on the port, requires

lubrication. The main housing gasket, a compression seal, does not

require any lubrication. It only requires cleaning.

Note 2

Lubrication of an O-ring does not improve the seal. It only reduces the

amount of friction on the O-ring when it is being moved into sealing

position. The amount of lubrication required on the port O-ring is only

enough to allow it to slip into place without friction, so it does not twist or

become dislodged. More grease is not better, and could in some cases

have a negative affect if it is applied in large amounts to form a build-up

that could trap any debris or foreign matter.

Open Housing:

• Release all three latches at same time, and lift off back half to open housing.

Inspect and clean gasket:

• Use a clean wet cloth. Use only water to clean the gasket’s sealing surface.

• Do not remove the gasket unless there is evidence that there is a need to

clean the underside surface, or the channel it sits in.

• If the gasket does need to be removed for cleaning or replacement, pull up

on the gasket tab to lift it out of its channel.

• When replacing or changing gasket, begin by aligning the gasket tab with its

cutout slot in the housing channel. Work the gasket down and into the

channel around the full circumference of the opening. Be sure it is

completely seated in the channel for a proper seal.

• Do not use any lubrication on this gasket

. This is a compression seal gasket,

which is not affected by friction and does not require lubrication for proper

closure of the housing.

Attach the Zoom Control Guide Ring to the lens:

• .This is attached using the Velcro strip. Insure that the projected nub is

directly on the bottom when you wrap it around the lens.

• The camera and tray are inserted in such a way that the nub of the Zoom

Control Guide Ring is sandwiched between the two projections found on the

lens port of the housing. All are pointed a downward direction. The Zoom

Control is operated when camera is installed in housing and button # 2

moved in an upward or downward direction.

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Nikon Fantasea FD-50N Bedienungsanleitung Seite 13