LI-COR LI-6400, Руководство пользователя

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Maintenance & Service
LED Source Maintenance
19-22 Using the LI-6400
19
5 Prepare a piece of Propfilm
Cut an oversized piece of Propafilm. Stretch the film on a flat, clean surface
until taut. You may want to tape the corners with cellophane tape to secure it
to the cutting surface.
6 Remove the backing
Peel the backing from the tape and smooth any bubbles that may have formed.
7 Attach the Propafilm
Lay the leaf chamber onto the Propafilm. Turn the chamber over and smooth
the film. Bubbles can be lanced and smoothed.
8 Trim to size
Trim the film around the outer edge of the chamber. Make your first cut is as
close to the edge as possible.
9 Reassemble the leaf chamber assembly.
Fluorescence Chamber Tops
The 6400-06, -10, and -14 chambers have holders for fluorescence probes
built into the chamber tops. The top piece is plastic, lined on the inside with
Teflon. If the inner surface is scratched, the Teflon can tear, leaving a shad-
ow-causing blemish.
The chamber tops can be removed by removing the screws that hold it in
place. There is a layer of silicone cement underneath the chamber top, but it
wonÕt stick to the top because of its Teflon lining.
Self adhesive Teflon is available from LI-COR as part number 212-02314.
LED Source Maintenance
The most important maintenance item for the LED source is the foam gaskets,
concerning which there is one thing to remember:
(You can still use black neoprene gaskets on the bottom chamber.) The reason
is that the white gaskets helps unify the light distribution across the surface of
the leaf. Black gaskets significantly reduce the quantum flux hitting the leaf
near the edges.
Use white polyethylene gaskets on the LED source.