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24 IsoPlane
®
SCT 320 Manual Version 1.B
2.14 Turret Removal
CAUTION
1. The optical surfaces in the spectrograph are extremely delicate and can be permanently damaged by
contact with solid objects as well as with most liquids and aerosols.
2. DO NOT TOUCH optical surfaces with anything. Wear thin protective powderless gloves to
minimize damage from body oils if you accidentally touch any optical surface, especially the grating.
3. Avoid talking or sneezing near optical surfaces. Do not breathe directly on them.
The following procedure is recommended for removing the grating turret from the IsoPlane’s
Turret Compartment. Observe proper optical handling procedures.
1. Scan the instrument to Grating #1 and a Center Wavelength of 0 nm.
2. Using the 9/64” hex wrench, remove the four Turret Compartment cover screws and remove
the cover.
3. Loosen the Center Torque Screw (see Figure 2-15).
4. Use extreme care so as not to touch the grating surfaces. Grasp the Center Torque Screw
and lift the grating turret straight up off the grating spindle assembly (see Figure 2-16). If the
turret cannot be lifted up, you may need to loosen the Center Torque Screw more.
5. Put the removed grating turret assembly into the protective container it was shipped in.
Figure 2-15. Center Torque Screw
Center Torque Screw