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DC-ITD-CL4andCL8MAN01.A
www.dodtec.com
NOV 2018
815-788-5200
CL4 & CL8 Manual
Appendix H
–
Optic Block Cleaning Procedure
The CL4/CL8 may require periodic cleaning of the optics block when the instrument is used in
environ
ments with a high level of airborne particulate or a “High Background” Fault has been
reported.
There are two methods for cleaning the optics. One is a basic cleaning using canned air and the
other is a more in-depth cleaning that requires the fiber optics to be cleaned with alcohol.
In most cases the basic cleaning will be enough to clear an optics fault and return the DAC to normal
operating levels.
H.1 Basic Optics Cleaning
1)
Exit analysis mode and go to the load tape screen.
2)
Open the gate and remove the tape.
3)
Remove the optic block covers and the four screws holding in the optic blocks. (Figure 1)
Figure 1
Figure 2
4)
Pull block towards you until the pins holding the block in are loose (Figure 2)
5)
Without removing any tubes, turn block so the bottom is facing out. (Figure 3)
Figure 3
6)
Using canned air, blow out the channels on the block with high DAC values (Figure 3)
7)
Re-Install the blocks and close the gate.
8)
Press just below the top left corner in the load tape screen until the enter password screen appears.
(Figure 4)
