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Frequent lens replacement
• If a lens needs replacement frequently, add a few washers to recess the lens out
of the pipe to decrease the wear rate.
• Ensure the detector is installed with the bolt pattern aligning with the direction
of the pipe. If it is not, the lens will be pressed farther into the pipe than
necessary, which will contribute to excessive wear.
Argus Installation and Resource Guide
Figure: 535 detector with three washers added as a spacer.
MAINTENANCE
24
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