Lighthouse REMOTE 2012, 3012, 5012, 3102, 5102 Operating Manual
6-2 248083201-1 Rev 6
7. Program the unit for 5-minute sample time and 10-second hold.
8. Run six 5-minute samples.
9. If an average of more than one count per five-minute period is
reported, run another 30-minute sample to purge it and repeat
Step 8.
10. If the instrument has met the requirement of the Purge Count test,
return the instrument to its normal location and operating status.
Fault Isolation If the instrument does not pass the Purge Count test, please perform the
following procedure:
1. Check the data over the last 6 five-minute sample times.
2. If sporadic counts over all channels are occurring, the unit may
still have particles inside it. Allow the unit to sample overnight
with the purge filter attached before retesting it. If the counts are
still high after the overnight purge, call Lighthouse Technical
Support for assistance.
3. If the data shows consistent counts in the smallest channel only,
the instrument may have electrical problems. Call your
Lighthouse Service Representative for assistance.
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