8075A_B.docx
9
February 2017
Maintenance and Adjustments
Newport Scientific offers a maintenance and calibration service
for the 8075A. This service should be performed annually.
Alternatively, most wearable parts can be replaced by the user.
Sample Hose Replacement
A contaminated sample hose will slow down the response time
of the monitor. Also, worn or damaged hose is a safety hazard
and should be replaced when needed.
Use a pair of wrenches to unthread the hose fitting from the air
filter located at the monitor’s sample air inlet port. Remove all
remnants of thread sealing tape, any pieces left can get loose
during re-assembly could clog the internal bleed orifice. Apply
new tape to the filter threads and install hose.
Filter Replacement
If the pressure gauge on the 8075A
indicates lower than the actual line
pressure of the process air, a partially
clogged air filter might be the cause.
Remove the sample hose to access the
filter. With the filter removed, clean or
replace as needed. Remove all
remnants of thread sealing tape, any
pieces left can get loose during re-
assembly could clog the internal bleed
orifice. Observe the arrow direction
marked on the filter body.
