User guide
20
Maintenance
Sample Filter Replacement
Inspection Frequency: Inspect the sample lter before and after each use of the
instrument.
What to Look For: When inspecting the sample lter, look around the entire outside
diameter of the white lter element located inside of the plastic housing. Look for red
spots or the beginnings of discoloration on the white outside diameter of the element.
Do not look into the round ends of the white element for red spots or discoloration—
the round ends of the lter may always appear red. If red spots or discoloration are
discovered, the sample lter requires replacement to prevent the inux of particulate and
oil mists into the instrument.
Sample Filter Replacement Procedure:
1. Obtain replacement lter No. 16912.
2. Remove the existing lter from the retaining clip of the instrument by pulling
straight up and out.
3. Carefully remove the exible, black, rubber tubing connections from both ends of
the existing lter. Do NOT allow the tubes to slip back into the internal portion of
the case.
4. Discard the existing lter according to local, state, and federal requirements.
5. Install the tube ends onto the barbs of the replacement lter, aligning the ow arrow
of the lter with the ow arrow on the instrument.
6. CAREFULLY slide the tubing back into the internal portion of the instrument, and
seat the new lter into the retaining clip.
7. Inspect the sample hoses for signs of oil entrapment. Replacement of the sample
lter usually requires cleaning or replacement of the sample hoses.