6-4 | Model 888 ATEX IECEx Tail Gas Analyzer
Cleaning the Optical Surface
To clean the optics use methanol as a solvent with lint free wipes and
swabs. Take care not to leave fingerprints on the surfaces.
Do not dry wipe or clean device in potentially explosive atmosphere.
Use suitable clothing and shoes with respect to the danger of hazard-
ous electrostatic charges.
Do not use rubber gloves or similar.
• Check that all optical surfaces are clean. Examine the optical surfaces
for any cloudy deposits that will obscure the light from the lamp.
• Check the windows between the electronics and oven enclosures.
Carefully remove the detector assembly (883048901) and clean the
lens.
Hot surfaces are present in the oven enclosure.
• Check the two mirrors in the reflector box located inside the oven.
• Carefully remove the lamp assembly and check the lamp surface.
There is a focusing lens in the lamp assembly mounting collar as well.
Recommended Optical Surface Cleaning Instruction
All ooptical sutfaces wihin the 888 should be cleaned using a Kimwipe or
similar optical grade cleaning sheet that has been wetted with acetone or
isopropyl alcohol. the purity of the solvent should be technical grade or
better.
DO NOT USE LENS CLEANING WIPES, ie. individually wrapped
wet napkins. THEY CAN CONTAIN CONTAMINANTS THAT
CAN ADVERSELY EFFECT THE PHOTOMETRIC MEASURE-
MENT.
When cleaning any optical surface hold the optics by the side or edges
and take great care not to touch the optical surface with bare skin, work
gloves, or other foreign materials. Using a pair of clean lab gloves is rec-
ommended whenever cleaning the optics. Only the optical grade clean-
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CAUTION
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CAUTION
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CAUTION
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WARNING
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WARNING
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