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Maintenance
Multiple hazards. Only qualified personnel must conduct the tasks described in this section of the
document.
Clean spills
Chemical exposure hazard. Dispose of chemicals and wastes in accordance with local, regional and
national regulations.
1. Obey all facility safety protocols for spill control.
2. Discard the waste according to applicable regulations.
Clean the instrument
Clean the exterior of the instrument with a moist cloth, and then wipe the instrument dry.
Clean the filter assembly
Note: Be careful not to push the lens out of the filter assembly.
1. Clean both sides of the lens of the filter assembly with glass cleaner, lens cleaner or isopropyl
alcohol, and a cotton-tipped swab or lens tissue.
2. Inspect the filter glass for scratches or other damage.
3. If a cloudy circle is seen around the edge of the filter, the filter material is delaminating. Replace
the filter assembly.
Replace the lamp
Wear protective eye wear when the lamp is turned on and the lamp cover is removed.
Burn hazard. The lamp must be cool before removal from the instrument.
Notes:
• Replace the lamp with the same size, style and electrical rating.
• Do not touch the lamp as oil from skin will damage the lamp. Clean the lamp with alcohol as
necessary.
• Either lamp lead can be put in either terminal block position.
• Turn the instrument on 30 minutes (Ratio on) or 60 minutes (Ratio off) before measurement or
calibration.
• Calibrate the instrument after the lamp is replaced.
To replace the lamp, refer to the documentation that is supplied with the lamp.
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