HF scientific Chlorine Pocket Photometer Field Portable - Manual (Page 13)

6.0 Routine Maintenance
If you do not plan on leaving the instrument in the supplied carrying case, when not in
use, ensure that the instrument has been turned off and that a clean sample cuvette fitted
with a black cap has been placed in the sample well. This will reduce the amount of dust
and/or debris will be able to settle on the optics of the instrument.
6.1 Cuvette Cleaning and Care
Proper measurement of colorimetric, samples requires the use of cuvettes that are free of
marks, smudges, scratches and any bacterial growth.
The instrument is supplied with 4 disposable plastic cuvettes. Please note that these
cuvettes have ridges on opposing sides for finger grip and optically clear sides that are
used for measurement. The optical sides must be kept clean. If the cuvettes become
stained or scratched, replace the cuvette.
6.2 Battery Replacement
The instrument will periodically require new batteries to function properly. This will be
indicated with a flashing battery indicator on the display. To replace the batteries:
1. Turn the instrument off and place it upside down on a soft surface.
2. Remove the two screws (A) securing the battery cover (B). Lift cover off.
3. Remove the old batteries. Place four new AAA batteries (C) into the battery
compartment (ensuring the correct polarity).
4. Replace the battery cover and fasten the two screws carefully to ensure a watertight
seal.
5. Dispose of used batteries in accordance with all federal, state and local regulations.
Figure 3: Detailed view of the battery compartment
21885 (1/09)
Rev. 1.7
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