HF scientific Micro100 Laboratory Turbidimeter - Manual (Page 17)

Micro 100 (5/10) Page 11
Rev. 3.3
If errors 1-4 are noted, turn the instrument off and then back on. Once the instrument is back on, re-
calibrate the instrument. If the error persists, please contact the HF scientific Technical Service
Department to rectify the error. (See Section 9.0)
If error 5 is noted, replace the lamp module with a spare lamp module. If you do not have a spare lamp
module, refer to Section 10.0 for ordering information.
7.3
Factory Default Parameters
The MICRO 100 memory retains all original factory settings. At any time, you can force the instrument
to change back to these default settings. All calibration values and settable parameters (see section 5 &
6) will change back to default configurations. You will need to recalibrate the instrument after
performing this reset.
To invoke this option, first turn on the instrument. Next, press the
key while holding down the
▲ key. The instrument will continue operating in normal automatic mode with all adjustable
parameters reset to factory default conditions.
8.0 Routine Maintenance
The MICRO 100 has been designed for ease of use and simple operation. When not in use, ensure
that the instrument has been turned off and that a clean sample cuvette fitted with a black light
shield cap has been placed in the sample well. This will ensure that a minimal amount of dust
and/or debris will be able to settle on the optics of the instrument.
8.1
Cuvette Cleaning and Care
Proper measurement of the turbidity of a sample requires the use of a cuvette that is free of marks,
smudges, scratches and any bacterial growth. Cleaning the cuvette is accomplished by washing the
interior and exterior of the cuvette in a detergent solution. Once cleaned, the cuvette should be rinsed
thoroughly 8 to 10 times with clean distilled water to eliminate the possibility of detergent build-up and
streaking. Cleaned and dried cuvettes should be stored with the black light shield cap on the cuvette and
can be stored in a cuvette rack (see accessories and replacement parts list). During normal operation you
may use any typical glass cleaner along with a lint free cloth, or tissue, to clean the outside of the
cuvettes. HF scientific sells a Cuvette Maintenance Kit Catalog No. 19959 for this purpose.
8.2
Lamp Replacement
Periodically the lamp module will require replacement. Figure 1 illustrates the location of the lamp
module. An error message will be illuminated when it is time to replace the lamp (see section 7.2). It is
recommended that one spare lamp for each MICRO 100 turbidimeter be kept on hand at all times to
ensure continuous use of the instrument.
Before replacing the lamp module ensure that the instrument is turned off. Once you have turned off the
instrument, proceed with the following instructions: