Aquametrix AM-TBR Turbidimeter User Manual - Manual (Page 38)

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10. Routine Maintenance
10.1. Cleaning the Flow Through Cuvette
Measurement cuvettes used for both grab sample and the flow through should be clean and free
of marks or scratches. Cleaning is accomplished by cleaning the interior and exterior with a
detergent solution and then rinsing several times with distilled or de-ionized water. The cuvette
can be replaced by first shutting off the flow using the provided shutoff clamp; unscrewing the old
cuvette and replacing with a fresh clean one.
10.2. Replacing or Installing the Desiccant Pouch
The AM-TBR continuously checks the condition of the desiccant. When the desiccant gets in
such a condition that it may cause problems, the instrument will display DESC on the lower
portion of the display to indicate the presence of humidity. See section 7.15.
Figure 7 Replacing the Dessicant Pouch
Proper use of the supplied desiccant is essential in maintaining the performance of the
instrument. The desiccant has been designed to have a long life; however, replacement of the
desiccant pouch will be required from time to time.
It is essential that the enclosure seal on the instrument base be maintained to ensure adequate
desiccant life. Inspect the seal each time the desiccant pouch is replaced. Replace or reseat the
seal if it is found to be defective.
The desiccant should be replaced when the instrument displays DESC. A new sealed desiccant
pouch and indicator card are available from Water Analytics part #21555R.To initially install or
remove the old desiccant, simply unscrew the four corner thumbscrews and remove the
electronics half of the instrument. Open the bag protecting the new desiccant pouch and replace
(or install for a new instrument) in the instrument base assembly. To speed up the recognition, by