HF scientific AccUView Wastewater UV %Transmission Monitor - Manual (Page 32)

9.0
Routine Maintenance
The hydraulic loop through the AccUView Wastewater is fairly simple. This simplicity
keeps cleaning intervals to a minimum.
The chart below shows suggested maintenance periods. As each installation is different,
some maintenance periods will vary. It is recommended to always monitor the flow on a
daily basis and replace tubing on annual basis.
Maintenance Required Daily Weekly Monthly Every 3 Months/As
Needed
Yearly
Check Flow at Main Drain X
Check T-Strainer X
Check Cuvette Cleanliness X
Check Display for Desiccant
Replacement Indication X
Clean T-Strainer X
Clean Inlet Basket Strainer X
Calibrate & Replace Flow Through X
Replace Desiccant X
Clean Entire System X
Replace System Tubing X
9.1 Cleaning the Flow Through & Cuvette
Measurement cuvettes used for 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. A 5% solution of
phosphoric acid will help remove hard water or calcium deposits. Generally the flow
through unit will need to be rinsed. As a safety precaution a mild chlorine solution should
be used on both the cuvette and flow head to provide some disinfection. Always rinse the
parts completely with distilled or de-ionized water.
9.2 Replacing or Installing the Desiccant Pouch
The AccUView Wastewater 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.
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 be maintained to ensure
adequate desiccant life. Inspect the enclosure seal each time
the desiccant pouch is replaced. Replace any parts found to be
defective.
Figure 8: Desiccant Pouch
AccUView Wastewater (1/09) 26
Rev. 2.9