Section 8
Normal Operation
1. Turn the system power ON by depressing the main power switch to
the “I” position.
2. The system greeting display indicates the type of unit you own. This
greeting is “Base.”
3. The system electronics will initialize and check its calibration. All units
have been factory calibrated. If calibration is Ok, the display will show
“Calibration (passed).” The display will next read “Self Test (in
progress) Self Test. Passed.” Finally, the display will read “10 (±0.2)
M
Ω
-cm.” This is a reading of the calibration reference value.
4. From an (Idle) display, press the START/STOP switch on the control
panel to enter the normal recirculating mode. The unit’s pump will
begin to run.
5. The display will then begin reading resistivity of the product water.
Initially it will read “.... M
Ω
-cm” until the air is bled from the system.
Note
On initial start-up, the purity meter may display “...M
Ω
-cm or
uS/cm.” This is caused by air in the cell and should be replaced by a
resistivity reading almost immediately. If the dots aren’t replaced by a value
after one minute, refer to the Troubleshooting section of this manual.
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6. Allow the water’s resistivity to rise to the desired purity before drawing
off water.
7. The system should be left On or in Standby during the work day. (See
“Use of Standby Mode.”)
Note
Do not turn off the Nanopure Analytical during non-work hours.
Doing so will allow bacterial growth and other contamination of the water
in the system. As a result, the system will require a rinse-up period at the
beginning of the work day to achieve high quality product water. We
recommend using the Standby Mode.
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Note
From the normal recirculating mode when the display is showing
purity, press ENTER to show the current temperature. The temperature
will display for about 5 seconds before returning to the normal
recirculating mode.
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Nanopure™ Analytical 8-1
Thermo Scientific
