Test Accessories; Sensor Reactivation; Extended Stop - Hach 9240 Manual Básico Del Usuario

3. Press Select to move from one field to another to keep the value displayed, or press Enter on
completion of a field to move to the next.
4. Press the Esc function key on completion.
Priming tubes
1. After refilling the bottles (reference electrolyte, calibration solution and reactivation solution)
and/or after exchanging the empty bottle of conditioning reagent with a new one, select the
PRIMING TUBES option. This will set off the process to purge and refill the tubes.
2. Press the Esc function key at any time to abort the process and return to the menu.
Bottles full
1. If the bottles of reagent are full, select Yes and the default values for the volumes will be set.
These values can be viewed and modified by selecting the ADJUST BOTTLE VOLS. option in
the menu. If you select No to this option, you will manually have to enter the correct values using
the ADJUST BOTTLE VOLS. option.

Test accessories

This option allows you to check that a number of accessories, as well as the alarm relays and logical
inputs are functioning correctly.

Sensor reactivation

Usually, the electrode is reactivated automatically based on the time delay set in
frequency on page 16. This option allows for a manual reactivation.

Extended stop

If the instrument is not to be used for an extended period of time, select this option to shut the
analyzer down in a controlled manner.
1. Place all the tubes in demineralized water for cleaning.
2. Press OK to continue.
3. A progress bar will be displayed whilst the shut down is being performed.
4. On completion, you will be informed to remove and store the electrodes.
5. Press ESC to exit.
Startup
This process guides you through various steps required to set the instrument up for initial
measurements, or to restart after a long period of inactivity. This includes regulating the sample flow
and purging the pumps of reagent.
1. Regulate the flow of the sample to ensure a slight overflow into the overflow vessel.
2. Select OK to continue. You will then be required to regulate the flow on the next configured
channel.
3. On completion, an Action completed message will be displayed. Select Esc to exit.
Reactivation
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