Hach-Lange POLYMETRON 9240 Basic User Manual - Manual (Page 9)

• Pressure: 0.2 to 6 bar (8-100 psig)
• Sample acidity: sample acidity should not be more than 300 ppm CaCO
3
• Temperature: 5 to 45°C
At this stage of the installation, make sure that the flow valve is closed. Connect the pipes by
inserting them into the quick release connections found on the bottom of the analyzer under the
sampling block (No. 14 in
Figure 1 on page 6). Be sure that the sample line is correctly flushed
before any connection to avoid particle injection into the hydraulic system. If particulate matter is
present in the sample, pre-filtration is necessary. A filter should be inserted in the sample line. One is
available as an option. Connect one inlet and one outlet per channel.
Connecting the drain tube
The drain outlet is located on the bottom of the analyzer. A 12 x 17 mm pipe is delivered with the
analyzer and should be connected to the drain outlet at one end and the other fed to a drain for
sample evacuation.
Reagents installation
The canisters are installed in the canister holder (No. 10 in Figure 1 on page 6).
1. Prepare the reagents.
2. Install and connect the conditioning solution (diisopropylamine).
3. Install and connect the reactivation solution (blue R label).
4. If you have this option, install and connect the auto calibration solution
(yellow CAL label).
Magnetic stirrer installation
1. On the front of the panel, remove the plastic bag from the overflow vessel (No. 5 in Figure 1
on page 6).
2. Remove the magnetic stirrer from the bag and install it in the overflow vessel.
Reagents volume declaration
Note: As you will now be using the analyzer menus to input data, it may be useful to familiarize yourself with the
data entry procedures by reading the section entitled
User interface on page 12.
1. Open the sample valve and check that there is no leakage in the hydraulic path.
2. Power on the analyzer.
3. Select the Menu option from the display.
4. Select MAINTENANCE/DIAG. from the main menu and press Enter.
5. Select the REAGENT CHANGES option and press Enter.
6. Set the BOTTLES FULL parameter to Yes and press Enter.
7. Press Esc to return to the MAINTENANCE/DIAG. menu.
Flow rate adjustment
1. From the MAINTENANCE/DIAG. menu select START UP and press Enter.
2. First, the system automatically primes both the calibration and reactivation tubes.
3. Check that there are no air bubbles in the reagent tubes for reactivation and auto calibration.
4. The next step allows you to regulate the sample flow rate on each measurement channel. The
name of the channel to regulate is displayed.
5. The analyzer automatically empties and refills the overflow vessel to determine the flow rate
which is displayed on screen.
English 9