Hach BioTector B7000 User Manual page 90

Each time a component is activated, the BioTector will interlock additional devices to
ensure that the component being tested can be checked in a manner that will not
cause consequential damage to the overall system. It is recommended that each
test is evaluated carefully, for although the interlocks are extensive, it may still be
possible to damage the system.
In simulate menus, most items require a minimum of 6 l/h oxygen flow set on the
Mass Flow Controller (MFC) to operate. This is a system safety interlock, which is
implemented to prevent the system from flooding.
1. MFC. Use this function to set the MFC set point. Press the ENTER key, set the required set point, and
press the ENTER key again. The actual flow is shown at the top of the screen. An "*" is shown when the
MFC has been activated. If the flow is 0.0 l/h, then the MFC is switched off.
2. Ozone Generator. Use this function to test the ozone generator. To change the state of the device, press
the ENTER key, set the device to ON/OFF, and press the ENTER key again. If the device is on, it will be
marked with an "*".
WARNING
Before the Ozone Generator is switched on, a pressure test procedure is executed automatically to detect
any gas leakage in the system for safety. If this test fails then the ozone generator will not be switched on.
3. Acid Pump. Use this function to test the Acid Pump. To turn the pump on, press the ENTER key, and
select ON. Press ENTER again, input the number of pulses (½ revolutions), press ENTER and the pump
will run. If the reactor type of the system is multi-component reactor (MCR) and if the Acid Valve is
activated, the maximum allowable number of pulses is 10. When the pump is running the actual (outside
brackets) and programmed pulse time (inside brackets) is shown. The pump will stop when the required
number of pulses is complete, or to manually stop the pump, press ENTER, select OFF, and press
ENTER again.
4. Acid Valve. Use this function to test the Acid Valve. To change the state of the device, press the ENTER
key, set the device to ON/OFF, and press the ENTER key again. If the device is on, it will be marked with
an "*".
5. Base Pump. Use this function to test the Base Pump. To turn the pump on, press the ENTER key, and
select ON. Press ENTER again, input the number of pulses (½ revolutions), press ENTER and the pump
will run. When the pump is running the actual (outside brackets) and programmed pulse time (inside
brackets) is shown. The pump will stop when the required number of pulses is complete, or to manually
stop the pump, press ENTER, select OFF, and press ENTER again.
6. Base Valve (if configured in the system). Use this function to test the Base Valve. To change the state
of the device, press the ENTER key, set the device to ON/OFF, and press the ENTER key again. If the
device is on, it will be marked with an "*".
Ozone will be generated when the ozone generator is turned on.
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