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Confirm that the temperature of the ozone destructor has dropped to ambient temperature level.
Open the ozone destructor. The ozone destructor should never be opened when it is hot as the
threads may seize. Confirm that the PTFE filters (discs) in the ozone destructor are clean. If there is
any material build up (e.g. white powder), wash the filters using DIW (or tap water) and dry. Do not
use compressed air or any gas to clean the filters.
Replace the catalyst and glass wool in the ozone destructor (see item X in service kit). Note that in
applications containing HCl or HF, the ozone destructor catalyst may require more frequent
replacement.
Replace the o-ring in the Ozone Destructor (see item P in service kit).
Reconnect power to ozone destructor heater.
Remove the tapes, which are used to seal the ends of the supplied CO
2
filter (see item M11 in
service kit). Replace the CO
2
filter on the Base reagent container. Seal the Base container tightly.
Isolate the air supply to the analyzer. Go to Simulate menu and set MFC to 60 l/h and run the
oxygen supply until the flow drops to 0 l/h (until the oxygen tank is empty). Install the new Hepa
Filter (see item “10-KBS-003” in the service kit) carefully without contaminating the open tubing.
Turn the air supply on.
Check the air supply pressure. The set point pressure should be 1.5 bar. When the oxygen
concentrator is running, the pressure typically cycles from 1.5 bar to 0.9 bar. Check the O2
PRESSURE SENSOR reading looking at the O2-Controller Status menu. The pressure is typically
400 mbar (±10 mbar) at 20 l/h MFC flow. See Section 8.1.6 Oxygen Controller Status for
details.
Using the Simulate menu (see Section 8.1.2 Simulate for details), check the operation of the
Mass Flow Controller (MFC) and confirm that the MFC is working at various flow set points.
Check the BioTector for any gas/liquid leaks by running the PRESSURE TEST cycle using the
Pressure Test menu (see Section 8.1.1.1 Pressure Test for details). Note that the BioTector
should be pressure tested at 400 mbar pressure only.
Confirm all signals (4-20mA and volt free contacts) are signaling correctly to the external control
device (see Section for 8.1.3 Signal Simulate details).
If necessary, go to Operation, Time & Date menu and adjust the time and the date. When the
system service is completed, go to Diagnostics, Service menu and select RESET SERVICE
COUNTER function (see Section 8.1.7 Service for details).
Carry out an “Install New Reagents” cycle using the Install New Reagents menu (see Section
2.2.2.1 Install New Reagents for details). Confirm that the zero readings obtained during the Zero
Calibration cycle are stable.
When Mixer Reactor is serviced, there is a possibility of contamination, which may create an
unacceptable TOC offset. If the TOC readings obtained during the zero calibration cycle are higher
than expected, a service zero calibration cycle can be initiated using the SET SERVICE ZERO
function in Service menu, while the BioTector is running. When initiated, BioTector automatically
runs a total of 5 zero calibration cycles during the following 100 online measurements and
automatically adjusts the zero offset values to compensate for the removal of the contamination. It
will therefore not be necessary to revisit the BioTector after the service or to repeat the zero
calibration cycle. See Section 8.1.7 Service for further details.
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